From f0a479896eba35cecd8bf8950b3b87b21b7a2b28 Mon Sep 17 00:00:00 2001 From: Brecci Date: Thu, 7 May 2026 16:22:11 -0300 Subject: [PATCH 01/26] feat: bootstrap repository with CI/CD, linting, and release config Add README with comprehensive library description, update LICENSE to Elastic License 2.0, align .gitignore with lib-commons conventions, and add GitHub Actions workflows (lint, security, release), golangci-lint config, goreleaser config, semantic-release config, dependabot, and PR template. X-Lerian-Ref: 0x1 --- .github/FUNDING.yml | 1 + .github/dependabot.yml | 7 + .github/pull_request_template.md | 27 ++ .github/workflows/go-combined-analysis.yml | 57 ++++ .github/workflows/release.yml | 102 +++++++ .gitignore | 44 ++- .golangci.yml | 171 ++++++++++++ .goreleaser.yml | 41 +++ .ignorecoverunit | 6 + .releaserc.yml | 44 +++ LICENSE | 294 +++++++-------------- README.md | 49 +++- 12 files changed, 612 insertions(+), 231 deletions(-) create mode 100644 .github/FUNDING.yml create mode 100644 .github/dependabot.yml create mode 100644 .github/pull_request_template.md create mode 100644 .github/workflows/go-combined-analysis.yml create mode 100644 .github/workflows/release.yml create mode 100644 .golangci.yml create mode 100644 .goreleaser.yml create mode 100644 .ignorecoverunit create mode 100644 .releaserc.yml diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml new file mode 100644 index 0000000..94f372d --- /dev/null +++ b/.github/FUNDING.yml @@ -0,0 +1 @@ +github: [LerianStudio] diff --git a/.github/dependabot.yml b/.github/dependabot.yml new file mode 100644 index 0000000..8c358da --- /dev/null +++ b/.github/dependabot.yml @@ -0,0 +1,7 @@ +version: 2 +updates: + - package-ecosystem: "gomod" + directory: "/" + schedule: + interval: "weekly" + target-branch: "develop" diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md new file mode 100644 index 0000000..293946e --- /dev/null +++ b/.github/pull_request_template.md @@ -0,0 +1,27 @@ +# Pull Request Checklist + +## Pull Request Type +[//]: # (Check the appropriate box for the type of pull request.) + +- [ ] Feature +- [ ] Fix +- [ ] Refactor +- [ ] Pipeline +- [ ] Tests +- [ ] Documentation + +## Checklist +Please check each item after it's completed. + +- [ ] I have tested these changes locally. +- [ ] I have updated the documentation accordingly. +- [ ] I have added necessary comments to the code, especially in complex areas. +- [ ] I have ensured that my changes adhere to the project's coding standards. +- [ ] I have checked for any potential security issues. +- [ ] I have ensured that all tests pass. +- [ ] I have updated the version appropriately (if applicable). +- [ ] I have confirmed this code is ready for review. + +## Additional Notes +[//]: # (Add any additional notes, context, or explanation that could be helpful for reviewers.) +## Obs: Please, always remember to target your PR to develop branch instead of main. diff --git a/.github/workflows/go-combined-analysis.yml b/.github/workflows/go-combined-analysis.yml new file mode 100644 index 0000000..3e95c5a --- /dev/null +++ b/.github/workflows/go-combined-analysis.yml @@ -0,0 +1,57 @@ +name: "Go Combined Analysis" + +on: + pull_request: + branches: + - develop + - main + types: + - opened + - edited + - synchronize + - reopened + +permissions: + id-token: write + contents: read + pull-requests: read + actions: read + security-events: write + +jobs: + GoLangCI-Lint: + name: Run GoLangCI-Lint to SDK + runs-on: ubuntu-24.04 + steps: + - name: Checkout Repository + uses: actions/checkout@v4 + + # Using GolangCI-Lint Module + - name: Run GoLangCI Lint + uses: LerianStudio/github-actions-golangci-lint@main + with: + lerian_studio_midaz_push_bot_app_id: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_APP_ID }} + lerian_studio_midaz_push_bot_private_key: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_PRIVATE_KEY }} + lerian_ci_cd_user_gpg_key: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY }} + lerian_ci_cd_user_gpg_key_password: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY_PASSWORD }} + lerian_ci_cd_user_name: ${{ secrets.LERIAN_CI_CD_USER_NAME }} + lerian_ci_cd_user_email: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} + go_version: '1.25' + github_token: ${{ secrets.GITHUB_TOKEN }} + golangci_lint_version: 'v2.11.2' + + GoSec: + name: Run GoSec to SDK + runs-on: ubuntu-24.04 + steps: + - uses: actions/checkout@v4 + + - uses: actions/setup-go@v5 + with: + go-version: '1.25' + cache: false + + - name: Gosec Scanner + uses: securego/gosec@master + with: + args: ./... diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml new file mode 100644 index 0000000..933867b --- /dev/null +++ b/.github/workflows/release.yml @@ -0,0 +1,102 @@ +name: release + +on: + push: + branches: + - develop + - main + paths-ignore: + - '.gitignore' + - '**/*.env' + - '*.env' + - '**/*.md' + - '*.md' + - '**/*.txt' + - '*.txt' + tags-ignore: + - '**' + +permissions: + id-token: write + contents: write + pull-requests: write + +jobs: + publish_release: + runs-on: ubuntu-24.04 + environment: + name: create_release + name: Create Release to SDK + steps: + - uses: actions/create-github-app-token@v1 + id: app-token + with: + app-id: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_APP_ID }} + private-key: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_PRIVATE_KEY }} + + - name: Checkout repository + uses: actions/checkout@v4 + with: + fetch-depth: 0 + token: ${{ steps.app-token.outputs.token }} + + - name: Sync with remote branch + run: | + git fetch origin ${{ github.ref_name }} + git reset --hard origin/${{ github.ref_name }} + + - name: Import GPG key + uses: crazy-max/ghaction-import-gpg@v6 + id: import_gpg + with: + gpg_private_key: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY }} + passphrase: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY_PASSWORD }} + git_committer_name: ${{ secrets.LERIAN_CI_CD_USER_NAME }} + git_committer_email: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} + git_config_global: true + git_user_signingkey: true + git_commit_gpgsign: true + + - name: Install plugin @semantic-release/exec + run: npm install --save-dev @semantic-release/exec@^6.0.3 + + - name: Semantic Release + uses: cycjimmy/semantic-release-action@v4 + id: semantic + with: + ci: false + semantic_version: 23.0.8 + extra_plugins: | + conventional-changelog-conventionalcommits@v7.0.2 + env: + GITHUB_TOKEN: ${{ steps.app-token.outputs.token }} + GIT_AUTHOR_NAME: ${{ secrets.LERIAN_CI_CD_USER_NAME }} + GIT_AUTHOR_EMAIL: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} + GIT_COMMITTER_NAME: ${{ secrets.LERIAN_CI_CD_USER_NAME }} + GIT_COMMITTER_EMAIL: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} + + - name: Create Backmerge PR (main → develop) + if: github.ref == 'refs/heads/main' && steps.semantic.outputs.new_release_published == 'true' + run: | + # Check if this release came from a hotfix merge + LAST_COMMIT_MSG=$(git log -1 --pretty=format:"%s") + if [[ "$LAST_COMMIT_MSG" =~ Merge.*hotfix ]]; then + echo "Skipping backmerge: Release came from hotfix branch" + exit 0 + fi + + # Create PR from main to develop + gh pr create \ + --title "chore(release): Backmerge main → develop after release ${{ steps.semantic.outputs.new_release_version }}" \ + --body "Automated backmerge after release ${{ steps.semantic.outputs.new_release_version }}" \ + --base develop \ + --head main \ + --label "automated" \ + --label "backmerge" || echo "PR already exists or no changes to merge" + env: + GITHUB_TOKEN: ${{ steps.app-token.outputs.token }} + + - uses: actions/setup-go@v5 + with: + go-version: '1.25' + cache: false diff --git a/.gitignore b/.gitignore index aaadf73..bcfa8e5 100644 --- a/.gitignore +++ b/.gitignore @@ -1,32 +1,18 @@ -# If you prefer the allow list template instead of the deny list, see community template: -# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore -# -# Binaries for programs and plugins -*.exe -*.exe~ -*.dll -*.so -*.dylib +.idea/* +.DS_Store +.claude/ +.mcp.json -# Test binary, built with `go test -c` -*.test +# Test reports and coverage +reports/ +coverage.out +coverage.html +*_coverage.out +*_coverage.html -# Code coverage profiles and other test artifacts -*.out -coverage.* -*.coverprofile -profile.cov +# Security scan reports +gosec-report.sarif -# Dependency directories (remove the comment below to include it) -# vendor/ - -# Go workspace file -go.work -go.work.sum - -# env file -.env - -# Editor/IDE -# .idea/ -# .vscode/ +docs/codereview/ +.codegraph/ +vendor/ diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000..fe97dce --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,171 @@ +version: "2" +run: + tests: false +linters: + enable: + # --- Existing linters --- + - bodyclose + - depguard + - dogsled + - dupword + - errchkjson + - gocognit + - gocyclo + - loggercheck + - misspell + - nakedret + - nilerr + - nolintlint + - prealloc + - predeclared + - reassign + - revive + - staticcheck + - unconvert + - unparam + - usestdlibvars + - wastedassign + - wsl_v5 + + # --- Tier 1: Safety & Correctness --- + - errorlint # type assertions on errors, missing %w + - exhaustive # non-exhaustive enum switches + - fatcontext # context growing in loop + - forcetypeassert # unchecked type assertions (sync.Map etc.) + - gosec # security issues (math/rand for jitter etc.) + - nilnil # return nil, nil ambiguity + - noctx # net.Listen/exec.Command without context + + # --- Tier 2: Code Quality & Modernization --- + - goconst # repeated string literals + - gocritic # if-else→switch, deprecated comments + - inamedparam # unnamed interface params + - intrange # integer range loops + - mirror # allocation savings (bytes.Equal etc.) + - modernize # Go modernization suggestions + - perfsprint # fmt.Errorf→errors.New where applicable + + # --- Tier 3: Zero-Issue Guards --- + - asasalint # variadic any argument passing + - copyloopvar # loop variable capture prevention + - durationcheck # time.Duration math bugs + - exptostd # x/exp to stdlib migration + - gocheckcompilerdirectives # malformed //go: comments + - makezero # make with non-zero length passed to append + - musttag # struct tag validation for marshaling + - nilnesserr # subtle nil error patterns + - recvcheck # receiver consistency + - rowserrcheck # SQL rows.Err() checks + - spancheck # OTEL span lifecycle + - sqlclosecheck # SQL resource close + - testifylint # testify assertion patterns + + settings: + # --- New settings --- + exhaustive: + default-signifies-exhaustive: true + + goconst: + min-len: 3 + min-occurrences: 3 + ignore-tests: true + + # --- Existing settings (unchanged) --- + depguard: + rules: + main: + deny: + - pkg: io/ioutil + desc: The io/ioutil package has been deprecated, see https://go.dev/doc/go1.16#ioutil + gocyclo: + min-complexity: 16 + govet: + enable: + - shadow + settings: + shadow: + strict: true + revive: + rules: + - name: import-shadowing + severity: warning + disabled: false + - name: empty-block + severity: warning + disabled: false + - name: empty-lines + severity: warning + disabled: false + - name: use-any + severity: warning + disabled: false + wsl_v5: + allow-first-in-block: true + allow-whole-block: false + branch-max-lines: 2 + + exclusions: + generated: lax + rules: + - linters: + - errcheck + text: Error return value of .((os\.)?std(out|err)\..*|.*Close|.*Flush|os\.Remove(All)?|.*print(f|ln)?|os\.(Un)?Setenv). is not checked + - linters: + - revive + text: func name will be used as test\.Test.* by other packages, and that stutters; consider calling this + - linters: + - gosec + text: Use of unsafe calls should be audited + - linters: + - gosec + text: Subprocess launch(ed with variable|ing should be audited) + - linters: + - gosec + text: G307 + - linters: + - gosec + text: (Expect directory permissions to be 0750 or less|Expect file permissions to be 0600 or less) + - linters: + - gosec + text: Potential file inclusion via variable + - linters: + - gosec + text: G113 + - linters: + - gosec + text: G104 + - linters: + - gosec + text: 'G204: Subprocess launched with a potential tainted input or cmd arguments' + - linters: + - gosec + text: 'G306: Expect WriteFile permissions to be 0600 or less' + - linters: + - revive + text: 'package-comments: should have a package comment' + - linters: + - errcheck + - gosec + path: _test\.go + - linters: + - staticcheck + text: 'ST1000: at least one file in a package should have a package comment' + - linters: + - govet + text: '^shadow: declaration of "(err|ok)" shadows declaration' + - path: (.+)\.go$ + text: parameter .* always receives + paths: + - third_party$ + - builtin$ + - examples$ +issues: + max-issues-per-linter: 0 + max-same-issues: 0 +formatters: + exclusions: + generated: lax + paths: + - third_party$ + - builtin$ + - examples$ diff --git a/.goreleaser.yml b/.goreleaser.yml new file mode 100644 index 0000000..0af751e --- /dev/null +++ b/.goreleaser.yml @@ -0,0 +1,41 @@ +version: 2 + +# lib-observability is a Go library (no binary to build). +# GoReleaser is used only for changelog generation and GitHub release creation. + +builds: + - skip: true + +changelog: + sort: asc + filters: + exclude: + - "merge conflict" + - Merge pull request + - Merge remote-tracking branch + - Merge branch + - go mod tidy + groups: + - title: "Breaking Changes" + regexp: "^.*breaking[(\\w)]*:+.*$" + order: 0 + - title: "New Features" + regexp: "^.*feat[(\\w)]*:+.*$" + order: 10 + - title: "Improvements" + regexp: "^.*chore[(\\w)]*:+.*$" + order: 20 + - title: "Bug Fixes" + regexp: "^.*fix[(\\w)]*:+.*$" + order: 30 + - title: "Security Updates" + regexp: '^.*?sec(\([[:word:]]+\))??!?:.+$' + order: 40 + - title: "Documentation Updates" + regexp: ^.*?docs(\([[:word:]]+\))??!?:.+$ + order: 50 + - title: "Tests" + regexp: ^.*?(test(s)?(\([[:word:]]+\))?)!?:.+$ + order: 60 + - title: Other Work + order: 999 diff --git a/.ignorecoverunit b/.ignorecoverunit new file mode 100644 index 0000000..36f7409 --- /dev/null +++ b/.ignorecoverunit @@ -0,0 +1,6 @@ +# Coverage exclusion patterns for unit tests +# Lines starting with # are comments +# Use * as wildcard for path matching + +# Auto-generated mocks +*_mock.go diff --git a/.releaserc.yml b/.releaserc.yml new file mode 100644 index 0000000..f6b6a1a --- /dev/null +++ b/.releaserc.yml @@ -0,0 +1,44 @@ +plugins: + - ["@semantic-release/commit-analyzer", { + preset: "conventionalcommits", + parserOpts: { + noteKeywords: [ + "BREAKING CHANGE", + "BREAKING CHANGES" + ] + }, + releaseRules: [ + { type: "feat", release: "minor" }, + { type: "perf", release: "minor" }, + { type: "build", release: "minor" }, + { type: "chore", release: "patch" }, + { type: "ci", release: "patch" }, + { type: "test", release: "patch" }, + { type: "fix", release: "patch" }, + { type: "refactor", release: "minor" }, + { type: "docs", release: "patch" }, + { breaking: true, release: "major" } + ] + }] + + # Plugin to version the CHANGELOG.md + - ["@semantic-release/git", { + assets: ["CHANGELOG.md"], + message: "chore(release): ${nextRelease.version}\n\nupdated changelog." + }] + + # Plugin to publish the CHANGELOG.md as an asset in the GitHub release + - ["@semantic-release/github", { + assets: [ + { path: "CHANGELOG.md", label: "Changelog" } + ], + successComment: false, + failCommentCondition: false, + labels: [] + }] + - "@semantic-release/exec" + +branches: + - name: main + - name: develop + prerelease: beta diff --git a/LICENSE b/LICENSE index 261eeb9..d317b57 100644 --- a/LICENSE +++ b/LICENSE @@ -1,201 +1,93 @@ - Apache License - Version 2.0, January 2004 - http://www.apache.org/licenses/ - - TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - - 1. 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If your company makes +such a claim, your patent license ends immediately for work on behalf of your +company. + +## Notices + +You must ensure that anyone who gets a copy of any part of the software from you +also gets a copy of these terms. + +If you modify the software, you must include in any modified copies of the +software prominent notices stating that you have modified the software. + +## No Other Rights + +These terms do not imply any licenses other than those expressly granted in +these terms. + +## Termination + +If you use the software in violation of these terms, such use is not licensed, +and your licenses will automatically terminate. If the licensor provides you +with a notice of your violation, and you cease all violation of this license no +later than 30 days after you receive that notice, your licenses will be +reinstated retroactively. However, if you violate these terms after such +reinstatement, any additional violation of these terms will cause your licenses +to terminate automatically and permanently. + +## No Liability + +*As far as the law allows, the software comes as is, without any warranty or +condition, and the licensor will not be liable to you for any damages arising +out of these terms or the use or nature of the software, under any kind of +legal claim.* + +## Definitions + +The **licensor** is the entity offering these terms, and the **software** is the +software the licensor makes available under these terms, including any portion +of it. + +**you** refers to the individual or entity agreeing to these terms. + +**your company** is any legal entity, sole proprietorship, or other kind of +organization that you work for, plus all organizations that have control over, +are under the control of, or are under common control with that +organization. **control** means ownership of substantially all the assets of an +entity, or the power to direct its management and policies by vote, contract, or +otherwise. Control can be direct or indirect. + +**your licenses** are all the licenses granted to you for the software under +these terms. + +**use** means anything you do with the software requiring one of your licenses. + +**trademark** means trademarks, service marks, and similar rights. diff --git a/README.md b/README.md index 1e05864..5c88d30 100644 --- a/README.md +++ b/README.md @@ -1,2 +1,49 @@ # lib-observability -Lerian's shared Go library for OpenTelemetry-based observability — tracing, metrics, structured logging, panic recovery telemetry, and production assertions with instrumentation. + +`lib-observability` is Lerian's shared Go library for observability and telemetry. It provides a unified, OpenTelemetry-native instrumentation layer for tracing, metrics, structured logging, panic recovery with telemetry, and production-safe assertions — extracted from [`lib-commons`](https://github.com/LerianStudio/lib-commons) to give observability its own versioning, dependency footprint, and release cadence. + +## What's in this library + +### Telemetry bootstrap and tracing (`opentelemetry`) + +Full OpenTelemetry SDK lifecycle management: OTLP/gRPC exporter setup for traces, metrics, and logs; `TracerProvider`, `MeterProvider`, and `LoggerProvider` construction via a single `NewTelemetry(cfg)` call; global provider opt-in with `ApplyGlobals()`; and graceful shutdown with `ShutdownTelemetry()`. Includes trace context propagation for HTTP, gRPC, and message queues (Kafka/Redpanda/RabbitMQ), span error/event recording helpers, struct-to-attribute conversion with automatic sensitive field redaction, and custom `SpanProcessor` implementations for context-carried attribute injection. + +### Metrics (`opentelemetry/metrics`) + +Thread-safe `MetricsFactory` with lazy instrument caching and a fluent builder API for Counters, Gauges, and Histograms. Provides `.WithLabels()` / `.WithAttributes()` chaining followed by `.Add()`, `.Set()`, or `.Record()` — all with explicit error returns. Includes pre-configured domain metric recorders (accounts, transactions, routes, operations) and system infrastructure gauges (CPU, memory). Ships a `NewNopFactory()` for tests and disabled-metrics environments. + +### Structured logging (`log`) + +A minimal, implementation-agnostic `Logger` interface with five methods (`Log`, `With`, `WithGroup`, `Enabled`, `Sync`), four severity levels, and typed `Field` constructors (`String`, `Int`, `Bool`, `Err`, `Any`). Includes a stdlib-based `GoLogger` with CWE-117 log-injection prevention, a `NopLogger` for tests, production-aware error sanitization (`SafeError`, `SanitizeExternalResponse`), and a generated mock for unit testing. + +### Zap adapter with OTEL bridge (`zap`) + +A [`zap`](https://github.com/uber-go/zap) adapter implementing the `Logger` interface, with automatic `trace_id` and `span_id` injection into every log entry. Bridges zap output to the OpenTelemetry Logs SDK via `otelzap`, enabling unified log collection through the OTLP pipeline. Supports environment-aware configuration (production, staging, development, local) and runtime log level adjustment. + +### Panic recovery with telemetry (`runtime`) + +Policy-driven panic recovery (`KeepRunning` / `CrashProcess`) with full observability integration: span event recording (`panic.recovered`), panic counter metrics (`panic_recovered_total`), structured logging, and optional external error reporter forwarding. Provides safe goroutine launchers (`SafeGo`, `SafeGoWithContext`) and `HandlePanicValue` for integration with HTTP/gRPC framework recovery middleware. Supports production mode for stack trace redaction. + +### Production assertions with instrumentation (`assert`) + +A context-scoped `Asserter` that validates domain invariants at runtime without panicking — every assertion failure returns an error, records a span event (`assertion.failed`), and increments the `assertion_failed_total` metric counter. Includes a predicates library for financial domain validation (decimal precision, balance sufficiency, transaction state transitions, debit/credit equality) alongside general-purpose checks (`NotNil`, `NotEmpty`, `NoError`, `ValidUUID`). + +### Observability constants and context carriers + +Shared OTEL attribute prefixes, metric names, event names, header constants (`Traceparent`, `Tracestate`), label sanitization (`SanitizeMetricLabel`), and sensitive field detection for cross-cutting redaction. Context carrier helpers (`ContextWithTracer`, `ContextWithMetricFactory`, `ContextWithLogger`, `ContextWithSpanAttributes`) for propagating observability primitives through `context.Context`. + +### Redaction engine + +A configurable `Redactor` with rule-based field processing supporting mask, hash (SHA-256), and drop actions. Applies automatically to span attributes via the `RedactingAttrBagSpanProcessor` and to struct-to-attribute conversion. Includes `ObfuscateStruct` for generic struct field obfuscation and integration with the sensitive field detection layer. + +## Design principles + +- **Explicit initialization** — no implicit global state; `NewTelemetry` + `ApplyGlobals` is opt-in +- **Nil-safe and no-op by default** — every factory and logger has a null-object variant for safe degradation +- **Errors over panics** — metric/builder operations return errors; assertions return errors instead of panicking +- **Redaction-first** — sensitive fields are masked in spans, logs, and attributes by default +- **Interface-driven** — `Logger`, `MetricsFactory`, `ErrorReporter`, and `DLQMetrics` are all interface-bound for testability + +## Relationship to lib-commons + +This library was extracted from `lib-commons` to decouple observability infrastructure from service primitives and data connectors. Services that previously imported `lib-commons` for telemetry can migrate to `lib-observability` for a lighter dependency graph. `lib-commons` will depend on `lib-observability` for its own instrumentation needs (database spans, streaming metrics, middleware telemetry). From 3636c35d4de74a82cb4d40686851dd799ba6aa84 Mon Sep 17 00:00:00 2001 From: Brecci Date: Thu, 7 May 2026 16:38:32 -0300 Subject: [PATCH 02/26] feat: add Go module, package structure, and Makefile MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Initialize go.mod at github.com/LerianStudio/lib-observability with flat package layout (no pkg/ or redundant parent dir). Packages at module root: log, tracing, metrics, runtime, assert, zap, constants — each with doc.go. Includes Makefile with full test, lint, coverage, security, and release targets ported from lib-commons, plus scripts/ for shared make includes. X-Lerian-Ref: 0x1 --- Makefile | 609 +++++++++++++++++++++++++++++++++++++ assert/doc.go | 5 + constants/doc.go | 4 + go.mod | 3 + log/doc.go | 6 + metrics/doc.go | 5 + runtime/doc.go | 5 + scripts/makefile_colors.mk | 14 + scripts/makefile_utils.mk | 11 + tracing/doc.go | 5 + zap/doc.go | 4 + 11 files changed, 671 insertions(+) create mode 100644 Makefile create mode 100644 assert/doc.go create mode 100644 constants/doc.go create mode 100644 go.mod create mode 100644 log/doc.go create mode 100644 metrics/doc.go create mode 100644 runtime/doc.go create mode 100644 scripts/makefile_colors.mk create mode 100644 scripts/makefile_utils.mk create mode 100644 tracing/doc.go create mode 100644 zap/doc.go diff --git a/Makefile b/Makefile new file mode 100644 index 0000000..faf8ab8 --- /dev/null +++ b/Makefile @@ -0,0 +1,609 @@ +# Default target when running bare `make` +.DEFAULT_GOAL := help + +# Define the root directory of the project (resolves correctly even with make -f) +LIB_OBSERVABILITY := $(dir $(abspath $(lastword $(MAKEFILE_LIST)))) + +# Include shared color definitions and utility functions +include $(LIB_OBSERVABILITY)/scripts/makefile_colors.mk +include $(LIB_OBSERVABILITY)/scripts/makefile_utils.mk + +# Define common utility functions +define print_title + @echo "" + @echo "------------------------------------------" + @echo " 📝 $(1) " + @echo "------------------------------------------" +endef + +# ------------------------------------------------------ +# Test configuration for lib-observability +# ------------------------------------------------------ + +# Integration test filter +RUN ?= +PKG ?= + +# Computed run pattern: uses RUN if set, otherwise defaults to '^TestIntegration' +ifeq ($(RUN),) + RUN_PATTERN := ^TestIntegration +else + RUN_PATTERN := $(RUN) +endif + +# Low-resource mode for limited machines (sets -p=1 -parallel=1, disables -race) +LOW_RESOURCE ?= 0 + +# Computed flags for low-resource mode +ifeq ($(LOW_RESOURCE),1) + LOW_RES_P_FLAG := -p 1 + LOW_RES_PARALLEL_FLAG := -parallel 1 + LOW_RES_RACE_FLAG := +else + LOW_RES_P_FLAG := + LOW_RES_PARALLEL_FLAG := + LOW_RES_RACE_FLAG := -race +endif + +# macOS ld64 workaround +UNAME_S := $(shell uname -s) +ifeq ($(UNAME_S),Darwin) + ifneq ($(DISABLE_OSX_LINKER_WORKAROUND),1) + GO_TEST_LDFLAGS := -ldflags="-linkmode=external -extldflags=-ld_classic" + else + GO_TEST_LDFLAGS := + endif +else + GO_TEST_LDFLAGS := +endif + +# ------------------------------------------------------ +# Test tooling configuration +# ------------------------------------------------------ + +GOTESTSUM_VERSION ?= v1.12.0 +GOSEC_VERSION ?= v2.22.4 +GOLANGCI_LINT_VERSION ?= v2.1.6 + +TEST_REPORTS_DIR ?= ./reports +GOTESTSUM = $(shell command -v gotestsum 2>/dev/null) +RETRY_ON_FAIL ?= 0 + +.PHONY: tools tools-gotestsum +tools: tools-gotestsum ## Install helpful dev/test tools + +tools-gotestsum: + @if [ -z "$(GOTESTSUM)" ]; then \ + echo "Installing gotestsum..."; \ + GO111MODULE=on go install gotest.tools/gotestsum@$(GOTESTSUM_VERSION); \ + else \ + echo "gotestsum already installed: $(GOTESTSUM)"; \ + fi + +#------------------------------------------------------- +# Help Command +#------------------------------------------------------- + +.PHONY: help +help: + @echo "" + @echo "" + @echo "Lib-Observability Project Management Commands" + @echo "" + @echo "" + @echo "Core Commands:" + @echo " make help - Display this help message" + @echo " make test - Run unit tests (without integration)" + @echo " make ci - Run the local fix + verify pipeline" + @echo " make build - Build all packages" + @echo " make clean - Clean all build artifacts" + @echo "" + @echo "" + @echo "Test Suite Commands:" + @echo " make test-unit - Run unit tests (LOW_RESOURCE=1 supported)" + @echo " make test-integration - Run integration tests with testcontainers (RUN=, LOW_RESOURCE=1)" + @echo " make test-all - Run all tests (unit + integration)" + @echo "" + @echo "" + @echo "Coverage Commands:" + @echo " make coverage-unit - Run unit tests with coverage report (PKG=./path, uses .ignorecoverunit)" + @echo " make coverage-integration - Run integration tests with coverage report (PKG=./path)" + @echo " make coverage - Run all coverage targets (unit + integration)" + @echo "" + @echo "" + @echo "Test Tooling:" + @echo " make tools - Install test tools (gotestsum)" + @echo "" + @echo "" + @echo "Code Quality Commands:" + @echo " make lint - Run linting on all packages (read-only check)" + @echo " make lint-fix - Run linting with auto-fix on all packages" + @echo " make format - Format code in all packages" + @echo " make tidy - Clean dependencies" + @echo " make check-tests - Verify test coverage for packages" + @echo " make vet - Run go vet on all packages" + @echo " make sec - Run security checks using gosec" + @echo " make sec SARIF=1 - Run security checks with SARIF output" + @echo "" + @echo "" + @echo "Git Hook Commands:" + @echo " make setup-git-hooks - Install and configure git hooks" + @echo " make check-hooks - Verify git hooks installation status" + @echo " make check-envs - Check if github hooks are installed and secret env files are not exposed" + @echo "" + @echo "" + @echo "Release Commands:" + @echo " make goreleaser - Create release snapshot with goreleaser" + @echo "" + @echo "" + +#------------------------------------------------------- +# Core Commands +#------------------------------------------------------- + +.PHONY: build +build: + $(call print_title,Building all packages) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + go build ./... + @echo "$(GREEN)$(BOLD)[ok]$(NC) All packages built successfully$(GREEN) ✔️$(NC)" + +.PHONY: clean +clean: + $(call print_title,Cleaning build artifacts) + @rm -rf ./bin ./dist $(TEST_REPORTS_DIR) coverage.out coverage.html gosec-report.sarif + @go clean -cache -testcache + @echo "$(GREEN)$(BOLD)[ok]$(NC) All build artifacts cleaned$(GREEN) ✔️$(NC)" + +.PHONY: ci +ci: + $(call print_title,Running local CI preflight pipeline) + @printf "This target normalizes the worktree before verification.\n" + $(MAKE) lint-fix + $(MAKE) format + $(MAKE) tidy + $(MAKE) check-tests + $(MAKE) sec + $(MAKE) vet + $(MAKE) test-unit + $(MAKE) test-integration + @echo "$(GREEN)$(BOLD)[ok]$(NC) Local CI pipeline completed successfully$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Core Test Commands +#------------------------------------------------------- + +.PHONY: test +test: + $(call print_title,Running all tests) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + @set -e; mkdir -p $(TEST_REPORTS_DIR); \ + if [ -n "$(GOTESTSUM)" ]; then \ + echo "Running tests with gotestsum"; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) ./... || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying tests once..."; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) ./...; \ + else \ + exit 1; \ + fi; \ + }; \ + else \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) ./... || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying tests once..."; \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) ./...; \ + else \ + exit 1; \ + fi; \ + }; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) All tests passed$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Test Suite Aliases +#------------------------------------------------------- + +.PHONY: test-unit +test-unit: + $(call print_title,Running Go unit tests) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + @set -e; mkdir -p $(TEST_REPORTS_DIR); \ + pkgs=$$(go list ./... | grep -v '/tests'); \ + if [ -z "$$pkgs" ]; then \ + echo "No unit test packages found"; \ + else \ + if [ -n "$(GOTESTSUM)" ]; then \ + echo "Running unit tests with gotestsum"; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying unit tests once..."; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + else \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying unit tests once..."; \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + fi; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Unit tests passed$(GREEN) ✔️$(NC)" + +.PHONY: test-integration +test-integration: + $(call print_title,Running integration tests with testcontainers) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + $(call check_command,docker,"Install Docker from https://docs.docker.com/get-docker/") + @set -e; mkdir -p $(TEST_REPORTS_DIR); \ + if [ -n "$(PKG)" ]; then \ + echo "Using specified package: $(PKG)"; \ + pkgs=$$(go list $(PKG) 2>/dev/null | tr '\n' ' '); \ + else \ + echo "Finding packages with *_integration_test.go files..."; \ + dirs=$$(find . -name '*_integration_test.go' -not -path './vendor/*' -exec dirname {} \; 2>/dev/null | sort -u | tr '\n' ' '); \ + pkgs=$$(if [ -n "$$dirs" ]; then go list $$dirs 2>/dev/null | tr '\n' ' '; fi); \ + fi; \ + if [ -z "$$pkgs" ]; then \ + echo "No integration test packages found"; \ + else \ + echo "Packages: $$pkgs"; \ + echo "Running packages sequentially (-p=1) to avoid Docker container conflicts"; \ + if [ "$(LOW_RESOURCE)" = "1" ]; then \ + echo "LOW_RESOURCE mode: -parallel=1, race detector disabled"; \ + fi; \ + if [ -n "$(GOTESTSUM)" ]; then \ + echo "Running integration tests with gotestsum"; \ + gotestsum --format testname -- \ + -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying integration tests once..."; \ + gotestsum --format testname -- \ + -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + else \ + go test -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying integration tests once..."; \ + go test -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + fi; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Integration tests passed$(GREEN) ✔️$(NC)" + +.PHONY: test-all +test-all: + $(call print_title,Running all tests (unit + integration)) + $(call print_title,Running unit tests) + $(MAKE) test-unit + $(call print_title,Running integration tests) + $(MAKE) test-integration + @echo "$(GREEN)$(BOLD)[ok]$(NC) All tests passed$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Coverage Commands +#------------------------------------------------------- + +.PHONY: coverage-unit +coverage-unit: + $(call print_title,Running Go unit tests with coverage) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + @set -e; mkdir -p $(TEST_REPORTS_DIR); \ + if [ -n "$(PKG)" ]; then \ + echo "Using specified package: $(PKG)"; \ + pkgs=$$(go list $(PKG) 2>/dev/null | grep -v '/tests' | tr '\n' ' '); \ + else \ + pkgs=$$(go list ./... | grep -v '/tests'); \ + fi; \ + if [ -z "$$pkgs" ]; then \ + echo "No unit test packages found"; \ + else \ + echo "Packages: $$pkgs"; \ + if [ -n "$(GOTESTSUM)" ]; then \ + echo "Running unit tests with gotestsum (coverage enabled)"; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/unit_coverage.out $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying unit tests once..."; \ + gotestsum --format testname -- -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/unit_coverage.out $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + else \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/unit_coverage.out $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying unit tests once..."; \ + go test -tags=unit -v $(LOW_RES_P_FLAG) $(LOW_RES_RACE_FLAG) $(LOW_RES_PARALLEL_FLAG) -count=1 $(GO_TEST_LDFLAGS) -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/unit_coverage.out $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + fi; \ + if [ -f .ignorecoverunit ]; then \ + echo "Filtering coverage with .ignorecoverunit patterns..."; \ + patterns=$$(grep -v '^#' .ignorecoverunit | grep -v '^$$' | tr '\n' '|' | sed 's/|$$//'); \ + if [ -n "$$patterns" ]; then \ + regex_patterns=$$(echo "$$patterns" | sed 's/[][(){}+?^$$\\|]/\\&/g' | sed 's/\./\\./g' | sed 's/\*/.*/g'); \ + head -1 $(TEST_REPORTS_DIR)/unit_coverage.out > $(TEST_REPORTS_DIR)/unit_coverage_filtered.out; \ + tail -n +2 $(TEST_REPORTS_DIR)/unit_coverage.out | grep -vE "$$regex_patterns" >> $(TEST_REPORTS_DIR)/unit_coverage_filtered.out || true; \ + mv $(TEST_REPORTS_DIR)/unit_coverage_filtered.out $(TEST_REPORTS_DIR)/unit_coverage.out; \ + echo "Excluded patterns: $$patterns"; \ + fi; \ + fi; \ + echo "----------------------------------------"; \ + go tool cover -func=$(TEST_REPORTS_DIR)/unit_coverage.out | grep total | awk '{print "Total coverage: " $$3}'; \ + echo "----------------------------------------"; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Unit coverage report generated$(GREEN) ✔️$(NC)" + +.PHONY: coverage-integration +coverage-integration: + $(call print_title,Running integration tests with testcontainers (coverage enabled)) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + $(call check_command,docker,"Install Docker from https://docs.docker.com/get-docker/") + @set -e; mkdir -p $(TEST_REPORTS_DIR); \ + if [ -n "$(PKG)" ]; then \ + echo "Using specified package: $(PKG)"; \ + pkgs=$$(go list $(PKG) 2>/dev/null | tr '\n' ' '); \ + else \ + echo "Finding packages with *_integration_test.go files..."; \ + dirs=$$(find . -name '*_integration_test.go' -not -path './vendor/*' -exec dirname {} \; 2>/dev/null | sort -u | tr '\n' ' '); \ + pkgs=$$(if [ -n "$$dirs" ]; then go list $$dirs 2>/dev/null | tr '\n' ' '; fi); \ + fi; \ + if [ -z "$$pkgs" ]; then \ + echo "No integration test packages found"; \ + else \ + echo "Packages: $$pkgs"; \ + echo "Running packages sequentially (-p=1) to avoid Docker container conflicts"; \ + if [ "$(LOW_RESOURCE)" = "1" ]; then \ + echo "LOW_RESOURCE mode: -parallel=1, race detector disabled"; \ + fi; \ + if [ -n "$(GOTESTSUM)" ]; then \ + echo "Running testcontainers integration tests with gotestsum (coverage enabled)"; \ + gotestsum --format testname -- \ + -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/integration_coverage.out \ + $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying integration tests once..."; \ + gotestsum --format testname -- \ + -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/integration_coverage.out \ + $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + else \ + go test -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/integration_coverage.out \ + $$pkgs || { \ + if [ "$(RETRY_ON_FAIL)" = "1" ]; then \ + echo "Retrying integration tests once..."; \ + go test -tags=integration -v $(LOW_RES_RACE_FLAG) -count=1 -timeout 600s $(GO_TEST_LDFLAGS) \ + -p 1 $(LOW_RES_PARALLEL_FLAG) \ + -run '$(RUN_PATTERN)' -covermode=atomic -coverprofile=$(TEST_REPORTS_DIR)/integration_coverage.out \ + $$pkgs; \ + else \ + exit 1; \ + fi; \ + }; \ + fi; \ + echo "----------------------------------------"; \ + go tool cover -func=$(TEST_REPORTS_DIR)/integration_coverage.out | grep total | awk '{print "Total coverage: " $$3}'; \ + echo "----------------------------------------"; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Integration coverage report generated$(GREEN) ✔️$(NC)" + +.PHONY: coverage +coverage: + $(call print_title,Running all coverage targets) + $(MAKE) coverage-unit + $(MAKE) coverage-integration + @echo "$(GREEN)$(BOLD)[ok]$(NC) All coverage reports generated$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Code Quality Commands +#------------------------------------------------------- + +.PHONY: lint +lint: + $(call print_title,Running linters on all packages (read-only)) + $(call check_command,golangci-lint,"go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)") + @golangci-lint run ./... + @echo "$(GREEN)$(BOLD)[ok]$(NC) Lint checks passed successfully$(GREEN) ✔️$(NC)" + +.PHONY: lint-fix +lint-fix: + $(call print_title,Running linters with auto-fix on all packages) + $(call check_command,golangci-lint,"go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@$(GOLANGCI_LINT_VERSION)") + @golangci-lint run --fix ./... + @echo "$(GREEN)$(BOLD)[ok]$(NC) Lint auto-fix completed$(GREEN) ✔️$(NC)" + +.PHONY: format +format: + $(call print_title,Formatting code in all packages) + $(call check_command,gofmt,"Install Go from https://golang.org/doc/install") + @gofmt -w ./ + @echo "$(GREEN)$(BOLD)[ok]$(NC) All go files formatted$(GREEN) ✔️$(NC)" + +.PHONY: check-tests +check-tests: + $(call print_title,Verifying test coverage for packages) + @if [ -f "./scripts/check-tests.sh" ]; then \ + sh ./scripts/check-tests.sh; \ + else \ + echo "Running basic test coverage check..."; \ + go test -cover ./...; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Test coverage verification completed$(GREEN) ✔️$(NC)" + +.PHONY: vet +vet: + $(call print_title,Running go vet on all packages) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + go vet ./... + @echo "$(GREEN)$(BOLD)[ok]$(NC) go vet completed successfully$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Git Hook Commands +#------------------------------------------------------- + +.PHONY: setup-git-hooks +setup-git-hooks: + $(call print_title,Installing and configuring git hooks) + @hooks_dir=$$(git rev-parse --git-path hooks); \ + if [ ! -d .githooks ]; then \ + echo "No .githooks directory found, skipping"; \ + exit 0; \ + fi; \ + mkdir -p "$$hooks_dir"; \ + for hook_dir in .githooks/*/; do \ + if [ -d "$$hook_dir" ]; then \ + for FILE in "$$hook_dir"*; do \ + if [ -f "$$FILE" ]; then \ + hook_name=$$(basename "$$FILE"); \ + cp "$$FILE" "$$hooks_dir/$$hook_name"; \ + chmod +x "$$hooks_dir/$$hook_name"; \ + fi; \ + done; \ + fi; \ + done + @echo "$(GREEN)$(BOLD)[ok]$(NC) All hooks installed and updated$(GREEN) ✔️$(NC)" + +.PHONY: check-hooks +check-hooks: + $(call print_title,Verifying git hooks installation status) + @hooks_dir=$$(git rev-parse --git-path hooks); \ + err=0; \ + for hook_dir in .githooks/*; do \ + if [ -d "$$hook_dir" ]; then \ + for FILE in "$$hook_dir"/*; do \ + if [ -f "$$FILE" ]; then \ + f=$$(basename -- $$hook_dir)/$$(basename -- $$FILE); \ + hook_name=$$(basename -- $$FILE); \ + FILE2=$$hooks_dir/$$hook_name; \ + if [ -f "$$FILE2" ]; then \ + if cmp -s "$$FILE" "$$FILE2"; then \ + echo "$(GREEN)$(BOLD)[ok]$(NC) Hook file $$f installed and updated$(GREEN) ✔️$(NC)"; \ + else \ + echo "$(RED)Hook file $$f installed but out-of-date [OUT-OF-DATE] ✗$(NC)"; \ + err=1; \ + fi; \ + else \ + echo "$(RED)Hook file $$f not installed [NOT INSTALLED] ✗$(NC)"; \ + err=1; \ + fi; \ + fi; \ + done; \ + fi; \ + done; \ + if [ $$err -ne 0 ]; then \ + printf "\nRun %smake setup-git-hooks%s to setup your development environment, then try again.\n\n" "$(BOLD)" "$(NC)"; \ + exit 1; \ + else \ + echo "$(GREEN)$(BOLD)[ok]$(NC) All hooks are properly installed$(GREEN) ✔️$(NC)"; \ + fi + +.PHONY: check-envs +check-envs: + $(call print_title,Checking git hooks and environment files for security issues) + $(MAKE) check-hooks + @echo "Checking for exposed secrets in environment files..." + @found=0; \ + for pattern in '.env' '.env.*' '*.env'; do \ + files=$$(find . -name "$$pattern" \ + -not -name '*.example' -not -name '*.sample' -not -name '*.template' \ + -not -path './vendor/*' -not -path './.git/*' 2>/dev/null); \ + if [ -n "$$files" ]; then \ + if echo "$$files" | xargs grep -iqE '^[[:space:]]*(export[[:space:]]+)?[A-Z0-9_]*(SECRET|PASSWORD|TOKEN|API_KEY|PRIVATE_KEY|CREDENTIAL|AWS_ACCESS_KEY|DB_PASS)[A-Z0-9_]*=[[:space:]]*[^#[:space:]]' 2>/dev/null; then \ + echo "$(RED)Warning: Potential secrets found in environment files:$(NC)"; \ + echo "$$files" | xargs grep -ilE '^[[:space:]]*(export[[:space:]]+)?[A-Z0-9_]*(SECRET|PASSWORD|TOKEN|API_KEY|PRIVATE_KEY|CREDENTIAL|AWS_ACCESS_KEY|DB_PASS)[A-Z0-9_]*=[[:space:]]*[^#[:space:]]' 2>/dev/null; \ + found=1; \ + fi; \ + fi; \ + done; \ + if [ $$found -ne 0 ]; then \ + echo "$(RED)Make sure these files are in .gitignore and not committed to the repository.$(NC)"; \ + exit 1; \ + else \ + echo "$(GREEN)No exposed secrets found in environment files$(GREEN) ✔️$(NC)"; \ + fi + @echo "$(GREEN)$(BOLD)[ok]$(NC) Environment check completed$(GREEN) ✔️$(NC)" + +#------------------------------------------------------- +# Development Commands +#------------------------------------------------------- + +.PHONY: tidy +tidy: + $(call print_title,Cleaning dependencies) + $(call check_command,go,"Install Go from https://golang.org/doc/install") + go mod tidy + @echo "$(GREEN)$(BOLD)[ok]$(NC) Dependencies cleaned successfully$(GREEN) ✔️$(NC)" + +SARIF ?= 0 + +.PHONY: sec +sec: + $(call print_title,Running security checks using gosec) + @if ! command -v gosec >/dev/null 2>&1; then \ + echo "Installing gosec..."; \ + go install github.com/securego/gosec/v2/cmd/gosec@$(GOSEC_VERSION); \ + fi + @if find . -name "*.go" -type f -not -path './vendor/*' | grep -q .; then \ + echo "Running security checks on all packages..."; \ + if [ "$(SARIF)" = "1" ]; then \ + echo "Generating SARIF output: gosec-report.sarif"; \ + if gosec -fmt sarif -out gosec-report.sarif ./...; then \ + echo "$(GREEN)$(BOLD)[ok]$(NC) SARIF report generated: gosec-report.sarif$(GREEN) ✔️$(NC)"; \ + else \ + printf "\n%s%sSecurity issues found by gosec. Please address them before proceeding.%s\n\n" "$(BOLD)" "$(RED)" "$(NC)"; \ + echo "SARIF report with details: gosec-report.sarif"; \ + exit 1; \ + fi; \ + else \ + if gosec ./...; then \ + echo "$(GREEN)$(BOLD)[ok]$(NC) Security checks completed$(GREEN) ✔️$(NC)"; \ + else \ + printf "\n%s%sSecurity issues found by gosec. Please address them before proceeding.%s\n\n" "$(BOLD)" "$(RED)" "$(NC)"; \ + exit 1; \ + fi; \ + fi; \ + else \ + echo "No Go files found, skipping security checks"; \ + fi + +#------------------------------------------------------- +# Release Commands +#------------------------------------------------------- + +.PHONY: goreleaser +goreleaser: + $(call print_title,Creating release snapshot with goreleaser) + $(call check_command,goreleaser,"go install github.com/goreleaser/goreleaser@latest") + goreleaser release --snapshot --skip=publish --clean + @echo "$(GREEN)$(BOLD)[ok]$(NC) Release snapshot created successfully$(GREEN) ✔️$(NC)" diff --git a/assert/doc.go b/assert/doc.go new file mode 100644 index 0000000..bed4dd1 --- /dev/null +++ b/assert/doc.go @@ -0,0 +1,5 @@ +// Package assert provides context-scoped production assertions that validate domain +// invariants at runtime without panicking. Every assertion failure returns an error, +// records a span event, and increments a metric counter. Includes a predicates library +// for financial domain validation alongside general-purpose checks. +package assert diff --git a/constants/doc.go b/constants/doc.go new file mode 100644 index 0000000..b30fdab --- /dev/null +++ b/constants/doc.go @@ -0,0 +1,4 @@ +// Package constants provides shared observability constants including OTEL attribute +// prefixes, metric names, event names, header constants, label sanitization utilities, +// and sensitive field detection for cross-cutting redaction. +package constants diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..160ee2c --- /dev/null +++ b/go.mod @@ -0,0 +1,3 @@ +module github.com/LerianStudio/lib-observability + +go 1.25.5 diff --git a/log/doc.go b/log/doc.go new file mode 100644 index 0000000..3fde801 --- /dev/null +++ b/log/doc.go @@ -0,0 +1,6 @@ +// Package log provides a minimal, implementation-agnostic Logger interface with typed +// Field constructors, severity levels, and production-safe error sanitization. +// +// Implementations include GoLogger (stdlib-based with CWE-117 log-injection prevention) +// and NopLogger (no-op for tests and disabled logging). +package log diff --git a/metrics/doc.go b/metrics/doc.go new file mode 100644 index 0000000..f9ff7b3 --- /dev/null +++ b/metrics/doc.go @@ -0,0 +1,5 @@ +// Package metrics provides a thread-safe MetricsFactory with lazy instrument caching +// and a fluent builder API for Counters, Gauges, and Histograms. All operations return +// explicit errors. Includes pre-configured domain metric recorders and system +// infrastructure gauges. +package metrics diff --git a/runtime/doc.go b/runtime/doc.go new file mode 100644 index 0000000..a640644 --- /dev/null +++ b/runtime/doc.go @@ -0,0 +1,5 @@ +// Package runtime provides policy-driven panic recovery with full observability +// integration: span event recording, panic counter metrics, structured logging, +// and optional external error reporter forwarding. Includes safe goroutine launchers +// and production mode for stack trace redaction. +package runtime diff --git a/scripts/makefile_colors.mk b/scripts/makefile_colors.mk new file mode 100644 index 0000000..7edc0e5 --- /dev/null +++ b/scripts/makefile_colors.mk @@ -0,0 +1,14 @@ +# Colors and formatting for Makefiles +# This file contains standardized color and formatting definitions +# to be included in all component Makefiles + +# ANSI color codes +BLUE := \033[34m +NC := \033[0m +BOLD := \033[1m +RED := \033[31m +MAGENTA := \033[35m +YELLOW := \033[33m +GREEN := \033[32m +CYAN := \033[36m +WHITE := \033[37m diff --git a/scripts/makefile_utils.mk b/scripts/makefile_utils.mk new file mode 100644 index 0000000..3fa01fe --- /dev/null +++ b/scripts/makefile_utils.mk @@ -0,0 +1,11 @@ +# Makefile utility functions for lib-observability +# Included by the root Makefile + +# Check that a command exists, or print install instructions and exit. +# Usage: $(call check_command,,) +define check_command + @command -v $(1) >/dev/null 2>&1 || { \ + echo "$(RED)$(BOLD)Error:$(NC) '$(1)' is not installed. $(2)"; \ + exit 1; \ + } +endef diff --git a/tracing/doc.go b/tracing/doc.go new file mode 100644 index 0000000..61b4923 --- /dev/null +++ b/tracing/doc.go @@ -0,0 +1,5 @@ +// Package tracing provides OpenTelemetry SDK lifecycle management, trace context +// propagation for HTTP/gRPC/message queues, span error and event recording helpers, +// struct-to-attribute conversion with sensitive field redaction, and custom +// SpanProcessor implementations. +package tracing diff --git a/zap/doc.go b/zap/doc.go new file mode 100644 index 0000000..4b66b6c --- /dev/null +++ b/zap/doc.go @@ -0,0 +1,4 @@ +// Package zap provides a zap adapter implementing the Logger interface with automatic +// trace_id and span_id injection into every log entry. Bridges zap output to the +// OpenTelemetry Logs SDK via otelzap for unified log collection through the OTLP pipeline. +package zap From 538baabf6fd33fe2c1e2eb92950cc10fd34e4bc0 Mon Sep 17 00:00:00 2001 From: Brecci Date: Thu, 7 May 2026 17:05:12 -0300 Subject: [PATCH 03/26] fix: address review feedback Simplify .idea/* to .idea/ in .gitignore, move @semantic-release/exec to extra_plugins with exact version pin, and bump Go to 1.25.9 matching lib-commons. X-Lerian-Ref: 0x1 --- .github/workflows/release.yml | 4 +--- .gitignore | 2 +- go.mod | 2 +- 3 files changed, 3 insertions(+), 5 deletions(-) diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml index 933867b..0b1dee7 100644 --- a/.github/workflows/release.yml +++ b/.github/workflows/release.yml @@ -57,9 +57,6 @@ jobs: git_user_signingkey: true git_commit_gpgsign: true - - name: Install plugin @semantic-release/exec - run: npm install --save-dev @semantic-release/exec@^6.0.3 - - name: Semantic Release uses: cycjimmy/semantic-release-action@v4 id: semantic @@ -67,6 +64,7 @@ jobs: ci: false semantic_version: 23.0.8 extra_plugins: | + @semantic-release/exec@6.0.3 conventional-changelog-conventionalcommits@v7.0.2 env: GITHUB_TOKEN: ${{ steps.app-token.outputs.token }} diff --git a/.gitignore b/.gitignore index bcfa8e5..946933c 100644 --- a/.gitignore +++ b/.gitignore @@ -1,4 +1,4 @@ -.idea/* +.idea/ .DS_Store .claude/ .mcp.json diff --git a/go.mod b/go.mod index 160ee2c..c078633 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,3 @@ module github.com/LerianStudio/lib-observability -go 1.25.5 +go 1.25.9 From 1b0d7186d17c8486a8be80e7a6d0436f8263d831 Mon Sep 17 00:00:00 2001 From: Brecci Date: Thu, 7 May 2026 18:01:06 -0300 Subject: [PATCH 04/26] chore(deps): add observability dependencies Add OpenTelemetry SDK, zap, gopsutil, shopspring/decimal, uuid and all transitive dependencies required by the migrated observability packages. X-Lerian-Ref: 0x1 --- go.mod | 52 +++++++++++++++++++++++++ go.sum | 117 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 169 insertions(+) create mode 100644 go.sum diff --git a/go.mod b/go.mod index c078633..29d986e 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,55 @@ module github.com/LerianStudio/lib-observability go 1.25.9 + +require ( + github.com/gofiber/fiber/v2 v2.52.13 + github.com/google/uuid v1.6.0 + github.com/shirou/gopsutil v3.21.11+incompatible + github.com/shopspring/decimal v1.4.0 + go.opentelemetry.io/contrib/bridges/otelzap v0.18.0 + go.opentelemetry.io/otel v1.43.0 + go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.19.0 + go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc v1.43.0 + go.opentelemetry.io/otel/exporters/otlp/otlptrace v1.43.0 + go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.43.0 + go.opentelemetry.io/otel/log v0.19.0 + go.opentelemetry.io/otel/metric v1.43.0 + go.opentelemetry.io/otel/sdk v1.43.0 + go.opentelemetry.io/otel/sdk/log v0.19.0 + go.opentelemetry.io/otel/sdk/metric v1.43.0 + go.opentelemetry.io/otel/trace v1.43.0 + go.uber.org/zap v1.28.0 + google.golang.org/grpc v1.81.0 +) + +require ( + github.com/andybalholm/brotli v1.2.0 // indirect + github.com/cenkalti/backoff/v5 v5.0.3 // indirect + github.com/cespare/xxhash/v2 v2.3.0 // indirect + github.com/clipperhouse/uax29/v2 v2.7.0 // indirect + github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect + github.com/go-logr/logr v1.4.3 // indirect + github.com/go-logr/stdr v1.2.2 // indirect + github.com/go-ole/go-ole v1.3.0 // indirect + github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 // indirect + github.com/klauspost/compress v1.18.5 // indirect + github.com/mattn/go-colorable v0.1.14 // indirect + github.com/mattn/go-isatty v0.0.20 // indirect + github.com/mattn/go-runewidth v0.0.21 // indirect + github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect + github.com/tklauser/go-sysconf v0.3.16 // indirect + github.com/tklauser/numcpus v0.11.0 // indirect + github.com/valyala/bytebufferpool v1.0.0 // indirect + github.com/valyala/fasthttp v1.69.0 // indirect + github.com/yusufpapurcu/wmi v1.2.4 // indirect + go.opentelemetry.io/auto/sdk v1.2.1 // indirect + go.opentelemetry.io/proto/otlp v1.10.0 // indirect + go.uber.org/multierr v1.11.0 // indirect + golang.org/x/net v0.52.0 // indirect + golang.org/x/sys v0.42.0 // indirect + golang.org/x/text v0.35.0 // indirect + google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 // indirect + google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 // indirect + google.golang.org/protobuf v1.36.11 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..b6c433a --- /dev/null +++ b/go.sum @@ -0,0 +1,117 @@ +github.com/andybalholm/brotli v1.2.0 h1:ukwgCxwYrmACq68yiUqwIWnGY0cTPox/M94sVwToPjQ= 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00:00:00 2001 From: Brecci Date: Thu, 7 May 2026 18:01:32 -0300 Subject: [PATCH 05/26] feat: migrate observability packages from lib-commons Port all observability and telemetry packages from lib-commons to their new flat layout at module root. Packages migrated: constants (OTEL attrs, metric names, event names, headers), redaction (sensitive field detection, extensible via variadic extra fields), root observability package (context carriers: ContextWithTracer, ContextWithMetricFactory, ContextWithLogger, ContextWithSpanAttributes, AttributesFromContext; system metrics: GetCPUUsage, GetMemUsage), log (Logger interface, GoLogger with CWE-117 prevention, NopLogger, sanitizer), metrics (MetricsFactory with fluent Counter/Gauge/Histogram builders, domain recorders), runtime (panic recovery, PanicMetrics, RecordPanicToSpan, SafeGo, ErrorReporter), assert (Asserter, AssertionMetrics, financial predicates), tracing (OpenTelemetry SDK bootstrap, propagation, span helpers, redaction engine; package renamed from opentelemetry to tracing), zap (zap adapter with OTEL bridge and trace_id/span_id injection). X-Lerian-Ref: 0x1 --- assert/assert.go | 511 ++++++++++++++++++ assert/predicates.go | 355 +++++++++++++ constants/headers.go | 10 + constants/log.go | 4 + constants/metadata.go | 8 + constants/obfuscation.go | 6 + constants/opentelemetry.go | 73 +++ log/go_logger.go | 212 ++++++++ log/log.go | 116 +++++ log/nil.go | 36 ++ log/sanitizer.go | 41 ++ metrics/account.go | 21 + metrics/builders.go | 243 +++++++++ metrics/metrics.go | 388 ++++++++++++++ metrics/operation_routes.go | 21 + metrics/system.go | 60 +++ metrics/transaction.go | 21 + metrics/transaction_routes.go | 21 + observability.go | 272 ++++++++++ redaction/doc.go | 6 + redaction/sensitive_fields.go | 287 ++++++++++ runtime/error_reporter.go | 198 +++++++ runtime/goroutine.go | 93 ++++ runtime/metrics.go | 136 +++++ runtime/policy.go | 28 + runtime/recover.go | 229 ++++++++ runtime/tracing.go | 137 +++++ system.go | 60 +++ tracing/obfuscation.go | 264 ++++++++++ tracing/otel.go | 955 ++++++++++++++++++++++++++++++++++ tracing/processor.go | 92 ++++ zap/injector.go | 153 ++++++ zap/zap.go | 296 +++++++++++ 33 files changed, 5353 insertions(+) create mode 100644 assert/assert.go create mode 100644 assert/predicates.go create mode 100644 constants/headers.go create mode 100644 constants/log.go create mode 100644 constants/metadata.go create mode 100644 constants/obfuscation.go create mode 100644 constants/opentelemetry.go create mode 100644 log/go_logger.go create mode 100644 log/log.go create mode 100644 log/nil.go create mode 100644 log/sanitizer.go create mode 100644 metrics/account.go create mode 100644 metrics/builders.go create mode 100644 metrics/metrics.go create mode 100644 metrics/operation_routes.go create mode 100644 metrics/system.go create mode 100644 metrics/transaction.go create mode 100644 metrics/transaction_routes.go create mode 100644 observability.go create mode 100644 redaction/doc.go create mode 100644 redaction/sensitive_fields.go create mode 100644 runtime/error_reporter.go create mode 100644 runtime/goroutine.go create mode 100644 runtime/metrics.go create mode 100644 runtime/policy.go create mode 100644 runtime/recover.go create mode 100644 runtime/tracing.go create mode 100644 system.go create mode 100644 tracing/obfuscation.go create mode 100644 tracing/otel.go create mode 100644 tracing/processor.go create mode 100644 zap/injector.go create mode 100644 zap/zap.go diff --git a/assert/assert.go b/assert/assert.go new file mode 100644 index 0000000..6502d6a --- /dev/null +++ b/assert/assert.go @@ -0,0 +1,511 @@ +package assert + +import ( + "context" + "errors" + "fmt" + "os" + "reflect" + goruntime "runtime" + "runtime/debug" + "strconv" + "strings" + "sync" + + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/codes" + "go.opentelemetry.io/otel/trace" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "github.com/LerianStudio/lib-observability/runtime" +) + +// Logger defines the minimal logging interface required by assertions. +// This interface is satisfied by github.com/LerianStudio/lib-observability/log.Logger. +type Logger interface { + Log(ctx context.Context, level log.Level, msg string, fields ...log.Field) +} + +// Asserter evaluates invariants and emits telemetry on failure. +type Asserter struct { + ctx context.Context + logger Logger + component string + operation string +} + +// ErrAssertionFailed is the sentinel error for failed assertions. +var ErrAssertionFailed = errors.New("assertion failed") + +// AssertionError represents a failed assertion with rich context. +type AssertionError struct { + Assertion string + Message string + Component string + Operation string + Details string +} + +// Error returns the formatted assertion failure message. +func (entry *AssertionError) Error() string { + if entry == nil { + return ErrAssertionFailed.Error() + } + + if entry.Details == "" { + return "assertion failed: " + entry.Message + } + + return "assertion failed: " + entry.Message + "\n" + entry.Details +} + +// Unwrap returns the sentinel assertion error for errors.Is. +func (entry *AssertionError) Unwrap() error { + return ErrAssertionFailed +} + +// New creates an Asserter with context, logging, and labels. +// component and operation are used for telemetry labeling. +// +//nolint:contextcheck // Intentionally creates a fallback context when nil is passed +func New(ctx context.Context, logger Logger, component, operation string) *Asserter { + if ctx == nil { + ctx = context.Background() + } + + return &Asserter{ + ctx: ctx, + logger: logger, + component: component, + operation: operation, + } +} + +// That returns an error if ok is false. Use for general-purpose assertions. +// +// Example: +// +// if err := asserter.That(ctx, len(items) > 0, "items must not be empty", "count", len(items)); err != nil { +// return err +// } +func (asserter *Asserter) That(ctx context.Context, ok bool, msg string, kv ...any) error { + if ok { + return nil + } + + return asserter.fail(ctx, "That", msg, kv...) +} + +// NotNil returns an error if v is nil. This function correctly handles both untyped nil +// and typed nil (nil interface values with concrete types). +// +// Example: +// +// if err := asserter.NotNil(ctx, config, "config must be initialized"); err != nil { +// return err +// } +func (asserter *Asserter) NotNil(ctx context.Context, v any, msg string, kv ...any) error { + if !isNil(v) { + return nil + } + + return asserter.fail(ctx, "NotNil", msg, kv...) +} + +// NotEmpty returns an error if s is an empty string. +// +// Example: +// +// if err := asserter.NotEmpty(ctx, userID, "userID must be provided"); err != nil { +// return err +// } +func (asserter *Asserter) NotEmpty(ctx context.Context, s, msg string, kv ...any) error { + if s != "" { + return nil + } + + return asserter.fail(ctx, "NotEmpty", msg, kv...) +} + +// NoError returns an error if err is not nil. The error message and type are +// automatically included in the assertion context for debugging. +// +// Example: +// +// if err := asserter.NoError(ctx, err, "compute must succeed", "input", input); err != nil { +// return err +// } +func (asserter *Asserter) NoError(ctx context.Context, err error, msg string, kv ...any) error { + if err == nil { + return nil + } + + // Prepend error and error_type to key-value pairs for richer debugging + // errorKVPairs: 2 pairs added (error + error_type), each pair = 2 elements + const errorKVPairs = 4 + + kvWithError := make([]any, 0, len(kv)+errorKVPairs) + kvWithError = append(kvWithError, "error", err.Error()) + kvWithError = append(kvWithError, "error_type", fmt.Sprintf("%T", err)) + kvWithError = append(kvWithError, kv...) + + return asserter.fail(ctx, "NoError", msg, kvWithError...) +} + +// Never always returns an error. Use for code paths that should be unreachable. +// +// Example: +// +// return asserter.Never(ctx, "unhandled status", "status", status) +func (asserter *Asserter) Never(ctx context.Context, msg string, kv ...any) error { + return asserter.fail(ctx, "Never", msg, kv...) +} + +// Halt terminates the current goroutine if err is not nil. +// Use this after a failed assertion in goroutines to prevent further execution. +func (asserter *Asserter) Halt(err error) { + if err != nil { + goruntime.Goexit() + } +} + +const maxValueLength = 200 // Truncate values longer than this + +// truncateValue truncates long values for logging safety. +// This prevents log bloat and reduces risk of sensitive data exposure. +func truncateValue(v any) string { + s := fmt.Sprintf("%v", v) + if len(s) <= maxValueLength { + return s + } + + return s[:maxValueLength] + "... (truncated " + strconv.Itoa(len(s)-maxValueLength) + " chars)" +} + +func (asserter *Asserter) fail(ctx context.Context, assertion, msg string, kv ...any) error { + ctx, logger, component, operation := asserter.values(ctx) + contextPairs := withContextPairs(assertion, component, operation, kv) + details := formatKeyValueLines(contextPairs) + + stack := []byte(nil) + if shouldIncludeStack() { + stack = debug.Stack() + } + + // Emit structured fields for log aggregation; fall back to single-string format + // when no logger is available (stderr path) or for the stack trace supplement. + logAssertionStructured(logger, assertion, component, operation, msg, details) + + if len(stack) > 0 && logger != nil { + logger.Log(context.Background(), log.LevelError, "assertion stack trace", + log.String("assertion_type", assertion), + log.String("stack_trace", string(stack)), + ) + } + + recordAssertionObservability(ctx, assertion, msg, stack, component, operation) + + return &AssertionError{ + Assertion: assertion, + Message: msg, + Component: component, + Operation: operation, + Details: details, + } +} + +func (asserter *Asserter) values(ctx context.Context) (context.Context, Logger, string, string) { + if asserter == nil { + if ctx == nil { + ctx = context.Background() + } + + return ctx, nil, "", "" + } + + if ctx == nil { + ctx = asserter.ctx + } + + if ctx == nil { + ctx = context.Background() + } + + return ctx, asserter.logger, asserter.component, asserter.operation +} + +// shouldIncludeStack controls whether assertion failures include a stack trace. +// +// Stack traces are opt-out: they are included by default and suppressed when +// production mode is detected. This is intentional because during development +// and testing, stack traces are invaluable for debugging assertion failures, +// while in production they add noise and may expose internal paths. +// +// To disable stack traces in production, use either: +// - runtime.SetProductionMode(true) during application startup (preferred) +// - Set ENV=production or GO_ENV=production environment variables +func shouldIncludeStack() bool { + // Primary check: use runtime.IsProductionMode() which is explicitly + // set during application startup via runtime.SetProductionMode(true). + if runtime.IsProductionMode() { + return false + } + + // Fallback: check environment variables for cases where production mode + // has not been explicitly configured via the runtime package. + env := strings.TrimSpace(os.Getenv("ENV")) + goEnv := strings.TrimSpace(os.Getenv("GO_ENV")) + + return !strings.EqualFold(env, "production") && !strings.EqualFold(goEnv, "production") +} + +// contextPairsCapacity is the capacity for the fixed context pairs (assertion, component, operation). +const contextPairsCapacity = 6 + +func withContextPairs(assertion, component, operation string, kv []any) []any { + contextPairs := make([]any, 0, len(kv)+contextPairsCapacity) + contextPairs = append(contextPairs, "assertion", assertion) + + if component != "" { + contextPairs = append(contextPairs, "component", component) + } + + if operation != "" { + contextPairs = append(contextPairs, "operation", operation) + } + + contextPairs = append(contextPairs, kv...) + + return contextPairs +} + +func formatKeyValueLines(kv []any) string { + if len(kv) == 0 { + return "" + } + + var sb strings.Builder + + for i := 0; i < len(kv); i += 2 { + if i > 0 { + sb.WriteString("\n") + } + + var value any + if i+1 < len(kv) { + value = kv[i+1] + } else { + value = "MISSING_VALUE" + } + + fmt.Fprintf(&sb, " %v=%v", kv[i], truncateValue(value)) + } + + return sb.String() +} + +// logAssertionStructured emits assertion failure as individual structured log fields +// for better searchability in log aggregation systems (Loki, Elasticsearch, etc.). +func logAssertionStructured(logger Logger, assertion, component, operation, msg, details string) { + if logger == nil { + // Fall back to stderr for emergency visibility + fmt.Fprintln(os.Stderr, "ASSERTION FAILED: "+msg) + + return + } + + fields := []log.Field{ + log.String("assertion_type", assertion), + log.String("message", msg), + } + + if component != "" { + fields = append(fields, log.String("component", component)) + } + + if operation != "" { + fields = append(fields, log.String("operation", operation)) + } + + if details != "" { + fields = append(fields, log.String("details", details)) + } + + logger.Log(context.Background(), log.LevelError, "ASSERTION FAILED", fields...) +} + +// logAssertion is kept for backward compatibility with code paths that only +// have a pre-formatted message string (e.g. when logger is nil and we write to stderr). +func logAssertion(logger Logger, message string) { + if logger != nil { + logger.Log(context.Background(), log.LevelError, message) + return + } + + fmt.Fprintln(os.Stderr, message) +} + +// isNil checks if a value is nil, handling both untyped nil and typed nil +// (nil interface values with concrete types). +func isNil(v any) bool { + if v == nil { + return true + } + + rv := reflect.ValueOf(v) + switch rv.Kind() { + case reflect.Pointer, reflect.Interface, reflect.Slice, reflect.Map, reflect.Chan, reflect.Func: + return rv.IsNil() + default: + return false + } +} + +// AssertionSpanEventName is the event name used when recording assertion failures on spans. +const AssertionSpanEventName = constant.EventAssertionFailed + +// AssertionMetrics provides assertion-related metrics using OpenTelemetry. +// It wraps lib-observability's MetricsFactory for consistent metric handling. +type AssertionMetrics struct { + factory *metrics.MetricsFactory +} + +// assertionFailedMetric defines the metric for counting failed assertions. +var assertionFailedMetric = metrics.Metric{ + Name: constant.MetricAssertionFailedTotal, + Unit: "1", + Description: "Total number of failed assertions", +} + +var ( + assertionMetricsInstance *AssertionMetrics + assertionMetricsMu sync.RWMutex +) + +// InitAssertionMetrics initializes assertion metrics with the provided MetricsFactory. +// This should be called once during application startup after telemetry is initialized. +func InitAssertionMetrics(factory *metrics.MetricsFactory) { + assertionMetricsMu.Lock() + defer assertionMetricsMu.Unlock() + + if factory == nil { + return + } + + if assertionMetricsInstance != nil { + return + } + + assertionMetricsInstance = &AssertionMetrics{factory: factory} +} + +// GetAssertionMetrics returns the singleton AssertionMetrics instance. +// Returns nil if InitAssertionMetrics has not been called. +func GetAssertionMetrics() *AssertionMetrics { + assertionMetricsMu.RLock() + defer assertionMetricsMu.RUnlock() + + return assertionMetricsInstance +} + +// ResetAssertionMetrics clears the assertion metrics singleton (useful for tests). +func ResetAssertionMetrics() { + assertionMetricsMu.Lock() + defer assertionMetricsMu.Unlock() + + assertionMetricsInstance = nil +} + +// RecordAssertionFailed increments the assertion_failed_total counter with labels. +// If metrics are not initialized, this is a no-op. +func (am *AssertionMetrics) RecordAssertionFailed( + ctx context.Context, + component, operation, assertion string, +) { + if am == nil || am.factory == nil { + return + } + + counter, err := am.factory.Counter(assertionFailedMetric) + if err != nil { + logAssertion(nil, fmt.Sprintf("failed to create assertion metric counter: %v", err)) + return + } + + err = counter. + WithLabels(map[string]string{ + "component": constant.SanitizeMetricLabel(component), + "operation": constant.SanitizeMetricLabel(operation), + "assertion": constant.SanitizeMetricLabel(assertion), + }). + AddOne(ctx) + if err != nil { + logAssertion(nil, fmt.Sprintf("failed to record assertion metric: %v", err)) + return + } +} + +func recordAssertionMetric(ctx context.Context, component, operation, assertion string) { + am := GetAssertionMetrics() + if am != nil { + am.RecordAssertionFailed(ctx, component, operation, assertion) + } +} + +func recordAssertionObservability( + ctx context.Context, + assertion, message string, + stack []byte, + component, operation string, +) { + recordAssertionMetric(ctx, component, operation, assertion) + recordAssertionToSpan(ctx, assertion, message, stack, component, operation) +} + +func recordAssertionToSpan( + ctx context.Context, + assertion, message string, + stack []byte, + component, operation string, +) { + span := trace.SpanFromContext(ctx) + if !span.IsRecording() { + return + } + + attrs := []attribute.KeyValue{ + attribute.String("assertion.name", assertion), + attribute.String("assertion.message", message), + } + + if component != "" { + attrs = append(attrs, attribute.String("assertion.component", component)) + } + + if operation != "" { + attrs = append(attrs, attribute.String("assertion.operation", operation)) + } + + if len(stack) > 0 { + attrs = append(attrs, attribute.String("assertion.stack", string(stack))) + } + + span.AddEvent(AssertionSpanEventName, trace.WithAttributes(attrs...)) + span.RecordError(fmt.Errorf("%w: %s", ErrAssertionFailed, message)) + span.SetStatus(codes.Error, assertionStatusMessage(component, operation)) +} + +func assertionStatusMessage(component, operation string) string { + switch { + case component != "" && operation != "": + return fmt.Sprintf("assertion failed in %s/%s", component, operation) + case component != "": + return "assertion failed in " + component + case operation != "": + return "assertion failed in " + operation + default: + return "assertion failed" + } +} diff --git a/assert/predicates.go b/assert/predicates.go new file mode 100644 index 0000000..a6e293c --- /dev/null +++ b/assert/predicates.go @@ -0,0 +1,355 @@ +package assert + +import ( + "strconv" + "strings" + "time" + + "github.com/google/uuid" + "github.com/shopspring/decimal" +) + +// Transaction status constants used by the predicates. +// These mirror the domain constants from lib-commons and are kept here to avoid +// importing non-observability packages. +const ( + txnCreated = "CREATED" + txnApproved = "APPROVED" + txnPending = "PENDING" + txnCanceled = "CANCELED" + txnNoted = "NOTED" +) + +// Positive returns true if n > 0. +// +// Example: +// +// a.That(ctx, assert.Positive(count), "count must be positive", "count", count) +func Positive(n int64) bool { + return n > 0 +} + +// NonNegative returns true if n >= 0. +// +// Example: +// +// a.That(ctx, assert.NonNegative(balance), "balance must not be negative", "balance", balance) +func NonNegative(n int64) bool { + return n >= 0 +} + +// NotZero returns true if n != 0. +// +// Example: +// +// a.That(ctx, assert.NotZero(divisor), "divisor must not be zero", "divisor", divisor) +func NotZero(n int64) bool { + return n != 0 +} + +// InRange returns true if min <= n <= max. +// +// Note: If min > max (inverted range), always returns false. This is fail-safe +// behavior - callers should ensure min <= max for correct results. +// +// Example: +// +// a.That(ctx, assert.InRange(page, 1, 1000), "page out of range", "page", page) +func InRange(n, minVal, maxVal int64) bool { + return n >= minVal && n <= maxVal +} + +// ValidUUID returns true if s is a valid UUID string. +// +// Note: Accepts both canonical (with hyphens) and non-canonical (without hyphens) +// UUID formats per RFC 4122. Empty strings return false. +// +// Example: +// +// a.That(ctx, assert.ValidUUID(id), "invalid UUID format", "id", id) +func ValidUUID(s string) bool { + if s == "" { + return false + } + + _, err := uuid.Parse(s) + + return err == nil +} + +// ValidAmount returns true if the decimal's exponent is within reasonable bounds. +// The exponent must be in the range [-18, 18] to align with supported precision +// for financial calculations (scale up to 18 decimal places). +// +// Note: This validates exponent bounds only, not coefficient size. For user-facing +// validation, consider additional bounds checks on the coefficient. +// +// Example: +// +// a.That(ctx, assert.ValidAmount(amount), "amount has invalid precision", "amount", amount) +func ValidAmount(amount decimal.Decimal) bool { + exp := amount.Exponent() + return exp >= -18 && exp <= 18 +} + +// ValidScale returns true if scale is in the range [0, 18]. +// Scale represents the number of decimal places for financial amounts. +// +// Example: +// +// a.That(ctx, assert.ValidScale(scale), "invalid scale", "scale", scale) +func ValidScale(scale int) bool { + return scale >= 0 && scale <= 18 +} + +// PositiveDecimal returns true if amount > 0. +// +// Example: +// +// a.That(ctx, assert.PositiveDecimal(price), "price must be positive", "price", price) +func PositiveDecimal(amount decimal.Decimal) bool { + return amount.IsPositive() +} + +// NonNegativeDecimal returns true if amount >= 0. +// +// Example: +// +// a.That(ctx, assert.NonNegativeDecimal(balance), "balance must not be negative", "balance", balance) +func NonNegativeDecimal(amount decimal.Decimal) bool { + return !amount.IsNegative() +} + +// ValidPort returns true if port is a valid network port number (1-65535). +// The port must be a numeric string representing a value in the valid range. +// +// Note: Port 0 is invalid for configuration purposes (it's used for dynamic allocation). +// Empty strings, non-numeric values, and out-of-range values return false. +// +// Example: +// +// a.That(ctx, assert.ValidPort(cfg.DBPort), "DB_PORT must be valid port", "port", cfg.DBPort) +func ValidPort(port string) bool { + if port == "" { + return false + } + + p, err := strconv.Atoi(port) + if err != nil { + return false + } + + return p > 0 && p <= 65535 +} + +// validSSLModes contains the valid PostgreSQL SSL modes. +// Package-level for zero-allocation lookups in ValidSSLMode. +var validSSLModes = map[string]bool{ + "": true, // Empty uses PostgreSQL default + "disable": true, + "allow": true, + "prefer": true, + "require": true, + "verify-ca": true, + "verify-full": true, +} + +// ValidSSLMode returns true if mode is a valid PostgreSQL SSL mode. +// Valid modes are: disable, allow, prefer, require, verify-ca, verify-full. +// Empty string is also valid (uses PostgreSQL default). +// +// Note: SSL modes are case-sensitive per PostgreSQL documentation. +// Unknown modes will cause connection failures. +// +// Example: +// +// a.That(ctx, assert.ValidSSLMode(cfg.DBSSLMode), "DB_SSLMODE invalid", "mode", cfg.DBSSLMode) +func ValidSSLMode(mode string) bool { + return validSSLModes[mode] +} + +// PositiveInt returns true if n > 0. +// This is the int variant of Positive (which uses int64). +// +// Example: +// +// a.That(ctx, assert.PositiveInt(cfg.MaxWorkers), "MAX_WORKERS must be positive", "value", cfg.MaxWorkers) +func PositiveInt(n int) bool { + return n > 0 +} + +// InRangeInt returns true if min <= n <= max. +// This is the int variant of InRange (which uses int64). +// +// Note: If min > max (inverted range), always returns false. This is fail-safe +// behavior - callers should ensure min <= max for correct results. +// +// Example: +// +// a.That(ctx, assert.InRangeInt(cfg.PoolSize, 1, 100), "POOL_SIZE out of range", "value", cfg.PoolSize) +func InRangeInt(n, minVal, maxVal int) bool { + return n >= minVal && n <= maxVal +} + +// DebitsEqualCredits returns true if debits and credits are exactly equal. +// This validates the fundamental double-entry accounting invariant: +// for every transaction, total debits MUST equal total credits. +// +// Note: Uses decimal.Equal() for exact comparison without floating point issues. +// Even a tiny difference indicates a bug in amount calculation. +// +// Example: +// +// a.That(ctx, assert.DebitsEqualCredits(debitTotal, creditTotal), +// "double-entry violation: debits must equal credits", +// "debits", debitTotal, "credits", creditTotal) +func DebitsEqualCredits(debits, credits decimal.Decimal) bool { + return debits.Equal(credits) +} + +// NonZeroTotals returns true if both debits and credits are non-zero. +// A transaction with zero totals is meaningless and indicates a bug. +// +// Example: +// +// a.That(ctx, assert.NonZeroTotals(debitTotal, creditTotal), +// "transaction totals must be non-zero", +// "debits", debitTotal, "credits", creditTotal) +func NonZeroTotals(debits, credits decimal.Decimal) bool { + return !debits.IsZero() && !credits.IsZero() +} + +// validTransactionStatuses contains valid transaction status values. +// Package-level for zero-allocation lookups. +var validTransactionStatuses = map[string]bool{ + txnCreated: true, + txnApproved: true, + txnPending: true, + txnCanceled: true, + txnNoted: true, +} + +// ValidTransactionStatus returns true if status is a valid transaction status. +// Valid statuses are: CREATED, APPROVED, PENDING, CANCELED, NOTED. +// +// Note: Statuses are case-sensitive and must match exactly. +// +// Example: +// +// a.That(ctx, assert.ValidTransactionStatus(tran.Status.Code), +// "invalid transaction status", +// "status", tran.Status.Code) +func ValidTransactionStatus(status string) bool { + return validTransactionStatuses[status] +} + +// validTransitions defines the allowed state machine transitions. +// Key: current state, Value: set of valid target states. +// Only PENDING transactions can be committed (APPROVED) or canceled (CANCELED). +var validTransitions = map[string]map[string]bool{ + txnPending: { + txnApproved: true, + txnCanceled: true, + }, + // CREATED, APPROVED, CANCELED, NOTED are terminal states - no forward transitions +} + +// TransactionCanTransitionTo returns true if transitioning from current to target is valid. +// The transaction state machine only allows: PENDING -> APPROVED or PENDING -> CANCELED. +// +// Note: This is for forward transitions only. Revert is a separate operation. +// +// Example: +// +// a.That(ctx, assert.TransactionCanTransitionTo(current, next), +// "invalid status transition", +// "current", current, +// "next", next) +func TransactionCanTransitionTo(current, target string) bool { + validTargets, exists := validTransitions[current] + if !exists { + return false + } + + return validTargets[target] +} + +// TransactionCanBeReverted returns true if a transaction can be reverted. +// The transaction can only be reverted if: +// - Status is APPROVED +// - It has no parent transaction (i.e., it is not a reversal of another transaction) +// +// This ensures only original transactions can be reverted, not reversals. +func TransactionCanBeReverted(status string, hasParent bool) bool { + if status != txnApproved { + return false + } + + return !hasParent +} + +// BalanceSufficientForRelease returns true if the available on-hold balance +// is sufficient to release the specified amount. +func BalanceSufficientForRelease(onHold, releaseAmount decimal.Decimal) bool { + if onHold.IsNegative() || releaseAmount.IsNegative() { + return false + } + + return onHold.GreaterThanOrEqual(releaseAmount) +} + +// DateNotInFuture returns true if the date is not in the future (i.e., <= now). +// Zero time is considered valid (returns true). +func DateNotInFuture(date time.Time) bool { + if date.IsZero() { + return true + } + + return !date.After(time.Now().UTC()) +} + +// DateAfter returns true if date is strictly after reference time. +func DateAfter(date, reference time.Time) bool { + return date.After(reference) +} + +// BalanceIsZero returns true if both available and onHold balances are exactly zero. +func BalanceIsZero(available, onHold decimal.Decimal) bool { + return available.IsZero() && onHold.IsZero() +} + +// TransactionHasOperations returns true if the transaction has operations. +func TransactionHasOperations(operations []string) bool { + return len(operations) > 0 +} + +// TransactionOperationsContain returns true if every element in operations is +// contained in the allowed set (i.e. operations is a subset of allowed). +// Both empty operations and empty allowed return false. +func TransactionOperationsContain(operations, allowed []string) bool { + if len(operations) == 0 || len(allowed) == 0 { + return false + } + + allowedSet := make(map[string]struct{}, len(allowed)) + for _, op := range allowed { + allowedSet[strings.TrimSpace(op)] = struct{}{} + } + + for _, op := range operations { + if _, ok := allowedSet[strings.TrimSpace(op)]; !ok { + return false + } + } + + return true +} + +// TransactionOperationsMatch is a deprecated alias for TransactionOperationsContain. +// It checks subset containment: every operation must be in the allowed set. +// +// Deprecated: Use TransactionOperationsContain instead. The name "Match" implied +// full bidirectional equality, but the behavior is subset containment. +func TransactionOperationsMatch(operations, allowed []string) bool { + return TransactionOperationsContain(operations, allowed) +} diff --git a/constants/headers.go b/constants/headers.go new file mode 100644 index 0000000..338ff75 --- /dev/null +++ b/constants/headers.go @@ -0,0 +1,10 @@ +package constants + +const ( + // HeaderTraceparent is the W3C traceparent header key. + HeaderTraceparent = "Traceparent" + // HeaderTraceparentPascal is the PascalCase variant of the Traceparent header for gRPC metadata. + HeaderTraceparentPascal = "Traceparent" + // HeaderTracestatePascal is the PascalCase variant of the Tracestate header for gRPC metadata. + HeaderTracestatePascal = "Tracestate" +) diff --git a/constants/log.go b/constants/log.go new file mode 100644 index 0000000..46022a4 --- /dev/null +++ b/constants/log.go @@ -0,0 +1,4 @@ +package constants + +// LoggerDefaultSeparator is the default delimiter used in composed log messages. +const LoggerDefaultSeparator = " | " diff --git a/constants/metadata.go b/constants/metadata.go new file mode 100644 index 0000000..60e1f04 --- /dev/null +++ b/constants/metadata.go @@ -0,0 +1,8 @@ +package constants + +const ( + // MetadataTraceparent is the metadata key for W3C traceparent. + MetadataTraceparent = "traceparent" + // MetadataTracestate is the metadata key for W3C tracestate. + MetadataTracestate = "tracestate" +) diff --git a/constants/obfuscation.go b/constants/obfuscation.go new file mode 100644 index 0000000..8ed00fa --- /dev/null +++ b/constants/obfuscation.go @@ -0,0 +1,6 @@ +package constants + +const ( + // ObfuscatedValue is the default value used to replace sensitive fields + ObfuscatedValue = "********" +) diff --git a/constants/opentelemetry.go b/constants/opentelemetry.go new file mode 100644 index 0000000..3c33d3c --- /dev/null +++ b/constants/opentelemetry.go @@ -0,0 +1,73 @@ +package constants + +// TelemetrySDKName identifies this library in OTEL telemetry resource attributes. +const TelemetrySDKName = "lib-observability/tracing" + +// MaxMetricLabelLength is the maximum length for metric labels to prevent cardinality explosion. +// Used by assert, runtime, and circuitbreaker packages for label sanitization. +const MaxMetricLabelLength = 64 + +// Telemetry attribute key prefixes. +const ( + // AttrPrefixAppRequest is the prefix for application request attributes. + AttrPrefixAppRequest = "app.request." + // AttrPrefixAssertion is the prefix for assertion event attributes. + AttrPrefixAssertion = "assertion." + // AttrPrefixPanic is the prefix for panic event attributes. + AttrPrefixPanic = "panic." +) + +// Telemetry attribute keys for database connectors. +const ( + // AttrDBSystem is the OTEL semantic convention attribute key for the database system name. + AttrDBSystem = "db.system" + // AttrDBName is the OTEL semantic convention attribute key for the database name. + AttrDBName = "db.name" + // AttrDBMongoDBCollection is the OTEL semantic convention attribute key for the MongoDB collection. + AttrDBMongoDBCollection = "db.mongodb.collection" +) + +// Database system identifiers used as values for AttrDBSystem. +const ( + // DBSystemPostgreSQL is the OTEL semantic convention value for PostgreSQL. + DBSystemPostgreSQL = "postgresql" + // DBSystemMongoDB is the OTEL semantic convention value for MongoDB. + DBSystemMongoDB = "mongodb" + // DBSystemRedis is the OTEL semantic convention value for Redis. + DBSystemRedis = "redis" + // DBSystemRabbitMQ is the OTEL semantic convention value for RabbitMQ. + DBSystemRabbitMQ = "rabbitmq" +) + +// Telemetry metric names. +const ( + // MetricPanicRecoveredTotal is the counter metric for recovered panics. + MetricPanicRecoveredTotal = "panic_recovered_total" + // MetricAssertionFailedTotal is the counter metric for failed assertions. + MetricAssertionFailedTotal = "assertion_failed_total" +) + +// Telemetry event names. +const ( + // EventAssertionFailed is the span event name for assertion failures. + EventAssertionFailed = "assertion.failed" + // EventPanicRecovered is the span event name for recovered panics. + EventPanicRecovered = "panic.recovered" +) + +// SanitizeMetricLabel truncates a label value to MaxMetricLabelLength runes +// to prevent metric cardinality explosion in OTEL backends. +// Truncation is rune-aware to avoid splitting multibyte UTF-8 characters. +func SanitizeMetricLabel(value string) string { + if len(value) <= MaxMetricLabelLength { + // Fast path: if byte length is within limit, rune length is too. + return value + } + + runes := []rune(value) + if len(runes) > MaxMetricLabelLength { + return string(runes[:MaxMetricLabelLength]) + } + + return value +} diff --git a/log/go_logger.go b/log/go_logger.go new file mode 100644 index 0000000..faf1f49 --- /dev/null +++ b/log/go_logger.go @@ -0,0 +1,212 @@ +package log + +import ( + "context" + "fmt" + "log" + "reflect" + "strings" + + "github.com/LerianStudio/lib-observability/redaction" +) + +var logControlCharReplacer = strings.NewReplacer( + "\n", `\n`, + "\r", `\r`, + "\t", `\t`, + "\x00", `\0`, +) + +func sanitizeLogString(s string) string { + return logControlCharReplacer.Replace(s) +} + +// GoLogger is the stdlib logger implementation for Logger. +type GoLogger struct { + Level Level + fields []Field + groups []string +} + +// Enabled reports whether the logger emits entries at the given level. +// On a nil receiver, Enabled returns false silently. Use NopLogger as the +// documented nil-safe alternative. +// +// Unknown level policy: levels outside the defined range (LevelError..LevelDebug) +// are treated as suppressed by GoLogger (since their numeric value exceeds any +// configured threshold). The zap adapter maps unknown levels to Info. The net +// effect is: unknown levels produce Info-level output if a zap backend is used, +// or are suppressed in the stdlib GoLogger. Callers should use only the defined +// Level constants. +func (l *GoLogger) Enabled(level Level) bool { + if l == nil { + return false + } + + return l.Level >= level +} + +// Log writes a single log line if the level is enabled. +func (l *GoLogger) Log(_ context.Context, level Level, msg string, fields ...Field) { + if !l.Enabled(level) { + return + } + + line := l.hydrateLine(level, msg, fields...) + log.Print(line) +} + +// With returns a child logger with additional persistent fields. +// +//nolint:ireturn +func (l *GoLogger) With(fields ...Field) Logger { + if l == nil { + return &NopLogger{} + } + + newFields := make([]Field, 0, len(l.fields)+len(fields)) + newFields = append(newFields, l.fields...) + newFields = append(newFields, fields...) + + newGroups := make([]string, 0, len(l.groups)) + newGroups = append(newGroups, l.groups...) + + return &GoLogger{ + Level: l.Level, + fields: newFields, + groups: newGroups, + } +} + +// WithGroup returns a child logger scoped under the provided group name. +// Empty or whitespace-only names are silently ignored, consistent with +// the zap adapter. This avoids creating unnecessary allocations. +// +//nolint:ireturn +func (l *GoLogger) WithGroup(name string) Logger { + if l == nil { + return &NopLogger{} + } + + if strings.TrimSpace(name) == "" { + return l + } + + newGroups := make([]string, 0, len(l.groups)+1) + newGroups = append(newGroups, l.groups...) + newGroups = append(newGroups, sanitizeLogString(name)) + + newFields := make([]Field, 0, len(l.fields)) + newFields = append(newFields, l.fields...) + + return &GoLogger{ + Level: l.Level, + fields: newFields, + groups: newGroups, + } +} + +// Sync flushes buffered logs. It is a no-op for the stdlib logger. +func (l *GoLogger) Sync(_ context.Context) error { return nil } + +func (l *GoLogger) hydrateLine(level Level, msg string, fields ...Field) string { + parts := make([]string, 0, 4) + parts = append(parts, fmt.Sprintf("[%s]", level.String())) + + if l != nil && len(l.groups) > 0 { + parts = append(parts, fmt.Sprintf("[group=%s]", strings.Join(l.groups, "."))) + } + + allFields := make([]Field, 0, len(fields)) + if l != nil { + allFields = append(allFields, l.fields...) + } + + allFields = append(allFields, fields...) + + if rendered := renderFields(allFields); rendered != "" { + parts = append(parts, rendered) + } + + parts = append(parts, sanitizeLogString(msg)) + + return strings.Join(parts, " ") +} + +// redactedValue is the placeholder used for sensitive field values in log output. +const redactedValue = "[REDACTED]" + +func renderFields(fields []Field) string { + if len(fields) == 0 { + return "" + } + + parts := make([]string, 0, len(fields)) + for _, field := range fields { + key := sanitizeLogString(field.Key) + if key == "" { + continue + } + + var rendered any + if redaction.IsSensitiveField(field.Key) { + rendered = redactedValue + } else { + rendered = sanitizeFieldValue(field.Value) + } + + parts = append(parts, fmt.Sprintf("%s=%v", key, rendered)) + } + + if len(parts) == 0 { + return "" + } + + return fmt.Sprintf("[%s]", strings.Join(parts, ", ")) +} + +// isTypedNil reports whether v is a non-nil interface wrapping a nil pointer. +// This prevents panics when calling methods (Error, String) on typed-nil values. +func isTypedNil(v any) bool { + if v == nil { + return false + } + + rv := reflect.ValueOf(v) + + switch rv.Kind() { + case reflect.Ptr, reflect.Interface, reflect.Func, reflect.Map, reflect.Slice, reflect.Chan: + return rv.IsNil() + default: + return false + } +} + +func sanitizeFieldValue(value any) any { + if value == nil { + return nil + } + + // Guard against typed-nil before calling interface methods. + if isTypedNil(value) { + return "" + } + + switch v := value.(type) { + case string: + return sanitizeLogString(v) + case error: + return sanitizeLogString(v.Error()) + case fmt.Stringer: + return sanitizeLogString(v.String()) + case bool, int, int8, int16, int32, int64, + uint, uint8, uint16, uint32, uint64, + float32, float64: + // Primitive types cannot carry newlines; pass through unchanged. + return value + default: + // Composite types (structs, slices, maps, etc.) may carry raw newlines + // when rendered with fmt. Pre-serialize and sanitize the result. + return sanitizeLogString(fmt.Sprintf("%v", v)) + } +} diff --git a/log/log.go b/log/log.go new file mode 100644 index 0000000..bd3e6c3 --- /dev/null +++ b/log/log.go @@ -0,0 +1,116 @@ +package log + +import ( + "context" + "fmt" + "strings" +) + +// Logger is the package interface for v2 logging. +// +//go:generate mockgen --destination=log_mock.go --package=log . Logger +type Logger interface { + Log(ctx context.Context, level Level, msg string, fields ...Field) + With(fields ...Field) Logger + WithGroup(name string) Logger + Enabled(level Level) bool + Sync(ctx context.Context) error +} + +// Level represents the severity of a log entry. +// +// Lower numeric values indicate higher severity (LevelError=0 is most severe, +// LevelDebug=3 is least). This is inverted from slog/zap conventions where +// higher numeric values mean higher severity. +// +// The GoLogger.Enabled comparison uses l.Level >= level, which works because +// the logger's Level acts as a verbosity ceiling: a logger at LevelInfo (2) +// emits Error (0), Warn (1), and Info (2) messages, but suppresses Debug (3). +type Level uint8 + +// Level constants define log severity. Lower numeric values indicate higher +// severity. Setting a logger's Level to a given constant enables that level +// and all levels with lower numeric values (i.e., higher severity). +// +// LevelError (0) -- only errors +// LevelWarn (1) -- errors + warnings +// LevelInfo (2) -- errors + warnings + info +// LevelDebug (3) -- everything +const ( + LevelError Level = iota + LevelWarn + LevelInfo + LevelDebug +) + +// LevelUnknown represents an invalid or unrecognized log level. +// Returned by ParseLevel on error to distinguish from LevelError (the zero value). +const LevelUnknown Level = 255 + +// String returns the string representation of a log level. +func (level Level) String() string { + switch level { + case LevelDebug: + return "debug" + case LevelInfo: + return "info" + case LevelWarn: + return "warn" + case LevelError: + return "error" + default: + return "unknown" + } +} + +// ParseLevel takes a string level and returns a Level constant. +// Leading and trailing whitespace is trimmed before matching. +func ParseLevel(lvl string) (Level, error) { + switch strings.ToLower(strings.TrimSpace(lvl)) { + case "debug": + return LevelDebug, nil + case "info": + return LevelInfo, nil + case "warn", "warning": + return LevelWarn, nil + case "error": + return LevelError, nil + } + + return LevelUnknown, fmt.Errorf("not a valid Level: %q", lvl) +} + +// Field is a strongly-typed key/value attribute attached to a log event. +type Field struct { + Key string + Value any +} + +// Any creates a field with an arbitrary value. +// +// WARNING: prefer typed constructors (String, Int, Bool, Err) to avoid +// accidentally logging sensitive data (passwords, tokens, PII). If using +// Any, ensure the value is sanitized or non-sensitive. +func Any(key string, value any) Field { + return Field{Key: key, Value: value} +} + +// String creates a string field. +func String(key, value string) Field { + return Field{Key: key, Value: value} +} + +// Int creates an integer field. +func Int(key string, value int) Field { + return Field{Key: key, Value: value} +} + +// Bool creates a boolean field. +func Bool(key string, value bool) Field { + return Field{Key: key, Value: value} +} + +// Err creates the conventional `error` field. +func Err(err error) Field { + return Field{Key: "error", Value: err} +} diff --git a/log/nil.go b/log/nil.go new file mode 100644 index 0000000..c6ab551 --- /dev/null +++ b/log/nil.go @@ -0,0 +1,36 @@ +package log + +import "context" + +// NopLogger is a no-op logger implementation. +type NopLogger struct{} + +// NewNop creates a no-op logger implementation. +func NewNop() Logger { + return &NopLogger{} +} + +// Log drops all log events. +func (l *NopLogger) Log(_ context.Context, _ Level, _ string, _ ...Field) {} + +// With returns the same no-op logger. +// +//nolint:ireturn +func (l *NopLogger) With(_ ...Field) Logger { + return l +} + +// WithGroup returns the same no-op logger. +// +//nolint:ireturn +func (l *NopLogger) WithGroup(_ string) Logger { + return l +} + +// Enabled always returns false for NopLogger. +func (l *NopLogger) Enabled(_ Level) bool { + return false +} + +// Sync is a no-op and always returns nil. +func (l *NopLogger) Sync(_ context.Context) error { return nil } diff --git a/log/sanitizer.go b/log/sanitizer.go new file mode 100644 index 0000000..0c70250 --- /dev/null +++ b/log/sanitizer.go @@ -0,0 +1,41 @@ +package log + +import ( + "context" + "fmt" +) + +// SafeError logs errors with explicit production-aware sanitization. +// When production is true, only the error type is logged (no message details). +// +// Design rationale: the production boolean is caller-supplied rather than +// derived from a global flag. This keeps the log package free of global state +// and lets the caller (typically a service boundary) decide the sanitization +// policy based on its own configuration. Callers in production deployments +// should pass true to prevent leaking sensitive error details into log output. +func SafeError(logger Logger, ctx context.Context, msg string, err error, production bool) { + if logger == nil { + return + } + + if err == nil { + return + } + + if !logger.Enabled(LevelError) { + return + } + + if production { + logger.Log(ctx, LevelError, msg, String("error_type", fmt.Sprintf("%T", err))) + return + } + + logger.Log(ctx, LevelError, msg, Err(err)) +} + +// SanitizeExternalResponse removes potentially sensitive external response data. +// Returns only status code for error messages. +func SanitizeExternalResponse(statusCode int) string { + return fmt.Sprintf("external system returned status %d", statusCode) +} diff --git a/metrics/account.go b/metrics/account.go new file mode 100644 index 0000000..3a2bbf3 --- /dev/null +++ b/metrics/account.go @@ -0,0 +1,21 @@ +package metrics + +import ( + "context" + + "go.opentelemetry.io/otel/attribute" +) + +// RecordAccountCreated increments the account-created counter. +func (f *MetricsFactory) RecordAccountCreated(ctx context.Context, attributes ...attribute.KeyValue) error { + if f == nil { + return ErrNilFactory + } + + b, err := f.Counter(MetricAccountsCreated) + if err != nil { + return err + } + + return b.WithAttributes(attributes...).AddOne(ctx) +} diff --git a/metrics/builders.go b/metrics/builders.go new file mode 100644 index 0000000..e865000 --- /dev/null +++ b/metrics/builders.go @@ -0,0 +1,243 @@ +package metrics + +import ( + "context" + "errors" + + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/metric" +) + +var ( + // ErrNilCounter is returned when a counter builder has no instrument. + ErrNilCounter = errors.New("counter instrument is nil") + // ErrNilGauge is returned when a gauge builder has no instrument. + ErrNilGauge = errors.New("gauge instrument is nil") + // ErrNilHistogram is returned when a histogram builder has no instrument. + ErrNilHistogram = errors.New("histogram instrument is nil") + // ErrNilCounterBuilder is returned when a CounterBuilder method is called on a nil receiver. + ErrNilCounterBuilder = errors.New("counter builder is nil") + // ErrNilGaugeBuilder is returned when a GaugeBuilder method is called on a nil receiver. + ErrNilGaugeBuilder = errors.New("gauge builder is nil") + // ErrNilHistogramBuilder is returned when a HistogramBuilder method is called on a nil receiver. + ErrNilHistogramBuilder = errors.New("histogram builder is nil") +) + +// CounterBuilder provides a fluent API for recording counter metrics with optional labels +type CounterBuilder struct { + factory *MetricsFactory + counter metric.Int64Counter + name string + attrs []attribute.KeyValue +} + +// WithLabels adds labels/attributes to the counter metric. +// Returns a nil-safe builder if the receiver is nil. +func (c *CounterBuilder) WithLabels(labels map[string]string) *CounterBuilder { + if c == nil { + return nil + } + + builder := &CounterBuilder{ + factory: c.factory, + counter: c.counter, + name: c.name, + attrs: make([]attribute.KeyValue, 0, len(c.attrs)+len(labels)), + } + + builder.attrs = append(builder.attrs, c.attrs...) + + for key, value := range labels { + builder.attrs = append(builder.attrs, attribute.String(key, value)) + } + + return builder +} + +// WithAttributes adds OpenTelemetry attributes to the counter metric. +// Returns a nil-safe builder if the receiver is nil. +func (c *CounterBuilder) WithAttributes(attrs ...attribute.KeyValue) *CounterBuilder { + if c == nil { + return nil + } + + builder := &CounterBuilder{ + factory: c.factory, + counter: c.counter, + name: c.name, + attrs: make([]attribute.KeyValue, 0, len(c.attrs)+len(attrs)), + } + + builder.attrs = append(builder.attrs, c.attrs...) + + builder.attrs = append(builder.attrs, attrs...) + + return builder +} + +// Add records a counter increment. +// Returns an error if the value is negative (counters are monotonically increasing). +func (c *CounterBuilder) Add(ctx context.Context, value int64) error { + if c == nil { + return ErrNilCounterBuilder + } + + if c.counter == nil { + return ErrNilCounter + } + + if value < 0 { + return ErrNegativeCounterValue + } + + c.counter.Add(ctx, value, metric.WithAttributes(c.attrs...)) + + return nil +} + +// AddOne increments the counter by one. +func (c *CounterBuilder) AddOne(ctx context.Context) error { + if c == nil { + return ErrNilCounterBuilder + } + + return c.Add(ctx, 1) +} + +// GaugeBuilder provides a fluent API for recording gauge metrics with optional labels +type GaugeBuilder struct { + factory *MetricsFactory + gauge metric.Int64Gauge + name string + attrs []attribute.KeyValue +} + +// WithLabels adds labels/attributes to the gauge metric. +// Returns a nil-safe builder if the receiver is nil. +func (g *GaugeBuilder) WithLabels(labels map[string]string) *GaugeBuilder { + if g == nil { + return nil + } + + builder := &GaugeBuilder{ + factory: g.factory, + gauge: g.gauge, + name: g.name, + attrs: make([]attribute.KeyValue, 0, len(g.attrs)+len(labels)), + } + + builder.attrs = append(builder.attrs, g.attrs...) + + for key, value := range labels { + builder.attrs = append(builder.attrs, attribute.String(key, value)) + } + + return builder +} + +// WithAttributes adds OpenTelemetry attributes to the gauge metric. +// Returns a nil-safe builder if the receiver is nil. +func (g *GaugeBuilder) WithAttributes(attrs ...attribute.KeyValue) *GaugeBuilder { + if g == nil { + return nil + } + + builder := &GaugeBuilder{ + factory: g.factory, + gauge: g.gauge, + name: g.name, + attrs: make([]attribute.KeyValue, 0, len(g.attrs)+len(attrs)), + } + + builder.attrs = append(builder.attrs, g.attrs...) + + builder.attrs = append(builder.attrs, attrs...) + + return builder +} + +// Set sets the current value of a gauge (recommended for application code). +// +// This is the primary implementation for recording gauge values and is +// idiomatic for instantaneous state (e.g., queue length, in-flight operations). +// It uses only the builder attributes to avoid high-cardinality labels. +func (g *GaugeBuilder) Set(ctx context.Context, value int64) error { + if g == nil { + return ErrNilGaugeBuilder + } + + if g.gauge == nil { + return ErrNilGauge + } + + g.gauge.Record(ctx, value, metric.WithAttributes(g.attrs...)) + + return nil +} + +// HistogramBuilder provides a fluent API for recording histogram metrics with optional labels +type HistogramBuilder struct { + factory *MetricsFactory + histogram metric.Int64Histogram + name string + attrs []attribute.KeyValue +} + +// WithLabels adds labels/attributes to the histogram metric. +// Returns a nil-safe builder if the receiver is nil. +func (h *HistogramBuilder) WithLabels(labels map[string]string) *HistogramBuilder { + if h == nil { + return nil + } + + builder := &HistogramBuilder{ + factory: h.factory, + histogram: h.histogram, + name: h.name, + attrs: make([]attribute.KeyValue, 0, len(h.attrs)+len(labels)), + } + + builder.attrs = append(builder.attrs, h.attrs...) + + for key, value := range labels { + builder.attrs = append(builder.attrs, attribute.String(key, value)) + } + + return builder +} + +// WithAttributes adds OpenTelemetry attributes to the histogram metric. +// Returns a nil-safe builder if the receiver is nil. +func (h *HistogramBuilder) WithAttributes(attrs ...attribute.KeyValue) *HistogramBuilder { + if h == nil { + return nil + } + + builder := &HistogramBuilder{ + factory: h.factory, + histogram: h.histogram, + name: h.name, + attrs: make([]attribute.KeyValue, 0, len(h.attrs)+len(attrs)), + } + + builder.attrs = append(builder.attrs, h.attrs...) + + builder.attrs = append(builder.attrs, attrs...) + + return builder +} + +// Record records a histogram value +func (h *HistogramBuilder) Record(ctx context.Context, value int64) error { + if h == nil { + return ErrNilHistogramBuilder + } + + if h.histogram == nil { + return ErrNilHistogram + } + + h.histogram.Record(ctx, value, metric.WithAttributes(h.attrs...)) + + return nil +} diff --git a/metrics/metrics.go b/metrics/metrics.go new file mode 100644 index 0000000..44abc0e --- /dev/null +++ b/metrics/metrics.go @@ -0,0 +1,388 @@ +package metrics + +import ( + "context" + "errors" + "fmt" + "sort" + "strconv" + "strings" + "sync" + + "github.com/LerianStudio/lib-observability/log" + "go.opentelemetry.io/otel/metric" + "go.opentelemetry.io/otel/metric/noop" +) + +// MetricsFactory provides a thread-safe factory for creating and managing OpenTelemetry metrics +// with lazy initialization using sync.Map for high-performance concurrent access. +type MetricsFactory struct { + meter metric.Meter + counters sync.Map // string -> metric.Int64Counter + gauges sync.Map // string -> metric.Int64Gauge + histograms sync.Map // string -> metric.Int64Histogram + logger log.Logger +} + +var ( + // ErrNilMeter indicates that a nil OTEL meter was provided. + ErrNilMeter = errors.New("metric meter cannot be nil") + // ErrNilFactory is returned when a MetricsFactory method is called on a nil receiver. + ErrNilFactory = errors.New("metrics factory is nil") + // ErrNegativeCounterValue is returned when a negative value is passed to Counter.Add. + ErrNegativeCounterValue = errors.New("counter value must not be negative") + // ErrPercentageOutOfRange is returned when a percentage value is outside [0, 100]. + ErrPercentageOutOfRange = errors.New("percentage value must be between 0 and 100") +) + +// Metric represents a metric that can be collected by the server. +type Metric struct { + Name string + Description string + Unit string + // For histograms: bucket boundaries + Buckets []float64 +} + +// Pre-configured metrics that can be used to create metrics with default options. +var ( + // MetricAccountsCreated is a metric that measures the number of accounts created by the server. + MetricAccountsCreated = Metric{ + Name: "accounts_created", + Unit: "1", + Description: "Measures the number of accounts created by the server.", + } + + // MetricTransactionsProcessed is a metric that measures the number of transactions processed by the server. + MetricTransactionsProcessed = Metric{ + Name: "transactions_processed", + Unit: "1", + Description: "Measures the number of transactions processed by the server.", + } + + // MetricTransactionRoutesCreated is a metric that measures the number of transaction routes created by the server. + MetricTransactionRoutesCreated = Metric{ + Name: "transaction_routes_created", + Unit: "1", + Description: "Measures the number of transaction routes created by the server.", + } + + // MetricOperationRoutesCreated is a metric that measures the number of operation routes created by the server. + MetricOperationRoutesCreated = Metric{ + Name: "operation_routes_created", + Unit: "1", + Description: "Measures the number of operation routes created by the server.", + } +) + +// Default histogram bucket configurations for different metric types. +// Values are in seconds for consistency with OpenTelemetry conventions. +var ( + // DefaultLatencyBuckets for latency measurements (in seconds) + DefaultLatencyBuckets = []float64{0.001, 0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10} + + // DefaultAccountBuckets for account creation counts + DefaultAccountBuckets = []float64{1, 5, 10, 25, 50, 100, 250, 500, 1000, 2500, 5000} + + // DefaultTransactionBuckets for transaction count per time period + DefaultTransactionBuckets = []float64{1, 10, 50, 100, 500, 1000, 2500, 5000, 8000, 10000} +) + +// NewMetricsFactory creates a new MetricsFactory instance. +func NewMetricsFactory(meter metric.Meter, logger log.Logger) (*MetricsFactory, error) { + if meter == nil { + return nil, ErrNilMeter + } + + return &MetricsFactory{ + meter: meter, + logger: logger, + }, nil +} + +// NewNopFactory returns a MetricsFactory backed by OpenTelemetry's no-op meter. +// It is safe for use as a fallback when a real meter is unavailable. +func NewNopFactory() *MetricsFactory { + return &MetricsFactory{ + meter: noop.NewMeterProvider().Meter("nop"), + logger: log.NewNop(), + } +} + +// Counter creates or retrieves a counter metric and returns a builder for fluent API usage +func (f *MetricsFactory) Counter(m Metric) (*CounterBuilder, error) { + if f == nil { + return nil, ErrNilFactory + } + + counter, err := f.getOrCreateCounter(m) + if err != nil { + return nil, err + } + + return &CounterBuilder{ + factory: f, + counter: counter, + name: m.Name, + }, nil +} + +// Gauge creates or retrieves a gauge metric and returns a builder for fluent API usage +func (f *MetricsFactory) Gauge(m Metric) (*GaugeBuilder, error) { + if f == nil { + return nil, ErrNilFactory + } + + gauge, err := f.getOrCreateGauge(m) + if err != nil { + return nil, err + } + + return &GaugeBuilder{ + factory: f, + gauge: gauge, + name: m.Name, + }, nil +} + +// Histogram creates or retrieves a histogram metric and returns a builder for fluent API usage +func (f *MetricsFactory) Histogram(m Metric) (*HistogramBuilder, error) { + if f == nil { + return nil, ErrNilFactory + } + + // Set default buckets if not provided + if m.Buckets == nil { + m.Buckets = selectDefaultBuckets(m.Name) + } + + histogram, err := f.getOrCreateHistogram(m) + if err != nil { + return nil, err + } + + return &HistogramBuilder{ + factory: f, + histogram: histogram, + name: m.Name, + }, nil +} + +// selectDefaultBuckets chooses default buckets based on metric name. +// Uses exact match first, then checks for substrings in a deterministic order. +func selectDefaultBuckets(name string) []float64 { + nameL := strings.ToLower(name) + + // Check substrings in deterministic priority order. + // Latency/duration/time patterns first to avoid "transaction_latency" + // matching "transaction" instead of "latency". + patterns := []struct { + substr string + buckets []float64 + }{ + {"latency", DefaultLatencyBuckets}, + {"duration", DefaultLatencyBuckets}, + {"time", DefaultLatencyBuckets}, + {"account", DefaultAccountBuckets}, + {"transaction", DefaultTransactionBuckets}, + } + + for _, p := range patterns { + if strings.Contains(nameL, p.substr) { + return p.buckets + } + } + + return DefaultLatencyBuckets +} + +// getOrCreateCounter lazily creates or retrieves an existing counter +func (f *MetricsFactory) getOrCreateCounter(m Metric) (metric.Int64Counter, error) { + if f == nil { + return nil, ErrNilFactory + } + + if counter, exists := f.counters.Load(m.Name); exists { + if c, ok := counter.(metric.Int64Counter); ok { + return c, nil + } + + return nil, fmt.Errorf("counter cache contains invalid type for %q", m.Name) + } + + // Create new counter with proper options + counterOpts := f.addCounterOptions(m) + + counter, err := f.meter.Int64Counter(m.Name, counterOpts...) + if err != nil { + if f.logger != nil { + f.logger.Log(context.Background(), log.LevelError, "failed to create counter metric", log.String("metric_name", m.Name), log.Err(err)) + } + + return nil, fmt.Errorf("create counter %q: %w", m.Name, err) + } + + // Store in sync.Map for future use + if actual, loaded := f.counters.LoadOrStore(m.Name, counter); loaded { + // Another goroutine created it first, use that one + if c, ok := actual.(metric.Int64Counter); ok { + return c, nil + } + + return nil, fmt.Errorf("counter cache contains invalid type for %q", m.Name) + } + + return counter, nil +} + +// getOrCreateGauge lazily creates or retrieves an existing gauge +func (f *MetricsFactory) getOrCreateGauge(m Metric) (metric.Int64Gauge, error) { + if f == nil { + return nil, ErrNilFactory + } + + if gauge, exists := f.gauges.Load(m.Name); exists { + if g, ok := gauge.(metric.Int64Gauge); ok { + return g, nil + } + + return nil, fmt.Errorf("gauge cache contains invalid type for %q", m.Name) + } + + // Create new gauge with proper options + gaugeOpts := f.addGaugeOptions(m) + + gauge, err := f.meter.Int64Gauge(m.Name, gaugeOpts...) + if err != nil { + if f.logger != nil { + f.logger.Log(context.Background(), log.LevelError, "failed to create gauge metric", log.String("metric_name", m.Name), log.Err(err)) + } + + return nil, fmt.Errorf("create gauge %q: %w", m.Name, err) + } + + // Store in sync.Map for future use + if actual, loaded := f.gauges.LoadOrStore(m.Name, gauge); loaded { + // Another goroutine created it first, use that one + if g, ok := actual.(metric.Int64Gauge); ok { + return g, nil + } + + return nil, fmt.Errorf("gauge cache contains invalid type for %q", m.Name) + } + + return gauge, nil +} + +// getOrCreateHistogram lazily creates or retrieves an existing histogram. +// Uses a composite key (name + buckets hash) to ensure different bucket configs +// result in different histograms. +func (f *MetricsFactory) getOrCreateHistogram(m Metric) (metric.Int64Histogram, error) { + if f == nil { + return nil, ErrNilFactory + } + + // Sort buckets before both cache key computation and instrument creation + // to ensure the instrument configuration matches the cache key. + if len(m.Buckets) > 1 { + sorted := make([]float64, len(m.Buckets)) + copy(sorted, m.Buckets) + sort.Float64s(sorted) + m.Buckets = sorted + } + + cacheKey := histogramCacheKey(m.Name, m.Buckets) + + if histogram, exists := f.histograms.Load(cacheKey); exists { + if h, ok := histogram.(metric.Int64Histogram); ok { + return h, nil + } + + return nil, fmt.Errorf("histogram cache contains invalid type for %q", cacheKey) + } + + // Create new histogram with proper options + histogramOpts := f.addHistogramOptions(m) + + histogram, err := f.meter.Int64Histogram(m.Name, histogramOpts...) + if err != nil { + if f.logger != nil { + f.logger.Log(context.Background(), log.LevelError, "failed to create histogram metric", log.String("metric_name", m.Name), log.Err(err)) + } + + return nil, fmt.Errorf("create histogram %q: %w", m.Name, err) + } + + // Store in sync.Map for future use + if actual, loaded := f.histograms.LoadOrStore(cacheKey, histogram); loaded { + // Another goroutine created it first, use that one + if h, ok := actual.(metric.Int64Histogram); ok { + return h, nil + } + + return nil, fmt.Errorf("histogram cache contains invalid type for %q", cacheKey) + } + + return histogram, nil +} + +// histogramCacheKey generates a unique cache key based on name and bucket configuration. +func histogramCacheKey(name string, buckets []float64) string { + if len(buckets) == 0 { + return name + } + + sortedBuckets := make([]float64, len(buckets)) + copy(sortedBuckets, buckets) + sort.Float64s(sortedBuckets) + + bucketStrings := make([]string, len(sortedBuckets)) + for i, b := range sortedBuckets { + bucketStrings[i] = strconv.FormatFloat(b, 'g', -1, 64) + } + + return fmt.Sprintf("%s:%s", name, strings.Join(bucketStrings, ",")) +} + +func (f *MetricsFactory) addCounterOptions(m Metric) []metric.Int64CounterOption { + var opts []metric.Int64CounterOption + if m.Description != "" { + opts = append(opts, metric.WithDescription(m.Description)) + } + + if m.Unit != "" { + opts = append(opts, metric.WithUnit(m.Unit)) + } + + return opts +} + +func (f *MetricsFactory) addGaugeOptions(m Metric) []metric.Int64GaugeOption { + var opts []metric.Int64GaugeOption + if m.Description != "" { + opts = append(opts, metric.WithDescription(m.Description)) + } + + if m.Unit != "" { + opts = append(opts, metric.WithUnit(m.Unit)) + } + + return opts +} + +func (f *MetricsFactory) addHistogramOptions(m Metric) []metric.Int64HistogramOption { + var opts []metric.Int64HistogramOption + if m.Description != "" { + opts = append(opts, metric.WithDescription(m.Description)) + } + + if m.Unit != "" { + opts = append(opts, metric.WithUnit(m.Unit)) + } + + if m.Buckets != nil { + opts = append(opts, metric.WithExplicitBucketBoundaries(m.Buckets...)) + } + + return opts +} diff --git a/metrics/operation_routes.go b/metrics/operation_routes.go new file mode 100644 index 0000000..e9ea4ce --- /dev/null +++ b/metrics/operation_routes.go @@ -0,0 +1,21 @@ +package metrics + +import ( + "context" + + "go.opentelemetry.io/otel/attribute" +) + +// RecordOperationRouteCreated increments the operation-route-created counter. +func (f *MetricsFactory) RecordOperationRouteCreated(ctx context.Context, attributes ...attribute.KeyValue) error { + if f == nil { + return ErrNilFactory + } + + b, err := f.Counter(MetricOperationRoutesCreated) + if err != nil { + return err + } + + return b.WithAttributes(attributes...).AddOne(ctx) +} diff --git a/metrics/system.go b/metrics/system.go new file mode 100644 index 0000000..8b554b7 --- /dev/null +++ b/metrics/system.go @@ -0,0 +1,60 @@ +package metrics + +import ( + "context" +) + +// Pre-configured system metrics for infrastructure monitoring. +var ( + // MetricSystemCPUUsage is a gauge that records the current CPU usage percentage. + MetricSystemCPUUsage = Metric{ + Name: "system.cpu.usage", + Unit: "percentage", + Description: "Current CPU usage percentage of the process host.", + } + + // MetricSystemMemUsage is a gauge that records the current memory usage percentage. + MetricSystemMemUsage = Metric{ + Name: "system.mem.usage", + Unit: "percentage", + Description: "Current memory usage percentage of the process host.", + } +) + +// RecordSystemCPUUsage records the current CPU usage percentage via the factory's gauge. +// The percentage must be in the range [0, 100]. +func (f *MetricsFactory) RecordSystemCPUUsage(ctx context.Context, percentage int64) error { + if f == nil { + return ErrNilFactory + } + + if percentage < 0 || percentage > 100 { + return ErrPercentageOutOfRange + } + + b, err := f.Gauge(MetricSystemCPUUsage) + if err != nil { + return err + } + + return b.Set(ctx, percentage) +} + +// RecordSystemMemUsage records the current memory usage percentage via the factory's gauge. +// The percentage must be in the range [0, 100]. +func (f *MetricsFactory) RecordSystemMemUsage(ctx context.Context, percentage int64) error { + if f == nil { + return ErrNilFactory + } + + if percentage < 0 || percentage > 100 { + return ErrPercentageOutOfRange + } + + b, err := f.Gauge(MetricSystemMemUsage) + if err != nil { + return err + } + + return b.Set(ctx, percentage) +} diff --git a/metrics/transaction.go b/metrics/transaction.go new file mode 100644 index 0000000..a238238 --- /dev/null +++ b/metrics/transaction.go @@ -0,0 +1,21 @@ +package metrics + +import ( + "context" + + "go.opentelemetry.io/otel/attribute" +) + +// RecordTransactionProcessed increments the transaction-processed counter. +func (f *MetricsFactory) RecordTransactionProcessed(ctx context.Context, attributes ...attribute.KeyValue) error { + if f == nil { + return ErrNilFactory + } + + b, err := f.Counter(MetricTransactionsProcessed) + if err != nil { + return err + } + + return b.WithAttributes(attributes...).AddOne(ctx) +} diff --git a/metrics/transaction_routes.go b/metrics/transaction_routes.go new file mode 100644 index 0000000..bb2f331 --- /dev/null +++ b/metrics/transaction_routes.go @@ -0,0 +1,21 @@ +package metrics + +import ( + "context" + + "go.opentelemetry.io/otel/attribute" +) + +// RecordTransactionRouteCreated increments the transaction-route-created counter. +func (f *MetricsFactory) RecordTransactionRouteCreated(ctx context.Context, attributes ...attribute.KeyValue) error { + if f == nil { + return ErrNilFactory + } + + b, err := f.Counter(MetricTransactionRoutesCreated) + if err != nil { + return err + } + + return b.WithAttributes(attributes...).AddOne(ctx) +} diff --git a/observability.go b/observability.go new file mode 100644 index 0000000..f4440c4 --- /dev/null +++ b/observability.go @@ -0,0 +1,272 @@ +// Package observability provides context carriers for attaching and extracting +// OpenTelemetry tracers, metric factories, loggers, and request-scoped span +// attributes. NewTrackingFromContext is the primary convenience entry-point +// used by service handlers and repository methods to obtain all telemetry +// components in a single call. +package observability + +import ( + "context" + "strings" + "sync" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "github.com/google/uuid" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/trace" +) + +// ---- Context key ---- + +type contextKey string + +// ContextKey is the context key used to store ContextValue. +var ContextKey = contextKey("custom_context") + +// ContextValue holds all request-scoped facilities we attach to context. +type ContextValue struct { + HeaderID string + Tracer trace.Tracer + Logger log.Logger + MetricFactory *metrics.MetricsFactory + + // AttrBag holds request-wide attributes to be applied to every span. + // Keep low/medium cardinality attributes here (tenant.id, plan, region, request_id, route). + AttrBag []attribute.KeyValue +} + +// ---- Logger helpers ---- + +// NewLoggerFromContext extracts the Logger from context. +// A nil ctx is normalized to context.Background() so callers never trigger a nil-pointer dereference. +// +//nolint:ireturn +func NewLoggerFromContext(ctx context.Context) log.Logger { + if ctx == nil { + ctx = context.Background() + } + + if cv, ok := ctx.Value(ContextKey).(*ContextValue); ok && cv.Logger != nil { + return cv.Logger + } + + return &log.NopLogger{} +} + +// cloneContextValues returns a shallow copy of the ContextValue from ctx. +// This prevents concurrent mutation of a shared struct when multiple goroutines +// derive child contexts from the same parent. +// The AttrBag slice is deep-copied to avoid aliasing the underlying array. +func cloneContextValues(ctx context.Context) *ContextValue { + existing, _ := ctx.Value(ContextKey).(*ContextValue) + + clone := &ContextValue{} + if existing != nil { + *clone = *existing + + // Deep-copy the slice to avoid aliasing the backing array. + if len(existing.AttrBag) > 0 { + clone.AttrBag = make([]attribute.KeyValue, len(existing.AttrBag)) + copy(clone.AttrBag, existing.AttrBag) + } + } + + return clone +} + +// ContextWithLogger returns a context with the given Logger attached. +func ContextWithLogger(ctx context.Context, logger log.Logger) context.Context { + if ctx == nil { + ctx = context.Background() + } + + values := cloneContextValues(ctx) + values.Logger = logger + + return context.WithValue(ctx, ContextKey, values) +} + +// ---- Tracer helpers ---- + +// ContextWithTracer returns a context with the given trace.Tracer attached. +func ContextWithTracer(ctx context.Context, tracer trace.Tracer) context.Context { + if ctx == nil { + ctx = context.Background() + } + + values := cloneContextValues(ctx) + values.Tracer = tracer + + return context.WithValue(ctx, ContextKey, values) +} + +// ---- Metrics helpers ---- + +// ContextWithMetricFactory returns a context with the given MetricsFactory attached. +func ContextWithMetricFactory(ctx context.Context, metricFactory *metrics.MetricsFactory) context.Context { + if ctx == nil { + ctx = context.Background() + } + + values := cloneContextValues(ctx) + values.MetricFactory = metricFactory + + return context.WithValue(ctx, ContextKey, values) +} + +// ---- Tracking bundle (convenience) ---- + +// TrackingComponents represents the complete set of tracking components extracted from context. +// This struct encapsulates all telemetry-related dependencies in a single, cohesive unit. +type TrackingComponents struct { + Logger log.Logger + Tracer trace.Tracer + HeaderID string + MetricFactory *metrics.MetricsFactory +} + +// NewTrackingFromContext extracts tracking components from context with intelligent fallback. +// It follows the fail-safe principle: preserve valid components, provide sensible defaults for invalid ones. +// +//nolint:ireturn +func NewTrackingFromContext(ctx context.Context) (log.Logger, trace.Tracer, string, *metrics.MetricsFactory) { + if ctx == nil { + ctx = context.Background() + } + + components := extractTrackingComponents(ctx) + + return components.Logger, components.Tracer, components.HeaderID, components.MetricFactory +} + +// extractTrackingComponents performs the core extraction logic with comprehensive fallback strategy. +func extractTrackingComponents(ctx context.Context) TrackingComponents { + cv, ok := ctx.Value(ContextKey).(*ContextValue) + if !ok || cv == nil { + return newDefaultTrackingComponents() + } + + return TrackingComponents{ + Logger: resolveLogger(cv.Logger), + Tracer: resolveTracer(cv.Tracer), + HeaderID: resolveHeaderID(cv.HeaderID), + MetricFactory: resolveMetricFactory(cv.MetricFactory), + } +} + +// resolveLogger applies the Null Object Pattern for logger resolution. +// Returns a functional logger instance in all cases, eliminating nil checks downstream. +func resolveLogger(logger log.Logger) log.Logger { + if logger != nil { + return logger + } + + return &log.NopLogger{} // Null Object Pattern - always functional +} + +// resolveTracer ensures a valid tracer is always available using OpenTelemetry best practices. +// The default tracer maintains observability even when context is incomplete. +func resolveTracer(tracer trace.Tracer) trace.Tracer { + if tracer != nil { + return tracer + } + + return otel.Tracer("observability.default") // Descriptive tracer name for debugging +} + +// resolveHeaderID implements the correlation ID pattern with UUID fallback. +// Ensures every request has a unique identifier for distributed tracing. +// +// IMPORTANT: When no HeaderID is present in context, a new UUID is generated on +// every call to NewTrackingFromContext. Ingress middleware (HTTP/gRPC) MUST persist +// the generated ID back into context via ContextWithSpanAttributes so that downstream +// extractions within the same request return a stable correlation ID. +func resolveHeaderID(headerID string) string { + if trimmed := strings.TrimSpace(headerID); trimmed != "" { + return trimmed + } + + return uuid.New().String() // Generate unique correlation ID +} + +var ( + defaultFactoryOnce sync.Once + defaultFactory *metrics.MetricsFactory +) + +func getDefaultMetricsFactory() *metrics.MetricsFactory { + defaultFactoryOnce.Do(func() { + meter := otel.GetMeterProvider().Meter("observability.default") + + f, err := metrics.NewMetricsFactory(meter, &log.NopLogger{}) + if err != nil { + defaultFactory = metrics.NewNopFactory() + return + } + + defaultFactory = f + }) + + return defaultFactory +} + +// resolveMetricFactory ensures a valid metrics factory is always available following the fail-safe pattern. +// Provides a cached default factory when none exists, initialized once via sync.Once. +// Never returns nil: if factory creation fails, it falls back to a no-op factory. +func resolveMetricFactory(factory *metrics.MetricsFactory) *metrics.MetricsFactory { + if factory != nil { + return factory + } + + return getDefaultMetricsFactory() +} + +// newDefaultTrackingComponents creates a complete set of default components. +// Used when context extraction fails entirely - ensures system remains operational. +func newDefaultTrackingComponents() TrackingComponents { + return TrackingComponents{ + Logger: &log.NopLogger{}, + Tracer: otel.Tracer("observability.default"), + HeaderID: uuid.New().String(), + MetricFactory: resolveMetricFactory(nil), + } +} + +// ---- Attribute Bag (request-wide span attributes) ---- + +// ContextWithSpanAttributes appends one or more attributes to the request's AttrBag. +// Call this once at the ingress (HTTP/gRPC middleware) and avoid per-layer duplication. +// Example keys: tenant.id, enduser.id, request.route, region, plan. +func ContextWithSpanAttributes(ctx context.Context, kv ...attribute.KeyValue) context.Context { + if ctx == nil { + ctx = context.Background() + } + + if len(kv) == 0 { + return ctx + } + + values := cloneContextValues(ctx) + // Append to the cloned (independent) slice. + values.AttrBag = append(values.AttrBag, kv...) + + return context.WithValue(ctx, ContextKey, values) +} + +// AttributesFromContext returns a shallow copy of the AttrBag slice, safe to reuse by processors. +func AttributesFromContext(ctx context.Context) []attribute.KeyValue { + if ctx == nil { + return nil + } + + if values, ok := ctx.Value(ContextKey).(*ContextValue); ok && values != nil && len(values.AttrBag) > 0 { + out := make([]attribute.KeyValue, len(values.AttrBag)) + copy(out, values.AttrBag) + + return out + } + + return nil +} diff --git a/redaction/doc.go b/redaction/doc.go new file mode 100644 index 0000000..fd2385c --- /dev/null +++ b/redaction/doc.go @@ -0,0 +1,6 @@ +// Package redaction provides sensitive field detection for log and span attribute +// redaction. IsSensitiveField checks a field name against a default list of +// credentials, PII, and financial identifiers, with support for camelCase +// normalization and word-boundary matching. Callers may extend the default list +// with additional field names via the variadic extra parameter. +package redaction diff --git a/redaction/sensitive_fields.go b/redaction/sensitive_fields.go new file mode 100644 index 0000000..0d0ec32 --- /dev/null +++ b/redaction/sensitive_fields.go @@ -0,0 +1,287 @@ +package redaction + +import ( + "maps" + "regexp" + "slices" + "strings" + "sync" + "unicode" +) + +var defaultSensitiveFields = []string{ + "password", + "newpassword", + "oldpassword", + "passwordsalt", + "token", + "secret", + "key", + "authorization", + "auth", + "credential", + "credentials", + "apikey", + "api_key", + "access_token", + "accesstoken", + "refresh_token", + "refreshtoken", + "bearer", + "jwt", + "session_id", + "sessionid", + "cookie", + "private_key", + "privatekey", + "clientid", + "client_id", + "clientsecret", + "client_secret", + "passwd", + "passphrase", + "card_number", + "cardnumber", + "cvv", + "cvc", + "ssn", + "social_security", + "pin", + "otp", + "account_number", + "accountnumber", + "routing_number", + "routingnumber", + "iban", + "swift", + "swift_code", + "bic", + "pan", + "expiry", + "expiry_date", + "expiration_date", + "card_expiry", + "date_of_birth", + "dob", + "tax_id", + "taxid", + "tin", + "national_id", + "sort_code", + "bsb", + "security_answer", + "security_question", + "mother_maiden_name", + "mfa_code", + "totp", + "biometric", + "fingerprint", + "certificate", + "connection_string", + "database_url", + // PII fields + "email", + "phone", + "phone_number", + "address", + "street", + "city", + "zip", + "postal_code", +} + +var ( + sensitiveFieldsMapOnce sync.Once + sensitiveFieldsMap map[string]bool +) + +// DefaultSensitiveFields returns a copy of the default sensitive field names. +// The returned slice is a clone — callers cannot mutate shared state. +func DefaultSensitiveFields() []string { + clone := make([]string, len(defaultSensitiveFields)) + copy(clone, defaultSensitiveFields) + + return clone +} + +// ensureSensitiveFieldsMap returns the internal map directly (no clone). +// For internal use only where we just need read access. +func ensureSensitiveFieldsMap() map[string]bool { + sensitiveFieldsMapOnce.Do(func() { + sensitiveFieldsMap = make(map[string]bool, len(defaultSensitiveFields)) + for _, field := range defaultSensitiveFields { + sensitiveFieldsMap[field] = true + } + }) + + return sensitiveFieldsMap +} + +// DefaultSensitiveFieldsMap provides a map version of DefaultSensitiveFields +// for lookup operations. All field names are lowercase for +// case-insensitive matching. The underlying cache is initialized only once; +// each call returns a shallow clone so callers cannot mutate shared state. +func DefaultSensitiveFieldsMap() map[string]bool { + m := ensureSensitiveFieldsMap() + clone := make(map[string]bool, len(m)) + maps.Copy(clone, m) + + return clone +} + +// shortSensitiveTokens contains tokens that are too short or generic for +// substring matching and require exact token matching instead. +var shortSensitiveTokens = map[string]bool{ + "key": true, + "auth": true, + "pin": true, + "otp": true, + "cvv": true, + "cvc": true, + "ssn": true, + "pan": true, + "bic": true, + "bsb": true, + "dob": true, + "tin": true, + "jwt": true, + "zip": true, + "city": true, +} + +// tokenSplitRegex splits field names by non-alphanumeric characters. +var tokenSplitRegex = regexp.MustCompile(`[^a-zA-Z0-9]+`) + +// normalizeFieldName converts camelCase and PascalCase field names into +// underscore-delimited lowercase tokens. For example, "sessionToken" becomes +// "session_token" and "APIKey" becomes "api_key". This ensures that sensitive +// field detection works for camelCase naming conventions. +func normalizeFieldName(fieldName string) string { + var b strings.Builder + + runes := []rune(fieldName) + + for i, r := range runes { + if i > 0 { + prev := runes[i-1] + + var next rune + if i+1 < len(runes) { + next = runes[i+1] + } + + if unicode.IsUpper(r) && + (unicode.IsLower(prev) || unicode.IsDigit(prev) || + (unicode.IsUpper(prev) && next != 0 && unicode.IsLower(next))) { + b.WriteByte('_') + } + } + + b.WriteRune(r) + } + + return strings.ToLower(b.String()) +} + +// IsSensitiveField checks if a field name is considered sensitive based on +// the default sensitive fields list plus any extra fields provided. The check +// is case-insensitive and handles camelCase field names by normalizing them to +// underscore-delimited tokens. Short tokens (like "key", "auth") use exact +// token matching to avoid false positives, while longer patterns use +// word-boundary matching. +// +// Extra fields are additional field names to treat as sensitive beyond the +// built-in default list. Pass them as individual string arguments. +func IsSensitiveField(fieldName string, extra ...string) bool { + m := ensureSensitiveFieldsMap() + lowerField := strings.ToLower(fieldName) + + // Check exact match with lowercase against defaults + if m[lowerField] { + return true + } + + // Check exact match against extra fields + for _, e := range extra { + if strings.EqualFold(fieldName, e) { + return true + } + } + + // Also check with camelCase normalization (e.g., "sessionToken" -> "session_token") + normalized := normalizeFieldName(fieldName) + if normalized != lowerField && m[normalized] { + return true + } + + // Merge tokens from both representations for token matching + tokens := tokenSplitRegex.Split(normalized, -1) + + for _, sensitive := range defaultSensitiveFields { + if shortSensitiveTokens[sensitive] { + if slices.Contains(tokens, sensitive) { + return true + } + } else { + if matchesWordBoundary(normalized, sensitive) { + return true + } + + if normalized != lowerField && matchesWordBoundary(lowerField, sensitive) { + return true + } + } + } + + // Check extra fields with word-boundary matching on the normalized name + for _, e := range extra { + eLower := strings.ToLower(e) + if matchesWordBoundary(normalized, eLower) { + return true + } + } + + return false +} + +// matchesWordBoundary checks if the pattern appears in the field with word boundaries. +// A word boundary is either the start/end of string or a non-alphanumeric character. +func matchesWordBoundary(field, pattern string) bool { + if len(pattern) == 0 { + return false + } + + idx := strings.Index(field, pattern) + if idx == -1 { + return false + } + + for idx != -1 { + start := idx + end := idx + len(pattern) + + startOk := start == 0 || !isAlphanumeric(field[start-1]) + endOk := end == len(field) || !isAlphanumeric(field[end]) + + if startOk && endOk { + return true + } + + if end >= len(field) { + break + } + + nextIdx := strings.Index(field[end:], pattern) + if nextIdx == -1 { + break + } + + idx = end + nextIdx + } + + return false +} + +func isAlphanumeric(b byte) bool { + return (b >= 'a' && b <= 'z') || (b >= 'A' && b <= 'Z') || (b >= '0' && b <= '9') +} diff --git a/runtime/error_reporter.go b/runtime/error_reporter.go new file mode 100644 index 0000000..ff39c84 --- /dev/null +++ b/runtime/error_reporter.go @@ -0,0 +1,198 @@ +package runtime + +import ( + "context" + "fmt" + "reflect" + "sync" +) + +// ErrorReporter defines an interface for external error reporting services. +// This abstraction allows integration with error tracking services (e.g., logging +// to Grafana Loki, sending to an alerting system) without creating a hard +// dependency on any specific SDK. +// +// Implementations should: +// - Handle nil contexts gracefully +// - Be safe for concurrent use +// - Not panic themselves +type ErrorReporter interface { + // CaptureException reports a panic/exception to the error tracking service. + // The tags map can include metadata like "component", "goroutine_name", etc. + CaptureException(ctx context.Context, err error, tags map[string]string) +} + +// errorReporterInstance is the singleton error reporter. +// It remains nil unless explicitly configured. +var ( + errorReporterInstance ErrorReporter + errorReporterMu sync.RWMutex +) + +// SetErrorReporter configures the global error reporter for panic reporting. +// Pass nil to disable error reporting. +// +// This should be called once during application startup if an external +// error tracking service is desired. +// +// Example with structured logging: +// +// type logReporter struct { +// logger *slog.Logger +// } +// +// func (r *logReporter) CaptureException(ctx context.Context, err error, tags map[string]string) { +// attrs := make([]any, 0, len(tags)*2) +// for k, v := range tags { +// attrs = append(attrs, k, v) +// } +// r.logger.ErrorContext(ctx, "panic recovered", append(attrs, "error", err)...) +// } +// +// runtime.SetErrorReporter(&logReporter{logger: slog.Default()}) +func SetErrorReporter(reporter ErrorReporter) { + errorReporterMu.Lock() + defer errorReporterMu.Unlock() + + errorReporterInstance = reporter +} + +// GetErrorReporter returns the currently configured error reporter. +// Returns nil if no reporter has been configured. +func GetErrorReporter() ErrorReporter { + errorReporterMu.RLock() + defer errorReporterMu.RUnlock() + + return errorReporterInstance +} + +var ( + // productionMode controls whether sensitive data is redacted in error reports. + // When true, stack traces and detailed panic values are suppressed. + productionMode bool + productionModeMu sync.RWMutex +) + +const redactedPanicMsg = "panic recovered (details redacted)" + +// SetProductionMode enables or disables production mode for error reporting. +// In production mode, stack traces and potentially sensitive panic details are redacted. +func SetProductionMode(enabled bool) { + productionModeMu.Lock() + defer productionModeMu.Unlock() + + productionMode = enabled +} + +// IsProductionMode returns whether production mode is enabled. +func IsProductionMode() bool { + productionModeMu.RLock() + defer productionModeMu.RUnlock() + + return productionMode +} + +// reportPanicToErrorService reports a panic to the configured error reporter if one exists. +// This is called internally by recovery functions. +// In production mode, stack traces and potentially sensitive panic values are redacted. +func reportPanicToErrorService( + ctx context.Context, + panicValue any, + stack []byte, + component, goroutineName string, +) { + reporter := GetErrorReporter() + if reporter == nil { + return + } + + isProduction := IsProductionMode() + + // Convert panic value to error, redacting details in production + err := toPanicError(panicValue, isProduction) + + tags := map[string]string{ + "component": component, + "goroutine_name": goroutineName, + "panic_type": "recovered", + } + + // Include stack trace only in non-production mode + if len(stack) > 0 && !isProduction { + stackStr := string(stack) + + const maxStackLen = 4096 + if len(stackStr) > maxStackLen { + stackStr = stackStr[:maxStackLen] + "\n...[truncated]" + } + + tags["stack_trace"] = stackStr + } + + reporter.CaptureException(ctx, err, tags) +} + +// panicError wraps a panic value as an error for reporting. +type panicError struct { + message string +} + +// Error returns the panic error message. +func (e *panicError) Error() string { + return e.message +} + +func toPanicError(panicValue any, isProduction bool) error { + if isProduction { + return &panicError{message: redactedPanicMsg} + } + + // Guard against typed-nil error values: an interface holding (type=*MyError, value=nil) + // would pass the type assertion but panic on .Error(). Use reflect to detect this. + if err, ok := panicValue.(error); ok && !isTypedNil(panicValue) { + return err + } + + if message, ok := panicValue.(string); ok { + return &panicError{message: message} + } + + return &panicError{message: "panic: " + formatPanicValue(panicValue)} +} + +// isTypedNil returns true if v is an interface holding a nil pointer/nil value. +func isTypedNil(v any) bool { + if v == nil { + return false // untyped nil is not a typed nil + } + + rv := reflect.ValueOf(v) + + switch rv.Kind() { + case reflect.Ptr, reflect.Interface, reflect.Slice, reflect.Map, reflect.Chan, reflect.Func: + return rv.IsNil() + default: + return false + } +} + +// formatPanicValue formats a panic value as a string. +func formatPanicValue(value any) string { + if value == nil { + return "" + } + + // Guard against typed-nil values that would panic on method calls. + if isTypedNil(value) { + return fmt.Sprintf("<%T>(nil)", value) + } + + switch val := value.(type) { + case string: + return val + case error: + return val.Error() + default: + return fmt.Sprintf("%v", value) + } +} diff --git a/runtime/goroutine.go b/runtime/goroutine.go new file mode 100644 index 0000000..a7f9bf9 --- /dev/null +++ b/runtime/goroutine.go @@ -0,0 +1,93 @@ +package runtime + +import ( + "context" + + "github.com/LerianStudio/lib-observability/log" +) + +// SafeGo launches a goroutine with panic recovery. If the goroutine panics, +// the panic is handled according to the specified policy. +// +// Note: This function does not record metrics or span events because it lacks +// context. For observability integration, use SafeGoWithContext instead. +// +// Parameters: +// - logger: Logger for recording panic information +// - name: Descriptive name for the goroutine (used in logs) +// - policy: How to handle panics (KeepRunning or CrashProcess) +// - fn: The function to execute in the goroutine +// +// Example: +// +// runtime.SafeGo(logger, "email-sender", runtime.KeepRunning, func() { +// sendEmail(to, subject, body) +// }) +func SafeGo(logger Logger, name string, policy PanicPolicy, fn func()) { + if fn == nil { + if logger != nil { + logger.Log(context.Background(), log.LevelWarn, + "SafeGo called with nil callback, ignoring", + log.String("goroutine", name), + ) + } + + return + } + + go func() { + defer RecoverWithPolicy(logger, name, policy) + + fn() + }() +} + +// SafeGoWithContext launches a goroutine with panic recovery and context +// propagation. +// +// Note: For better observability labeling, prefer SafeGoWithContextAndComponent. +func SafeGoWithContext( + ctx context.Context, + logger Logger, + name string, + policy PanicPolicy, + fn func(context.Context), +) { + SafeGoWithContextAndComponent(ctx, logger, "", name, policy, fn) +} + +// SafeGoWithContextAndComponent is like SafeGoWithContext but also records the +// provided component name in observability signals. +// +// Parameters: +// - ctx: Context for cancellation, values, and observability +// - logger: Logger for recording panic information +// - component: The service component (e.g., "transaction", "onboarding") +// - name: Descriptive name for the goroutine (used in logs and metrics) +// - policy: How to handle panics (KeepRunning or CrashProcess) +// - fn: The function to execute, receiving the context +func SafeGoWithContextAndComponent( + ctx context.Context, + logger Logger, + component, name string, + policy PanicPolicy, + fn func(context.Context), +) { + if fn == nil { + if logger != nil { + logger.Log(context.Background(), log.LevelWarn, + "SafeGoWithContextAndComponent called with nil callback, ignoring", + log.String("component", component), + log.String("goroutine", name), + ) + } + + return + } + + go func() { + defer RecoverWithPolicyAndContext(ctx, logger, component, name, policy) + + fn(ctx) + }() +} diff --git a/runtime/metrics.go b/runtime/metrics.go new file mode 100644 index 0000000..d6dc777 --- /dev/null +++ b/runtime/metrics.go @@ -0,0 +1,136 @@ +package runtime + +import ( + "context" + "sync" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" +) + +// PanicMetrics provides panic-related metrics using OpenTelemetry. +// It wraps lib-observability's MetricsFactory for consistent metric handling. +type PanicMetrics struct { + factory *metrics.MetricsFactory + logger Logger +} + +// panicRecoveredMetric defines the metric for counting recovered panics. +var panicRecoveredMetric = metrics.Metric{ + Name: constant.MetricPanicRecoveredTotal, + Unit: "1", + Description: "Total number of recovered panics", +} + +// panicMetricsInstance is the singleton instance for panic metrics. +// It is initialized lazily via InitPanicMetrics. +var ( + panicMetricsInstance *PanicMetrics + panicMetricsMu sync.RWMutex +) + +// InitPanicMetrics initializes panic metrics with the provided MetricsFactory. +// +// Backward compatibility: +// - InitPanicMetrics(factory) +// - InitPanicMetrics(factory, logger) +// +// The logger is optional and used only for metric recording diagnostics. +// This should be called once during application startup after telemetry is initialized. +// It is safe to call multiple times; subsequent calls are no-ops. +// +// Example: +// +// tl, err := tracing.NewTelemetry(cfg) +// if err != nil { +// // handle error +// } +// tl.ApplyGlobals() +// runtime.InitPanicMetrics(tl.MetricsFactory) +func InitPanicMetrics(factory *metrics.MetricsFactory, logger ...Logger) { + panicMetricsMu.Lock() + defer panicMetricsMu.Unlock() + + if factory == nil { + return + } + + if panicMetricsInstance != nil { + return // Already initialized + } + + var l Logger + if len(logger) > 0 { + l = logger[0] + } + + panicMetricsInstance = &PanicMetrics{ + factory: factory, + logger: l, + } +} + +// GetPanicMetrics returns the singleton PanicMetrics instance. +// Returns nil if InitPanicMetrics has not been called. +func GetPanicMetrics() *PanicMetrics { + panicMetricsMu.RLock() + defer panicMetricsMu.RUnlock() + + return panicMetricsInstance +} + +// ResetPanicMetrics clears the panic metrics singleton. +// This is primarily intended for testing to ensure test isolation. +// In production, this should generally not be called. +func ResetPanicMetrics() { + panicMetricsMu.Lock() + defer panicMetricsMu.Unlock() + + panicMetricsInstance = nil +} + +// RecordPanicRecovered increments the panic_recovered_total counter with the given labels. +// If metrics are not initialized, this is a no-op. +// +// Parameters: +// - ctx: Context for metric recording (may contain trace correlation) +// - component: The component where the panic occurred (e.g., "transaction", "onboarding", "crm") +// - goroutineName: The name of the goroutine or handler (e.g., "http_handler", "rabbitmq_worker") +func (pm *PanicMetrics) RecordPanicRecovered(ctx context.Context, component, goroutineName string) { + if pm == nil || pm.factory == nil { + return + } + + counter, err := pm.factory.Counter(panicRecoveredMetric) + if err != nil { + if pm.logger != nil { + pm.logger.Log(ctx, log.LevelWarn, "failed to create panic metric counter", log.Err(err)) + } + + return + } + + err = counter. + WithLabels(map[string]string{ + "component": constant.SanitizeMetricLabel(component), + "goroutine_name": constant.SanitizeMetricLabel(goroutineName), + }). + AddOne(ctx) + if err != nil { + if pm.logger != nil { + pm.logger.Log(ctx, log.LevelWarn, "failed to record panic metric", log.Err(err)) + } + + return + } +} + +// recordPanicMetric is a package-level helper that records a panic metric if metrics are initialized. +// This is called internally by recovery functions. +func recordPanicMetric(ctx context.Context, component, goroutineName string) { + pm := GetPanicMetrics() + if pm != nil { + pm.RecordPanicRecovered(ctx, component, goroutineName) + } +} diff --git a/runtime/policy.go b/runtime/policy.go new file mode 100644 index 0000000..6d8dd1f --- /dev/null +++ b/runtime/policy.go @@ -0,0 +1,28 @@ +package runtime + +// PanicPolicy determines how a recovered panic should be handled. +type PanicPolicy int + +const ( + // KeepRunning logs the panic and stack trace, then continues execution. + // Use for HTTP/gRPC handlers and worker goroutines where crashing would + // affect other requests or tasks. + KeepRunning PanicPolicy = iota + + // CrashProcess logs the panic and stack trace, then re-panics to crash + // the process. Use for critical invariant violations where continuing + // would cause data corruption or undefined behavior. + CrashProcess +) + +// String returns the string representation of the PanicPolicy. +func (p PanicPolicy) String() string { + switch p { + case KeepRunning: + return "KeepRunning" + case CrashProcess: + return "CrashProcess" + default: + return "Unknown" + } +} diff --git a/runtime/recover.go b/runtime/recover.go new file mode 100644 index 0000000..6950257 --- /dev/null +++ b/runtime/recover.go @@ -0,0 +1,229 @@ +package runtime + +import ( + "context" + "runtime/debug" + + "github.com/LerianStudio/lib-observability/log" +) + +// Logger defines the minimal logging interface required by runtime. +// This interface is satisfied by github.com/LerianStudio/lib-observability/log.Logger. +type Logger interface { + Log(ctx context.Context, level log.Level, msg string, fields ...log.Field) +} + +// RecoverAndLog recovers from a panic, logs it with the stack trace, and +// continues execution. Use this in defer statements for handlers and workers +// where you want to prevent crashes. +// +// Note: This function does not record metrics or span events because it lacks +// context. For observability integration, use RecoverAndLogWithContext instead. +// +// Example: +// +// func worker() { +// defer runtime.RecoverAndLog(logger, "worker") +// // ... +// } +func RecoverAndLog(logger Logger, name string) { + if r := recover(); r != nil { + logPanic(logger, name, r) + } +} + +// RecoverAndLogWithContext is like RecoverAndLog but with full observability integration. +// It records metrics, span events, and reports to error tracking services. +// +// Parameters: +// - ctx: Context for observability (metrics, tracing, error reporting) +// - logger: Logger for structured logging +// - component: The service component (e.g., "transaction", "onboarding") +// - name: Descriptive name for the goroutine or handler +// +// Example: +// +// func handler(ctx context.Context) { +// defer runtime.RecoverAndLogWithContext(ctx, logger, "transaction", "create_handler") +// // ... +// } +func RecoverAndLogWithContext(ctx context.Context, logger Logger, component, name string) { + if r := recover(); r != nil { + stack := debug.Stack() + logPanicWithStack(logger, name, r, stack) + recordPanicObservability(ctx, r, stack, component, name) + } +} + +// RecoverAndCrash recovers from a panic, logs it with the stack trace, and +// re-panics to crash the process. Use this in defer statements for critical +// operations where continuing after a panic would be dangerous. +// +// Example: +// +// func criticalOperation() { +// defer runtime.RecoverAndCrash(logger, "critical-op") +// // ... +// } +func RecoverAndCrash(logger Logger, name string) { + if r := recover(); r != nil { + logPanic(logger, name, r) + panic(r) + } +} + +// RecoverAndCrashWithContext is like RecoverAndCrash but with full observability integration. +// It records metrics and span events before re-panicking. +// +// Parameters: +// - ctx: Context for observability (metrics, tracing, error reporting) +// - logger: Logger for structured logging +// - component: The service component (e.g., "transaction", "onboarding") +// - name: Descriptive name for the goroutine or handler +func RecoverAndCrashWithContext(ctx context.Context, logger Logger, component, name string) { + if r := recover(); r != nil { + stack := debug.Stack() + logPanicWithStack(logger, name, r, stack) + recordPanicObservability(ctx, r, stack, component, name) + panic(r) + } +} + +// RecoverWithPolicy recovers from a panic and handles it according to the +// specified policy. Use this when the recovery behavior needs to be determined +// at runtime. +// +// Note: This function does not record metrics or span events because it lacks +// context. For observability integration, use RecoverWithPolicyAndContext instead. +// +// Example: +// +// func flexibleHandler(policy runtime.PanicPolicy) { +// defer runtime.RecoverWithPolicy(logger, "handler", policy) +// // ... +// } +func RecoverWithPolicy(logger Logger, name string, policy PanicPolicy) { + if r := recover(); r != nil { + logPanic(logger, name, r) + + if policy == CrashProcess { + panic(r) + } + } +} + +// RecoverWithPolicyAndContext is like RecoverWithPolicy but with full observability integration. +// It records metrics, span events, and reports to error tracking services. +// +// Parameters: +// - ctx: Context for observability (metrics, tracing, error reporting) +// - logger: Logger for structured logging +// - component: The service component (e.g., "transaction", "onboarding") +// - name: Descriptive name for the goroutine or handler +// - policy: How to handle the panic after logging/recording +// +// Example: +// +// func worker(ctx context.Context, policy runtime.PanicPolicy) { +// defer runtime.RecoverWithPolicyAndContext(ctx, logger, "transaction", "balance_worker", policy) +// // ... +// } +func RecoverWithPolicyAndContext( + ctx context.Context, + logger Logger, + component, name string, + policy PanicPolicy, +) { + if recovered := recover(); recovered != nil { + stack := debug.Stack() + logPanicWithStack(logger, name, recovered, stack) + recordPanicObservability(ctx, recovered, stack, component, name) + + if policy == CrashProcess { + panic(recovered) + } + } +} + +// logPanic logs the panic value and stack trace using the provided logger. +// This is the legacy function that captures stack internally. +func logPanic(logger Logger, name string, panicValue any) { + stack := debug.Stack() + logPanicWithStack(logger, name, panicValue, stack) +} + +// logPanicWithStack logs the panic with a pre-captured stack trace. +// In production mode, panic values are redacted to prevent leaking sensitive data. +func logPanicWithStack(logger Logger, name string, panicValue any, stack []byte) { + if logger == nil { + // Last resort fallback - should never happen in production + return + } + + if IsProductionMode() { + logger.Log(context.Background(), log.LevelError, + "panic recovered", + log.String("source", name), + log.String("value", redactedPanicMsg), + ) + + return + } + + logger.Log(context.Background(), log.LevelError, + "panic recovered", + log.String("source", name), + log.Any("value", panicValue), + log.String("stack_trace", string(stack)), + ) +} + +// recordPanicObservability records panic information to all configured observability systems. +// This includes metrics, distributed tracing, and error reporting services. +func recordPanicObservability( + ctx context.Context, + panicValue any, + stack []byte, + component, name string, +) { + // Record metric + recordPanicMetric(ctx, component, name) + + // Record span event + RecordPanicToSpanWithComponent(ctx, panicValue, stack, component, name) + + // Report to error tracking service (e.g., Sentry) if configured + reportPanicToErrorService(ctx, panicValue, stack, component, name) +} + +// HandlePanicValue processes a panic value that was already recovered by an external +// mechanism (e.g., Fiber's recover middleware). This function logs and records +// observability data without calling recover() itself. +// +// Use this when integrating with frameworks that provide their own panic recovery +// but still need our observability pipeline. +// +// Parameters: +// - ctx: Context for observability (metrics, tracing, error reporting) +// - logger: Logger for structured logging +// - panicValue: The panic value recovered by the external mechanism +// - component: The service component (e.g., "matcher", "ingestion") +// - name: Descriptive name for the handler (e.g., "http_handler") +// +// Example (Fiber middleware): +// +// recover.New(recover.Config{ +// StackTraceHandler: func(c *fiber.Ctx, panicValue any) { +// ctx := extractContext(c) +// runtime.HandlePanicValue(ctx, logger, panicValue, "matcher", "http_handler") +// }, +// }) +func HandlePanicValue(ctx context.Context, logger Logger, panicValue any, component, name string) { + if panicValue == nil { + return + } + + stack := debug.Stack() + logPanicWithStack(logger, name, panicValue, stack) + recordPanicObservability(ctx, panicValue, stack, component, name) +} diff --git a/runtime/tracing.go b/runtime/tracing.go new file mode 100644 index 0000000..212d826 --- /dev/null +++ b/runtime/tracing.go @@ -0,0 +1,137 @@ +package runtime + +import ( + "context" + "errors" + "fmt" + "regexp" + + constant "github.com/LerianStudio/lib-observability/constants" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/codes" + "go.opentelemetry.io/otel/trace" +) + +// maxPanicValueLen is the maximum length for a panic value string exported to spans. +const maxPanicValueLen = 1024 + +// maxStackTraceLen is the maximum length for a stack trace string exported to spans. +const maxStackTraceLen = 4096 + +// sensitivePattern matches common sensitive data patterns for redaction in span attributes. +// Covers passwords, tokens, secrets, API keys, credentials, and connection strings. +var sensitivePattern = regexp.MustCompile( + `(?i)(password|passwd|pwd|token|secret|api[_-]?key|credential|bearer|authorization)[=:]\s*\S+`, +) + +// sensitiveRedaction is the replacement string for redacted sensitive data. +const sensitiveRedaction = "[REDACTED]" + +// sanitizePanicValue truncates and redacts sensitive patterns from a panic value string. +func sanitizePanicValue(raw string) string { + sanitized := sensitivePattern.ReplaceAllString(raw, sensitiveRedaction) + + if len(sanitized) > maxPanicValueLen { + return sanitized[:maxPanicValueLen] + "...[truncated]" + } + + return sanitized +} + +// sanitizeStackTrace truncates a stack trace for safe span export. +func sanitizeStackTrace(stack []byte) string { + s := string(stack) + + if len(s) > maxStackTraceLen { + return s[:maxStackTraceLen] + "\n...[truncated]" + } + + return s +} + +// ErrPanic is the sentinel error for recovered panics recorded to spans. +var ErrPanic = errors.New("panic") + +// PanicSpanEventName is the event name used when recording panic events on spans. +const PanicSpanEventName = constant.EventPanicRecovered + +// RecordPanicToSpan records a recovered panic as an error event on the current span. +// This enriches distributed traces with panic information for debugging. +// +// The function: +// - Adds a "panic.recovered" event with panic value, stack trace, and goroutine name +// - Records the panic as an error using span.RecordError +// - Sets the span status to Error with a descriptive message +// +// Parameters: +// - ctx: Context containing the active span +// - panicValue: The value passed to panic() +// - stack: The stack trace captured via debug.Stack() +// - goroutineName: The name of the goroutine where the panic occurred +// +// If there is no active span in the context, this function is a no-op. +func RecordPanicToSpan(ctx context.Context, panicValue any, stack []byte, goroutineName string) { + recordPanicToSpanInternal(ctx, panicValue, stack, "", goroutineName) +} + +// RecordPanicToSpanWithComponent is like RecordPanicToSpan but also includes the component name. +// This is useful for HTTP/gRPC handlers where both component and handler name are relevant. +// +// Parameters: +// - ctx: Context containing the active span +// - panicValue: The value passed to panic() +// - stack: The stack trace captured via debug.Stack() +// - component: The service component (e.g., "transaction", "onboarding") +// - goroutineName: The name of the handler or goroutine +func RecordPanicToSpanWithComponent( + ctx context.Context, + panicValue any, + stack []byte, + component, goroutineName string, +) { + recordPanicToSpanInternal(ctx, panicValue, stack, component, goroutineName) +} + +// recordPanicToSpanInternal is the shared implementation for recording panic events. +// Panic values and stack traces are sanitized to prevent leaking sensitive data +// into distributed tracing backends. +func recordPanicToSpanInternal( + ctx context.Context, + panicValue any, + stack []byte, + component, goroutineName string, +) { + span := trace.SpanFromContext(ctx) + if !span.IsRecording() { + return + } + + panicStr := sanitizePanicValue(fmt.Sprintf("%v", panicValue)) + stackStr := sanitizeStackTrace(stack) + + // Build attributes list + attrs := []attribute.KeyValue{ + attribute.String("panic.value", panicStr), + attribute.String("panic.stack", stackStr), + attribute.String("panic.goroutine_name", goroutineName), + } + + // Add component if provided + if component != "" { + attrs = append(attrs, attribute.String("panic.component", component)) + } + + // Add detailed event with all panic information + span.AddEvent(PanicSpanEventName, trace.WithAttributes(attrs...)) + + // Record sanitized error for error-tracking integrations + span.RecordError(fmt.Errorf("%w: %s", ErrPanic, panicStr)) + + // Set span status to Error + statusMsg := "panic recovered in " + goroutineName + if component != "" { + statusMsg = fmt.Sprintf("panic recovered in %s/%s", component, goroutineName) + } + + span.SetStatus(codes.Error, statusMsg) +} diff --git a/system.go b/system.go new file mode 100644 index 0000000..06c74aa --- /dev/null +++ b/system.go @@ -0,0 +1,60 @@ +package observability + +import ( + "context" + "time" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "github.com/shirou/gopsutil/cpu" + "github.com/shirou/gopsutil/mem" +) + +// GetCPUUsage reads the current CPU usage and records it through the MetricsFactory gauge. +// If factory is nil, the reading is performed but metric recording is skipped. +func GetCPUUsage(ctx context.Context, factory *metrics.MetricsFactory) { + logger := NewLoggerFromContext(ctx) + + out, err := cpu.Percent(100*time.Millisecond, false) + if err != nil { + logger.Log(ctx, log.LevelWarn, "error getting CPU usage", log.Err(err)) + } + + var percentageCPU int64 = 0 + if len(out) > 0 { + percentageCPU = int64(out[0]) + } + + if factory == nil { + logger.Log(ctx, log.LevelWarn, "metrics factory is nil, skipping CPU usage recording") + return + } + + if err := factory.RecordSystemCPUUsage(ctx, percentageCPU); err != nil { + logger.Log(ctx, log.LevelWarn, "error recording CPU gauge", log.Err(err)) + } +} + +// GetMemUsage reads the current memory usage and records it through the MetricsFactory gauge. +// If factory is nil, the reading is performed but metric recording is skipped. +func GetMemUsage(ctx context.Context, factory *metrics.MetricsFactory) { + logger := NewLoggerFromContext(ctx) + + var percentageMem int64 = 0 + + out, err := mem.VirtualMemory() + if err != nil { + logger.Log(ctx, log.LevelWarn, "error getting memory info", log.Err(err)) + } else { + percentageMem = int64(out.UsedPercent) + } + + if factory == nil { + logger.Log(ctx, log.LevelWarn, "metrics factory is nil, skipping memory usage recording") + return + } + + if err := factory.RecordSystemMemUsage(ctx, percentageMem); err != nil { + logger.Log(ctx, log.LevelWarn, "error recording memory gauge", log.Err(err)) + } +} diff --git a/tracing/obfuscation.go b/tracing/obfuscation.go new file mode 100644 index 0000000..ab99b25 --- /dev/null +++ b/tracing/obfuscation.go @@ -0,0 +1,264 @@ +package tracing + +import ( + "bytes" + "crypto/hmac" + "crypto/rand" + "crypto/sha256" + "encoding/hex" + "encoding/json" + "fmt" + "regexp" + + cn "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/redaction" +) + +// RedactionAction defines how sensitive values are transformed. +type RedactionAction string + +const ( + // RedactionMask replaces a sensitive value with the configured mask. + RedactionMask RedactionAction = "mask" + // RedactionHash replaces a sensitive value with an HMAC-SHA256 hash. + RedactionHash RedactionAction = "hash" + // RedactionDrop removes a sensitive field from the output. + RedactionDrop RedactionAction = "drop" +) + +// RedactionRule matches fields/paths and applies a redaction action. +type RedactionRule struct { + FieldPattern string + PathPattern string + Action RedactionAction + + fieldRegex *regexp.Regexp + pathRegex *regexp.Regexp +} + +// hmacKeySize is the byte length of the HMAC key generated for each Redactor. +const hmacKeySize = 32 + +// Redactor applies ordered redaction rules to structured payloads. +type Redactor struct { + rules []RedactionRule + maskValue string + hmacKey []byte // per-instance key used by HMAC-SHA256 hashing +} + +// NewDefaultRedactor builds a mask-based redactor from default sensitive fields. +func NewDefaultRedactor() *Redactor { + fields := redaction.DefaultSensitiveFields() + + rules := make([]RedactionRule, 0, len(fields)) + for _, field := range fields { + rules = append(rules, RedactionRule{FieldPattern: `(?i)^` + regexp.QuoteMeta(field) + `$`, Action: RedactionMask}) + } + + r, err := NewRedactor(rules, cn.ObfuscatedValue) + if err != nil { + // Rule compilation failed unexpectedly. Return a conservative always-mask + // redactor rather than a no-rules redactor that would leak everything. + return NewAlwaysMaskRedactor() + } + + return r +} + +// NewAlwaysMaskRedactor returns a conservative redactor that treats ALL fields as sensitive. +// This is used as a safe fallback when normal redactor construction fails, ensuring +// no data leaks through in fail-open scenarios. +func NewAlwaysMaskRedactor() *Redactor { + return &Redactor{ + rules: []RedactionRule{ + { + // Match every field name + FieldPattern: ".*", + fieldRegex: regexp.MustCompile(".*"), + Action: RedactionMask, + }, + }, + maskValue: cn.ObfuscatedValue, + } +} + +// NewRedactor compiles rules and returns a configured redactor. +func NewRedactor(rules []RedactionRule, maskValue string) (*Redactor, error) { + if maskValue == "" { + maskValue = cn.ObfuscatedValue + } + + compiled := make([]RedactionRule, 0, len(rules)) + for i := range rules { + rule := rules[i] + if rule.Action == "" { + rule.Action = RedactionMask + } + + if rule.FieldPattern != "" { + re, err := regexp.Compile(rule.FieldPattern) + if err != nil { + return nil, fmt.Errorf("invalid redaction field pattern at index %d: %w", i, err) + } + + rule.fieldRegex = re + } + + if rule.PathPattern != "" { + re, err := regexp.Compile(rule.PathPattern) + if err != nil { + return nil, fmt.Errorf("invalid redaction path pattern at index %d: %w", i, err) + } + + rule.pathRegex = re + } + + compiled = append(compiled, rule) + } + + key := make([]byte, hmacKeySize) + if _, err := rand.Read(key); err != nil { + return nil, fmt.Errorf("failed to generate HMAC key: %w", err) + } + + return &Redactor{rules: compiled, maskValue: maskValue, hmacKey: key}, nil +} + +func (r *Redactor) actionFor(path, fieldName string) (RedactionAction, bool) { + if r == nil { + return "", false + } + + for i := range r.rules { + rule := r.rules[i] + pathMatch := true + + var fieldMatch bool + if rule.fieldRegex != nil { + fieldMatch = rule.fieldRegex.MatchString(fieldName) + } else { + fieldMatch = redaction.IsSensitiveField(fieldName) + } + + if rule.pathRegex != nil { + pathMatch = rule.pathRegex.MatchString(path) + } + + if fieldMatch && pathMatch { + return rule.Action, true + } + } + + return "", false +} + +// redactValue applies the first matching redaction rule to a field value. +// It returns the (possibly transformed) value, whether the field should be dropped, +// and whether any redaction rule was applied (so the caller can skip expensive comparison). +func (r *Redactor) redactValue(path, fieldName string, value any) (redacted any, drop bool, applied bool) { + action, ok := r.actionFor(path, fieldName) + if !ok { + return value, false, false + } + + switch action { + case RedactionDrop: + return nil, true, true + case RedactionHash: + return r.hashString(fmt.Sprint(value)), false, true + case RedactionMask: + fallthrough + default: + return r.maskValue, false, true + } +} + +// hashString computes an HMAC-SHA256 of v using the Redactor's per-instance key. +// The result is a hex-encoded string prefixed with "sha256:" for identification. +// Using HMAC prevents rainbow-table attacks against low-entropy PII. +func (r *Redactor) hashString(v string) string { + if len(r.hmacKey) > 0 { + mac := hmac.New(sha256.New, r.hmacKey) + mac.Write([]byte(v)) + + return "sha256:" + hex.EncodeToString(mac.Sum(nil)) + } + + // Fallback for zero-key edge case (should not happen with proper construction). + h := sha256.Sum256([]byte(v)) + + return fmt.Sprintf("sha256:%x", h) +} + +// obfuscateStructFields recursively obfuscates sensitive fields in a struct or map. +func obfuscateStructFields(data any, path string, r *Redactor) any { + switch v := data.(type) { + case map[string]any: + result := make(map[string]any, len(v)) + + for key, value := range v { + childPath := key + if path != "" { + childPath = path + "." + key + } + + if r != nil { + redacted, drop, applied := r.redactValue(childPath, key, value) + if drop { + continue + } + + if applied { + result[key] = redacted + continue + } + } + + result[key] = obfuscateStructFields(value, childPath, r) + } + + return result + + case []any: + result := make([]any, len(v)) + + for i, item := range v { + childPath := fmt.Sprintf("%s[%d]", path, i) + result[i] = obfuscateStructFields(item, childPath, r) + } + + return result + + default: + return data + } +} + +// ObfuscateStruct applies obfuscation to a struct and returns the obfuscated data. +// This is a utility function that can be used independently of OpenTelemetry spans. +func ObfuscateStruct(valueStruct any, r *Redactor) (any, error) { + if valueStruct == nil || r == nil { + return valueStruct, nil + } + + // Convert to JSON and back to get a generic representation. + // Using any (not map[string]any) to handle arrays, primitives, and objects. + jsonBytes, err := json.Marshal(valueStruct) + if err != nil { + return nil, err + } + + var data any + + decoder := json.NewDecoder(bytes.NewReader(jsonBytes)) + decoder.UseNumber() + + if err := decoder.Decode(&data); err != nil { + return nil, err + } + + // Zero the intermediate buffer to minimize sensitive data lifetime in memory + clear(jsonBytes) + + return obfuscateStructFields(data, "", r), nil +} diff --git a/tracing/otel.go b/tracing/otel.go new file mode 100644 index 0000000..df6dab2 --- /dev/null +++ b/tracing/otel.go @@ -0,0 +1,955 @@ +package tracing + +import ( + "bytes" + "context" + "encoding/json" + "errors" + "fmt" + "maps" + "net/http" + "os" + "reflect" + "strconv" + "strings" + "unicode/utf8" + + observability "github.com/LerianStudio/lib-observability" + "github.com/LerianStudio/lib-observability/assert" + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "github.com/LerianStudio/lib-observability/redaction" + "github.com/gofiber/fiber/v2" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/codes" + "go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc" + "go.opentelemetry.io/otel/exporters/otlp/otlpmetric/otlpmetricgrpc" + "go.opentelemetry.io/otel/exporters/otlp/otlptrace" + "go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc" + "go.opentelemetry.io/otel/log/global" + "go.opentelemetry.io/otel/metric" + "go.opentelemetry.io/otel/propagation" + sdklog "go.opentelemetry.io/otel/sdk/log" + sdkmetric "go.opentelemetry.io/otel/sdk/metric" + sdkresource "go.opentelemetry.io/otel/sdk/resource" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + semconv "go.opentelemetry.io/otel/semconv/v1.34.0" + "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc/metadata" +) + +const ( + maxSpanAttributeStringLength = 4096 + maxAttributeDepth = 32 + maxAttributeCount = 128 + defaultAttrPrefix = "value" +) + +var ( + // ErrNilTelemetryLogger is returned when telemetry config has no logger. + ErrNilTelemetryLogger = errors.New("telemetry config logger cannot be nil") + // ErrEmptyEndpoint is returned when telemetry is enabled without exporter endpoint. + ErrEmptyEndpoint = errors.New("collector exporter endpoint cannot be empty when telemetry is enabled") + // ErrNilTelemetry is returned when a telemetry method receives a nil receiver. + ErrNilTelemetry = errors.New("telemetry instance is nil") + // ErrNilShutdown is returned when telemetry shutdown handlers are unavailable. + ErrNilShutdown = errors.New("telemetry shutdown function is nil") + // ErrNilProvider is returned when ApplyGlobals is called with nil providers. + ErrNilProvider = errors.New("telemetry providers must not be nil when applying globals") +) + +// TelemetryConfig configures tracing, metrics, logging, and propagation behavior. +type TelemetryConfig struct { + LibraryName string + ServiceName string + ServiceVersion string + DeploymentEnv string + CollectorExporterEndpoint string + EnableTelemetry bool + InsecureExporter bool + Logger log.Logger + Propagator propagation.TextMapPropagator + Redactor *Redactor +} + +// Telemetry holds configured OpenTelemetry providers and lifecycle handlers. +type Telemetry struct { + TelemetryConfig + TracerProvider *sdktrace.TracerProvider + MeterProvider *sdkmetric.MeterProvider + LoggerProvider *sdklog.LoggerProvider + MetricsFactory *metrics.MetricsFactory + shutdown func() + shutdownCtx func(context.Context) error +} + +// NewTelemetry builds telemetry providers and exporters from configuration. +func NewTelemetry(cfg TelemetryConfig) (*Telemetry, error) { + if cfg.Logger == nil { + return nil, ErrNilTelemetryLogger + } + + if cfg.Propagator == nil { + cfg.Propagator = propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}) + } + + if cfg.Redactor == nil { + cfg.Redactor = NewDefaultRedactor() + } + + normalizeEndpoint(&cfg) + normalizeEndpointEnvVars() + + if cfg.EnableTelemetry && strings.TrimSpace(cfg.CollectorExporterEndpoint) == "" { + return handleEmptyEndpoint(cfg) + } + + ctx := context.Background() + + if !cfg.EnableTelemetry { + cfg.Logger.Log(ctx, log.LevelWarn, "Telemetry disabled") + + return newNoopTelemetry(cfg) + } + + normalizedDeploymentEnv := strings.ToLower(strings.TrimSpace(cfg.DeploymentEnv)) + if cfg.InsecureExporter && normalizedDeploymentEnv != "" && + normalizedDeploymentEnv != "development" && normalizedDeploymentEnv != "local" { + cfg.Logger.Log(ctx, log.LevelWarn, + "InsecureExporter is enabled in non-development environment", + log.String("environment", normalizedDeploymentEnv)) + } + + // Security policy: insecure OTEL exporter enforcement in production. + // In production environments, InsecureExporter must not be used unless + // the ALLOW_INSECURE_OTEL env var is set with a justification. + if cfg.InsecureExporter && isStrictEnvironment(normalizedDeploymentEnv) { + if os.Getenv("ALLOW_INSECURE_OTEL") == "" { + return nil, fmt.Errorf("otel new: insecure exporter detected in %q environment (use https:// endpoint or set ALLOW_INSECURE_OTEL=\"reason\")", + normalizedDeploymentEnv) + } + } + + return initExporters(ctx, cfg) +} + +// normalizeEndpoint strips URL scheme from the collector endpoint and infers security mode. +// gRPC WithEndpoint() expects host:port, not a full URL. +// Consumers commonly pass OTEL_EXPORTER_OTLP_ENDPOINT as "http://host:4317". +func normalizeEndpoint(cfg *TelemetryConfig) { + ep := strings.TrimSpace(cfg.CollectorExporterEndpoint) + if ep == "" { + return + } + + switch { + case strings.HasPrefix(ep, "http://"): + cfg.CollectorExporterEndpoint = strings.TrimPrefix(ep, "http://") + cfg.InsecureExporter = true + case strings.HasPrefix(ep, "https://"): + cfg.CollectorExporterEndpoint = strings.TrimPrefix(ep, "https://") + default: + // No scheme — assume insecure (common in k8s internal comms). + cfg.InsecureExporter = true + } +} + +// normalizeEndpointEnvVars ensures OTEL exporter endpoint environment variables +// contain a URL scheme. The OTEL SDK's envconfig reads these via url.Parse(), +// which fails on bare "host:port" values. Adding "http://" prevents noisy +// "parse url" errors from the SDK's internal logger. +func normalizeEndpointEnvVars() { + for _, key := range []string{ + "OTEL_EXPORTER_OTLP_ENDPOINT", + "OTEL_EXPORTER_OTLP_TRACES_ENDPOINT", + "OTEL_EXPORTER_OTLP_METRICS_ENDPOINT", + } { + v := strings.TrimSpace(os.Getenv(key)) + if v == "" || strings.HasPrefix(v, "http://") || strings.HasPrefix(v, "https://") { + continue + } + + _ = os.Setenv(key, "http://"+v) + } +} + +// handleEmptyEndpoint handles the case where telemetry is enabled but the collector +// endpoint is empty, returning noop providers installed as globals. +func handleEmptyEndpoint(cfg TelemetryConfig) (*Telemetry, error) { + cfg.Logger.Log(context.Background(), log.LevelWarn, + "Telemetry enabled but collector endpoint is empty; falling back to noop providers") + + tl, noopErr := newNoopTelemetry(cfg) + if noopErr != nil { + return nil, noopErr + } + + // Set noop providers as globals so downstream libraries (e.g. otelfiber) + // do not create real gRPC exporters that leak background goroutines. + _ = tl.ApplyGlobals() + + return tl, ErrEmptyEndpoint +} + +// initExporters creates OTLP exporters, providers, and a metrics factory, +// rolling back partial allocations on failure. +func initExporters(ctx context.Context, cfg TelemetryConfig) (*Telemetry, error) { + r := cfg.newResource() + + // Track all allocated resources for rollback if a later step fails. + var cleanups []shutdownable + + tExp, err := cfg.newTracerExporter(ctx) + if err != nil { + return nil, fmt.Errorf("can't initialize tracer exporter: %w", err) + } + + cleanups = append(cleanups, tExp) + + mExp, err := cfg.newMetricExporter(ctx) + if err != nil { + shutdownAll(ctx, cleanups) + + return nil, fmt.Errorf("can't initialize metric exporter: %w", err) + } + + cleanups = append(cleanups, mExp) + + lExp, err := cfg.newLoggerExporter(ctx) + if err != nil { + shutdownAll(ctx, cleanups) + + return nil, fmt.Errorf("can't initialize logger exporter: %w", err) + } + + cleanups = append(cleanups, lExp) + + mp := cfg.newMeterProvider(r, mExp) + cleanups = append(cleanups, mp) + + tp := cfg.newTracerProvider(r, tExp) + cleanups = append(cleanups, tp) + + lp := cfg.newLoggerProvider(r, lExp) + cleanups = append(cleanups, lp) + + metricsFactory, err := metrics.NewMetricsFactory(mp.Meter(cfg.LibraryName), cfg.Logger) + if err != nil { + shutdownAll(ctx, cleanups) + + return nil, err + } + + shutdown, shutdownCtx := buildShutdownHandlers(cfg.Logger, mp, tp, lp, tExp, mExp, lExp) + + return &Telemetry{ + TelemetryConfig: cfg, + TracerProvider: tp, + MeterProvider: mp, + LoggerProvider: lp, + MetricsFactory: metricsFactory, + shutdown: shutdown, + shutdownCtx: shutdownCtx, + }, nil +} + +// newNoopTelemetry creates a Telemetry instance with no-op providers (no exporters). +// This is used when telemetry is disabled or when the collector endpoint is empty, +// ensuring global OTEL providers are safe no-ops that do not leak goroutines. +func newNoopTelemetry(cfg TelemetryConfig) (*Telemetry, error) { + mp := sdkmetric.NewMeterProvider() + tp := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(RedactingAttrBagSpanProcessor{Redactor: cfg.Redactor})) + lp := sdklog.NewLoggerProvider() + + metricsFactory, err := metrics.NewMetricsFactory(mp.Meter(cfg.LibraryName), cfg.Logger) + if err != nil { + return nil, err + } + + return &Telemetry{ + TelemetryConfig: cfg, + TracerProvider: tp, + MeterProvider: mp, + LoggerProvider: lp, + MetricsFactory: metricsFactory, + shutdown: func() {}, + shutdownCtx: func(context.Context) error { return nil }, + }, nil +} + +// shutdownAll performs best-effort shutdown of all allocated components. +// Used during NewTelemetry to roll back partial allocations on failure. +func shutdownAll(ctx context.Context, components []shutdownable) { + for _, c := range components { + if isNilShutdownable(c) { + continue + } + + _ = c.Shutdown(ctx) + } +} + +// ApplyGlobals sets this instance as the process-global OTEL providers/propagator. +// Returns an error if any required provider is nil. +func (tl *Telemetry) ApplyGlobals() error { + if tl == nil { + return ErrNilTelemetry + } + + if tl.TracerProvider == nil || tl.MeterProvider == nil || tl.Propagator == nil { + return ErrNilProvider + } + + otel.SetTracerProvider(tl.TracerProvider) + otel.SetMeterProvider(tl.MeterProvider) + + if tl.LoggerProvider != nil { + global.SetLoggerProvider(tl.LoggerProvider) + } + + otel.SetTextMapPropagator(tl.Propagator) + + return nil +} + +// Tracer returns a tracer from this telemetry instance. +func (tl *Telemetry) Tracer(name string) (trace.Tracer, error) { + if tl == nil || tl.TracerProvider == nil { + // Logger is intentionally nil: nil/incomplete Telemetry means no reliable logger available. + asserter := assert.New(context.Background(), nil, "tracing", "Tracer") + _ = asserter.NoError(context.Background(), ErrNilTelemetry, "telemetry tracer provider is nil") + + return nil, ErrNilTelemetry + } + + return tl.TracerProvider.Tracer(name), nil +} + +// Meter returns a meter from this telemetry instance. +func (tl *Telemetry) Meter(name string) (metric.Meter, error) { + if tl == nil || tl.MeterProvider == nil { + // Logger is intentionally nil: nil/incomplete Telemetry means no reliable logger available. + asserter := assert.New(context.Background(), nil, "tracing", "Meter") + _ = asserter.NoError(context.Background(), ErrNilTelemetry, "telemetry meter provider is nil") + + return nil, ErrNilTelemetry + } + + return tl.MeterProvider.Meter(name), nil +} + +// ShutdownTelemetry shuts down telemetry components using background context. +func (tl *Telemetry) ShutdownTelemetry() { + if tl == nil { + return + } + + if err := tl.ShutdownTelemetryWithContext(context.Background()); err != nil { + asserter := assert.New(context.Background(), tl.Logger, "tracing", "ShutdownTelemetry") + _ = asserter.NoError(context.Background(), err, "telemetry shutdown failed") + + return + } +} + +// ShutdownTelemetryWithContext shuts down telemetry components with caller context. +func (tl *Telemetry) ShutdownTelemetryWithContext(ctx context.Context) error { + if tl == nil { + // Logger is intentionally nil: nil receiver means no Telemetry instance to extract logger from. + asserter := assert.New(context.Background(), nil, "tracing", "ShutdownTelemetryWithContext") + _ = asserter.NoError(context.Background(), ErrNilTelemetry, "cannot shutdown nil telemetry") + + return ErrNilTelemetry + } + + if tl.shutdownCtx != nil { + return tl.shutdownCtx(ctx) + } + + if tl.shutdown != nil { + tl.shutdown() + return nil + } + + asserter := assert.New(context.Background(), tl.Logger, "tracing", "ShutdownTelemetryWithContext") + _ = asserter.NoError(context.Background(), ErrNilShutdown, "cannot shutdown telemetry without configured shutdown function") + + return ErrNilShutdown +} + +func (tl *TelemetryConfig) newResource() *sdkresource.Resource { + return sdkresource.NewWithAttributes( + semconv.SchemaURL, + semconv.ServiceName(tl.ServiceName), + semconv.ServiceVersion(tl.ServiceVersion), + semconv.DeploymentEnvironmentName(tl.DeploymentEnv), + semconv.TelemetrySDKName(constant.TelemetrySDKName), + semconv.TelemetrySDKLanguageGo, + ) +} + +func (tl *TelemetryConfig) newLoggerExporter(ctx context.Context) (*otlploggrpc.Exporter, error) { + opts := []otlploggrpc.Option{otlploggrpc.WithEndpoint(tl.CollectorExporterEndpoint)} + if tl.InsecureExporter { + opts = append(opts, otlploggrpc.WithInsecure()) + } + + return otlploggrpc.New(ctx, opts...) +} + +func (tl *TelemetryConfig) newMetricExporter(ctx context.Context) (*otlpmetricgrpc.Exporter, error) { + opts := []otlpmetricgrpc.Option{otlpmetricgrpc.WithEndpoint(tl.CollectorExporterEndpoint)} + if tl.InsecureExporter { + opts = append(opts, otlpmetricgrpc.WithInsecure()) + } + + return otlpmetricgrpc.New(ctx, opts...) +} + +func (tl *TelemetryConfig) newTracerExporter(ctx context.Context) (*otlptrace.Exporter, error) { + opts := []otlptracegrpc.Option{otlptracegrpc.WithEndpoint(tl.CollectorExporterEndpoint)} + if tl.InsecureExporter { + opts = append(opts, otlptracegrpc.WithInsecure()) + } + + return otlptracegrpc.New(ctx, opts...) +} + +func (tl *TelemetryConfig) newLoggerProvider(rsc *sdkresource.Resource, exp *otlploggrpc.Exporter) *sdklog.LoggerProvider { + bp := sdklog.NewBatchProcessor(exp) + return sdklog.NewLoggerProvider(sdklog.WithResource(rsc), sdklog.WithProcessor(bp)) +} + +func (tl *TelemetryConfig) newMeterProvider(res *sdkresource.Resource, exp *otlpmetricgrpc.Exporter) *sdkmetric.MeterProvider { + return sdkmetric.NewMeterProvider( + sdkmetric.WithResource(res), + sdkmetric.WithReader(sdkmetric.NewPeriodicReader(exp)), + ) +} + +func (tl *TelemetryConfig) newTracerProvider(rsc *sdkresource.Resource, exp *otlptrace.Exporter) *sdktrace.TracerProvider { + return sdktrace.NewTracerProvider( + sdktrace.WithResource(rsc), + sdktrace.WithSpanProcessor(RedactingAttrBagSpanProcessor{Redactor: tl.Redactor}), + sdktrace.WithBatcher(exp), + ) +} + +type shutdownable interface { + Shutdown(ctx context.Context) error +} + +// isNilShutdownable checks for both untyped nil and interface-wrapped typed nil +// (e.g., a concrete pointer that is nil but stored in a shutdownable interface). +func isNilShutdownable(s shutdownable) bool { + if s == nil { + return true + } + + v := reflect.ValueOf(s) + + return v.Kind() == reflect.Ptr && v.IsNil() +} + +func buildShutdownHandlers(l log.Logger, components ...shutdownable) (func(), func(context.Context) error) { + shutdown := func() { + ctx := context.Background() + + for _, c := range components { + if isNilShutdownable(c) { + continue + } + + if err := c.Shutdown(ctx); err != nil { + l.Log(ctx, log.LevelError, "telemetry shutdown error", log.Err(err)) + } + } + } + + shutdownCtx := func(ctx context.Context) error { + var errs []error + + for _, c := range components { + if isNilShutdownable(c) { + continue + } + + if err := c.Shutdown(ctx); err != nil { + errs = append(errs, err) + } + } + + return errors.Join(errs...) + } + + return shutdown, shutdownCtx +} + +// isNilSpan checks for both untyped nil and interface-wrapped typed nil values. +// trace.Span is an interface, so a concrete pointer that is nil but stored in +// a trace.Span variable would pass a simple `span == nil` check. +func isNilSpan(span trace.Span) bool { + if span == nil { + return true + } + + v := reflect.ValueOf(span) + + return v.Kind() == reflect.Ptr && v.IsNil() +} + +// maxSpanErrorLength is the maximum length for error messages written to span status/events. +const maxSpanErrorLength = 1024 + +// sanitizeSpanMessage sanitizes an error message for span output: +// - Truncates to a safe maximum length +// - Strips common sensitive-looking patterns (bearer tokens, passwords in URLs) +func sanitizeSpanMessage(msg string) string { + // Strip common sensitive patterns + for _, pattern := range []struct{ prefix, replacement string }{ + {"Bearer ", "Bearer [REDACTED]"}, + {"Basic ", "Basic [REDACTED]"}, + } { + if idx := strings.Index(msg, pattern.prefix); idx >= 0 { + end := idx + len(pattern.prefix) + // Find the end of the token (next space or end of string) + tokenEnd := strings.IndexByte(msg[end:], ' ') + if tokenEnd < 0 { + msg = msg[:idx] + pattern.replacement + } else { + msg = msg[:idx] + pattern.replacement + msg[end+tokenEnd:] + } + } + } + + if len(msg) > maxSpanErrorLength { + msg = msg[:maxSpanErrorLength] + // Ensure valid UTF-8 after truncation + if !utf8.ValidString(msg) { + msg = strings.ToValidUTF8(msg, "") + } + } + + return msg +} + +// HandleSpanBusinessErrorEvent records a business-error event on a span. +func HandleSpanBusinessErrorEvent(span trace.Span, eventName string, err error) { + if isNilSpan(span) || err == nil { + return + } + + span.AddEvent(eventName, trace.WithAttributes(attribute.String("error", sanitizeSpanMessage(err.Error())))) +} + +// HandleSpanEvent records a generic event with optional attributes on a span. +func HandleSpanEvent(span trace.Span, eventName string, attributes ...attribute.KeyValue) { + if isNilSpan(span) { + return + } + + span.AddEvent(eventName, trace.WithAttributes(attributes...)) +} + +// HandleSpanError marks a span as failed and records the error. +func HandleSpanError(span trace.Span, message string, err error) { + if isNilSpan(span) || err == nil { + return + } + + // Build status message: avoid malformed ": " when message is empty + statusMsg := sanitizeSpanMessage(err.Error()) + if message != "" { + statusMsg = message + ": " + statusMsg + } + + span.SetStatus(codes.Error, statusMsg) + span.RecordError(err) +} + +// SetSpanAttributesFromValue flattens a value and sets resulting attributes on a span. +func SetSpanAttributesFromValue(span trace.Span, prefix string, value any, r *Redactor) error { + if isNilSpan(span) { + return nil + } + + attrs, err := BuildAttributesFromValue(prefix, value, r) + if err != nil { + return err + } + + if len(attrs) > 0 { + span.SetAttributes(attrs...) + } + + return nil +} + +// BuildAttributesFromValue flattens a value into OTEL attributes with optional redaction. +func BuildAttributesFromValue(prefix string, value any, r *Redactor) ([]attribute.KeyValue, error) { + if value == nil { + return nil, nil + } + + processed := value + + if r != nil { + var err error + + processed, err = ObfuscateStruct(value, r) + if err != nil { + return nil, err + } + } + + b, err := json.Marshal(processed) + if err != nil { + return nil, err + } + + // Use json.NewDecoder with UseNumber() to preserve numeric precision. + // This avoids float64 rounding for large integers (e.g., financial amounts). + var decoded any + + dec := json.NewDecoder(bytes.NewReader(b)) + dec.UseNumber() + + if err := dec.Decode(&decoded); err != nil { + return nil, err + } + + // Use fallback prefix for top-level scalars/slices to avoid empty keys. + effectivePrefix := sanitizeUTF8String(prefix) + if effectivePrefix == "" { + switch decoded.(type) { + case map[string]any: + // Maps expand their own keys; empty prefix is fine. + case []any: + effectivePrefix = "item" + default: + effectivePrefix = defaultAttrPrefix + } + } + + attrs := make([]attribute.KeyValue, 0, 16) + flattenAttributes(&attrs, effectivePrefix, decoded, 0) + + return attrs, nil +} + +func flattenAttributes(attrs *[]attribute.KeyValue, prefix string, value any, depth int) { + if depth >= maxAttributeDepth { + return + } + + if len(*attrs) >= maxAttributeCount { + return + } + + switch v := value.(type) { + case map[string]any: + flattenMap(attrs, prefix, v, depth) + case []any: + flattenSlice(attrs, prefix, v, depth) + case string: + s := truncateUTF8(sanitizeUTF8String(v), maxSpanAttributeStringLength) + *attrs = append(*attrs, attribute.String(resolveKey(prefix, defaultAttrPrefix), s)) + case float64: + *attrs = append(*attrs, attribute.Float64(resolveKey(prefix, defaultAttrPrefix), v)) + case bool: + *attrs = append(*attrs, attribute.Bool(resolveKey(prefix, defaultAttrPrefix), v)) + case json.Number: + flattenJSONNumber(attrs, prefix, v) + case nil: + return + default: + *attrs = append(*attrs, attribute.String(resolveKey(prefix, defaultAttrPrefix), sanitizeUTF8String(fmt.Sprint(v)))) + } +} + +// resolveKey returns prefix if non-empty, otherwise falls back to fallback. +func resolveKey(prefix, fallback string) string { + if prefix == "" { + return fallback + } + + return prefix +} + +func flattenMap(attrs *[]attribute.KeyValue, prefix string, m map[string]any, depth int) { + for key, child := range m { + next := sanitizeUTF8String(key) + if prefix != "" { + next = prefix + "." + next + } + + flattenAttributes(attrs, next, child, depth+1) + } +} + +func flattenSlice(attrs *[]attribute.KeyValue, prefix string, s []any, depth int) { + idxKey := resolveKey(prefix, "item") + for i, child := range s { + next := idxKey + "." + strconv.Itoa(i) + flattenAttributes(attrs, next, child, depth+1) + } +} + +func flattenJSONNumber(attrs *[]attribute.KeyValue, prefix string, v json.Number) { + key := resolveKey(prefix, defaultAttrPrefix) + + // Try Int64 first for precision, fall back to Float64 + if i, err := v.Int64(); err == nil { + *attrs = append(*attrs, attribute.Int64(key, i)) + } else if f, err := v.Float64(); err == nil { + *attrs = append(*attrs, attribute.Float64(key, f)) + } else { + *attrs = append(*attrs, attribute.String(key, string(v))) + } +} + +// truncateUTF8 truncates a string to at most maxBytes, ensuring the result is valid UTF-8. +// If the byte-slice cut lands in the middle of a multi-byte rune, incomplete trailing bytes +// are trimmed so the result is always valid. +func truncateUTF8(s string, maxBytes int) string { + if len(s) <= maxBytes { + return s + } + + s = s[:maxBytes] + + // If the truncation produced invalid UTF-8, trim the trailing incomplete rune + for len(s) > 0 && !utf8.ValidString(s) { + s = s[:len(s)-1] + } + + return s +} + +// SetSpanAttributeForParam adds a request parameter attribute to the current context bag. +// Sensitive parameter names (as determined by redaction.IsSensitiveField) are masked. +func SetSpanAttributeForParam(c *fiber.Ctx, param, value, entityName string) { + if c == nil { + return + } + + spanAttrKey := "app.request." + param + if entityName != "" && param == "id" { + spanAttrKey = "app.request." + entityName + "_id" + } + + // Mask value if the parameter name is considered sensitive + attrValue := value + if redaction.IsSensitiveField(param) { + attrValue = "[REDACTED]" + } + + c.SetUserContext(observability.ContextWithSpanAttributes(c.UserContext(), attribute.String(spanAttrKey, attrValue))) +} + +// InjectTraceContext injects trace context into a generic text map carrier. +func InjectTraceContext(ctx context.Context, carrier propagation.TextMapCarrier) { + if carrier == nil { + return + } + + otel.GetTextMapPropagator().Inject(ctx, carrier) +} + +// ExtractTraceContext extracts trace context from a generic text map carrier. +func ExtractTraceContext(ctx context.Context, carrier propagation.TextMapCarrier) context.Context { + if carrier == nil { + return ctx + } + + return otel.GetTextMapPropagator().Extract(ctx, carrier) +} + +// InjectHTTPContext injects trace headers into HTTP headers. +func InjectHTTPContext(ctx context.Context, headers http.Header) { + if headers == nil { + return + } + + InjectTraceContext(ctx, propagation.HeaderCarrier(headers)) +} + +// ExtractHTTPContext extracts trace headers from a Fiber request. +func ExtractHTTPContext(ctx context.Context, c *fiber.Ctx) context.Context { + if c == nil { + return ctx + } + + carrier := propagation.HeaderCarrier{} + for key, value := range c.Request().Header.All() { + carrier.Set(string(key), string(value)) + } + + return ExtractTraceContext(ctx, carrier) +} + +// InjectGRPCContext injects trace context into gRPC metadata. +func InjectGRPCContext(ctx context.Context, md metadata.MD) metadata.MD { + if md == nil { + md = metadata.New(nil) + } + + InjectTraceContext(ctx, propagation.HeaderCarrier(md)) + + if traceparentValues, exists := md[constant.HeaderTraceparentPascal]; exists && len(traceparentValues) > 0 { + md[constant.MetadataTraceparent] = traceparentValues + delete(md, constant.HeaderTraceparentPascal) + } + + if tracestateValues, exists := md[constant.HeaderTracestatePascal]; exists && len(tracestateValues) > 0 { + md[constant.MetadataTracestate] = tracestateValues + delete(md, constant.HeaderTracestatePascal) + } + + return md +} + +// ExtractGRPCContext extracts trace context from gRPC metadata. +func ExtractGRPCContext(ctx context.Context, md metadata.MD) context.Context { + if md == nil { + return ctx + } + + mdCopy := md.Copy() + + if traceparentValues, exists := mdCopy[constant.MetadataTraceparent]; exists && len(traceparentValues) > 0 { + mdCopy[constant.HeaderTraceparentPascal] = traceparentValues + delete(mdCopy, constant.MetadataTraceparent) + } + + if tracestateValues, exists := mdCopy[constant.MetadataTracestate]; exists && len(tracestateValues) > 0 { + mdCopy[constant.HeaderTracestatePascal] = tracestateValues + delete(mdCopy, constant.MetadataTracestate) + } + + return ExtractTraceContext(ctx, propagation.HeaderCarrier(mdCopy)) +} + +// InjectQueueTraceContext serializes trace context to string headers for queues. +func InjectQueueTraceContext(ctx context.Context) map[string]string { + carrier := propagation.HeaderCarrier{} + InjectTraceContext(ctx, carrier) + + headers := make(map[string]string, len(carrier)) + for k, v := range carrier { + if len(v) > 0 { + headers[k] = v[0] + } + } + + return headers +} + +// ExtractQueueTraceContext extracts trace context from queue string headers. +func ExtractQueueTraceContext(ctx context.Context, headers map[string]string) context.Context { + if headers == nil { + return ctx + } + + carrier := propagation.HeaderCarrier{} + for k, v := range headers { + carrier.Set(k, v) + } + + return ExtractTraceContext(ctx, carrier) +} + +// PrepareQueueHeaders merges base headers with propagated trace headers. +func PrepareQueueHeaders(ctx context.Context, baseHeaders map[string]any) map[string]any { + headers := make(map[string]any) + maps.Copy(headers, baseHeaders) + + traceHeaders := InjectQueueTraceContext(ctx) + for k, v := range traceHeaders { + headers[k] = v + } + + return headers +} + +// InjectTraceHeadersIntoQueue injects propagated trace headers into a mutable map. +func InjectTraceHeadersIntoQueue(ctx context.Context, headers *map[string]any) { + if headers == nil { + return + } + + if *headers == nil { + *headers = make(map[string]any) + } + + traceHeaders := InjectQueueTraceContext(ctx) + for k, v := range traceHeaders { + (*headers)[k] = v + } +} + +// ExtractTraceContextFromQueueHeaders extracts trace context from AMQP-style headers. +func ExtractTraceContextFromQueueHeaders(baseCtx context.Context, amqpHeaders map[string]any) context.Context { + if len(amqpHeaders) == 0 { + return baseCtx + } + + traceHeaders := make(map[string]string) + + for k, v := range amqpHeaders { + if str, ok := v.(string); ok { + traceHeaders[k] = str + } + } + + if len(traceHeaders) == 0 { + return baseCtx + } + + return ExtractQueueTraceContext(baseCtx, traceHeaders) +} + +// GetTraceIDFromContext returns the current span trace ID, or empty if unavailable. +func GetTraceIDFromContext(ctx context.Context) string { + span := trace.SpanFromContext(ctx) + + sc := span.SpanContext() + if !sc.IsValid() { + return "" + } + + return sc.TraceID().String() +} + +// GetTraceStateFromContext returns the current span tracestate, or empty if unavailable. +func GetTraceStateFromContext(ctx context.Context) string { + span := trace.SpanFromContext(ctx) + + sc := span.SpanContext() + if !sc.IsValid() { + return "" + } + + return sc.TraceState().String() +} + +func sanitizeUTF8String(s string) string { + if !utf8.ValidString(s) { + return strings.ToValidUTF8(s, "") + } + + return s +} + +// isStrictEnvironment returns true for production-like environments +// where insecure OTEL exporters must not be used. +func isStrictEnvironment(env string) bool { + switch env { + case "production", "prod": + return true + default: + return false + } +} diff --git a/tracing/processor.go b/tracing/processor.go new file mode 100644 index 0000000..826acf7 --- /dev/null +++ b/tracing/processor.go @@ -0,0 +1,92 @@ +package tracing + +import ( + "context" + "strings" + + observability "github.com/LerianStudio/lib-observability" + "go.opentelemetry.io/otel/attribute" + sdktrace "go.opentelemetry.io/otel/sdk/trace" +) + +// ---- SpanProcessor that applies the AttrBag to every new span ---- + +// AttrBagSpanProcessor copies request-scoped attributes from context into every span at start. +type AttrBagSpanProcessor struct{} + +// RedactingAttrBagSpanProcessor copies request attributes and applies redaction rules by key. +type RedactingAttrBagSpanProcessor struct { + Redactor *Redactor +} + +// OnStart applies request-scoped context attributes to newly started spans. +func (AttrBagSpanProcessor) OnStart(ctx context.Context, s sdktrace.ReadWriteSpan) { + if kv := observability.AttributesFromContext(ctx); len(kv) > 0 { + s.SetAttributes(kv...) + } +} + +// OnStart applies request-scoped attributes and redacts sensitive values before writing to span. +func (p RedactingAttrBagSpanProcessor) OnStart(ctx context.Context, s sdktrace.ReadWriteSpan) { + kv := observability.AttributesFromContext(ctx) + if len(kv) == 0 { + return + } + + if p.Redactor != nil { + kv = redactAttributesByKey(kv, p.Redactor) + } + + s.SetAttributes(kv...) +} + +// OnEnd is a no-op for this processor. +func (AttrBagSpanProcessor) OnEnd(sdktrace.ReadOnlySpan) {} + +// OnEnd is a no-op for this processor. +func (RedactingAttrBagSpanProcessor) OnEnd(sdktrace.ReadOnlySpan) {} + +// Shutdown is a no-op and always returns nil. +func (AttrBagSpanProcessor) Shutdown(context.Context) error { return nil } + +// Shutdown is a no-op and always returns nil. +func (RedactingAttrBagSpanProcessor) Shutdown(context.Context) error { return nil } + +// ForceFlush is a no-op and always returns nil. +func (AttrBagSpanProcessor) ForceFlush(context.Context) error { return nil } + +// ForceFlush is a no-op and always returns nil. +func (RedactingAttrBagSpanProcessor) ForceFlush(context.Context) error { return nil } + +func redactAttributesByKey(attrs []attribute.KeyValue, redactor *Redactor) []attribute.KeyValue { + if redactor == nil { + return attrs + } + + redacted := make([]attribute.KeyValue, 0, len(attrs)) + for _, attr := range attrs { + key := string(attr.Key) + + fieldName := key + if idx := strings.LastIndex(key, "."); idx >= 0 && idx+1 < len(key) { + fieldName = key[idx+1:] + } + + action, ok := redactor.actionFor(key, fieldName) + if !ok { + redacted = append(redacted, attr) + continue + } + + switch action { + case RedactionDrop: + continue + case RedactionHash: + redacted = append(redacted, attribute.String(string(attr.Key), redactor.hashString(attr.Value.Emit()))) + default: + redacted = append(redacted, attribute.String(string(attr.Key), redactor.maskValue)) + } + } + + return redacted +} diff --git a/zap/injector.go b/zap/injector.go new file mode 100644 index 0000000..7662c9d --- /dev/null +++ b/zap/injector.go @@ -0,0 +1,153 @@ +package zap + +import ( + "errors" + "fmt" + "os" + "strings" + + "go.opentelemetry.io/contrib/bridges/otelzap" + "go.uber.org/zap" + "go.uber.org/zap/zapcore" +) + +const ( + callerSkipFrames = 1 + encodingConsole = "console" +) + +// Environment controls the baseline logger profile. +type Environment string + +const ( + // EnvironmentProduction enables production-safe logging defaults. + EnvironmentProduction Environment = "production" + // EnvironmentStaging enables staging-safe logging defaults. + EnvironmentStaging Environment = "staging" + // EnvironmentUAT enables UAT-safe logging defaults. + EnvironmentUAT Environment = "uat" + // EnvironmentDevelopment enables verbose development logging defaults. + EnvironmentDevelopment Environment = "development" + // EnvironmentLocal enables verbose local-development logging defaults. + EnvironmentLocal Environment = "local" +) + +// Config contains all required logger initialization inputs. +type Config struct { + Environment Environment + Level string + OTelLibraryName string +} + +func (c Config) validate() error { + if c.OTelLibraryName == "" { + return errors.New("OTelLibraryName is required") + } + + switch c.Environment { + case EnvironmentProduction, EnvironmentStaging, EnvironmentUAT, EnvironmentDevelopment, EnvironmentLocal: + return nil + default: + return fmt.Errorf("invalid environment %q", c.Environment) + } +} + +// New creates a structured logger from the given configuration. +// +// The returned Logger implements log.Logger and stores the runtime-adjustable +// level handle internally. Use Logger.Level() to access it. +func New(cfg Config) (*Logger, error) { + if err := cfg.validate(); err != nil { + return nil, fmt.Errorf("invalid zap config: %w", err) + } + + baseConfig := buildConfigByEnvironment(cfg.Environment) + + level, err := resolveLevel(cfg) + if err != nil { + return nil, err + } + + baseConfig.Level = level + baseConfig.DisableStacktrace = true + + coreOptions := []zap.Option{ + zap.AddCallerSkip(callerSkipFrames), + zap.WrapCore(func(core zapcore.Core) zapcore.Core { + return zapcore.NewTee(core, otelzap.NewCore(cfg.OTelLibraryName)) + }), + } + + built, err := baseConfig.Build(coreOptions...) + if err != nil { + return nil, fmt.Errorf("failed to build logger: %w", err) + } + + return &Logger{ + logger: built, + atomicLevel: level, + consoleEncoding: baseConfig.Encoding == encodingConsole, + }, nil +} + +func resolveLevel(cfg Config) (zap.AtomicLevel, error) { + levelStr := cfg.Level + if strings.TrimSpace(levelStr) == "" { + levelStr = strings.TrimSpace(os.Getenv("LOG_LEVEL")) + } + + if levelStr != "" { + var parsed zapcore.Level + if err := parsed.Set(levelStr); err != nil { + return zap.AtomicLevel{}, fmt.Errorf("invalid level %q: %w", levelStr, err) + } + + return zap.NewAtomicLevelAt(parsed), nil + } + + if cfg.Environment == EnvironmentDevelopment || cfg.Environment == EnvironmentLocal { + return zap.NewAtomicLevelAt(zapcore.DebugLevel), nil + } + + return zap.NewAtomicLevelAt(zapcore.InfoLevel), nil +} + +func buildConfigByEnvironment(environment Environment) zap.Config { + encoding := resolveEncoding(environment) + + if environment == EnvironmentDevelopment || environment == EnvironmentLocal { + cfg := zap.NewDevelopmentConfig() + cfg.Encoding = encoding + cfg.EncoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder + cfg.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder + cfg.EncoderConfig.TimeKey = "timestamp" + + if encoding == encodingConsole { + cfg.EncoderConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder + } + + return cfg + } + + cfg := zap.NewProductionConfig() + cfg.Encoding = encoding + cfg.EncoderConfig.EncodeLevel = zapcore.CapitalLevelEncoder + cfg.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder + cfg.EncoderConfig.TimeKey = "timestamp" + + return cfg +} + +func resolveEncoding(environment Environment) string { + if enc := strings.TrimSpace(os.Getenv("LOG_ENCODING")); enc != "" { + if enc == "json" || enc == encodingConsole { + return enc + } + } + + if environment == EnvironmentDevelopment || environment == EnvironmentLocal { + return encodingConsole + } + + return "json" +} diff --git a/zap/zap.go b/zap/zap.go new file mode 100644 index 0000000..5f6f6ba --- /dev/null +++ b/zap/zap.go @@ -0,0 +1,296 @@ +package zap + +import ( + "context" + "fmt" + "strings" + "time" + + logpkg "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/redaction" + "github.com/LerianStudio/lib-observability/runtime" + "go.opentelemetry.io/otel/trace" + "go.uber.org/zap" + "go.uber.org/zap/zapcore" +) + +// Field is a typed structured logging field (zap alias kept for convenience methods). +type Field = zap.Field + +// Logger is a strict structured logger that implements log.Logger. +// +// It intentionally does not expose printf/line/fatal helpers. +type Logger struct { + logger *zap.Logger + atomicLevel zap.AtomicLevel + // consoleEncoding is true when the logger uses console encoding. + // When true, messages are sanitized to prevent CWE-117 log injection, + // since console encoding does not inherently escape control characters + // the way JSON encoding does. + consoleEncoding bool +} + +// Compile-time assertion: *Logger implements logpkg.Logger. +var _ logpkg.Logger = (*Logger)(nil) + +func (l *Logger) must() *zap.Logger { + if l == nil || l.logger == nil { + return zap.NewNop() + } + + return l.logger +} + +// --------------------------------------------------------------------------- +// log.Logger interface methods +// --------------------------------------------------------------------------- + +// Log implements log.Logger. It dispatches to the appropriate zap level. +// If ctx carries an active OpenTelemetry span, trace_id and span_id are +// automatically appended so logs correlate with distributed traces. +// +// Unknown levels are treated as LevelInfo (consistent with GoLogger policy). +func (l *Logger) Log(ctx context.Context, level logpkg.Level, msg string, fields ...logpkg.Field) { + zapFields := logFieldsToZap(fields) + + if ctx != nil { + if sc := trace.SpanFromContext(ctx).SpanContext(); sc.IsValid() { + zapFields = append(zapFields, + zap.String("trace_id", sc.TraceID().String()), + zap.String("span_id", sc.SpanID().String()), + ) + } + } + + // Sanitize message for console encoding (CWE-117 prevention). + // JSON encoding handles this via its built-in escaping. + safeMsg := l.sanitizeConsoleMsg(msg) + + switch level { + case logpkg.LevelDebug: + l.must().Debug(safeMsg, zapFields...) + case logpkg.LevelInfo: + l.must().Info(safeMsg, zapFields...) + case logpkg.LevelWarn: + l.must().Warn(safeMsg, zapFields...) + case logpkg.LevelError: + l.must().Error(safeMsg, zapFields...) + default: + // Unknown level policy: treat as Info. This is consistent across both + // GoLogger and zap backends. See log.Level documentation. + l.must().Info(safeMsg, zapFields...) + } +} + +// With returns a child logger with additional structured fields. +// +//nolint:ireturn +func (l *Logger) With(fields ...logpkg.Field) logpkg.Logger { + if l == nil { + return &Logger{logger: zap.NewNop()} + } + + return &Logger{ + logger: l.must().With(logFieldsToZap(fields)...), + atomicLevel: l.atomicLevel, + consoleEncoding: l.consoleEncoding, + } +} + +// WithGroup returns a child logger that nests subsequent fields under a namespace. +// Empty group names are silently ignored, consistent with GoLogger behavior. +// +//nolint:ireturn +func (l *Logger) WithGroup(name string) logpkg.Logger { + if l == nil { + return &Logger{logger: zap.NewNop()} + } + + if name == "" { + return l + } + + return &Logger{ + logger: l.must().With(zap.Namespace(name)), + atomicLevel: l.atomicLevel, + consoleEncoding: l.consoleEncoding, + } +} + +// Enabled reports whether the logger would emit a log at the given level. +func (l *Logger) Enabled(level logpkg.Level) bool { + return l.must().Core().Enabled(logLevelToZap(level)) +} + +// Sync flushes buffered logs, respecting context cancellation. +func (l *Logger) Sync(ctx context.Context) error { + if ctx == nil { + return l.must().Sync() + } + + if err := ctx.Err(); err != nil { + return err + } + + done := make(chan error, 1) + + go func() { + defer func() { + if r := recover(); r != nil { + runtime.HandlePanicValue(ctx, nil, r, "zap", "sync") + + done <- fmt.Errorf("panic during logger sync: %v", r) + } + }() + + done <- l.must().Sync() + }() + + select { + case <-ctx.Done(): + return ctx.Err() + case err := <-done: + return err + } +} + +// --------------------------------------------------------------------------- +// Convenience methods (direct zap.Field access for performance-sensitive code) +// --------------------------------------------------------------------------- + +// WithZapFields returns a child logger with additional zap.Field values. +// Use this when working directly with zap fields for performance. +func (l *Logger) WithZapFields(fields ...Field) *Logger { + if l == nil { + return &Logger{logger: zap.NewNop()} + } + + return &Logger{ + logger: l.must().With(fields...), + atomicLevel: l.atomicLevel, + consoleEncoding: l.consoleEncoding, + } +} + +// Debug logs a message with debug severity. +func (l *Logger) Debug(message string, fields ...Field) { + l.must().Debug(message, fields...) +} + +// Info logs a message with info severity. +func (l *Logger) Info(message string, fields ...Field) { + l.must().Info(message, fields...) +} + +// Warn logs a message with warn severity. +func (l *Logger) Warn(message string, fields ...Field) { + l.must().Warn(message, fields...) +} + +// Error logs a message with error severity. +func (l *Logger) Error(message string, fields ...Field) { + l.must().Error(message, fields...) +} + +// Raw returns the underlying zap logger. +func (l *Logger) Raw() *zap.Logger { + return l.must() +} + +// Level returns the runtime-adjustable level handle for this logger. +// On a nil receiver, a default AtomicLevel (info) is returned. +func (l *Logger) Level() zap.AtomicLevel { + if l == nil { + return zap.NewAtomicLevel() + } + + return l.atomicLevel +} + +// Any creates a field with any value. +func Any(key string, value any) Field { + return zap.Any(key, value) +} + +// String creates a string field. +func String(key, value string) Field { + return zap.String(key, value) +} + +// Int creates an int field. +func Int(key string, value int) Field { + return zap.Int(key, value) +} + +// Bool creates a bool field. +func Bool(key string, value bool) Field { + return zap.Bool(key, value) +} + +// Duration creates a duration field. +func Duration(key string, value time.Duration) Field { + return zap.Duration(key, value) +} + +// ErrorField creates an error field. +func ErrorField(err error) Field { + return zap.Error(err) +} + +// --------------------------------------------------------------------------- +// Internal conversion helpers +// --------------------------------------------------------------------------- + +// logLevelToZap converts a log.Level to a zapcore.Level. +func logLevelToZap(level logpkg.Level) zapcore.Level { + switch level { + case logpkg.LevelDebug: + return zapcore.DebugLevel + case logpkg.LevelInfo: + return zapcore.InfoLevel + case logpkg.LevelWarn: + return zapcore.WarnLevel + case logpkg.LevelError: + return zapcore.ErrorLevel + default: + return zapcore.InfoLevel + } +} + +// redactedValue is the placeholder used for sensitive field values in log output. +const redactedValue = "[REDACTED]" + +// consoleControlCharReplacer neutralizes control characters that can split log +// lines or forge entries in console-encoded output (CWE-117). JSON encoding +// handles this automatically via its escaping rules. +var consoleControlCharReplacer = strings.NewReplacer( + "\n", `\n`, + "\r", `\r`, + "\t", `\t`, + "\x00", `\0`, +) + +// sanitizeConsoleMsg escapes control characters in a message string +// when the logger is configured with console encoding. +func (l *Logger) sanitizeConsoleMsg(msg string) string { + if l != nil && l.consoleEncoding { + return consoleControlCharReplacer.Replace(msg) + } + + return msg +} + +// logFieldsToZap converts log.Field values to zap.Field values. +// Sensitive field keys (matched via redaction.IsSensitiveField) are redacted. +func logFieldsToZap(fields []logpkg.Field) []zap.Field { + zapFields := make([]zap.Field, len(fields)) + for i, f := range fields { + if redaction.IsSensitiveField(f.Key) { + zapFields[i] = zap.String(f.Key, redactedValue) + } else { + zapFields[i] = zap.Any(f.Key, f.Value) + } + } + + return zapFields +} From 86bde89a4c198798e5caa31c186080916d5a5397 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:28:01 -0300 Subject: [PATCH 06/26] chore(deps): add testify, mock, and yaml dependencies X-Lerian-Ref: 0x1 --- go.mod | 3 +++ go.sum | 11 +++++++++++ 2 files changed, 14 insertions(+) diff --git a/go.mod b/go.mod index 29d986e..b076336 100644 --- a/go.mod +++ b/go.mod @@ -7,6 +7,7 @@ require ( github.com/google/uuid v1.6.0 github.com/shirou/gopsutil v3.21.11+incompatible github.com/shopspring/decimal v1.4.0 + github.com/stretchr/testify v1.11.1 go.opentelemetry.io/contrib/bridges/otelzap v0.18.0 go.opentelemetry.io/otel v1.43.0 go.opentelemetry.io/otel/exporters/otlp/otlplog/otlploggrpc v0.19.0 @@ -19,6 +20,7 @@ require ( go.opentelemetry.io/otel/sdk/log v0.19.0 go.opentelemetry.io/otel/sdk/metric v1.43.0 go.opentelemetry.io/otel/trace v1.43.0 + go.uber.org/mock v0.6.0 go.uber.org/zap v1.28.0 google.golang.org/grpc v1.81.0 ) @@ -52,4 +54,5 @@ require ( google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 // indirect google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 // indirect google.golang.org/protobuf v1.36.11 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect ) diff --git a/go.sum b/go.sum index b6c433a..c88ebfc 100644 --- a/go.sum +++ b/go.sum @@ -28,6 +28,10 @@ github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0 h1:HWRh5R2+9EifMyIHV7ZV+MIZqgz github.com/grpc-ecosystem/grpc-gateway/v2 v2.28.0/go.mod h1:JfhWUomR1baixubs02l85lZYYOm7LV6om4ceouMv45c= github.com/klauspost/compress v1.18.5 h1:/h1gH5Ce+VWNLSWqPzOVn6XBO+vJbCNGvjoaGBFW2IE= github.com/klauspost/compress v1.18.5/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ= +github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE= +github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk= +github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY= +github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE= github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE= github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8= github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY= @@ -36,6 +40,8 @@ github.com/mattn/go-runewidth v0.0.21 h1:jJKAZiQH+2mIinzCJIaIG9Be1+0NR+5sz/lYEEj github.com/mattn/go-runewidth v0.0.21/go.mod h1:XBkDxAl56ILZc9knddidhrOlY5R/pDhgLpndooCuJAs= github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U= github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ= +github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc= github.com/shirou/gopsutil v3.21.11+incompatible h1:+1+c1VGhc88SSonWP6foOcLhvnKlUeu/erjjvaPEYiI= github.com/shirou/gopsutil v3.21.11+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA= github.com/shopspring/decimal v1.4.0 h1:bxl37RwXBklmTi0C79JfXCEBD1cqqHt0bbgBAGFp81k= @@ -88,6 +94,8 @@ go.opentelemetry.io/proto/otlp v1.10.0 h1:IQRWgT5srOCYfiWnpqUYz9CVmbO8bFmKcwYxpu go.opentelemetry.io/proto/otlp v1.10.0/go.mod h1:/CV4QoCR/S9yaPj8utp3lvQPoqMtxXdzn7ozvvozVqk= go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto= go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE= +go.uber.org/mock v0.6.0 h1:hyF9dfmbgIX5EfOdasqLsWD6xqpNZlXblLB/Dbnwv3Y= +go.uber.org/mock v0.6.0/go.mod h1:KiVJ4BqZJaMj4svdfmHM0AUx4NJYO8ZNpPnZn1Z+BBU= go.uber.org/multierr v1.11.0 h1:blXXJkSxSSfBVBlC76pxqeO+LN3aDfLQo+309xJstO0= go.uber.org/multierr v1.11.0/go.mod h1:20+QtiLqy0Nd6FdQB9TLXag12DsQkrbs3htMFfDN80Y= go.uber.org/zap v1.28.0 h1:IZzaP1Fv73/T/pBMLk4VutPl36uNC+OSUh3JLG3FIjo= @@ -113,5 +121,8 @@ google.golang.org/grpc v1.81.0 h1:W3G9N3KQf3BU+YuCtGKJk0CmxQNbAISICD/9AORxLIw= google.golang.org/grpc v1.81.0/go.mod h1:xGH9GfzOyMTGIOXBJmXt+BX/V0kcdQbdcuwQ/zNw42I= google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE= google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk= +gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q= gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= From 53d3f223af831f5f1d518683b3024e9a93e0cb19 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:30:08 -0300 Subject: [PATCH 07/26] feat(middleware): migrate HTTP/gRPC telemetry middleware from lib-commons Ports withTelemetry, helpers, metrics collector, and context span helpers to the middleware/ package. Adds ContextWithHeaderID root helper required by the middleware. X-Lerian-Ref: 0x1 --- context_helpers.go | 17 + middleware/context_span.go | 69 +++ middleware/helpers.go | 148 +++++ middleware/metrics.go | 135 +++++ middleware/telemetry.go | 323 +++++++++++ middleware/telemetry_route_test.go | 44 ++ middleware/telemetry_test.go | 902 +++++++++++++++++++++++++++++ 7 files changed, 1638 insertions(+) create mode 100644 context_helpers.go create mode 100644 middleware/context_span.go create mode 100644 middleware/helpers.go create mode 100644 middleware/metrics.go create mode 100644 middleware/telemetry.go create mode 100644 middleware/telemetry_route_test.go create mode 100644 middleware/telemetry_test.go diff --git a/context_helpers.go b/context_helpers.go new file mode 100644 index 0000000..c88eba8 --- /dev/null +++ b/context_helpers.go @@ -0,0 +1,17 @@ +package observability + +import "context" + +// ContextWithHeaderID returns a context with the given correlation/request HeaderID attached. +// This is the ingress middleware entry-point: every inbound HTTP/gRPC request should call +// this once so that all downstream NewTrackingFromContext calls return a stable, client-visible ID. +func ContextWithHeaderID(ctx context.Context, headerID string) context.Context { + if ctx == nil { + ctx = context.Background() + } + + values := cloneContextValues(ctx) + values.HeaderID = headerID + + return context.WithValue(ctx, ContextKey, values) +} diff --git a/middleware/context_span.go b/middleware/context_span.go new file mode 100644 index 0000000..5dced34 --- /dev/null +++ b/middleware/context_span.go @@ -0,0 +1,69 @@ +package middleware + +import ( + "reflect" + + "github.com/google/uuid" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/trace" +) + +// isNilSpan reports whether span is nil, including typed-nil interface values +// where a concrete nil pointer is stored in a trace.Span interface. +// This prevents panics when calling methods on a typed-nil span. +func isNilSpan(span trace.Span) bool { + if span == nil { + return true + } + + v := reflect.ValueOf(span) + + switch v.Kind() { + case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice: + return v.IsNil() + default: + return false + } +} + +// SetHandlerSpanAttributes adds tenant_id and context_id attributes to a trace span. +func SetHandlerSpanAttributes(span trace.Span, tenantID, contextID uuid.UUID) { + if isNilSpan(span) { + return + } + + span.SetAttributes(attribute.String("tenant.id", tenantID.String())) + + if contextID != uuid.Nil { + span.SetAttributes(attribute.String("context.id", contextID.String())) + } +} + +// SetTenantSpanAttribute adds tenant_id attribute to a trace span. +func SetTenantSpanAttribute(span trace.Span, tenantID uuid.UUID) { + if isNilSpan(span) { + return + } + + span.SetAttributes(attribute.String("tenant.id", tenantID.String())) +} + +// SetExceptionSpanAttributes adds tenant_id and exception_id attributes to a trace span. +func SetExceptionSpanAttributes(span trace.Span, tenantID, exceptionID uuid.UUID) { + if isNilSpan(span) { + return + } + + span.SetAttributes(attribute.String("tenant.id", tenantID.String())) + span.SetAttributes(attribute.String("exception.id", exceptionID.String())) +} + +// SetDisputeSpanAttributes adds tenant_id and dispute_id attributes to a trace span. +func SetDisputeSpanAttributes(span trace.Span, tenantID, disputeID uuid.UUID) { + if isNilSpan(span) { + return + } + + span.SetAttributes(attribute.String("tenant.id", tenantID.String())) + span.SetAttributes(attribute.String("dispute.id", disputeID.String())) +} diff --git a/middleware/helpers.go b/middleware/helpers.go new file mode 100644 index 0000000..bb9f75f --- /dev/null +++ b/middleware/helpers.go @@ -0,0 +1,148 @@ +package middleware + +import ( + "context" + "net/url" + "regexp" + "strings" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/redaction" + "github.com/gofiber/fiber/v2" + "google.golang.org/grpc/metadata" +) + +// uuidPattern matches standard UUID v4 strings (8-4-4-4-12 hex digits). +var uuidPattern = regexp.MustCompile(`[0-9a-fA-F-]{36}`) + +// internalServicePattern matches Lerian internal service user-agent strings. +var internalServicePattern = regexp.MustCompile(`^[\w-]+/[\d.]+\s+LerianStudio$`) + +// isRouteExcludedFromList reports whether the request path matches any excluded route prefix. +// This standalone function is used to evaluate route exclusions independently of whether +// the TelemetryMiddleware receiver is nil. +func isRouteExcludedFromList(c *fiber.Ctx, excludedRoutes []string) bool { + for _, route := range excludedRoutes { + if strings.HasPrefix(c.Path(), route) { + return true + } + } + + return false +} + +// sanitizeURL removes or obfuscates sensitive query parameters from URLs +// to prevent exposing tokens, API keys, and other sensitive data in telemetry. +func sanitizeURL(rawURL string) string { + parsed, err := url.Parse(rawURL) + if err != nil { + return sanitizeMalformedURL(rawURL) + } + + if parsed.RawQuery == "" { + return rawURL + } + + query := parsed.Query() + modified := false + + for key := range query { + if redaction.IsSensitiveField(key) { + query.Set(key, constant.ObfuscatedValue) + + modified = true + } + } + + if !modified { + return rawURL + } + + parsed.RawQuery = query.Encode() + + return parsed.String() +} + +func sanitizeMalformedURL(rawURL string) string { + sanitized := sanitizeLogValue(rawURL) + if before, _, ok := strings.Cut(sanitized, "?"); ok { + return before + "?redacted" + } + + return sanitized +} + +// sanitizeLogValue removes control characters (newlines, carriage returns, null bytes) +// from a string to prevent log injection attacks (CWE-117). +func sanitizeLogValue(raw string) string { + replacer := strings.NewReplacer("\r", "", "\n", "", "\x00", "") + return replacer.Replace(raw) +} + +// getGRPCUserAgent extracts the User-Agent from incoming gRPC metadata. +// Returns empty string if the metadata is not present or doesn't contain user-agent. +func getGRPCUserAgent(ctx context.Context) string { + if ctx == nil { + return "" + } + + md, ok := metadata.FromIncomingContext(ctx) + if !ok || md == nil { + return "" + } + + userAgents := md.Get(strings.ToLower(headerUserAgent)) + if len(userAgents) == 0 { + return "" + } + + return userAgents[0] +} + +// isInternalLerianService reports whether a user-agent belongs to a Lerian internal service. +func isInternalLerianService(userAgent string) bool { + return internalServicePattern.MatchString(userAgent) +} + +// replaceUUIDWithPlaceholder replaces UUIDs with a placeholder in a given path string. +func replaceUUIDWithPlaceholder(path string) string { + return uuidPattern.ReplaceAllString(path, ":id") +} + +// isNilOrEmptyString reports whether a string pointer is nil or the trimmed value is empty. +func isNilOrEmptyString(s *string) bool { + return s == nil || strings.TrimSpace(*s) == "" || strings.TrimSpace(*s) == "null" || strings.TrimSpace(*s) == "nil" +} + +// normalizeRequestID trims whitespace and control characters from a raw request ID. +func normalizeRequestID(raw string) string { + return strings.TrimSpace(sanitizeLogValue(raw)) +} + +// normalizeGRPCContext returns a non-nil context, falling back to context.Background(). +func normalizeGRPCContext(ctx context.Context) context.Context { + if ctx == nil { + return context.Background() + } + + return ctx +} + +// getMetadataID extracts a correlation id from incoming gRPC metadata if present. +func getMetadataID(ctx context.Context) string { + if ctx == nil { + return "" + } + + if md, ok := metadata.FromIncomingContext(ctx); ok && md != nil { + headerID := md.Get(metadataID) + if len(headerID) > 0 { + v := normalizeRequestID(headerID[0]) + if v != "" && v != "null" && v != "nil" { + return v + } + } + } + + return "" +} diff --git a/middleware/metrics.go b/middleware/metrics.go new file mode 100644 index 0000000..1db2acf --- /dev/null +++ b/middleware/metrics.go @@ -0,0 +1,135 @@ +package middleware + +import ( + "context" + "errors" + "os" + "sync" + "time" + + observability "github.com/LerianStudio/lib-observability" + "github.com/LerianStudio/lib-observability/runtime" +) + +// DefaultMetricsCollectionInterval is the default interval for collecting system metrics. +// Can be overridden via METRICS_COLLECTION_INTERVAL environment variable. +const DefaultMetricsCollectionInterval = 5 * time.Second + +// Metrics collector singleton state. +var ( + metricsCollectorOnce = &sync.Once{} + metricsCollectorShutdown chan struct{} + metricsCollectorMu sync.Mutex + metricsCollectorStarted bool + metricsCollectorInitErr error +) + +// telemetryRuntimeLogger returns the runtime logger from the telemetry middleware, or nil. +func telemetryRuntimeLogger(tm *TelemetryMiddleware) runtime.Logger { + if tm == nil || tm.Telemetry == nil { + return nil + } + + return tm.Telemetry.Logger +} + +// collectMetrics ensures the background metrics collector goroutine is running. +func (tm *TelemetryMiddleware) collectMetrics(_ context.Context) error { + return tm.ensureMetricsCollector() +} + +// getMetricsCollectionInterval returns the metrics collection interval. +// Can be configured via METRICS_COLLECTION_INTERVAL environment variable. +// Accepts Go duration format (e.g., "10s", "1m", "500ms"). +// Falls back to DefaultMetricsCollectionInterval if not set or invalid. +func getMetricsCollectionInterval() time.Duration { + if envInterval := os.Getenv("METRICS_COLLECTION_INTERVAL"); envInterval != "" { + if parsed, err := time.ParseDuration(envInterval); err == nil && parsed > 0 { + return parsed + } + } + + return DefaultMetricsCollectionInterval +} + +// ensureMetricsCollector lazily starts the background metrics collector singleton. +func (tm *TelemetryMiddleware) ensureMetricsCollector() error { + if tm == nil || tm.Telemetry == nil { + return nil + } + + if tm.Telemetry.MeterProvider == nil { + return nil + } + + metricsCollectorMu.Lock() + defer metricsCollectorMu.Unlock() + + if metricsCollectorStarted { + return nil + } + + if metricsCollectorInitErr != nil { + metricsCollectorOnce = &sync.Once{} + metricsCollectorInitErr = nil + } + + metricsCollectorOnce.Do(func() { + factory := tm.Telemetry.MetricsFactory + if factory == nil { + metricsCollectorInitErr = errors.New("telemetry MetricsFactory is nil, cannot start system metrics collector") + return + } + + metricsCollectorShutdown = make(chan struct{}) + ticker := time.NewTicker(getMetricsCollectionInterval()) + + runtime.SafeGoWithContextAndComponent( + context.Background(), + telemetryRuntimeLogger(tm), + "http", + "metrics_collector", + runtime.KeepRunning, + func(_ context.Context) { + observability.GetCPUUsage(context.Background(), factory) + observability.GetMemUsage(context.Background(), factory) + + for { + select { + case <-metricsCollectorShutdown: + ticker.Stop() + return + case <-ticker.C: + observability.GetCPUUsage(context.Background(), factory) + observability.GetMemUsage(context.Background(), factory) + } + } + }, + ) + + metricsCollectorStarted = true + }) + + return metricsCollectorInitErr +} + +// StopMetricsCollector stops the background metrics collector goroutine. +// Should be called during application shutdown for graceful cleanup. +// After calling this function, the collector can be restarted by new requests. +// +// Implementation note: This function intentionally resets sync.Once to a new instance +// to allow the collector to be restarted after being stopped. This is an unusual but +// intentional pattern - the mutex ensures thread-safety during the reset operation, +// preventing race conditions between Stop and subsequent Start calls. +func StopMetricsCollector() { + metricsCollectorMu.Lock() + defer metricsCollectorMu.Unlock() + + if metricsCollectorStarted && metricsCollectorShutdown != nil { + close(metricsCollectorShutdown) + + metricsCollectorStarted = false + metricsCollectorOnce = &sync.Once{} + metricsCollectorInitErr = nil + } +} diff --git a/middleware/telemetry.go b/middleware/telemetry.go new file mode 100644 index 0000000..eded981 --- /dev/null +++ b/middleware/telemetry.go @@ -0,0 +1,323 @@ +// Package middleware provides Fiber HTTP and gRPC telemetry middleware that +// integrates with the lib-observability tracing and metrics packages. +package middleware + +import ( + "context" + "errors" + "fmt" + "reflect" + "strings" + + observability "github.com/LerianStudio/lib-observability" + "github.com/LerianStudio/lib-observability/tracing" + "github.com/gofiber/fiber/v2" + "github.com/google/uuid" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/codes" + "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc" + "google.golang.org/grpc/metadata" + "google.golang.org/grpc/status" +) + +// Header and metadata key constants used by the middleware. +const ( + // headerID is the request identifier header key. + headerID = "X-Request-Id" + // headerUserAgent is the HTTP User-Agent header key. + headerUserAgent = "User-Agent" + // metadataID is the gRPC metadata key that carries the request context identifier. + metadataID = "metadata_id" +) + +// ErrContextNotFound is returned when a required Fiber context is nil. +var ErrContextNotFound = errors.New("fiber context not found") + +// TelemetryMiddleware wraps HTTP and gRPC handlers with tracing and metrics setup. +type TelemetryMiddleware struct { + Telemetry *tracing.Telemetry +} + +// NewTelemetryMiddleware creates a new instance of TelemetryMiddleware. +func NewTelemetryMiddleware(tl *tracing.Telemetry) *TelemetryMiddleware { + return &TelemetryMiddleware{tl} +} + +// WithTelemetry is a middleware that adds tracing to the context. +func (tm *TelemetryMiddleware) WithTelemetry(tl *tracing.Telemetry, excludedRoutes ...string) fiber.Handler { + return func(c *fiber.Ctx) error { + effectiveTelemetry := tl + if effectiveTelemetry == nil && tm != nil { + effectiveTelemetry = tm.Telemetry + } + + if effectiveTelemetry == nil { + return c.Next() + } + + if len(excludedRoutes) > 0 && isRouteExcludedFromList(c, excludedRoutes) { + return c.Next() + } + + setRequestHeaderID(c) + + ctx := c.UserContext() + _, _, reqId, _ := observability.NewTrackingFromContext(ctx) + + c.SetUserContext(observability.ContextWithSpanAttributes(ctx, + attribute.String("app.request.request_id", reqId), + )) + + if effectiveTelemetry.TracerProvider == nil { + return c.Next() + } + + // Capture all Fiber context string values BEFORE c.Next(). Fiber v2 uses + // utils.UnsafeString which returns pointers into fasthttp's request buffer. + // After c.Next() returns, fasthttp may recycle the underlying RequestCtx + // for the next connection, corrupting any previously returned string slices. + // Safe copies via string([]byte(...)) ensure the data is heap-owned. + method := string([]byte(c.Method())) + originalURL := string([]byte(c.OriginalURL())) + protocol := string([]byte(c.Protocol())) + hostname := string([]byte(c.Hostname())) + userAgent := string([]byte(c.Get(headerUserAgent))) + + tracer := effectiveTelemetry.TracerProvider.Tracer(effectiveTelemetry.LibraryName) + routePathWithMethod := method + " " + replaceUUIDWithPlaceholder(c.Path()) + + traceCtx := c.UserContext() + // Compatibility note: trace extraction currently trusts the internal-service + // User-Agent heuristic. This is an interoperability hint, not an authenticated + // trust boundary, and is preserved to avoid changing existing caller behavior. + if isInternalLerianService(userAgent) { + traceCtx = tracing.ExtractHTTPContext(traceCtx, c) + } + + ctx, span := tracer.Start(traceCtx, routePathWithMethod, trace.WithSpanKind(trace.SpanKindServer)) + defer span.End() + + ctx = observability.ContextWithTracer(ctx, tracer) + ctx = observability.ContextWithMetricFactory(ctx, effectiveTelemetry.MetricsFactory) + c.SetUserContext(ctx) + + err := tm.collectMetrics(ctx) + if err != nil { + tracing.HandleSpanError(span, "Failed to collect metrics", err) + } + + err = c.Next() + + statusCode := c.Response().StatusCode() + span.SetAttributes( + attribute.String("http.request.method", method), + attribute.String("url.path", sanitizeURL(originalURL)), + attribute.String("http.route", c.Route().Path), + attribute.String("url.scheme", protocol), + attribute.String("server.address", hostname), + attribute.String("user_agent.original", userAgent), + attribute.Int("http.response.status_code", statusCode), + ) + + if err != nil { + tracing.HandleSpanError(span, "handler error", err) + } else if statusCode >= 500 { + span.SetStatus(codes.Error, fmt.Sprintf("HTTP %d", statusCode)) + } + + return err + } +} + +// EndTracingSpans is a middleware that ends the tracing spans. +func (tm *TelemetryMiddleware) EndTracingSpans(c *fiber.Ctx) error { + if c == nil { + return ErrContextNotFound + } + + originalCtx := c.UserContext() + err := c.Next() + + endCtx := c.UserContext() + if endCtx == nil { + endCtx = originalCtx + } + + if endCtx != nil { + trace.SpanFromContext(endCtx).End() + } + + return err +} + +// WithTelemetryInterceptor is a gRPC interceptor that adds tracing to the context. +func (tm *TelemetryMiddleware) WithTelemetryInterceptor(tl *tracing.Telemetry) grpc.UnaryServerInterceptor { + return func( + ctx context.Context, + req any, + info *grpc.UnaryServerInfo, + handler grpc.UnaryHandler, + ) (any, error) { + ctx = normalizeGRPCContext(ctx) + + effectiveTelemetry := tl + if effectiveTelemetry == nil && tm != nil { + effectiveTelemetry = tm.Telemetry + } + + if effectiveTelemetry == nil { + return handler(ctx, req) + } + + requestID := resolveGRPCRequestID(ctx, req) + ctx = observability.ContextWithHeaderID(ctx, requestID) + + if effectiveTelemetry.TracerProvider == nil { + return handler(ctx, req) + } + + tracer := effectiveTelemetry.TracerProvider.Tracer(effectiveTelemetry.LibraryName) + + methodName := "unknown" + if info != nil { + methodName = info.FullMethod + } + + ctx = observability.ContextWithSpanAttributes(ctx, + attribute.String("app.request.request_id", requestID), + attribute.String("grpc.method", methodName), + ) + + traceCtx := ctx + // Compatibility note: trace extraction currently trusts the internal-service + // User-Agent heuristic. This is an interoperability hint, not an authenticated + // trust boundary, and is preserved to avoid changing existing caller behavior. + if isInternalLerianService(getGRPCUserAgent(ctx)) { + md, _ := metadata.FromIncomingContext(ctx) + traceCtx = tracing.ExtractGRPCContext(ctx, md) + } + + ctx, span := tracer.Start(traceCtx, methodName, trace.WithSpanKind(trace.SpanKindServer)) + defer span.End() + + ctx = observability.ContextWithTracer(ctx, tracer) + ctx = observability.ContextWithMetricFactory(ctx, effectiveTelemetry.MetricsFactory) + + err := tm.collectMetrics(ctx) + if err != nil { + tracing.HandleSpanError(span, "Failed to collect metrics", err) + } + + resp, err := handler(ctx, req) + + grpcStatusCode := status.Code(err) + span.SetAttributes( + attribute.String("rpc.method", methodName), + attribute.Int("rpc.grpc.status_code", int(grpcStatusCode)), + ) + + if err != nil { + tracing.HandleSpanError(span, "gRPC handler error", err) + } + + return resp, err + } +} + +// EndTracingSpansInterceptor is a gRPC interceptor that ends the tracing spans. +func (tm *TelemetryMiddleware) EndTracingSpansInterceptor() grpc.UnaryServerInterceptor { + return func( + ctx context.Context, + req any, + info *grpc.UnaryServerInfo, + handler grpc.UnaryHandler, + ) (any, error) { + resp, err := handler(ctx, req) + trace.SpanFromContext(ctx).End() + + return resp, err + } +} + +// setRequestHeaderID ensures the Fiber request carries a unique correlation ID header. +// The effective ID is always echoed back on the response so that callers can +// correlate their request regardless of whether the ID was client-supplied or +// server-generated. +func setRequestHeaderID(c *fiber.Ctx) { + hid := normalizeRequestID(c.Get(headerID)) + + if isNilOrEmptyString(&hid) { + hid = uuid.New().String() + } + + c.Request().Header.Set(headerID, hid) + c.Set(headerID, hid) + c.Response().Header.Set(headerID, hid) + + ctx := observability.ContextWithHeaderID(c.UserContext(), hid) + c.SetUserContext(ctx) +} + +// resolveGRPCRequestID determines the request ID for a gRPC call from the request body, +// existing context header, gRPC metadata (in that priority order), or generates a new UUID. +func resolveGRPCRequestID(ctx context.Context, req any) string { + if rid, ok := getValidBodyRequestID(req); ok { + return rid + } + + if existing := getContextHeaderID(ctx); existing != "" { + return existing + } + + if rid := getMetadataID(ctx); rid != "" { + return rid + } + + return uuid.New().String() +} + +// getContextHeaderID extracts the HeaderID from the observability context value. +func getContextHeaderID(ctx context.Context) string { + if ctx == nil { + return "" + } + + cv, ok := ctx.Value(observability.ContextKey).(*observability.ContextValue) + if !ok || cv == nil { + return "" + } + + return normalizeRequestID(cv.HeaderID) +} + +// getValidBodyRequestID extracts and validates the request_id from the gRPC request body. +// Returns (id, true) when present and valid UUID; otherwise ("", false). +func getValidBodyRequestID(req any) (string, bool) { + if req == nil { + return "", false + } + + // Check for typed-nil interface. + v := reflect.ValueOf(req) + if (v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface) && v.IsNil() { + return "", false + } + + r, ok := req.(interface{ GetRequestId() string }) + if !ok { + return "", false + } + + rid := strings.TrimSpace(r.GetRequestId()) + if rid == "" { + return "", false + } + + // Validate it is a UUID. + if _, err := uuid.Parse(rid); err != nil { + return "", false + } + + return rid, true +} diff --git a/middleware/telemetry_route_test.go b/middleware/telemetry_route_test.go new file mode 100644 index 0000000..0af8c50 --- /dev/null +++ b/middleware/telemetry_route_test.go @@ -0,0 +1,44 @@ +//go:build unit + +package middleware + +import ( + "context" + "net/http" + "net/http/httptest" + "testing" + + "github.com/LerianStudio/lib-observability/tracing" + "github.com/gofiber/fiber/v2" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel" +) + +func TestWithTelemetry_UnmatchedRouteDoesNotPanic(t *testing.T) { + t.Parallel() + + tp, spanRecorder := setupTestTracer() + defer func() { _ = tp.Shutdown(context.Background()) }() + + oldTP := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTP) + + tel := &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{LibraryName: "test-library", EnableTelemetry: true}, + TracerProvider: tp, + } + + app := fiber.New() + app.Use(NewTelemetryMiddleware(tel).WithTelemetry(tel)) + + assert.NotPanics(t, func() { + resp, err := app.Test(httptest.NewRequest(http.MethodGet, "/missing", nil)) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + assert.Equal(t, http.StatusNotFound, resp.StatusCode) + }) + + assert.NotEmpty(t, spanRecorder.Ended()) +} diff --git a/middleware/telemetry_test.go b/middleware/telemetry_test.go new file mode 100644 index 0000000..82937f1 --- /dev/null +++ b/middleware/telemetry_test.go @@ -0,0 +1,902 @@ +//go:build unit + +package middleware + +import ( + "context" + "errors" + "net/http" + "net/http/httptest" + "strings" + "sync" + "testing" + "time" + + "github.com/LerianStudio/lib-observability/metrics" + "github.com/LerianStudio/lib-observability/tracing" + "github.com/gofiber/fiber/v2" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/propagation" + sdkmetric "go.opentelemetry.io/otel/sdk/metric" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "go.opentelemetry.io/otel/sdk/trace/tracetest" + oteltrace "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc" + "google.golang.org/grpc/metadata" +) + +// setupTestTracer sets up a test tracer provider and returns it along with a span recorder. +func setupTestTracer() (*sdktrace.TracerProvider, *tracetest.SpanRecorder) { + spanRecorder := tracetest.NewSpanRecorder() + tracerProvider := sdktrace.NewTracerProvider( + sdktrace.WithSpanProcessor(spanRecorder), + ) + + otel.SetTextMapPropagator(propagation.TraceContext{}) + + return tracerProvider, spanRecorder +} + +// TestWithTelemetry tests the WithTelemetry middleware function. +func TestWithTelemetry(t *testing.T) { + tests := []struct { + name string + path string + method string + setupHandler func(c *fiber.Ctx) error + nilTelemetry bool + traceparent string + expectedStatusCode int + expectSpan bool + swaggerPath bool + }{ + { + name: "Basic middleware functionality", + path: "/api/resource", + method: "GET", + setupHandler: func(c *fiber.Ctx) error { return c.SendStatus(http.StatusOK) }, + expectedStatusCode: http.StatusOK, + expectSpan: true, + }, + { + name: "Handler returns error", + path: "/api/resource", + method: "POST", + setupHandler: func(c *fiber.Ctx) error { return errors.New("handler error") }, + expectedStatusCode: http.StatusInternalServerError, + expectSpan: true, + }, + { + name: "Nil telemetry", + path: "/api/resource", + method: "GET", + setupHandler: func(c *fiber.Ctx) error { return c.SendStatus(http.StatusOK) }, + nilTelemetry: true, + expectedStatusCode: http.StatusOK, + expectSpan: false, + }, + { + name: "With trace context", + path: "/api/resource", + method: "GET", + setupHandler: func(c *fiber.Ctx) error { return c.SendStatus(http.StatusOK) }, + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + expectedStatusCode: http.StatusOK, + expectSpan: true, + }, + { + name: "UUID in path", + path: "/api/users/123e4567-e89b-12d3-a456-426614174000/profile", + method: "GET", + setupHandler: func(c *fiber.Ctx) error { return c.SendStatus(http.StatusOK) }, + expectedStatusCode: http.StatusOK, + expectSpan: true, + }, + { + name: "Swagger path bypass", + path: "/swagger/api-docs", + method: "GET", + setupHandler: func(c *fiber.Ctx) error { return c.SendStatus(http.StatusOK) }, + expectedStatusCode: http.StatusOK, + expectSpan: false, + swaggerPath: true, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ctx := context.Background() + + tp, spanRecorder := setupTestTracer() + defer func() { + _ = tp.Shutdown(ctx) + }() + + oldTracerProvider := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTracerProvider) + + var tel *tracing.Telemetry + if !tt.nilTelemetry { + tel = &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{ + LibraryName: "test-library", + EnableTelemetry: true, + }, + TracerProvider: tp, + } + } + + mid := NewTelemetryMiddleware(tel) + + app := fiber.New(fiber.Config{ + ErrorHandler: func(c *fiber.Ctx, err error) error { + return c.Status(http.StatusInternalServerError).SendString(err.Error()) + }, + }) + + if !tt.nilTelemetry { + if tt.swaggerPath { + app.Use(mid.WithTelemetry(tel, "/swagger")) + } else { + app.Use(mid.WithTelemetry(tel)) + } + } + + app.All(tt.path, func(c *fiber.Ctx) error { + return tt.setupHandler(c) + }) + + req, err := http.NewRequest(tt.method, tt.path, nil) + require.NoError(t, err) + + if tt.traceparent != "" { + req.Header.Set("traceparent", tt.traceparent) + } + + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.Equal(t, tt.expectedStatusCode, resp.StatusCode) + + spans := spanRecorder.Ended() + + if tt.expectSpan && !tt.nilTelemetry && !tt.swaggerPath { + require.GreaterOrEqual(t, len(spans), 1, "Expected at least one span to be created") + + expectedPath := tt.path + if strings.Contains(tt.path, "123e4567-e89b-12d3-a456-426614174000") { + expectedPath = replaceUUIDWithPlaceholder(tt.path) + } + + spanFound := false + for _, span := range spans { + if span.Name() == tt.method+" "+expectedPath { + spanFound = true + break + } + } + assert.True(t, spanFound, "Expected span with name %s not found", tt.method+" "+expectedPath) + } else if tt.swaggerPath || tt.nilTelemetry { + for _, span := range spans { + assert.NotEqual(t, tt.method+" "+tt.path, span.Name(), "Should not have created a span for swagger path or nil telemetry") + } + } + }) + } +} + +// TestWithTelemetryExcludedRoutes tests the WithTelemetry middleware with excluded routes. +func TestWithTelemetryExcludedRoutes(t *testing.T) { + tests := []struct { + name string + path string + method string + excludedRoutes []string + expectSpan bool + }{ + { + name: "Route not excluded", + path: "/api/users", + method: "GET", + excludedRoutes: []string{"/swagger", "/health"}, + expectSpan: true, + }, + { + name: "Route excluded by exact match", + path: "/swagger/api-docs", + method: "GET", + excludedRoutes: []string{"/swagger"}, + expectSpan: false, + }, + { + name: "Route excluded by partial match", + path: "/health/check", + method: "GET", + excludedRoutes: []string{"/health"}, + expectSpan: false, + }, + { + name: "Multiple excluded routes", + path: "/metrics/prometheus", + method: "GET", + excludedRoutes: []string{"/swagger", "/health", "/metrics"}, + expectSpan: false, + }, + { + name: "No excluded routes", + path: "/api/users", + method: "GET", + excludedRoutes: []string{}, + expectSpan: true, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ctx := context.Background() + + tp, spanRecorder := setupTestTracer() + defer func() { + _ = tp.Shutdown(ctx) + }() + + oldTracerProvider := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTracerProvider) + + tel := &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{ + LibraryName: "test-library", + EnableTelemetry: true, + }, + TracerProvider: tp, + } + + mid := NewTelemetryMiddleware(tel) + + app := fiber.New() + app.Use(mid.WithTelemetry(tel, tt.excludedRoutes...)) + + app.All(tt.path, func(c *fiber.Ctx) error { + return c.SendStatus(http.StatusOK) + }) + + req, err := http.NewRequest(tt.method, tt.path, nil) + require.NoError(t, err) + + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.Equal(t, http.StatusOK, resp.StatusCode) + + spans := spanRecorder.Ended() + + if tt.expectSpan { + require.GreaterOrEqual(t, len(spans), 1, "Expected at least one span to be created") + + expectedSpanName := tt.method + " " + replaceUUIDWithPlaceholder(tt.path) + spanFound := false + for _, span := range spans { + if span.Name() == expectedSpanName { + spanFound = true + break + } + } + assert.True(t, spanFound, "Expected span with name %s not found", expectedSpanName) + } else { + expectedSpanName := tt.method + " " + replaceUUIDWithPlaceholder(tt.path) + for _, span := range spans { + assert.NotEqual(t, expectedSpanName, span.Name(), "Should not have created a span for excluded route") + } + } + }) + } +} + +// TestEndTracingSpans tests the EndTracingSpans middleware function. +func TestEndTracingSpans(t *testing.T) { + tests := []struct { + name string + setupCtx bool + handlerErr error + }{ + { + name: "With context", + setupCtx: true, + handlerErr: nil, + }, + { + name: "Without context", + setupCtx: false, + handlerErr: nil, + }, + { + name: "With context and handler error", + setupCtx: true, + handlerErr: errors.New("handler error"), + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + spanRecorder := tracetest.NewSpanRecorder() + tp := sdktrace.NewTracerProvider( + sdktrace.WithSpanProcessor(spanRecorder), + ) + defer func() { + _ = tp.Shutdown(context.Background()) + }() + + tel := &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{ + LibraryName: "test-library", + EnableTelemetry: true, + }, + TracerProvider: tp, + } + + mid := NewTelemetryMiddleware(tel) + + app := fiber.New() + + setupMiddleware := func(c *fiber.Ctx) error { + ctx := c.UserContext() + if ctx == nil { + ctx = context.Background() + } + + if tt.setupCtx { + tracer := tp.Tracer("test") + ctx, _ = tracer.Start(ctx, "test-span") + c.SetUserContext(ctx) + } + + return c.Next() + } + + handler := func(c *fiber.Ctx) error { + return tt.handlerErr + } + + app.Get("/test", setupMiddleware, mid.EndTracingSpans, handler) + + req := httptest.NewRequest("GET", "/test", nil) + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + if tt.handlerErr != nil { + assert.Equal(t, fiber.StatusInternalServerError, resp.StatusCode) + } else { + assert.Equal(t, fiber.StatusOK, resp.StatusCode) + } + + if tt.setupCtx { + assert.Eventually(t, func() bool { + return len(spanRecorder.Ended()) == 1 + }, time.Second, 10*time.Millisecond, "Expected middleware to end one span") + + spans := spanRecorder.Ended() + if assert.Len(t, spans, 1) { + assert.Equal(t, "test-span", spans[0].Name()) + } + } else { + assert.Never(t, func() bool { + return len(spanRecorder.Ended()) > 0 + }, 100*time.Millisecond, 10*time.Millisecond, "Expected no spans to be ended") + } + }) + } +} + +func TestEndTracingSpans_CallsNextWithoutInitialContext(t *testing.T) { + t.Parallel() + + app := fiber.New() + mid := &TelemetryMiddleware{} + handlerCalled := false + + app.Get("/test", mid.EndTracingSpans, func(c *fiber.Ctx) error { + handlerCalled = true + return c.SendStatus(http.StatusNoContent) + }) + + resp, err := app.Test(httptest.NewRequest(http.MethodGet, "/test", nil)) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.True(t, handlerCalled) + assert.Equal(t, http.StatusNoContent, resp.StatusCode) +} + +func TestEndTracingSpans_EndsFinalContextSpan(t *testing.T) { + t.Parallel() + + tp, spanRecorder := setupTestTracer() + defer func() { _ = tp.Shutdown(context.Background()) }() + + app := fiber.New() + mid := &TelemetryMiddleware{} + + app.Get("/test", mid.EndTracingSpans, func(c *fiber.Ctx) error { + ctx, _ := tp.Tracer("test").Start(context.Background(), "handler-span") + c.SetUserContext(ctx) + return c.SendStatus(http.StatusNoContent) + }) + + resp, err := app.Test(httptest.NewRequest(http.MethodGet, "/test", nil)) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.Eventually(t, func() bool { + return len(spanRecorder.Ended()) == 1 + }, time.Second, 10*time.Millisecond) + assert.Equal(t, "handler-span", spanRecorder.Ended()[0].Name()) +} + +// TestGetMetricsCollectionInterval tests the getMetricsCollectionInterval function. +func TestGetMetricsCollectionInterval(t *testing.T) { + tests := []struct { + name string + envValue string + expected time.Duration + }{ + { + name: "default when not set", + envValue: "", + expected: DefaultMetricsCollectionInterval, + }, + { + name: "valid duration in seconds", + envValue: "10s", + expected: 10 * time.Second, + }, + { + name: "valid duration in milliseconds", + envValue: "500ms", + expected: 500 * time.Millisecond, + }, + { + name: "valid duration in minutes", + envValue: "1m", + expected: 1 * time.Minute, + }, + { + name: "invalid format falls back to default", + envValue: "invalid", + expected: DefaultMetricsCollectionInterval, + }, + { + name: "zero value falls back to default", + envValue: "0s", + expected: DefaultMetricsCollectionInterval, + }, + { + name: "negative value falls back to default", + envValue: "-5s", + expected: DefaultMetricsCollectionInterval, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + if tt.envValue != "" { + t.Setenv("METRICS_COLLECTION_INTERVAL", tt.envValue) + } else { + t.Setenv("METRICS_COLLECTION_INTERVAL", "") + } + + result := getMetricsCollectionInterval() + assert.Equal(t, tt.expected, result) + }) + } +} + +func resetMetricsCollectorState() { + metricsCollectorMu.Lock() + defer metricsCollectorMu.Unlock() + + if metricsCollectorStarted && metricsCollectorShutdown != nil { + close(metricsCollectorShutdown) + time.Sleep(50 * time.Millisecond) + } + + metricsCollectorShutdown = nil + metricsCollectorStarted = false + metricsCollectorOnce = &sync.Once{} + metricsCollectorInitErr = nil +} + +func TestEnsureMetricsCollector_ReturnsErrorWhenMetricsFactoryNil(t *testing.T) { + resetMetricsCollectorState() + t.Cleanup(resetMetricsCollectorState) + + mid := &TelemetryMiddleware{Telemetry: &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{LibraryName: "test-library", EnableTelemetry: true}, + MeterProvider: sdkmetric.NewMeterProvider(), + }} + + err := mid.ensureMetricsCollector() + require.Error(t, err) + assert.Contains(t, err.Error(), "MetricsFactory is nil") + assert.False(t, metricsCollectorStarted) +} + +func TestEnsureMetricsCollector_NoMeterProviderReturnsNil(t *testing.T) { + resetMetricsCollectorState() + t.Cleanup(resetMetricsCollectorState) + + mid := &TelemetryMiddleware{Telemetry: &tracing.Telemetry{}} + require.NoError(t, mid.ensureMetricsCollector()) + assert.False(t, metricsCollectorStarted) +} + +func TestStopMetricsCollector_AllowsRestart(t *testing.T) { + resetMetricsCollectorState() + t.Cleanup(resetMetricsCollectorState) + + mid := &TelemetryMiddleware{Telemetry: &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{LibraryName: "test-library", EnableTelemetry: true}, + MeterProvider: sdkmetric.NewMeterProvider(), + MetricsFactory: metrics.NewNopFactory(), + }} + + require.NoError(t, mid.ensureMetricsCollector()) + assert.True(t, metricsCollectorStarted) + + StopMetricsCollector() + assert.False(t, metricsCollectorStarted) + + require.NoError(t, mid.ensureMetricsCollector()) + assert.True(t, metricsCollectorStarted) +} + +// TestExtractHTTPContext tests the ExtractHTTPContext function from tracing package. +func TestExtractHTTPContext(t *testing.T) { + ctx := context.Background() + + tp, _ := setupTestTracer() + defer func() { + _ = tp.Shutdown(ctx) + }() + + oldTracerProvider := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTracerProvider) + + traceparent := "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01" + + app := fiber.New() + + app.Get("/test", func(c *fiber.Ctx) error { + ctx := tracing.ExtractHTTPContext(c.UserContext(), c) + + spanCtx := oteltrace.SpanContextFromContext(ctx) + + if c.Get("traceparent") != "" { + assert.True(t, spanCtx.IsValid(), "Span context should be valid with traceparent header") + assert.Equal(t, "4bf92f3577b34da6a3ce929d0e0e4736", spanCtx.TraceID().String()) + assert.Equal(t, "00f067aa0ba902b7", spanCtx.SpanID().String()) + } else { + assert.False(t, spanCtx.IsValid(), "Span context should not be valid without traceparent header") + } + + return c.SendStatus(http.StatusOK) + }) + + req1, err := http.NewRequest("GET", "/test", nil) + require.NoError(t, err) + req1.Header.Set("traceparent", traceparent) + + resp1, err := app.Test(req1) + require.NoError(t, err) + defer func() { require.NoError(t, resp1.Body.Close()) }() + assert.Equal(t, http.StatusOK, resp1.StatusCode) + + req2, err := http.NewRequest("GET", "/test", nil) + require.NoError(t, err) + + resp2, err := app.Test(req2) + require.NoError(t, err) + defer func() { require.NoError(t, resp2.Body.Close()) }() + assert.Equal(t, http.StatusOK, resp2.StatusCode) +} + +// TestWithTelemetryConditionalTracePropagation tests the conditional trace propagation based on UserAgent. +func TestWithTelemetryConditionalTracePropagation(t *testing.T) { + tests := []struct { + name string + userAgent string + traceparent string + shouldPropagateTrace bool + description string + }{ + { + name: "Internal Lerian service - should propagate trace", + userAgent: "midaz/1.0.0 LerianStudio", + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + shouldPropagateTrace: true, + description: "Internal service with valid UserAgent pattern should propagate trace context", + }, + { + name: "External service - should NOT propagate trace", + userAgent: "Mozilla/5.0 (Windows NT 10.0; Win64; x64)", + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + shouldPropagateTrace: false, + description: "External browser UserAgent should create new root span", + }, + { + name: "No UserAgent - should NOT propagate trace", + userAgent: "", + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + shouldPropagateTrace: false, + description: "Missing UserAgent should create new root span", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ctx := context.Background() + + tp, spanRecorder := setupTestTracer() + defer func() { + _ = tp.Shutdown(ctx) + }() + + oldTracerProvider := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTracerProvider) + + tel := &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{ + LibraryName: "test-library", + EnableTelemetry: true, + }, + TracerProvider: tp, + } + + mid := NewTelemetryMiddleware(tel) + + app := fiber.New() + app.Use(mid.WithTelemetry(tel)) + + var capturedSpanContext oteltrace.SpanContext + app.Get("/test", func(c *fiber.Ctx) error { + capturedSpanContext = oteltrace.SpanContextFromContext(c.UserContext()) + return c.SendStatus(http.StatusOK) + }) + + req, err := http.NewRequest("GET", "/test", nil) + require.NoError(t, err) + + if tt.userAgent != "" { + req.Header.Set("User-Agent", tt.userAgent) + } + + req.Header.Set("traceparent", tt.traceparent) + + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.Equal(t, http.StatusOK, resp.StatusCode) + + spans := spanRecorder.Ended() + require.GreaterOrEqual(t, len(spans), 1, "Expected at least one span to be created") + + if tt.shouldPropagateTrace { + assert.True(t, capturedSpanContext.IsValid(), "Span context should be valid for internal services") + assert.Equal(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should match the traceparent header for internal services") + } else { + if capturedSpanContext.IsValid() { + assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should be different from traceparent header for external services") + } + } + }) + } +} + +// TestGetGRPCUserAgent tests the getGRPCUserAgent helper function. +func TestGetGRPCUserAgent(t *testing.T) { + tests := []struct { + name string + setupMetadata func() context.Context + expectedUA string + description string + }{ + { + name: "Valid user-agent in metadata", + setupMetadata: func() context.Context { + md := metadata.Pairs("user-agent", "midaz/1.0.0 LerianStudio") + return metadata.NewIncomingContext(context.Background(), md) + }, + expectedUA: "midaz/1.0.0 LerianStudio", + description: "Should extract user-agent from gRPC metadata", + }, + { + name: "No metadata in context", + setupMetadata: func() context.Context { + return context.Background() + }, + expectedUA: "", + description: "Should return empty string when no metadata present", + }, + { + name: "Metadata without user-agent", + setupMetadata: func() context.Context { + md := metadata.Pairs("authorization", "Bearer token") + return metadata.NewIncomingContext(context.Background(), md) + }, + expectedUA: "", + description: "Should return empty string when user-agent key not present", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ctx := tt.setupMetadata() + result := getGRPCUserAgent(ctx) + assert.Equal(t, tt.expectedUA, result, tt.description) + }) + } +} + +// --------------------------------------------------------------------------- +// sanitizeURL tests +// --------------------------------------------------------------------------- + +func TestSanitizeURL_NoQueryParams(t *testing.T) { + t.Parallel() + + result := sanitizeURL("https://example.com/api/v1/users") + assert.Equal(t, "https://example.com/api/v1/users", result) +} + +func TestSanitizeURL_NoSensitiveParams(t *testing.T) { + t.Parallel() + + result := sanitizeURL("https://example.com/api?page=1&limit=20") + assert.Equal(t, "https://example.com/api?page=1&limit=20", result) +} + +func TestSanitizeURL_SensitiveTokenParam(t *testing.T) { + t.Parallel() + + result := sanitizeURL("https://example.com/callback?token=secret123&state=abc") + assert.NotContains(t, result, "secret123") + assert.Contains(t, result, "state=abc") +} + +func TestSanitizeURL_SensitivePasswordParam(t *testing.T) { + t.Parallel() + + result := sanitizeURL("https://example.com/auth?password=hunter2&username=admin") + assert.NotContains(t, result, "hunter2") + assert.Contains(t, result, "username=admin") +} + +func TestSanitizeURL_InvalidURL_ReturnedAsIs(t *testing.T) { + t.Parallel() + + invalidURL := "://missing-scheme" + result := sanitizeURL(invalidURL) + assert.Equal(t, invalidURL, result) +} + +func TestSanitizeURL_InvalidURLWithSensitiveQuery_RedactsFallback(t *testing.T) { + t.Parallel() + + result := sanitizeURL("://missing-scheme?token=secret123") + assert.NotContains(t, result, "secret123") + assert.Contains(t, result, "?redacted") +} + +func TestSanitizeURL_EmptyQueryReturnsOriginal(t *testing.T) { + t.Parallel() + + original := "https://example.com/path" + result := sanitizeURL(original) + assert.Equal(t, original, result) +} + +func TestSanitizeURL_RelativePath(t *testing.T) { + t.Parallel() + + result := sanitizeURL("/api/v1/users?token=abc123") + assert.NotContains(t, result, "abc123") +} + +// TestWithTelemetryInterceptorConditionalTracePropagation tests conditional trace propagation in gRPC interceptor. +func TestWithTelemetryInterceptorConditionalTracePropagation(t *testing.T) { + tests := []struct { + name string + userAgent string + traceparent string + shouldPropagateTrace bool + description string + }{ + { + name: "Internal Lerian service via gRPC - should propagate trace", + userAgent: "midaz/1.0.0 LerianStudio", + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + shouldPropagateTrace: true, + description: "Internal gRPC service should propagate trace context", + }, + { + name: "External gRPC client - should NOT propagate trace", + userAgent: "grpc-go/1.50.0", + traceparent: "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01", + shouldPropagateTrace: false, + description: "External gRPC client should create new root span", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + ctx := context.Background() + + tp, spanRecorder := setupTestTracer() + defer func() { + _ = tp.Shutdown(ctx) + }() + + oldTracerProvider := otel.GetTracerProvider() + otel.SetTracerProvider(tp) + defer otel.SetTracerProvider(oldTracerProvider) + + tel := &tracing.Telemetry{ + TelemetryConfig: tracing.TelemetryConfig{ + LibraryName: "test-library", + EnableTelemetry: true, + }, + TracerProvider: tp, + } + + mid := NewTelemetryMiddleware(tel) + interceptor := mid.WithTelemetryInterceptor(tel) + + md := metadata.New(map[string]string{}) + if tt.userAgent != "" { + md.Set("user-agent", tt.userAgent) + } + if tt.traceparent != "" { + md.Set("traceparent", tt.traceparent) + } + ctx = metadata.NewIncomingContext(ctx, md) + + var capturedSpanContext oteltrace.SpanContext + handler := func(ctx context.Context, req any) (any, error) { + capturedSpanContext = oteltrace.SpanContextFromContext(ctx) + return "response", nil + } + + info := &grpc.UnaryServerInfo{ + FullMethod: "/test.Service/Method", + } + + _, err := interceptor(ctx, "request", info, handler) + require.NoError(t, err) + + spans := spanRecorder.Ended() + require.GreaterOrEqual(t, len(spans), 1, "Expected at least one span to be created") + + if tt.shouldPropagateTrace { + assert.True(t, capturedSpanContext.IsValid(), "Span context should be valid for internal services") + assert.Equal(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should match the traceparent for internal gRPC services") + } else { + if capturedSpanContext.IsValid() { + assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should be different from traceparent for external services") + } + } + }) + } +} From 08e5804d69c206637c7e7e829c5fa3ed3f959b11 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:30:16 -0300 Subject: [PATCH 08/26] feat(streaming): migrate streaming telemetry from lib-commons Ports emit_span, metrics, and metrics_recorders to the streaming/ package. Pure telemetry extraction with no franz-go/kafka dependency. X-Lerian-Ref: 0x1 --- streaming/emit_span.go | 68 ++++++ streaming/metrics.go | 139 ++++++++++++ streaming/metrics_recorders.go | 394 +++++++++++++++++++++++++++++++++ streaming/streaming.go | 95 ++++++++ 4 files changed, 696 insertions(+) create mode 100644 streaming/emit_span.go create mode 100644 streaming/metrics.go create mode 100644 streaming/metrics_recorders.go create mode 100644 streaming/streaming.go diff --git a/streaming/emit_span.go b/streaming/emit_span.go new file mode 100644 index 0000000..16f6f59 --- /dev/null +++ b/streaming/emit_span.go @@ -0,0 +1,68 @@ +package streaming + +import ( + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/trace" + + "github.com/LerianStudio/lib-observability/log" +) + +// tracerName is the instrumentation-library name used when the caller did +// not supply a tracer via WithTracer. Matches the per-package convention +// (see commons/rabbitmq/rabbitmq.go: otel.Tracer("rabbitmq")) so operators +// can filter on this library in tracing backends. +const tracerName = "streaming" + +// emitSpanName is the OTEL span name for each Emit invocation. Stable; a +// rename would break downstream trace filters and should be coordinated +// with TRD §7.2 + every dashboard that keys off this name. +const emitSpanName = "streaming.emit" + +// setEmitSpanAttributes sets the TRD §7.2 attribute set on the streaming.emit +// span. Called at span creation before any Execute branch runs so even error +// paths carry the full diagnostic envelope. +// +// messaging.kafka.message.key is emitted only when the package logger has +// debug enabled — keeps partition keys out of high-volume trace stores +// unless explicitly opted in. +// +// tenant.id goes on the SPAN ONLY. Metrics never receive this label (DX-D02). +// This is load-bearing: the automated cardinality test asserts it. +// +// No ctx parameter: span attributes attach via the span's own context; the +// debug check consults the logger directly. A ctx argument here would be +// unused (flagged by linter). +// +// topic is threaded from Emit (already computed once per Emit) so we avoid +// recomputing event.Topic() per span attribute set. +func (p *Producer) setEmitSpanAttributes(span trace.Span, event Event, topic string) { + if !span.IsRecording() { + // Fast path for no-op spans: building the attribute slice is pure + // waste when the backend will drop them all. IsRecording is the + // sanctioned cheap-check entry point (TRD §7.2 note + otel docs). + return + } + + span.SetAttributes( + attribute.String("messaging.system", "kafka"), + attribute.String("messaging.destination.name", topic), + // "messaging.operation.type" (modern semconv) — NOT the deprecated + // "messaging.operation" key. If semconv v1.27 is imported later, + // replace the literal with semconv.MessagingOperationTypeKey. + attribute.String("messaging.operation.type", "send"), + attribute.String("messaging.client.id", p.cfg.ClientID), + attribute.String("event.resource_type", event.ResourceType), + attribute.String("event.event_type", event.EventType), + attribute.String("tenant.id", event.TenantID), + attribute.String("streaming.producer_id", p.producerID), + ) + + if p.logger.Enabled(log.LevelDebug) { + partKey := event.PartitionKey() + if p.partFn != nil { + partKey = p.partFn(event) + } + + span.SetAttributes(attribute.String("messaging.kafka.message.key", partKey)) + } +} diff --git a/streaming/metrics.go b/streaming/metrics.go new file mode 100644 index 0000000..ffe8170 --- /dev/null +++ b/streaming/metrics.go @@ -0,0 +1,139 @@ +package streaming + +import ( + "context" + "sync" + "time" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" +) + +// Outcome label values. The "outcome" label on streaming metrics is a closed +// enum per TRD §7.1. NEVER introduce a new value without a TRD amendment: +// downstream dashboards and SLO alerts key off this set. +// +// - outcomeProduced: direct publish succeeded (CLOSED circuit, broker healthy). +// - outcomeOutboxed: circuit OPEN but outbox fallback wrote the event durably. +// - outcomeCircuitOpen: circuit OPEN and no outbox → caller got ErrCircuitOpen. +// - outcomeCallerError: preflight rejection or caller-class EmitError. +// - outcomeDLQ: publish failed with an infra class; payload went to {topic}.dlq. +// - outcomeOutboxFailed: outbox fallback attempted but the outbox write +// itself failed — distinct from outcomeCallerError because the root +// cause is outbox infrastructure, not caller input. +const ( + outcomeProduced = "produced" + outcomeOutboxed = "outboxed" + outcomeCircuitOpen = "circuit_open" + outcomeCallerError = "caller_error" + outcomeDLQ = "dlq" + outcomeOutboxFailed = "outbox_failed" +) + +// Metric names. Kept colocated with the recorder so a TRD rename is a one-file +// edit. Names match TRD §7.1 verbatim — do not reword casually; they are the +// public contract for Grafana dashboards and alert rules. +const ( + metricNameEmitted = "streaming_emitted_total" + metricNameEmitDurationMS = "streaming_emit_duration_ms" + metricNameDLQTotal = "streaming_dlq_total" + metricNameDLQFailed = "streaming_dlq_publish_failed_total" + metricNameOutboxRouted = "streaming_outbox_routed_total" + metricNameCircuitState = "streaming_circuit_state" +) + +// streamingMetrics holds lazy-initialised OTEL instruments for the streaming +// package. Mirrors the pattern in commons/circuitbreaker/manager.go:85-103 +// but per-instrument-lazy (instead of one-shot init) so a nil factory logs +// once and subsequent callers pay zero cost beyond the sync.Once check. +// +// Nil-safety rules (every exported record* method enforces these): +// - nil receiver → no-op, no panic +// - nil factory → warn-once log, then no-op forever after +// - builder creation error → log at ERROR level, record is a no-op; we +// do NOT retry because a creation failure indicates a misconfigured +// meter that retries won't fix +// +// Concurrency: sync.Once protects each instrument's first build. Reads of +// the *Builder pointer after the Once runs are safe because sync.Once +// establishes happens-before for the write. +// +// Per-instrument record methods live in metrics_recorders.go — split from +// this file to keep both under the 300-line cap. +type streamingMetrics struct { + // factory is the user-supplied metrics factory. MAY be nil — see warnOnce. + factory *metrics.MetricsFactory + + // logger is never nil — newStreamingMetrics substitutes log.NewNop() when + // the caller passes nil, mirroring the broader package convention. + logger log.Logger + + // Instrument builders + their once-guards. A separate Once per instrument + // keeps build failures isolated: if histogram creation fails, counters + // still work. + emittedOnce sync.Once + emittedCounter *metrics.CounterBuilder + emittedCache labelSetCache // topic+operation+outcome → labeled builder + + emitDurationOnce sync.Once + emitDurationHistogram *metrics.HistogramBuilder + emitDurationCache labelSetCache // topic+outcome → labeled builder + + dlqOnce sync.Once + dlqCounter *metrics.CounterBuilder + dlqCache labelSetCache // topic+error_class → labeled builder + + dlqFailedOnce sync.Once + dlqFailedCounter *metrics.CounterBuilder + dlqFailedCache labelSetCache // topic → labeled builder + + outboxRoutedOnce sync.Once + outboxRoutedCounter *metrics.CounterBuilder + outboxRoutedCache labelSetCache // topic+reason → labeled builder + + circuitStateOnce sync.Once + circuitStateGauge *metrics.GaugeBuilder + + // warnOnce guards the single "metrics disabled" WARN the Producer emits + // when factory == nil at first-record time. Subsequent calls are silent. + warnOnce sync.Once +} + +// newStreamingMetrics constructs a streamingMetrics whose behaviour is +// determined by factory: +// +// - factory != nil → real recording; instruments build lazily on first touch. +// - factory == nil → all record* methods are no-ops after a single WARN log. +// +// logger is substituted with log.NewNop() when nil so record* methods can +// unconditionally call logger.Log without guarding. +func newStreamingMetrics(factory *metrics.MetricsFactory, logger log.Logger) *streamingMetrics { + if logger == nil { + logger = log.NewNop() + } + + return &streamingMetrics{ + factory: factory, + logger: logger, + } +} + +// warnNilFactoryOnce emits a single WARN log when the metrics factory is nil. +// Subsequent calls are silent. The guard lives inside sync.Once so repeated +// nil-factory record* calls don't spam logs. +func (m *streamingMetrics) warnNilFactoryOnce(ctx context.Context) { + if m == nil { + return + } + + m.warnOnce.Do(func() { + m.logger.Log(ctx, log.LevelWarn, + "streaming: metrics factory is nil; metrics are disabled") + }) +} + +// durationMilliseconds converts a time.Duration to int64 milliseconds. A +// named helper so the units are obvious at call sites. +func durationMilliseconds(d time.Duration) int64 { + return d.Milliseconds() +} diff --git a/streaming/metrics_recorders.go b/streaming/metrics_recorders.go new file mode 100644 index 0000000..0e371bf --- /dev/null +++ b/streaming/metrics_recorders.go @@ -0,0 +1,394 @@ +package streaming + +import ( + "context" + "sync" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" +) + +// This file holds the six record* methods that write to the OTEL +// instruments. Split from metrics.go so neither file crosses the 300-line +// cap and so the ceremonial-but-verbose lazy-init pattern is easy to skim +// top-down. +// +// Per-label-set builder caching (T6.1 hardening): the *Builder values +// returned by (*MetricsFactory).Counter/Histogram/Gauge cache the +// underlying OTEL instruments, but WithLabels/WithAttributes allocate a +// fresh builder on every call. On a 10k-RPS service that produces ~40k +// small heap objects per second. We cache a per-labelset builder keyed +// by a stable string (strings are hashable; attribute-set keys would +// require manual fingerprinting), reusing it across record calls. +// Topic + outcome cardinality is bounded per-process, so the cache is +// bounded too. + +// labelSetCache is a concurrency-safe map of stable-key → *Builder. The +// concrete builder type is captured as `any` so the same cache shape +// fits counters, histograms, and gauges without generics bleed-through. +type labelSetCache struct { + // m is keyed by a composed string. Value is one of: + // *metrics.CounterBuilder, *metrics.HistogramBuilder, *metrics.GaugeBuilder + // depending on which record* populated it. + m sync.Map +} + +// recordEmitted increments streaming_emitted_total by 1 with the given +// topic/operation/outcome label set. No-op when m is nil or factory is nil +// (latter also emits a WARN once). +func (m *streamingMetrics) recordEmitted(ctx context.Context, topic, operation, outcome string) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.emittedOnce.Do(func() { + builder, err := m.factory.Counter(metrics.Metric{ + Name: metricNameEmitted, + Unit: "1", + Description: "Total streaming emits by topic, operation, and outcome.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create emitted counter", + log.String("metric", metricNameEmitted), log.Err(err)) + + return + } + + m.emittedCounter = builder + }) + + if m.emittedCounter == nil { + return + } + + // Cache the labeled builder keyed by (topic, operation, outcome). The + // hot path re-uses a single *CounterBuilder per tuple instead of + // allocating one via WithLabels on every Add. + key := topic + "\x00" + operation + "\x00" + outcome + + builder := m.getOrBuildCounter(&m.emittedCache, key, m.emittedCounter, map[string]string{ + "topic": topic, + "operation": operation, + "outcome": outcome, + }) + if builder == nil { + return + } + + if err := builder.Add(ctx, 1); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record emitted", + log.String("metric", metricNameEmitted), log.Err(err)) + } +} + +// recordEmitDuration adds a sample to streaming_emit_duration_ms. The unit is +// milliseconds to match the TRD name; callers pass time.Since(start).Milliseconds(). +func (m *streamingMetrics) recordEmitDuration(ctx context.Context, topic, outcome string, durationMs int64) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.emitDurationOnce.Do(func() { + builder, err := m.factory.Histogram(metrics.Metric{ + Name: metricNameEmitDurationMS, + Unit: "ms", + Description: "Streaming emit duration in milliseconds by topic and outcome.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create duration histogram", + log.String("metric", metricNameEmitDurationMS), log.Err(err)) + + return + } + + m.emitDurationHistogram = builder + }) + + if m.emitDurationHistogram == nil { + return + } + + key := topic + "\x00" + outcome + + builder := m.getOrBuildHistogram(&m.emitDurationCache, key, m.emitDurationHistogram, map[string]string{ + "topic": topic, + "outcome": outcome, + }) + if builder == nil { + return + } + + if err := builder.Record(ctx, durationMs); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record duration", + log.String("metric", metricNameEmitDurationMS), log.Err(err)) + } +} + +// recordDLQ increments streaming_dlq_total by 1. Called after a successful +// DLQ publish; the error_class label encodes which of the 8 ErrorClass values +// caused the quarantine. +func (m *streamingMetrics) recordDLQ(ctx context.Context, topic, errorClass string) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.dlqOnce.Do(func() { + builder, err := m.factory.Counter(metrics.Metric{ + Name: metricNameDLQTotal, + Unit: "1", + Description: "Total events quarantined to the per-topic DLQ.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create dlq counter", + log.String("metric", metricNameDLQTotal), log.Err(err)) + + return + } + + m.dlqCounter = builder + }) + + if m.dlqCounter == nil { + return + } + + key := topic + "\x00" + errorClass + + builder := m.getOrBuildCounter(&m.dlqCache, key, m.dlqCounter, map[string]string{ + "topic": topic, + "error_class": errorClass, + }) + if builder == nil { + return + } + + if err := builder.Add(ctx, 1); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record dlq", + log.String("metric", metricNameDLQTotal), log.Err(err)) + } +} + +// recordDLQFailed increments streaming_dlq_publish_failed_total by 1. Called +// when the DLQ publish itself fails — the alerting signal operators watch +// because a failing DLQ means correlated broker failure across both source +// and DLQ topics. +func (m *streamingMetrics) recordDLQFailed(ctx context.Context, topic string) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.dlqFailedOnce.Do(func() { + builder, err := m.factory.Counter(metrics.Metric{ + Name: metricNameDLQFailed, + Unit: "1", + Description: "Total DLQ publish attempts that failed themselves.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create dlq_failed counter", + log.String("metric", metricNameDLQFailed), log.Err(err)) + + return + } + + m.dlqFailedCounter = builder + }) + + if m.dlqFailedCounter == nil { + return + } + + builder := m.getOrBuildCounter(&m.dlqFailedCache, topic, m.dlqFailedCounter, map[string]string{ + "topic": topic, + }) + if builder == nil { + return + } + + if err := builder.Add(ctx, 1); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record dlq_failed", + log.String("metric", metricNameDLQFailed), log.Err(err)) + } +} + +// recordOutboxRouted increments streaming_outbox_routed_total by 1. Called +// when a publish falls back to the outbox. reason is a closed set: +// "circuit_open" (the only T6 caller) or "broker_error" (reserved for v1.1). +func (m *streamingMetrics) recordOutboxRouted(ctx context.Context, topic, reason string) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.outboxRoutedOnce.Do(func() { + builder, err := m.factory.Counter(metrics.Metric{ + Name: metricNameOutboxRouted, + Unit: "1", + Description: "Total events routed to the outbox fallback by topic and reason.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create outbox_routed counter", + log.String("metric", metricNameOutboxRouted), log.Err(err)) + + return + } + + m.outboxRoutedCounter = builder + }) + + if m.outboxRoutedCounter == nil { + return + } + + key := topic + "\x00" + reason + + builder := m.getOrBuildCounter(&m.outboxRoutedCache, key, m.outboxRoutedCounter, map[string]string{ + "topic": topic, + "reason": reason, + }) + if builder == nil { + return + } + + if err := builder.Add(ctx, 1); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record outbox_routed", + log.String("metric", metricNameOutboxRouted), log.Err(err)) + } +} + +// recordCircuitState sets the streaming_circuit_state gauge. state is one of +// flagCBClosed / flagCBHalfOpen / flagCBOpen (0/1/2). The instrument has no +// labels — a single gauge per-process is sufficient. +// +// TRD §7.1 labels this "Int64UpDownCounter (gauge-like)". The underlying +// metrics factory only exposes Int64Gauge; semantically equivalent (both +// emit the current value, not a delta). +func (m *streamingMetrics) recordCircuitState(ctx context.Context, state int32) { + if m == nil { + return + } + + if m.factory == nil { + m.warnNilFactoryOnce(ctx) + + return + } + + m.circuitStateOnce.Do(func() { + builder, err := m.factory.Gauge(metrics.Metric{ + Name: metricNameCircuitState, + Unit: "1", + Description: "Circuit breaker state: 0=closed, 1=half-open, 2=open.", + }) + if err != nil { + m.logger.Log(ctx, log.LevelError, "streaming: metrics: create circuit_state gauge", + log.String("metric", metricNameCircuitState), log.Err(err)) + + return + } + + m.circuitStateGauge = builder + }) + + if m.circuitStateGauge == nil { + return + } + + // circuit_state has no labels, so there is nothing to cache; the + // labeled builder would be identical to the base builder. + if err := m.circuitStateGauge.Set(ctx, int64(state)); err != nil { + m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record circuit_state", + log.String("metric", metricNameCircuitState), log.Err(err)) + } +} + +// getOrBuildCounter returns a *CounterBuilder for the given labelset, +// caching it in cache keyed by key. First-hit path builds a new builder +// via WithLabels; subsequent hits reuse the same builder pointer. Returns +// nil if WithLabels returned a nil builder (shouldn't happen in practice). +func (m *streamingMetrics) getOrBuildCounter( + cache *labelSetCache, + key string, + base *metrics.CounterBuilder, + labels map[string]string, +) *metrics.CounterBuilder { + if cache == nil { + return nil + } + + if v, ok := cache.m.Load(key); ok { + if builder, ok := v.(*metrics.CounterBuilder); ok { + return builder + } + } + + built := base.WithLabels(labels) + if built == nil { + return nil + } + + actual, _ := cache.m.LoadOrStore(key, built) + if builder, ok := actual.(*metrics.CounterBuilder); ok { + return builder + } + + return built +} + +// getOrBuildHistogram mirrors getOrBuildCounter for histogram builders. +func (m *streamingMetrics) getOrBuildHistogram( + cache *labelSetCache, + key string, + base *metrics.HistogramBuilder, + labels map[string]string, +) *metrics.HistogramBuilder { + if cache == nil { + return nil + } + + if v, ok := cache.m.Load(key); ok { + if builder, ok := v.(*metrics.HistogramBuilder); ok { + return builder + } + } + + built := base.WithLabels(labels) + if built == nil { + return nil + } + + actual, _ := cache.m.LoadOrStore(key, built) + if builder, ok := actual.(*metrics.HistogramBuilder); ok { + return builder + } + + return built +} diff --git a/streaming/streaming.go b/streaming/streaming.go new file mode 100644 index 0000000..b7f4d26 --- /dev/null +++ b/streaming/streaming.go @@ -0,0 +1,95 @@ +package streaming + +import ( + "encoding/json" + "time" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "go.opentelemetry.io/otel/trace" +) + +// ProducerConfig holds the configuration values referenced by telemetry instrumentation. +// Only fields needed for span attributes and metrics are kept here; kafka-client +// configuration lives in the service that constructs the producer. +type ProducerConfig struct { + // ClientID is the Kafka client identifier recorded on streaming.emit spans. + ClientID string +} + +// Event is the CloudEvents-aligned envelope produced by a service method. +// Field names are spelled out and free of Kafka/AMQP vocabulary. +type Event struct { + TenantID string + ResourceType string + EventType string + EventID string + SchemaVersion string + Timestamp time.Time + Source string + + Subject string + DataContentType string + DataSchema string + + // SystemEvent marks this event as platform-level (not tenant-scoped). + SystemEvent bool + Payload json.RawMessage +} + +// Topic returns the derived Kafka topic name for this event. +// Base form: "lerian.streaming..". +func (e *Event) Topic() string { + if e == nil { + return "" + } + + return topicPrefix + e.ResourceType + "." + e.EventType +} + +const topicPrefix = "lerian.streaming." + +// PartitionKey returns the default Kafka partition key for this event. +func (e *Event) PartitionKey() string { + if e == nil { + return "" + } + + if e.SystemEvent { + return "system:" + e.EventType + } + + return e.TenantID +} + +// Producer holds the telemetry-relevant state for a streaming producer. +// It does NOT hold a kafka client — that lives in the service layer. +type Producer struct { + cfg ProducerConfig + producerID string + logger log.Logger + tracer trace.Tracer + partFn func(Event) string + metrics *streamingMetrics +} + +// NewProducer constructs a Producer with the given telemetry configuration. +// factory may be nil — in that case metrics are disabled and a single WARN is logged. +func NewProducer(cfg ProducerConfig, producerID string, logger log.Logger, tracer trace.Tracer, factory *metrics.MetricsFactory) *Producer { + if logger == nil { + logger = log.NewNop() + } + + return &Producer{ + cfg: cfg, + producerID: producerID, + logger: logger, + tracer: tracer, + metrics: newStreamingMetrics(factory, logger), + } +} + +// WithPartitionKey overrides the default partition key function for this producer. +func (p *Producer) WithPartitionKey(fn func(Event) string) { + p.partFn = fn +} From 8ecd8f1e56fb64af444875e56d4f3ec81708db5d Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:30:23 -0300 Subject: [PATCH 09/26] test: port unit test suite from lib-commons Ports test files for assert, log, runtime, tracing, and zap packages. Remaps all imports from lib-commons paths to lib-observability and adds go:build unit tags. X-Lerian-Ref: 0x1 --- assert/assert_extended_test.go | 585 ++++++++++++++ assert/assert_test.go | 591 ++++++++++++++ assert/predicates_test.go | 334 ++++++++ log/log_test.go | 680 +++++++++++++++++ log/sanitizer_test.go | 287 +++++++ runtime/goroutine_test.go | 448 +++++++++++ runtime/helpers_test.go | 56 ++ runtime/log_mode_link_test.go | 48 ++ runtime/metrics_test.go | 58 ++ runtime/policy_test.go | 110 +++ runtime/recover_test.go | 186 +++++ runtime/tracing_test.go | 457 +++++++++++ tracing/obfuscation_test.go | 1042 +++++++++++++++++++++++++ tracing/otel_test.go | 1312 ++++++++++++++++++++++++++++++++ tracing/v2_test.go | 176 +++++ zap/injector_test.go | 155 ++++ zap/zap_test.go | 618 +++++++++++++++ 17 files changed, 7143 insertions(+) create mode 100644 assert/assert_extended_test.go create mode 100644 assert/assert_test.go create mode 100644 assert/predicates_test.go create mode 100644 log/log_test.go create mode 100644 log/sanitizer_test.go create mode 100644 runtime/goroutine_test.go create mode 100644 runtime/helpers_test.go create mode 100644 runtime/log_mode_link_test.go create mode 100644 runtime/metrics_test.go create mode 100644 runtime/policy_test.go create mode 100644 runtime/recover_test.go create mode 100644 runtime/tracing_test.go create mode 100644 tracing/obfuscation_test.go create mode 100644 tracing/otel_test.go create mode 100644 tracing/v2_test.go create mode 100644 zap/injector_test.go create mode 100644 zap/zap_test.go diff --git a/assert/assert_extended_test.go b/assert/assert_extended_test.go new file mode 100644 index 0000000..a657867 --- /dev/null +++ b/assert/assert_extended_test.go @@ -0,0 +1,585 @@ +//go:build unit + +package assert + +import ( + "context" + "strings" + "testing" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/log" + libRuntime "github.com/LerianStudio/lib-observability/runtime" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/metric/noop" + tracesdk "go.opentelemetry.io/otel/sdk/trace" + + "github.com/LerianStudio/lib-observability/metrics" +) + +func newTestMetricsFactory(t *testing.T) *metrics.MetricsFactory { + t.Helper() + + meter := noop.NewMeterProvider().Meter("test") + factory, err := metrics.NewMetricsFactory(meter, &log.NopLogger{}) + require.NoError(t, err, "newTestMetricsFactory failed") + + return factory +} + +// --- AssertionError Tests --- + +func TestAssertionError_NilReceiver(t *testing.T) { + t.Parallel() + + var entry *AssertionError + msg := entry.Error() + require.Equal(t, ErrAssertionFailed.Error(), msg) +} + +func TestAssertionError_WithoutDetails(t *testing.T) { + t.Parallel() + + entry := &AssertionError{ + Assertion: "That", + Message: "some message", + Component: "comp", + Operation: "op", + Details: "", + } + + msg := entry.Error() + require.Equal(t, "assertion failed: some message", msg) +} + +func TestAssertionError_WithDetails(t *testing.T) { + t.Parallel() + + entry := &AssertionError{ + Assertion: "NotNil", + Message: "value required", + Component: "comp", + Operation: "op", + Details: " key=value", + } + + msg := entry.Error() + require.Contains(t, msg, "assertion failed: value required") + require.Contains(t, msg, "key=value") +} + +func TestAssertionError_Unwrap(t *testing.T) { + t.Parallel() + + entry := &AssertionError{Message: "test"} + require.ErrorIs(t, entry, ErrAssertionFailed) +} + +// --- Halt Tests --- + +func TestHalt_NilError_NoEffect(t *testing.T) { + t.Parallel() + + asserter := New(context.Background(), nil, "test", "halt") + asserter.Halt(nil) +} + +// --- truncateValue Tests --- + +func TestTruncateValue_ShortValue(t *testing.T) { + t.Parallel() + + result := truncateValue("hello") + require.Equal(t, "hello", result) +} + +func TestTruncateValue_ExactMaxLength(t *testing.T) { + t.Parallel() + + val := strings.Repeat("a", maxValueLength) + result := truncateValue(val) + require.Equal(t, val, result) +} + +func TestTruncateValue_LongValue(t *testing.T) { + t.Parallel() + + val := strings.Repeat("b", maxValueLength+50) + result := truncateValue(val) + require.Len(t, result, maxValueLength+len("... (truncated 50 chars)")) + require.Contains(t, result, "... (truncated 50 chars)") +} + +func TestTruncateValue_NonStringType(t *testing.T) { + t.Parallel() + + result := truncateValue(42) + require.Equal(t, "42", result) +} + +// --- values Tests --- + +func TestValues_NilAsserter(t *testing.T) { + t.Parallel() + + var asserter *Asserter + ctx, logger, component, operation := asserter.values(context.Background()) + require.NotNil(t, ctx) + require.Nil(t, logger) + require.Empty(t, component) + require.Empty(t, operation) +} + +func TestValues_NilAsserterNilCtx(t *testing.T) { + t.Parallel() + + var asserter *Asserter + //nolint:staticcheck // intentionally passing nil ctx + ctx, _, _, _ := asserter.values(nil) + require.NotNil(t, ctx) +} + +func TestValues_WithAsserterNilCtx(t *testing.T) { + t.Parallel() + + logger := &testLogger{} + asserter := New(context.Background(), logger, "comp", "op") + //nolint:staticcheck // intentionally passing nil ctx + ctx, l, c, o := asserter.values(nil) + require.NotNil(t, ctx) + require.Equal(t, logger, l) + require.Equal(t, "comp", c) + require.Equal(t, "op", o) +} + +func TestValues_BothNilFallsToBackground(t *testing.T) { + t.Parallel() + + asserter := &Asserter{ + ctx: nil, + logger: nil, + component: "", + operation: "", + } + //nolint:staticcheck // intentionally passing nil ctx + ctx, _, _, _ := asserter.values(nil) + require.NotNil(t, ctx) +} + +// --- SanitizeMetricLabel Tests --- + +func TestSanitizeMetricLabel_ShortLabel(t *testing.T) { + t.Parallel() + + result := constant.SanitizeMetricLabel("short") + require.Equal(t, "short", result) +} + +func TestSanitizeMetricLabel_ExactMaxLength(t *testing.T) { + t.Parallel() + + val := strings.Repeat("x", constant.MaxMetricLabelLength) + result := constant.SanitizeMetricLabel(val) + require.Equal(t, val, result) +} + +func TestSanitizeMetricLabel_TruncatesLongLabel(t *testing.T) { + t.Parallel() + + val := strings.Repeat("y", constant.MaxMetricLabelLength+20) + result := constant.SanitizeMetricLabel(val) + require.Len(t, result, constant.MaxMetricLabelLength) + require.Equal(t, strings.Repeat("y", constant.MaxMetricLabelLength), result) +} + +// --- assertionStatusMessage Tests --- + +func TestAssertionStatusMessage_ComponentAndOperation(t *testing.T) { + t.Parallel() + + msg := assertionStatusMessage("comp", "op") + require.Equal(t, "assertion failed in comp/op", msg) +} + +func TestAssertionStatusMessage_ComponentOnly(t *testing.T) { + t.Parallel() + + msg := assertionStatusMessage("comp", "") + require.Equal(t, "assertion failed in comp", msg) +} + +func TestAssertionStatusMessage_OperationOnly(t *testing.T) { + t.Parallel() + + msg := assertionStatusMessage("", "op") + require.Equal(t, "assertion failed in op", msg) +} + +func TestAssertionStatusMessage_Neither(t *testing.T) { + t.Parallel() + + msg := assertionStatusMessage("", "") + require.Equal(t, "assertion failed", msg) +} + +// --- InitAssertionMetrics / ResetAssertionMetrics / GetAssertionMetrics Tests --- + +func TestInitAssertionMetrics_NilFactory(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + InitAssertionMetrics(nil) + require.Nil(t, GetAssertionMetrics()) +} + +func TestInitAssertionMetrics_ValidFactory(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + factory := newTestMetricsFactory(t) + InitAssertionMetrics(factory) + + am := GetAssertionMetrics() + require.NotNil(t, am) + require.Equal(t, factory, am.factory) +} + +func TestInitAssertionMetrics_DoubleInit_NoOverwrite(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + factory1 := newTestMetricsFactory(t) + factory2 := newTestMetricsFactory(t) + + InitAssertionMetrics(factory1) + InitAssertionMetrics(factory2) + + am := GetAssertionMetrics() + require.NotNil(t, am) + require.Equal(t, factory1, am.factory, "second init should not overwrite") +} + +func TestResetAssertionMetrics(t *testing.T) { + // Not parallel - modifies global state. + factory := newTestMetricsFactory(t) + InitAssertionMetrics(factory) + + ResetAssertionMetrics() + require.Nil(t, GetAssertionMetrics()) +} + +// --- RecordAssertionFailed Tests --- + +func TestRecordAssertionFailed_NilMetrics(t *testing.T) { + t.Parallel() + + var am *AssertionMetrics + am.RecordAssertionFailed(context.Background(), "comp", "op", "That") +} + +func TestRecordAssertionFailed_NilFactory(t *testing.T) { + t.Parallel() + + am := &AssertionMetrics{factory: nil} + am.RecordAssertionFailed(context.Background(), "comp", "op", "That") +} + +func TestRecordAssertionFailed_WithFactory(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + factory := newTestMetricsFactory(t) + InitAssertionMetrics(factory) + + am := GetAssertionMetrics() + require.NotNil(t, am) + am.RecordAssertionFailed(context.Background(), "comp", "op", "That") +} + +// --- recordAssertionMetric Tests --- + +func TestRecordAssertionMetric_NoMetricsInitialized(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + recordAssertionMetric(context.Background(), "comp", "op", "That") +} + +func TestRecordAssertionMetric_WithMetrics(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + factory := newTestMetricsFactory(t) + InitAssertionMetrics(factory) + + recordAssertionMetric(context.Background(), "comp", "op", "NotNil") +} + +// --- recordAssertionToSpan Tests --- + +func TestRecordAssertionToSpan_NoSpanInContext(t *testing.T) { + t.Parallel() + + recordAssertionToSpan(context.Background(), "That", "test message", nil, "comp", "op") +} + +func TestRecordAssertionToSpan_WithRecordingSpan(t *testing.T) { + t.Parallel() + + tp := tracesdk.NewTracerProvider() + tracer := tp.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + defer span.End() + + recordAssertionToSpan(ctx, "NotNil", "value is nil", nil, "comp", "op") +} + +func TestRecordAssertionToSpan_WithStack(t *testing.T) { + t.Parallel() + + tp := tracesdk.NewTracerProvider() + tracer := tp.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + defer span.End() + + stack := []byte("goroutine 1:\n main.go:10") + recordAssertionToSpan(ctx, "That", "condition false", stack, "comp", "op") +} + +func TestRecordAssertionToSpan_EmptyComponentAndOperation(t *testing.T) { + t.Parallel() + + tp := tracesdk.NewTracerProvider() + tracer := tp.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + defer span.End() + + recordAssertionToSpan(ctx, "Never", "unreachable", nil, "", "") +} + +// --- logAssertion Tests --- + +func TestLogAssertion_WithNilLogger(t *testing.T) { + t.Parallel() + + logAssertion(nil, "test message for stderr") +} + +func TestLogAssertion_WithLogger(t *testing.T) { + t.Parallel() + + logger := &testLogger{} + logAssertion(logger, "test message for logger") + require.Len(t, logger.messages, 1) + require.Equal(t, "test message for logger", logger.messages[0]) +} + +// --- New Tests --- + +func TestNew_NilContext(t *testing.T) { + t.Parallel() + + //nolint:staticcheck // intentionally passing nil ctx + asserter := New(nil, nil, "comp", "op") + require.NotNil(t, asserter) + require.NotNil(t, asserter.ctx) +} + +func TestNew_WithAllFields(t *testing.T) { + t.Parallel() + + logger := &testLogger{} + ctx := context.Background() + asserter := New(ctx, logger, "comp", "op") + require.Equal(t, ctx, asserter.ctx) + require.Equal(t, logger, asserter.logger) + require.Equal(t, "comp", asserter.component) + require.Equal(t, "op", asserter.operation) +} + +// --- formatKeyValueLines Tests --- + +func TestFormatKeyValueLines_Empty(t *testing.T) { + t.Parallel() + + result := formatKeyValueLines(nil) + require.Empty(t, result) +} + +func TestFormatKeyValueLines_SinglePair(t *testing.T) { + t.Parallel() + + result := formatKeyValueLines([]any{"key", "value"}) + require.Equal(t, " key=value", result) +} + +func TestFormatKeyValueLines_MultiplePairs(t *testing.T) { + t.Parallel() + + result := formatKeyValueLines([]any{"k1", "v1", "k2", "v2"}) + require.Contains(t, result, "k1=v1") + require.Contains(t, result, "k2=v2") +} + +func TestFormatKeyValueLines_OddCount(t *testing.T) { + t.Parallel() + + result := formatKeyValueLines([]any{"k1", "v1", "orphan"}) + require.Contains(t, result, "k1=v1") + require.Contains(t, result, "orphan=MISSING_VALUE") +} + +// --- recordAssertionObservability Tests --- + +func TestRecordAssertionObservability_NoMetricsNoSpan(t *testing.T) { + // Not parallel - modifies global state. + ResetAssertionMetrics() + defer ResetAssertionMetrics() + + recordAssertionObservability(context.Background(), "That", "test", nil, "comp", "op") +} + +// --- isNil Tests --- + +func TestIsNil_UntypedNil(t *testing.T) { + t.Parallel() + require.True(t, isNil(nil)) +} + +func TestIsNil_TypedNilPointer(t *testing.T) { + t.Parallel() + + var p *int + require.True(t, isNil(p), "typed nil pointer should be nil") +} + +func TestIsNil_NonNilInt(t *testing.T) { + t.Parallel() + require.False(t, isNil(42)) +} + +func TestIsNil_NonNilString(t *testing.T) { + t.Parallel() + require.False(t, isNil("hello")) +} + +func TestIsNil_NonNilStruct(t *testing.T) { + t.Parallel() + + type s struct{} + require.False(t, isNil(s{})) +} + +// --- shouldIncludeStack Tests --- + +func TestShouldIncludeStack_NonProduction(t *testing.T) { + // Not parallel - uses t.Setenv and depends on runtime global state. + t.Setenv("ENV", "development") + t.Setenv("GO_ENV", "") + + require.True(t, shouldIncludeStack()) +} + +func TestShouldIncludeStack_ProductionENV(t *testing.T) { + // Not parallel - uses t.Setenv and depends on runtime global state. + t.Setenv("ENV", "production") + t.Setenv("GO_ENV", "") + + require.False(t, shouldIncludeStack()) +} + +func TestShouldIncludeStack_ProductionGOENV(t *testing.T) { + // Not parallel - uses t.Setenv and depends on runtime global state. + t.Setenv("ENV", "") + t.Setenv("GO_ENV", "production") + + require.False(t, shouldIncludeStack()) +} + +func TestShouldIncludeStack_ProductionCaseInsensitive(t *testing.T) { + // Not parallel - uses t.Setenv and depends on runtime global state. + t.Setenv("ENV", "Production") + t.Setenv("GO_ENV", "") + + require.False(t, shouldIncludeStack()) +} + +func TestShouldIncludeStack_RuntimeProductionMode(t *testing.T) { + // Not parallel - modifies global state. + t.Setenv("ENV", "") + t.Setenv("GO_ENV", "") + + libRuntime.SetProductionMode(true) + defer libRuntime.SetProductionMode(false) + + require.False(t, shouldIncludeStack(), "should suppress stacks when runtime.IsProductionMode() is true") +} + +func TestShouldIncludeStack_RuntimeProductionModeOverridesEnv(t *testing.T) { + // Not parallel - modifies global state. + t.Setenv("ENV", "development") + t.Setenv("GO_ENV", "development") + + libRuntime.SetProductionMode(true) + defer libRuntime.SetProductionMode(false) + + require.False(t, shouldIncludeStack(), "runtime production mode should override env vars") +} + +func TestShouldIncludeStack_EnvFallbackWhenRuntimeNotSet(t *testing.T) { + // Not parallel - modifies global state. + libRuntime.SetProductionMode(false) + defer libRuntime.SetProductionMode(false) + + t.Setenv("ENV", "production") + t.Setenv("GO_ENV", "") + + require.False(t, shouldIncludeStack(), "env var fallback should still detect production") +} + +func TestShouldIncludeStack_NonProductionWhenBothDisabled(t *testing.T) { + // Not parallel - modifies global state. + libRuntime.SetProductionMode(false) + defer libRuntime.SetProductionMode(false) + + t.Setenv("ENV", "development") + t.Setenv("GO_ENV", "") + + require.True(t, shouldIncludeStack(), "should include stacks in non-production mode") +} + +// --- withContextPairs Tests --- + +func TestWithContextPairs_AllFields(t *testing.T) { + t.Parallel() + + result := withContextPairs("That", "comp", "op", []any{"k1", "v1"}) + require.Len(t, result, 8) +} + +func TestWithContextPairs_EmptyComponent(t *testing.T) { + t.Parallel() + + result := withContextPairs("NotNil", "", "op", nil) + require.Len(t, result, 4) +} + +func TestWithContextPairs_EmptyOperation(t *testing.T) { + t.Parallel() + + result := withContextPairs("NotNil", "comp", "", nil) + require.Len(t, result, 4) +} + +func TestWithContextPairs_BothEmpty(t *testing.T) { + t.Parallel() + + result := withContextPairs("Never", "", "", nil) + require.Len(t, result, 2) +} diff --git a/assert/assert_test.go b/assert/assert_test.go new file mode 100644 index 0000000..5b568ea --- /dev/null +++ b/assert/assert_test.go @@ -0,0 +1,591 @@ +//go:build unit + +package assert + +import ( + "context" + "errors" + "math" + "testing" + + "github.com/LerianStudio/lib-observability/log" + "github.com/shopspring/decimal" + "github.com/stretchr/testify/require" +) + +// errTest is a test error for assertions. +var errTest = errors.New("test error") + +// errSpecificTest is a specific test error for assertions. +var errSpecificTest = errors.New("specific test error") + +type testLogger struct { + messages []string +} + +func (l *testLogger) Log(_ context.Context, _ log.Level, msg string, _ ...log.Field) { + l.messages = append(l.messages, msg) +} + +func newTestAsserter(logger Logger) *Asserter { + return New(context.Background(), logger, "test-component", "test-operation") +} + +func newTestAsserterWithLogger() (*Asserter, *testLogger) { + logger := &testLogger{} + return newTestAsserter(logger), logger +} + +// TestThat_Pass verifies That returns nil when condition is true. +func TestThat_Pass(t *testing.T) { + t.Parallel() + + a := newTestAsserter(nil) + require.NoError(t, a.That(context.Background(), true, "should not fail")) +} + +// TestThat_Fail verifies That returns an error when condition is false. +func TestThat_Fail(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.That(context.Background(), false, "should fail") + require.Error(t, err) + require.ErrorIs(t, err, ErrAssertionFailed) +} + +// TestThat_ErrorMessage verifies the error message contains the expected content. +func TestThat_ErrorMessage(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.That(context.Background(), false, "test message", "key1", "value1", "key2", 42) + require.Error(t, err) + msg := err.Error() + require.Contains(t, msg, "assertion failed:") + require.Contains(t, msg, "test message") + require.Contains(t, msg, "assertion=That") + require.Contains(t, msg, "key1=value1") + require.Contains(t, msg, "key2=42") +} + +// TestThat_LogIncludesStackTrace verifies stack trace is logged in non-production. +func TestThat_LogIncludesStackTrace(t *testing.T) { + t.Setenv("ENV", "") + t.Setenv("GO_ENV", "") + + a, logger := newTestAsserterWithLogger() + err := a.That(context.Background(), false, "test message", "key1", "value1") + require.Error(t, err) + require.NotEmpty(t, logger.messages) + require.Contains(t, logger.messages[0], "ASSERTION FAILED") + require.Len(t, logger.messages, 2, "should have assertion failure + stack trace logs") + require.Contains(t, logger.messages[1], "assertion stack trace") +} + +// TestNotNil_Pass verifies NotNil returns nil for non-nil values. +func TestNotNil_Pass(t *testing.T) { + t.Parallel() + + asserter := newTestAsserter(nil) + require.NoError(t, asserter.NotNil(context.Background(), "hello", "string should not be nil")) + require.NoError(t, asserter.NotNil(context.Background(), 42, "int should not be nil")) + + x := new(int) + require.NoError(t, asserter.NotNil(context.Background(), x, "pointer should not be nil")) + + s := []int{1, 2, 3} + require.NoError(t, asserter.NotNil(context.Background(), s, "slice should not be nil")) + + m := map[string]int{"a": 1} + require.NoError(t, asserter.NotNil(context.Background(), m, "map should not be nil")) +} + +// TestNotNil_Fail verifies NotNil returns an error for nil values. +func TestNotNil_Fail(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.NotNil(context.Background(), nil, "should fail for nil") + require.Error(t, err) +} + +// TestNotNil_TypedNil verifies NotNil correctly handles typed nil. +func TestNotNil_TypedNil(t *testing.T) { + t.Parallel() + + asserter, _ := newTestAsserterWithLogger() + + var ptr *int + + var iface any = ptr + + err := asserter.NotNil(context.Background(), iface, "should fail for typed nil") + require.Error(t, err) +} + +// TestNotNil_TypedNilSlice verifies NotNil handles typed nil slices. +func TestNotNil_TypedNilSlice(t *testing.T) { + t.Parallel() + + asserter, _ := newTestAsserterWithLogger() + + var s []int + + var iface any = s + + err := asserter.NotNil(context.Background(), iface, "should fail for typed nil slice") + require.Error(t, err) +} + +// TestNotNil_TypedNilMap verifies NotNil handles typed nil maps. +func TestNotNil_TypedNilMap(t *testing.T) { + t.Parallel() + + asserter, _ := newTestAsserterWithLogger() + + var m map[string]int + + var iface any = m + + err := asserter.NotNil(context.Background(), iface, "should fail for typed nil map") + require.Error(t, err) +} + +// TestNotNil_TypedNilChan verifies NotNil handles typed nil channels. +func TestNotNil_TypedNilChan(t *testing.T) { + t.Parallel() + + asserter, _ := newTestAsserterWithLogger() + + var ch chan int + + var iface any = ch + + err := asserter.NotNil(context.Background(), iface, "should fail for typed nil channel") + require.Error(t, err) +} + +// TestNotNil_TypedNilFunc verifies NotNil handles typed nil functions. +func TestNotNil_TypedNilFunc(t *testing.T) { + t.Parallel() + + asserter, _ := newTestAsserterWithLogger() + + var fn func() + + var iface any = fn + + err := asserter.NotNil(context.Background(), iface, "should fail for typed nil function") + require.Error(t, err) +} + +// TestNotEmpty_Pass verifies NotEmpty returns nil for non-empty strings. +func TestNotEmpty_Pass(t *testing.T) { + t.Parallel() + + a := newTestAsserter(nil) + require.NoError(t, a.NotEmpty(context.Background(), "hello", "should not fail")) + require.NoError(t, a.NotEmpty(context.Background(), " ", "whitespace is not empty")) +} + +// TestNotEmpty_Fail verifies NotEmpty returns an error for empty strings. +func TestNotEmpty_Fail(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.NotEmpty(context.Background(), "", "should fail for empty string") + require.Error(t, err) +} + +// TestNoError_Pass verifies NoError returns nil when error is nil. +func TestNoError_Pass(t *testing.T) { + t.Parallel() + + a := newTestAsserter(nil) + require.NoError(t, a.NoError(context.Background(), nil, "should not fail")) +} + +// TestNoError_Fail verifies NoError returns an error when error is not nil. +func TestNoError_Fail(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.NoError(context.Background(), errTest, "should fail") + require.Error(t, err) +} + +// TestNoError_MessageContainsError verifies the error message and type are included. +func TestNoError_MessageContainsError(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.NoError( + context.Background(), + errSpecificTest, + "operation failed", + "context_key", + "context_value", + ) + require.Error(t, err) + msg := err.Error() + require.Contains(t, msg, "assertion failed:") + require.Contains(t, msg, "operation failed") + require.Contains(t, msg, "error=specific test error") + require.Contains(t, msg, "error_type=*errors.errorString") + require.Contains(t, msg, "context_key=context_value") +} + +// TestNever_AlwaysFails verifies Never always returns an error. +func TestNever_AlwaysFails(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.Never(context.Background(), "unreachable code reached") + require.Error(t, err) +} + +// TestNever_ErrorMessage verifies Never includes message and context. +func TestNever_ErrorMessage(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.Never(context.Background(), "unreachable", "state", "invalid") + require.Error(t, err) + msg := err.Error() + require.Contains(t, msg, "assertion failed:") + require.Contains(t, msg, "unreachable") + require.Contains(t, msg, "state=invalid") +} + +// TestOddKeyValuePairs verifies handling of odd number of key-value pairs. +func TestOddKeyValuePairs(t *testing.T) { + t.Parallel() + + a, _ := newTestAsserterWithLogger() + err := a.That(context.Background(), false, "test", "key1", "value1", "key2") + require.Error(t, err) + msg := err.Error() + require.Contains(t, msg, "key1=value1") + require.Contains(t, msg, "key2=MISSING_VALUE") +} + +// TestPositive tests the Positive predicate. +func TestPositive(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int64 + expected bool + }{ + {"positive", 1, true}, + {"large positive", 1000000, true}, + {"max int64", math.MaxInt64, true}, + {"zero", 0, false}, + {"negative", -1, false}, + {"large negative", -1000000, false}, + {"min int64", math.MinInt64, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, Positive(tt.n)) + }) + } +} + +// TestNonNegative tests the NonNegative predicate. +func TestNonNegative(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int64 + expected bool + }{ + {"positive", 1, true}, + {"max int64", math.MaxInt64, true}, + {"zero", 0, true}, + {"negative", -1, false}, + {"large negative", -1000000, false}, + {"min int64", math.MinInt64, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, NonNegative(tt.n)) + }) + } +} + +// TestNotZero tests the NotZero predicate. +func TestNotZero(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int64 + expected bool + }{ + {"positive", 1, true}, + {"negative", -1, true}, + {"zero", 0, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, NotZero(tt.n)) + }) + } +} + +// TestInRange tests the InRange predicate. +func TestInRange(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int64 + min int64 + max int64 + expected bool + }{ + {"in range", 5, 1, 10, true}, + {"at min", 1, 1, 10, true}, + {"at max", 10, 1, 10, true}, + {"below range", 0, 1, 10, false}, + {"above range", 11, 1, 10, false}, + {"inverted range", 5, 10, 1, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, InRange(tt.n, tt.min, tt.max)) + }) + } +} + +// TestValidUUID tests ValidUUID predicate. +func TestValidUUID(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + uuid string + expected bool + }{ + {"valid UUID", "123e4567-e89b-12d3-a456-426614174000", true}, + {"valid UUID without hyphens", "123e4567e89b12d3a456426614174000", true}, + {"empty string", "", false}, + {"invalid format", "not-a-uuid", false}, + {"too short", "123e4567-e89b-12d3-a456-42661417400", false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidUUID(tt.uuid)) + }) + } +} + +// TestValidAmount tests ValidAmount predicate. +func TestValidAmount(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + amount decimal.Decimal + expected bool + }{ + {"zero", decimal.Zero, true}, + {"max positive exponent", decimal.New(1, 18), true}, + {"min negative exponent", decimal.New(1, -18), true}, + {"too large exponent", decimal.New(1, 19), false}, + {"too small exponent", decimal.New(1, -19), false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidAmount(tt.amount)) + }) + } +} + +// TestValidScale tests ValidScale predicate. +func TestValidScale(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + scale int + expected bool + }{ + {"min scale", 0, true}, + {"max scale", 18, true}, + {"negative scale", -1, false}, + {"too large scale", 19, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidScale(tt.scale)) + }) + } +} + +// TestPositiveDecimal tests PositiveDecimal predicate. +func TestPositiveDecimal(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + amount decimal.Decimal + expected bool + }{ + {"positive", decimal.NewFromFloat(1.23), true}, + {"zero", decimal.Zero, false}, + {"negative", decimal.NewFromFloat(-1.23), false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, PositiveDecimal(tt.amount)) + }) + } +} + +// TestNonNegativeDecimal tests NonNegativeDecimal predicate. +func TestNonNegativeDecimal(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + amount decimal.Decimal + expected bool + }{ + {"positive", decimal.NewFromFloat(1.23), true}, + {"zero", decimal.Zero, true}, + {"negative", decimal.NewFromFloat(-1.23), false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, NonNegativeDecimal(tt.amount)) + }) + } +} + +// TestValidPort tests ValidPort predicate. +func TestValidPort(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + port string + expected bool + }{ + {"valid port", "5432", true}, + {"min port", "1", true}, + {"max port", "65535", true}, + {"zero port", "0", false}, + {"negative", "-1", false}, + {"too large", "65536", false}, + {"non-numeric", "abc", false}, + {"empty", "", false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidPort(tt.port)) + }) + } +} + +// TestValidSSLMode tests ValidSSLMode predicate. +func TestValidSSLMode(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + mode string + expected bool + }{ + {"empty", "", true}, + {"disable", "disable", true}, + {"allow", "allow", true}, + {"prefer", "prefer", true}, + {"require", "require", true}, + {"verify-ca", "verify-ca", true}, + {"verify-full", "verify-full", true}, + {"invalid", "invalid", false}, + {"uppercase", "DISABLE", false}, + {"with spaces", " disable ", false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidSSLMode(tt.mode)) + }) + } +} + +// TestPositiveInt tests PositiveInt predicate. +func TestPositiveInt(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int + expected bool + }{ + {"positive", 1, true}, + {"zero", 0, false}, + {"negative", -1, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, PositiveInt(tt.n)) + }) + } +} + +// TestInRangeInt tests InRangeInt predicate. +func TestInRangeInt(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + n int + min int + max int + expected bool + }{ + {"in range", 5, 1, 10, true}, + {"at min", 1, 1, 10, true}, + {"at max", 10, 1, 10, true}, + {"below range", 0, 1, 10, false}, + {"above range", 11, 1, 10, false}, + {"inverted range", 5, 10, 1, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, InRangeInt(tt.n, tt.min, tt.max)) + }) + } +} diff --git a/assert/predicates_test.go b/assert/predicates_test.go new file mode 100644 index 0000000..7ae5219 --- /dev/null +++ b/assert/predicates_test.go @@ -0,0 +1,334 @@ +//go:build unit + +package assert + +import ( + "testing" + "time" + + "github.com/shopspring/decimal" + "github.com/stretchr/testify/require" +) + +// TestDebitsEqualCredits tests the DebitsEqualCredits predicate for double-entry accounting. +func TestDebitsEqualCredits(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + debits decimal.Decimal + credits decimal.Decimal + expected bool + }{ + {"equal positive amounts", decimal.NewFromInt(100), decimal.NewFromInt(100), true}, + {"equal with decimals", decimal.NewFromFloat(123.45), decimal.NewFromFloat(123.45), true}, + {"equal zero", decimal.Zero, decimal.Zero, true}, + {"debits greater", decimal.NewFromInt(100), decimal.NewFromInt(99), false}, + {"credits greater", decimal.NewFromInt(99), decimal.NewFromInt(100), false}, + {"tiny difference", decimal.NewFromFloat(100.001), decimal.NewFromFloat(100.002), false}, + {"large equal", decimal.NewFromInt(1000000000), decimal.NewFromInt(1000000000), true}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, DebitsEqualCredits(tt.debits, tt.credits)) + }) + } +} + +// TestNonZeroTotals tests the NonZeroTotals predicate for transaction validation. +func TestNonZeroTotals(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + debits decimal.Decimal + credits decimal.Decimal + expected bool + }{ + {"both positive", decimal.NewFromInt(100), decimal.NewFromInt(100), true}, + {"both zero", decimal.Zero, decimal.Zero, false}, + {"debits zero", decimal.Zero, decimal.NewFromInt(100), false}, + {"credits zero", decimal.NewFromInt(100), decimal.Zero, false}, + {"small positive", decimal.NewFromFloat(0.01), decimal.NewFromFloat(0.01), true}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, NonZeroTotals(tt.debits, tt.credits)) + }) + } +} + +// TestValidTransactionStatus tests the ValidTransactionStatus predicate. +func TestValidTransactionStatus(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + status string + expected bool + }{ + {"CREATED valid", "CREATED", true}, + {"APPROVED valid", "APPROVED", true}, + {"PENDING valid", "PENDING", true}, + {"CANCELED valid", "CANCELED", true}, + {"NOTED valid", "NOTED", true}, + {"empty invalid", "", false}, + {"lowercase invalid", "pending", false}, + {"unknown invalid", "UNKNOWN", false}, + {"partial invalid", "APPROV", false}, + {"with spaces invalid", " PENDING ", false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, ValidTransactionStatus(tt.status)) + }) + } +} + +// TestTransactionCanTransitionTo tests the TransactionCanTransitionTo predicate. +func TestTransactionCanTransitionTo(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + current string + target string + expected bool + }{ + {"PENDING to APPROVED", "PENDING", "APPROVED", true}, + {"PENDING to CANCELED", "PENDING", "CANCELED", true}, + {"PENDING to CREATED", "PENDING", "CREATED", false}, + {"PENDING to PENDING", "PENDING", "PENDING", false}, + {"APPROVED to CANCELED", "APPROVED", "CANCELED", false}, + {"APPROVED to PENDING", "APPROVED", "PENDING", false}, + {"APPROVED to CREATED", "APPROVED", "CREATED", false}, + {"CANCELED to APPROVED", "CANCELED", "APPROVED", false}, + {"CANCELED to PENDING", "CANCELED", "PENDING", false}, + {"CREATED to APPROVED", "CREATED", "APPROVED", false}, + {"CREATED to CANCELED", "CREATED", "CANCELED", false}, + {"invalid current", "INVALID", "APPROVED", false}, + {"invalid target", "PENDING", "INVALID", false}, + {"both invalid", "INVALID", "UNKNOWN", false}, + {"empty current", "", "APPROVED", false}, + {"empty target", "PENDING", "", false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, TransactionCanTransitionTo(tt.current, tt.target)) + }) + } +} + +// TestTransactionCanBeReverted tests the TransactionCanBeReverted predicate. +func TestTransactionCanBeReverted(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + status string + hasParent bool + expected bool + }{ + {"APPROVED without parent can revert", "APPROVED", false, true}, + {"APPROVED with parent cannot revert", "APPROVED", true, false}, + {"PENDING cannot revert", "PENDING", false, false}, + {"CANCELED cannot revert", "CANCELED", false, false}, + {"CREATED cannot revert", "CREATED", false, false}, + {"NOTED cannot revert", "NOTED", false, false}, + {"invalid status cannot revert", "INVALID", false, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, TransactionCanBeReverted(tt.status, tt.hasParent)) + }) + } +} + +// TestBalanceSufficientForRelease tests the BalanceSufficientForRelease predicate. +func TestBalanceSufficientForRelease(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + onHold decimal.Decimal + releaseAmount decimal.Decimal + expected bool + }{ + {"sufficient onHold", decimal.NewFromInt(100), decimal.NewFromInt(50), true}, + {"exactly sufficient", decimal.NewFromInt(100), decimal.NewFromInt(100), true}, + {"insufficient onHold", decimal.NewFromInt(50), decimal.NewFromInt(100), false}, + {"zero onHold zero release", decimal.Zero, decimal.Zero, true}, + {"zero onHold positive release", decimal.Zero, decimal.NewFromInt(1), false}, + { + "decimal precision sufficient", + decimal.NewFromFloat(100.50), + decimal.NewFromFloat(100.49), + true, + }, + { + "decimal precision insufficient", + decimal.NewFromFloat(100.49), + decimal.NewFromFloat(100.50), + false, + }, + {"negative onHold always fails", decimal.NewFromInt(-10), decimal.NewFromInt(5), false}, + {"negative releaseAmount always fails", decimal.NewFromInt(100), decimal.NewFromInt(-5), false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, BalanceSufficientForRelease(tt.onHold, tt.releaseAmount)) + }) + } +} + +// TestDateNotInFuture tests the DateNotInFuture predicate. +func TestDateNotInFuture(t *testing.T) { + t.Parallel() + + now := time.Now() + + tests := []struct { + name string + date time.Time + expected bool + }{ + {"past date valid", now.Add(-24 * time.Hour), true}, + {"recent past valid", now.Add(-time.Second), true}, + {"one second ago valid", now.Add(-time.Second), true}, + {"one second future invalid", now.Add(time.Second), false}, + {"one hour future invalid", now.Add(time.Hour), false}, + {"far future invalid", now.Add(365 * 24 * time.Hour), false}, + {"zero time valid", time.Time{}, true}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + result := DateNotInFuture(tt.date) + require.Equal(t, tt.expected, result) + }) + } +} + +// TestDateAfter tests the DateAfter predicate. +func TestDateAfter(t *testing.T) { + t.Parallel() + + base := time.Date(2024, 1, 15, 12, 0, 0, 0, time.UTC) + + tests := []struct { + name string + date time.Time + reference time.Time + expected bool + }{ + {"date after reference", base.Add(24 * time.Hour), base, true}, + {"date equal to reference", base, base, false}, + {"date before reference", base.Add(-24 * time.Hour), base, false}, + {"date one second after", base.Add(time.Second), base, true}, + {"date one second before", base.Add(-time.Second), base, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, DateAfter(tt.date, tt.reference)) + }) + } +} + +// TestBalanceIsZero tests the BalanceIsZero predicate. +func TestBalanceIsZero(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + available decimal.Decimal + onHold decimal.Decimal + expected bool + }{ + {"both zero", decimal.Zero, decimal.Zero, true}, + {"available non-zero", decimal.NewFromInt(1), decimal.Zero, false}, + {"onHold non-zero", decimal.Zero, decimal.NewFromInt(1), false}, + {"both non-zero", decimal.NewFromInt(1), decimal.NewFromInt(1), false}, + {"tiny available", decimal.NewFromFloat(0.001), decimal.Zero, false}, + {"negative available still not zero", decimal.NewFromInt(-1), decimal.Zero, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, BalanceIsZero(tt.available, tt.onHold)) + }) + } +} + +// TestTransactionHasOperations tests the TransactionHasOperations predicate. +func TestTransactionHasOperations(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + ops []string + expectedOK bool + }{ + {"has operations", []string{"CREDIT"}, true}, + {"empty operations", nil, false}, + {"empty slice", []string{}, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expectedOK, TransactionHasOperations(tt.ops)) + }) + } +} + +// TestTransactionOperationsContain tests the TransactionOperationsContain predicate. +func TestTransactionOperationsContain(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + ops []string + allowed []string + expected bool + }{ + {"match single", []string{"CREDIT"}, []string{"CREDIT", "DEBIT"}, true}, + {"match multiple", []string{"CREDIT", "DEBIT"}, []string{"CREDIT", "DEBIT"}, true}, + {"mismatch", []string{"TRANSFER"}, []string{"CREDIT", "DEBIT"}, false}, + {"empty operations", []string{}, []string{"CREDIT"}, false}, + {"empty allowed", []string{"CREDIT"}, []string{}, false}, + {"whitespace tolerant", []string{" CREDIT "}, []string{"CREDIT"}, true}, + {"whitespace mismatch", []string{" CREDIT "}, []string{"DEBIT"}, false}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + require.Equal(t, tt.expected, TransactionOperationsContain(tt.ops, tt.allowed)) + }) + } +} + +// TestTransactionOperationsMatch_DeprecatedAlias verifies the deprecated alias delegates correctly. +func TestTransactionOperationsMatch_DeprecatedAlias(t *testing.T) { + t.Parallel() + + require.True(t, TransactionOperationsMatch([]string{"CREDIT"}, []string{"CREDIT", "DEBIT"})) + require.False(t, TransactionOperationsMatch([]string{"TRANSFER"}, []string{"CREDIT", "DEBIT"})) +} diff --git a/log/log_test.go b/log/log_test.go new file mode 100644 index 0000000..498661b --- /dev/null +++ b/log/log_test.go @@ -0,0 +1,680 @@ +//go:build unit + +package log + +import ( + "bytes" + "context" + "errors" + stdlog "log" + "strings" + "sync" + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.uber.org/mock/gomock" +) + +var stdLoggerOutputMu sync.Mutex + +func withTestLoggerOutput(t *testing.T, output *bytes.Buffer) { + t.Helper() + + stdLoggerOutputMu.Lock() + defer t.Cleanup(func() { + stdLoggerOutputMu.Unlock() + }) + + originalOutput := stdlog.Writer() + stdlog.SetOutput(output) + t.Cleanup(func() { stdlog.SetOutput(originalOutput) }) +} + +func TestParseLevel(t *testing.T) { + tests := []struct { + in string + expected Level + err bool + }{ + {in: "error", expected: LevelError}, + {in: "warn", expected: LevelWarn}, + {in: "warning", expected: LevelWarn}, + {in: "info", expected: LevelInfo}, + {in: "debug", expected: LevelDebug}, + {in: "panic", err: true}, + {in: "fatal", err: true}, + {in: "INVALID", err: true}, + } + + for _, tt := range tests { + level, err := ParseLevel(tt.in) + if tt.err { + assert.Error(t, err) + continue + } + + assert.NoError(t, err) + assert.Equal(t, tt.expected, level) + } +} + +func TestGoLogger_Enabled(t *testing.T) { + logger := &GoLogger{Level: LevelInfo} + assert.True(t, logger.Enabled(LevelError)) + assert.True(t, logger.Enabled(LevelInfo)) + assert.False(t, logger.Enabled(LevelDebug)) +} + +func TestGoLogger_LogWithFieldsAndGroup(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := (&GoLogger{Level: LevelDebug}). + WithGroup("http"). + With(String("request_id", "r-1")) + + logger.Log(context.Background(), LevelInfo, "request finished", Int("status", 200)) + + out := buf.String() + assert.Contains(t, out, "[info]") + assert.Contains(t, out, "group=http") + assert.Contains(t, out, "request_id=r-1") + assert.Contains(t, out, "status=200") + assert.Contains(t, out, "request finished") +} + +func TestGoLogger_WithIsImmutable(t *testing.T) { + base := &GoLogger{Level: LevelDebug} + withField := base.With(String("k", "v")) + + assert.NotEqual(t, base, withField) + assert.Empty(t, base.fields) + + goLogger, ok := withField.(*GoLogger) + require.True(t, ok, "expected *GoLogger from With()") + assert.Len(t, goLogger.fields, 1) +} + +func TestNopLogger(t *testing.T) { + nop := NewNop() + assert.NotPanics(t, func() { + nop.Log(context.Background(), LevelInfo, "hello") + _ = nop.With(String("k", "v")) + _ = nop.WithGroup("x") + _ = nop.Sync(context.Background()) + }) + assert.False(t, nop.Enabled(LevelError)) +} + +func TestLevelLegacyNamesRejected(t *testing.T) { + _, panicErr := ParseLevel("panic") + _, fatalErr := ParseLevel("fatal") + assert.Error(t, panicErr) + assert.Error(t, fatalErr) +} + +// TestNoLegacyLevelSymbolsInAPI verifies that ParseLevel rejects legacy level +// names ("panic", "fatal") that were removed in the v2 API migration. +func TestNoLegacyLevelSymbolsInAPI(t *testing.T) { + legacyNames := []string{"panic", "fatal", "PANIC", "FATAL", "Panic", "Fatal"} + for _, name := range legacyNames { + level, err := ParseLevel(name) + assert.Error(t, err, "ParseLevel(%q) should reject legacy level name", name) + assert.Equal(t, LevelUnknown, level, + "ParseLevel(%q) should return LevelUnknown for rejected names", name) + } + + // Confirm no level constant stringifies to legacy names + for _, lvl := range []Level{LevelError, LevelWarn, LevelInfo, LevelDebug} { + s := lvl.String() + assert.NotEqual(t, "panic", s, "no Level constant should stringify to 'panic'") + assert.NotEqual(t, "fatal", s, "no Level constant should stringify to 'fatal'") + } +} + +// =========================================================================== +// CWE-117: Log Injection Prevention Tests +// =========================================================================== + +func TestCWE117_MessageNewlineInjection(t *testing.T) { + tests := []struct { + name string + input string + }{ + { + name: "LF newline injection", + input: "legitimate message\n[info] forged log entry", + }, + { + name: "CR injection", + input: "legitimate message\r[info] forged log entry", + }, + { + name: "CRLF injection", + input: "legitimate message\r\n[info] forged log entry", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, tt.input) + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: log output must be a single line, got %d newlines in: %q", newlineCount, out) + + assert.NotContains(t, out, "\n[info] forged") + }) + } +} + +func TestCWE117_FieldValueInjection(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + maliciousValue := "normal_user\n[error] ADMIN ACCESS GRANTED user=admin action=delete_all" + logger.Log(context.Background(), LevelInfo, "user login", String("user_id", maliciousValue)) + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: field injection must not create extra log lines, got: %q", out) +} + +func TestCWE117_FieldKeyInjection(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "event", + String("key\ninjected_key", "value")) + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: field key injection must not create extra log lines") +} + +func TestCWE117_GroupNameInjection(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := (&GoLogger{Level: LevelDebug}). + WithGroup("safe\n[error] forged entry") + + logger.Log(context.Background(), LevelInfo, "test message") + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: group name injection must not create extra log lines") +} + +func TestCWE117_NullByteInjection(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "before\x00after") + + out := buf.String() + assert.NotContains(t, out, "\x00", + "CWE-117: null bytes must not appear in log output") +} + +func TestCWE117_ANSIEscapeSequences(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "normal \x1b[31mRED ALERT\x1b[0m normal") + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "ANSI escapes must not break single-line log output") + assert.Contains(t, out, "normal") +} + +func TestCWE117_TabInjection(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "field1\tfield2\tfield3") + + out := buf.String() + assert.NotContains(t, out, "\t", + "tab characters should be escaped in log output") + assert.Contains(t, out, `\t`) +} + +func TestCWE117_MultipleVectorsSimultaneously(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + attack := "msg\n[error] fake\r[warn] also fake\ttab\x00null" + logger.Log(context.Background(), LevelInfo, attack, + String("user\nfake_key", "val\nfake_val")) + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: combined attack must not create multiple log lines") +} + +func TestCWE117_VeryLongMessageDoesNotCrash(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + + var sb strings.Builder + for i := 0; i < 100; i++ { + sb.WriteString(strings.Repeat("A", 1000)) + sb.WriteString("\n[error] forged entry ") + } + + longMsg := sb.String() + + assert.NotPanics(t, func() { + logger.Log(context.Background(), LevelInfo, longMsg) + }) + + out := buf.String() + newlineCount := strings.Count(out, "\n") + assert.Equal(t, 1, newlineCount, + "CWE-117: very long message with injections must remain single-line") +} + +// =========================================================================== +// GoLogger Behavioral Tests +// =========================================================================== + +func TestGoLogger_OutputFormat(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelError, "something broke", String("code", "500")) + + out := buf.String() + assert.Contains(t, out, "[error]") + assert.Contains(t, out, "code=500") + assert.Contains(t, out, "something broke") +} + +func TestGoLogger_LevelFiltering(t *testing.T) { + tests := []struct { + name string + loggerLvl Level + msgLvl Level + shouldEmit bool + }{ + {"error logger emits error", LevelError, LevelError, true}, + {"error logger suppresses warn", LevelError, LevelWarn, false}, + {"error logger suppresses info", LevelError, LevelInfo, false}, + {"error logger suppresses debug", LevelError, LevelDebug, false}, + {"warn logger emits error", LevelWarn, LevelError, true}, + {"warn logger emits warn", LevelWarn, LevelWarn, true}, + {"warn logger suppresses info", LevelWarn, LevelInfo, false}, + {"info logger emits info", LevelInfo, LevelInfo, true}, + {"info logger emits error", LevelInfo, LevelError, true}, + {"debug logger emits everything", LevelDebug, LevelDebug, true}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: tt.loggerLvl} + logger.Log(context.Background(), tt.msgLvl, "test message") + + if tt.shouldEmit { + assert.NotEmpty(t, buf.String(), "expected message to be emitted") + } else { + assert.Empty(t, buf.String(), "expected message to be suppressed") + } + }) + } +} + +func TestGoLogger_WithPreservesFields(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := (&GoLogger{Level: LevelDebug}). + With(String("service", "payments"), Int("version", 2)) + + logger.Log(context.Background(), LevelInfo, "started") + + out := buf.String() + assert.Contains(t, out, "service=payments") + assert.Contains(t, out, "version=2") +} + +func TestGoLogger_WithGroupNesting(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := (&GoLogger{Level: LevelDebug}). + WithGroup("http"). + WithGroup("middleware") + + logger.Log(context.Background(), LevelInfo, "applied") + + out := buf.String() + assert.Contains(t, out, "group=http.middleware") +} + +func TestGoLogger_WithGroupEmptyNameIgnored(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := (&GoLogger{Level: LevelDebug}). + WithGroup(""). + WithGroup(" ") + + logger.Log(context.Background(), LevelInfo, "test") + + out := buf.String() + assert.NotContains(t, out, "group=") +} + +func TestGoLogger_SyncReturnsNil(t *testing.T) { + logger := &GoLogger{Level: LevelInfo} + assert.NoError(t, logger.Sync(context.Background())) +} + +func TestGoLogger_NilReceiverSafety(t *testing.T) { + var logger *GoLogger + + assert.False(t, logger.Enabled(LevelError)) + + assert.NotPanics(t, func() { + child := logger.With(String("k", "v")) + require.NotNil(t, child) + }) + + assert.NotPanics(t, func() { + child := logger.WithGroup("grp") + require.NotNil(t, child) + }) +} + +func TestGoLogger_EmptyFieldKeySkipped(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "msg", String("", "should_be_dropped")) + + out := buf.String() + assert.NotContains(t, out, "should_be_dropped") +} + +func TestGoLogger_BoolAndErrFields(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "event", + Bool("active", true), + Err(assert.AnError)) + + out := buf.String() + assert.Contains(t, out, "active=true") + assert.Contains(t, out, "error=") +} + +func TestGoLogger_AnyFieldConstructor(t *testing.T) { + f := Any("data", map[string]int{"count": 42}) + assert.Equal(t, "data", f.Key) + assert.NotNil(t, f.Value) +} + +func TestGoLogger_SensitiveFieldRedaction(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + logger.Log(context.Background(), LevelInfo, "login attempt", + String("password", "super_secret"), + String("api_key", "key-12345"), + String("user_id", "u-42"), + ) + + out := buf.String() + assert.NotContains(t, out, "super_secret", "password value must be redacted") + assert.NotContains(t, out, "key-12345", "api_key value must be redacted") + assert.Contains(t, out, "[REDACTED]", "redacted fields must show [REDACTED]") + assert.Contains(t, out, "user_id=u-42", "non-sensitive fields must pass through") +} + +func TestGoLogger_WithGroupEmptyReturnsReceiver(t *testing.T) { + logger := &GoLogger{Level: LevelDebug} + same := logger.WithGroup("") + assert.Same(t, logger, same, "WithGroup(\"\") should return the same logger") +} + +func TestParseLevel_WhitespaceTrimming(t *testing.T) { + tests := []struct { + input string + expected Level + }{ + {" debug ", LevelDebug}, + {"\tinfo\n", LevelInfo}, + {" warn ", LevelWarn}, + {"\nerror\t", LevelError}, + } + + for _, tt := range tests { + level, err := ParseLevel(tt.input) + require.NoError(t, err, "ParseLevel(%q) should not error", tt.input) + assert.Equal(t, tt.expected, level) + } +} + +// =========================================================================== +// NopLogger Comprehensive Tests +// =========================================================================== + +func TestNopLogger_AllMethodsAreNoOps(t *testing.T) { + nop := NewNop() + + t.Run("Log does not panic at any level", func(t *testing.T) { + assert.NotPanics(t, func() { + for _, level := range []Level{LevelError, LevelWarn, LevelInfo, LevelDebug} { + nop.Log(context.Background(), level, "message", + String("k", "v"), Int("n", 1), Bool("b", true)) + } + }) + }) + + t.Run("With returns self", func(t *testing.T) { + child := nop.With(String("a", "b"), String("c", "d")) + assert.Equal(t, nop, child) + }) + + t.Run("WithGroup returns self", func(t *testing.T) { + child := nop.WithGroup("any_group") + assert.Equal(t, nop, child) + }) + + t.Run("Enabled always false", func(t *testing.T) { + for _, level := range []Level{LevelError, LevelWarn, LevelInfo, LevelDebug} { + assert.False(t, nop.Enabled(level)) + } + }) + + t.Run("Sync returns nil", func(t *testing.T) { + assert.NoError(t, nop.Sync(context.Background())) + }) +} + +func TestNopLogger_InterfaceCompliance(t *testing.T) { + var _ Logger = NewNop() + var _ Logger = &NopLogger{} +} + +// =========================================================================== +// MockLogger Verification Tests +// =========================================================================== + +func TestMockLogger_RecordsCalls(t *testing.T) { + ctrl := gomock.NewController(t) + mock := NewMockLogger(ctrl) + + ctx := context.Background() + + mock.EXPECT().Enabled(LevelInfo).Return(true) + mock.EXPECT().Log(ctx, LevelInfo, "hello", String("k", "v")) + mock.EXPECT().Sync(ctx).Return(nil) + + assert.True(t, mock.Enabled(LevelInfo)) + mock.Log(ctx, LevelInfo, "hello", String("k", "v")) + assert.NoError(t, mock.Sync(ctx)) +} + +func TestMockLogger_WithAndWithGroup(t *testing.T) { + ctrl := gomock.NewController(t) + mock := NewMockLogger(ctrl) + + childMock := NewMockLogger(ctrl) + + mock.EXPECT().With(String("tenant", "t1")).Return(childMock) + mock.EXPECT().WithGroup("audit").Return(childMock) + + child1 := mock.With(String("tenant", "t1")) + assert.Equal(t, childMock, child1) + + child2 := mock.WithGroup("audit") + assert.Equal(t, childMock, child2) +} + +func TestMockLogger_InterfaceCompliance(t *testing.T) { + ctrl := gomock.NewController(t) + var _ Logger = NewMockLogger(ctrl) +} + +// =========================================================================== +// Level String Tests +// =========================================================================== + +func TestLevel_String(t *testing.T) { + tests := []struct { + level Level + expected string + }{ + {LevelError, "error"}, + {LevelWarn, "warn"}, + {LevelInfo, "info"}, + {LevelDebug, "debug"}, + {Level(255), "unknown"}, + } + + for _, tt := range tests { + assert.Equal(t, tt.expected, tt.level.String()) + } +} + +// =========================================================================== +// renderFields Tests +// =========================================================================== + +func TestRenderFields_EmptyReturnsEmpty(t *testing.T) { + assert.Equal(t, "", renderFields(nil)) + assert.Equal(t, "", renderFields([]Field{})) +} + +func TestRenderFields_SingleField(t *testing.T) { + result := renderFields([]Field{String("status", "ok")}) + assert.Equal(t, "[status=ok]", result) +} + +func TestRenderFields_MultipleFields(t *testing.T) { + result := renderFields([]Field{ + String("a", "1"), + Int("b", 2), + Bool("c", true), + }) + assert.Contains(t, result, "a=1") + assert.Contains(t, result, "b=2") + assert.Contains(t, result, "c=true") +} + +func TestRenderFields_EmptyKeyFieldSkipped(t *testing.T) { + result := renderFields([]Field{String("", "val")}) + assert.Equal(t, "", result) +} + +func TestRenderFields_SanitizesKeysAndValues(t *testing.T) { + result := renderFields([]Field{ + String("status\ninjection", "value\ninjection"), + }) + assert.NotContains(t, result, "\n") + assert.Contains(t, result, `\n`) +} + +// =========================================================================== +// sanitizeFieldValue Tests +// =========================================================================== + +type testStringer struct{ s string } + +func (ts testStringer) String() string { return ts.s } + +func TestSanitizeFieldValue(t *testing.T) { + tests := []struct { + name string + input any + expected any + }{ + { + name: "plain string passthrough", + input: "hello", + expected: "hello", + }, + { + name: "string with newline is sanitized", + input: "line1\nline2", + expected: `line1\nline2`, + }, + { + name: "error with newline is sanitized", + input: errors.New("bad\ninput"), + expected: `bad\ninput`, + }, + { + name: "fmt.Stringer with newline is sanitized", + input: testStringer{s: "hello\nworld"}, + expected: `hello\nworld`, + }, + { + name: "integer passes through unchanged", + input: 42, + expected: 42, + }, + { + name: "nil passes through unchanged", + input: nil, + expected: nil, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + result := sanitizeFieldValue(tt.input) + assert.Equal(t, tt.expected, result) + }) + } +} diff --git a/log/sanitizer_test.go b/log/sanitizer_test.go new file mode 100644 index 0000000..3cce4c5 --- /dev/null +++ b/log/sanitizer_test.go @@ -0,0 +1,287 @@ +//go:build unit + +package log + +import ( + "bytes" + "context" + "errors" + "strings" + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestSafeError_ProductionAndNonProduction(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelDebug} + err := errors.New("credential_id=abc123") + + SafeError(logger, context.Background(), "request failed", err, false) + assert.Contains(t, buf.String(), "request failed") + assert.Contains(t, buf.String(), "credential_id=abc123") + + buf.Reset() + SafeError(logger, context.Background(), "request failed", err, true) + out := buf.String() + assert.Contains(t, out, "request failed") + assert.Contains(t, out, "error_type=*errors.errorString") + assert.NotContains(t, out, "credential_id=abc123") +} + +func TestSafeError_NilGuards(t *testing.T) { + t.Run("nil logger produces no output", func(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + assert.NotPanics(t, func() { + SafeError(nil, context.Background(), "msg", assert.AnError, true) + }) + assert.Empty(t, buf.String(), "nil logger must produce no output") + }) + + t.Run("nil error produces no output", func(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + assert.NotPanics(t, func() { + SafeError(&GoLogger{Level: LevelInfo}, context.Background(), "msg", nil, true) + }) + assert.Empty(t, buf.String(), "nil error must produce no output") + }) +} + +func TestSanitizeExternalResponse(t *testing.T) { + assert.Equal(t, "external system returned status 400", SanitizeExternalResponse(400)) +} + +// --------------------------------------------------------------------------- +// CWE-117: Comprehensive sanitizeLogString test matrix +// --------------------------------------------------------------------------- + +func TestSanitizeLogString_ControlCharacterMatrix(t *testing.T) { + tests := []struct { + name string + input string + assertFn func(t *testing.T, result string) + }{ + { + name: "LF newline is escaped", + input: "line1\nline2", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\n") + assert.Contains(t, result, `\n`) + }, + }, + { + name: "CR carriage return is escaped", + input: "line1\rline2", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\r") + assert.Contains(t, result, `\r`) + }, + }, + { + name: "CRLF is escaped", + input: "line1\r\nline2", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\r") + assert.NotContains(t, result, "\n") + assert.Contains(t, result, `\r`) + assert.Contains(t, result, `\n`) + }, + }, + { + name: "tab character is escaped", + input: "field1\tfield2", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\t") + assert.Contains(t, result, `\t`) + }, + }, + { + name: "null byte is removed or escaped", + input: "before\x00after", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\x00") + }, + }, + { + name: "normal ASCII passes through unchanged", + input: "hello world 123 !@#$%", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.Equal(t, "hello world 123 !@#$%", result) + }, + }, + { + name: "empty string passes through", + input: "", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.Equal(t, "", result) + }, + }, + { + name: "legitimate Unicode text passes through", + input: "Hello, \u4e16\u754c! Ol\u00e1! \u00dcber!", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.Contains(t, result, "\u4e16\u754c") + assert.Contains(t, result, "Ol\u00e1") + }, + }, + { + name: "multiple newlines in single string", + input: "line1\nline2\nline3\nline4", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\n") + assert.Equal(t, 3, strings.Count(result, `\n`)) + }, + }, + { + name: "mixed control characters", + input: "start\nmiddle\rend\ttab", + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\n") + assert.NotContains(t, result, "\r") + assert.NotContains(t, result, "\t") + }, + }, + { + name: "very long string with embedded control chars", + input: strings.Repeat("a", 5000) + "\n" + strings.Repeat("b", 5000), + assertFn: func(t *testing.T, result string) { + t.Helper() + assert.NotContains(t, result, "\n") + assert.Contains(t, result, `\n`) + assert.True(t, len(result) > 10000) + }, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + result := sanitizeLogString(tt.input) + tt.assertFn(t, result) + }) + } +} + +func TestSanitizeFieldValue_TypeDispatch(t *testing.T) { + t.Run("string values are sanitized", func(t *testing.T) { + result := sanitizeFieldValue("value\ninjected") + s, ok := result.(string) + require.True(t, ok) + assert.NotContains(t, s, "\n") + assert.Contains(t, s, `\n`) + }) + + t.Run("integer values pass through", func(t *testing.T) { + result := sanitizeFieldValue(42) + assert.Equal(t, 42, result) + }) + + t.Run("boolean values pass through", func(t *testing.T) { + result := sanitizeFieldValue(true) + assert.Equal(t, true, result) + }) + + t.Run("nil values pass through", func(t *testing.T) { + result := sanitizeFieldValue(nil) + assert.Nil(t, result) + }) + + t.Run("error values are sanitized", func(t *testing.T) { + err := errors.New("some error\nwith newline") + result := sanitizeFieldValue(err) + s, ok := result.(string) + require.True(t, ok, "error values should be converted to sanitized strings") + assert.NotContains(t, s, "\n") + assert.Contains(t, s, `\n`) + assert.Equal(t, `some error\nwith newline`, s) + }) + + t.Run("struct values with newlines are sanitized", func(t *testing.T) { + type payload struct { + Msg string + } + result := sanitizeFieldValue(payload{Msg: "line1\nline2"}) + s, ok := result.(string) + require.True(t, ok, "composite types should be serialized to sanitized strings") + assert.NotContains(t, s, "\n") + }) + + t.Run("slice values with newlines are sanitized", func(t *testing.T) { + result := sanitizeFieldValue([]string{"a\nb", "c"}) + s, ok := result.(string) + require.True(t, ok, "slices should be serialized to sanitized strings") + assert.NotContains(t, s, "\n") + }) + + t.Run("map values with newlines are sanitized", func(t *testing.T) { + result := sanitizeFieldValue(map[string]string{"k": "v\ninjected"}) + s, ok := result.(string) + require.True(t, ok, "maps should be serialized to sanitized strings") + assert.NotContains(t, s, "\n") + }) + + t.Run("typed-nil error returns placeholder", func(t *testing.T) { + var err *customError // typed nil + result := sanitizeFieldValue(err) + assert.Equal(t, "", result, + "typed-nil error should return placeholder, not panic") + }) + + t.Run("typed-nil stringer returns placeholder", func(t *testing.T) { + var s *testStringer // typed nil + result := sanitizeFieldValue(s) + assert.Equal(t, "", result, + "typed-nil Stringer should return placeholder, not panic") + }) +} + +// customError is a typed error for testing typed-nil behavior. +type customError struct{ msg string } + +func (e *customError) Error() string { return e.msg } + +func TestSafeError_LevelFiltering(t *testing.T) { + var buf bytes.Buffer + withTestLoggerOutput(t, &buf) + + logger := &GoLogger{Level: LevelWarn} + + SafeError(logger, context.Background(), "should appear", errors.New("err"), false) + assert.Contains(t, buf.String(), "should appear") +} + +func TestSanitizeExternalResponse_VariousCodes(t *testing.T) { + tests := []struct { + code int + expected string + }{ + {200, "external system returned status 200"}, + {400, "external system returned status 400"}, + {401, "external system returned status 401"}, + {403, "external system returned status 403"}, + {404, "external system returned status 404"}, + {500, "external system returned status 500"}, + {502, "external system returned status 502"}, + {503, "external system returned status 503"}, + } + + for _, tt := range tests { + assert.Equal(t, tt.expected, SanitizeExternalResponse(tt.code)) + } +} diff --git a/runtime/goroutine_test.go b/runtime/goroutine_test.go new file mode 100644 index 0000000..ce7309b --- /dev/null +++ b/runtime/goroutine_test.go @@ -0,0 +1,448 @@ +//go:build unit + +package runtime + +import ( + "context" + "testing" + "time" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +// TestPanicPolicyString tests the String method of PanicPolicy. +func TestPanicPolicyString(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + policy PanicPolicy + expected string + }{ + { + name: "KeepRunning", + policy: KeepRunning, + expected: "KeepRunning", + }, + { + name: "CrashProcess", + policy: CrashProcess, + expected: "CrashProcess", + }, + { + name: "Unknown", + policy: PanicPolicy(99), + expected: "Unknown", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + result := tt.policy.String() + assert.Equal(t, tt.expected, result) + }) + } +} + +// TestRecoverAndLog_NoPanic tests that RecoverAndLog does nothing when no panic occurs. +func TestRecoverAndLog_NoPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + func() { + defer RecoverAndLog(logger, "test-no-panic") + // No panic here + }() + + assert.False(t, logger.wasPanicLogged(), "Should not log when no panic occurs") +} + +// TestRecoverAndLog_WithPanic tests that RecoverAndLog catches and logs panics. +func TestRecoverAndLog_WithPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + func() { + defer RecoverAndLog(logger, "test-with-panic") + + panic("test panic value") + }() + + assert.True(t, logger.wasPanicLogged(), "Should log when panic occurs") + assert.NotEmpty(t, logger.errorCalls, "Should have logged error") +} + +// TestRecoverAndCrash_NoPanic tests that RecoverAndCrash does nothing when no panic occurs. +func TestRecoverAndCrash_NoPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + func() { + defer RecoverAndCrash(logger, "test-no-panic") + // No panic here + }() + + assert.False(t, logger.wasPanicLogged(), "Should not log when no panic occurs") +} + +// TestRecoverAndCrash_WithPanic tests that RecoverAndCrash catches, logs, and re-panics. +func TestRecoverAndCrash_WithPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + defer func() { + r := recover() + require.NotNil(t, r, "Should re-panic after logging") + assert.Equal(t, "test panic value", r) + }() + + func() { + defer RecoverAndCrash(logger, "test-with-panic") + + panic("test panic value") + }() + + t.Fatal("Should not reach here - panic should propagate") +} + +// TestRecoverWithPolicy_KeepRunning tests policy-based recovery with KeepRunning. +func TestRecoverWithPolicy_KeepRunning(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + func() { + defer RecoverWithPolicy(logger, "test-keep-running", KeepRunning) + + panic("test panic") + }() + + assert.True(t, logger.wasPanicLogged(), "Should log the panic") +} + +// TestRecoverWithPolicy_CrashProcess tests policy-based recovery with CrashProcess. +func TestRecoverWithPolicy_CrashProcess(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + defer func() { + r := recover() + require.NotNil(t, r, "Should re-panic with CrashProcess policy") + }() + + func() { + defer RecoverWithPolicy(logger, "test-crash", CrashProcess) + + panic("test panic") + }() + + t.Fatal("Should not reach here") +} + +// TestSafeGo_NoPanic tests SafeGo with a function that doesn't panic. +func TestSafeGo_NoPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + done := make(chan struct{}) + + SafeGo(logger, "test-no-panic", KeepRunning, func() { + close(done) + }) + + select { + case <-done: + // Success - goroutine completed + case <-time.After(time.Second): + t.Fatal("Goroutine did not complete in time") + } + + assert.False(t, logger.wasPanicLogged(), "Should not log when no panic occurs") +} + +// TestSafeGo_WithPanic_KeepRunning tests SafeGo catching panics with KeepRunning policy. +func TestSafeGo_WithPanic_KeepRunning(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + done := make(chan struct{}) + + SafeGo(logger, "test-panic-keep-running", KeepRunning, func() { + defer close(done) + + panic("goroutine panic") + }) + + select { + case <-done: + // Success - goroutine completed (panic was caught) + case <-time.After(time.Second): + t.Fatal("Goroutine did not complete in time") + } + + require.True(t, logger.waitForPanicLog(time.Second), "Should log the panic") +} + +// TestSafeGoWithContext_NoPanic tests SafeGoWithContext with no panic. +func TestSafeGoWithContext_NoPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + done := make(chan struct{}) + + SafeGoWithContext(ctx, logger, "test-ctx-no-panic", KeepRunning, func(ctx context.Context) { + close(done) + }) + + select { + case <-done: + // Success + case <-time.After(time.Second): + t.Fatal("Goroutine did not complete in time") + } +} + +// TestSafeGoWithContext_WithCancellation tests context cancellation propagation. +func TestSafeGoWithContext_WithCancellation(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx, cancel := context.WithCancel(context.Background()) + done := make(chan struct{}) + + SafeGoWithContext(ctx, logger, "test-ctx-cancel", KeepRunning, func(ctx context.Context) { + <-ctx.Done() + close(done) + }) + + cancel() + + select { + case <-done: + // Success - context cancellation was received + case <-time.After(time.Second): + t.Fatal("Goroutine did not receive cancellation in time") + } +} + +// TestSafeGoWithContext_WithPanic tests SafeGoWithContext catching panics. +func TestSafeGoWithContext_WithPanic(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + done := make(chan struct{}) + + SafeGoWithContext(ctx, logger, "test-ctx-panic", KeepRunning, func(ctx context.Context) { + defer close(done) + + panic("context goroutine panic") + }) + + select { + case <-done: + // Success - panic was caught + case <-time.After(time.Second): + t.Fatal("Goroutine did not complete in time") + } + + require.True(t, logger.waitForPanicLog(time.Second), "Should log the panic") +} + +// TestSafeGoWithContext_WithComponent tests SafeGoWithContextAndComponent. +func TestSafeGoWithContext_WithComponent(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + done := make(chan struct{}) + + SafeGoWithContextAndComponent( + ctx, + logger, + "transaction", + "test-component", + KeepRunning, + func(ctx context.Context) { + defer close(done) + + panic("component panic") + }, + ) + + select { + case <-done: + // Success - panic was caught + case <-time.After(time.Second): + t.Fatal("Goroutine did not complete in time") + } + + require.True(t, logger.waitForPanicLog(time.Second), "Should log the panic") +} + +// TestRecoverWithPolicyAndContext_KeepRunning tests context-aware recovery with KeepRunning. +func TestRecoverWithPolicyAndContext_KeepRunning(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + + func() { + defer RecoverWithPolicyAndContext( + ctx, + logger, + "test-component", + "test-handler", + KeepRunning, + ) + + panic("context panic") + }() + + assert.True(t, logger.wasPanicLogged(), "Should log the panic") +} + +// TestRecoverWithPolicyAndContext_CrashProcess tests context-aware recovery with CrashProcess. +func TestRecoverWithPolicyAndContext_CrashProcess(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + + defer func() { + r := recover() + require.NotNil(t, r, "Should re-panic with CrashProcess policy") + }() + + func() { + defer RecoverWithPolicyAndContext(ctx, logger, "test-component", "test-crash", CrashProcess) + + panic("crash panic") + }() + + t.Fatal("Should not reach here") +} + +// TestRecoverAndLogWithContext tests RecoverAndLogWithContext. +func TestRecoverAndLogWithContext(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + + func() { + defer RecoverAndLogWithContext(ctx, logger, "test-component", "test-handler") + + panic("log context panic") + }() + + assert.True(t, logger.wasPanicLogged(), "Should log the panic") +} + +// TestRecoverAndCrashWithContext tests RecoverAndCrashWithContext. +func TestRecoverAndCrashWithContext(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + ctx := context.Background() + + defer func() { + r := recover() + require.NotNil(t, r, "Should re-panic after logging") + assert.Equal(t, "crash context panic", r) + }() + + func() { + defer RecoverAndCrashWithContext(ctx, logger, "test-component", "test-crash") + + panic("crash context panic") + }() + + t.Fatal("Should not reach here - panic should propagate") +} + +// TestPanicMetrics_NilFactory tests that nil factory doesn't cause panic. +func TestPanicMetrics_NilFactory(t *testing.T) { + t.Parallel() + + ctx := context.Background() + + var pm *PanicMetrics + pm.RecordPanicRecovered(ctx, "test", "test") + + recordPanicMetric(ctx, "test", "test") +} + +// TestErrorReporter_NilReporter tests that nil reporter doesn't cause panic. +func TestErrorReporter_NilReporter(t *testing.T) { + t.Parallel() + + ctx := context.Background() + + SetErrorReporter(nil) + + reportPanicToErrorService(ctx, "test panic", nil, "test", "test") + + assert.Nil(t, GetErrorReporter()) +} + +// TestErrorReporter_CustomReporter tests custom error reporter integration. +// +//nolint:paralleltest // Cannot use t.Parallel() - modifies global errorReporterInstance +func TestErrorReporter_CustomReporter(t *testing.T) { + ctx := context.Background() + + var capturedErr error + + var capturedTags map[string]string + + mockReporter := &mockErrorReporter{ + captureFunc: func(ctx context.Context, err error, tags map[string]string) { + capturedErr = err + capturedTags = tags + }, + } + + SetErrorReporter(nil) + SetErrorReporter(mockReporter) + + t.Cleanup(func() { SetErrorReporter(nil) }) + + reportPanicToErrorService( + ctx, + "test panic", + []byte("test stack trace"), + "transaction", + "worker", + ) + + require.NotNil(t, capturedErr) + assert.Contains(t, capturedErr.Error(), "test panic") + assert.Equal(t, "transaction", capturedTags["component"]) + assert.Equal(t, "worker", capturedTags["goroutine_name"]) + assert.Equal(t, "test stack trace", capturedTags["stack_trace"]) +} + +// mockErrorReporter is a test implementation of ErrorReporter. +type mockErrorReporter struct { + captureFunc func(ctx context.Context, err error, tags map[string]string) +} + +func (m *mockErrorReporter) CaptureException( + ctx context.Context, + err error, + tags map[string]string, +) { + if m.captureFunc != nil { + m.captureFunc(ctx, err, tags) + } +} diff --git a/runtime/helpers_test.go b/runtime/helpers_test.go new file mode 100644 index 0000000..e882ba1 --- /dev/null +++ b/runtime/helpers_test.go @@ -0,0 +1,56 @@ +//go:build unit + +package runtime + +import ( + "context" + "sync" + "sync/atomic" + "time" + + "github.com/LerianStudio/lib-observability/log" +) + +// testLogger is a test logger that captures log calls. +// It is shared across all runtime test files. +type testLogger struct { + mu sync.Mutex + errorCalls []string + lastMessage string + panicLogged atomic.Bool + logged chan struct{} // Signals when a panic was logged +} + +func newTestLogger() *testLogger { + return &testLogger{ + logged: make(chan struct{}, 1), // Buffered to avoid blocking + } +} + +func (logger *testLogger) Log(_ context.Context, _ log.Level, msg string, _ ...log.Field) { + logger.mu.Lock() + defer logger.mu.Unlock() + + logger.errorCalls = append(logger.errorCalls, msg) + logger.lastMessage = msg + logger.panicLogged.Store(true) + + // Signal that logging occurred (non-blocking) + select { + case logger.logged <- struct{}{}: + default: + } +} + +func (logger *testLogger) wasPanicLogged() bool { + return logger.panicLogged.Load() +} + +func (logger *testLogger) waitForPanicLog(timeout time.Duration) bool { + select { + case <-logger.logged: + return true + case <-time.After(timeout): + return false + } +} diff --git a/runtime/log_mode_link_test.go b/runtime/log_mode_link_test.go new file mode 100644 index 0000000..39a5646 --- /dev/null +++ b/runtime/log_mode_link_test.go @@ -0,0 +1,48 @@ +//go:build unit + +package runtime + +import ( + "bytes" + "context" + slog "log" + "sync" + "testing" + + "github.com/LerianStudio/lib-observability/log" + "github.com/stretchr/testify/assert" +) + +var runtimeLoggerOutputMu sync.Mutex + +func withRuntimeLoggerOutput(t *testing.T, output *bytes.Buffer) { + t.Helper() + + runtimeLoggerOutputMu.Lock() + defer t.Cleanup(func() { + runtimeLoggerOutputMu.Unlock() + }) + + originalOutput := slog.Writer() + slog.SetOutput(output) + t.Cleanup(func() { slog.SetOutput(originalOutput) }) +} + +func TestLogProductionModeResolverRegistration(t *testing.T) { + var buf bytes.Buffer + withRuntimeLoggerOutput(t, &buf) + + logger := &log.GoLogger{Level: log.LevelInfo} + initialMode := IsProductionMode() + t.Cleanup(func() { SetProductionMode(initialMode) }) + + SetProductionMode(false) + log.SafeError(logger, context.Background(), "runtime integration", assert.AnError, IsProductionMode()) + assert.Contains(t, buf.String(), "general error") + + buf.Reset() + SetProductionMode(true) + log.SafeError(logger, context.Background(), "runtime integration", assert.AnError, IsProductionMode()) + assert.Contains(t, buf.String(), "error_type=*errors.errorString") + assert.NotContains(t, buf.String(), "general error") +} diff --git a/runtime/metrics_test.go b/runtime/metrics_test.go new file mode 100644 index 0000000..5e954a8 --- /dev/null +++ b/runtime/metrics_test.go @@ -0,0 +1,58 @@ +//go:build unit + +package runtime + +import ( + "strings" + "testing" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/stretchr/testify/assert" +) + +// TestSanitizeMetricLabel tests the shared constant.SanitizeMetricLabel function. +func TestSanitizeMetricLabel(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + input string + expected string + }{ + { + name: "empty string", + input: "", + expected: "", + }, + { + name: "short string", + input: "component", + expected: "component", + }, + { + name: "exactly max length", + input: strings.Repeat("a", constant.MaxMetricLabelLength), + expected: strings.Repeat("a", constant.MaxMetricLabelLength), + }, + { + name: "exceeds max length", + input: strings.Repeat("b", constant.MaxMetricLabelLength+10), + expected: strings.Repeat("b", constant.MaxMetricLabelLength), + }, + { + name: "much longer than max", + input: strings.Repeat("c", 200), + expected: strings.Repeat("c", constant.MaxMetricLabelLength), + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + result := constant.SanitizeMetricLabel(tt.input) + assert.Equal(t, tt.expected, result) + assert.LessOrEqual(t, len(result), constant.MaxMetricLabelLength) + }) + } +} diff --git a/runtime/policy_test.go b/runtime/policy_test.go new file mode 100644 index 0000000..6483314 --- /dev/null +++ b/runtime/policy_test.go @@ -0,0 +1,110 @@ +//go:build unit + +package runtime + +import ( + "testing" + + "github.com/stretchr/testify/assert" +) + +// TestPanicPolicy_String tests the String method for all PanicPolicy values. +func TestPanicPolicy_String(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + policy PanicPolicy + expected string + }{ + { + name: "KeepRunning returns correct string", + policy: KeepRunning, + expected: "KeepRunning", + }, + { + name: "CrashProcess returns correct string", + policy: CrashProcess, + expected: "CrashProcess", + }, + { + name: "Unknown positive value returns Unknown", + policy: PanicPolicy(99), + expected: "Unknown", + }, + { + name: "Negative value returns Unknown", + policy: PanicPolicy(-1), + expected: "Unknown", + }, + { + name: "Large value returns Unknown", + policy: PanicPolicy(1000), + expected: "Unknown", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + result := tt.policy.String() + assert.Equal(t, tt.expected, result) + }) + } +} + +// TestPanicPolicy_IotaOrdering verifies the iota constant ordering. +func TestPanicPolicy_IotaOrdering(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + policy PanicPolicy + expectedValue int + }{ + { + name: "KeepRunning is 0 (first iota)", + policy: KeepRunning, + expectedValue: 0, + }, + { + name: "CrashProcess is 1 (second iota)", + policy: CrashProcess, + expectedValue: 1, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + assert.Equal(t, tt.expectedValue, int(tt.policy)) + }) + } +} + +// TestPanicPolicy_TypeSafety verifies type conversion behavior. +func TestPanicPolicy_TypeSafety(t *testing.T) { + t.Parallel() + + t.Run("explicit int conversion works", func(t *testing.T) { + t.Parallel() + + p := KeepRunning + assert.Equal(t, 0, int(p)) + + p = CrashProcess + assert.Equal(t, 1, int(p)) + }) + + t.Run("policy from int conversion", func(t *testing.T) { + t.Parallel() + + p := PanicPolicy(0) + assert.Equal(t, KeepRunning, p) + + p = PanicPolicy(1) + assert.Equal(t, CrashProcess, p) + }) +} diff --git a/runtime/recover_test.go b/runtime/recover_test.go new file mode 100644 index 0000000..d4d5e40 --- /dev/null +++ b/runtime/recover_test.go @@ -0,0 +1,186 @@ +//go:build unit + +package runtime + +import ( + "context" + "errors" + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +var ( + errTestPanicRecover = errors.New("test error") + errOriginalPanicRecover = errors.New("original error") +) + +// TestLogPanicWithStack_NilLogger tests that nil logger doesn't cause panic. +func TestLogPanicWithStack_NilLogger(t *testing.T) { + t.Parallel() + + require.NotPanics(t, func() { + logPanicWithStack(nil, "test", "panic value", []byte("stack trace")) + }) +} + +// TestLogPanicWithStack_ValidLogger tests logging with a valid logger. +func TestLogPanicWithStack_ValidLogger(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + stack := []byte("goroutine 1 [running]:\nmain.main()\n\t/path/to/file.go:10") + + logPanicWithStack(logger, "test-handler", "test panic", stack) + + assert.True(t, logger.wasPanicLogged()) + assert.NotEmpty(t, logger.errorCalls) +} + +// TestLogPanicWithStack_DifferentPanicTypes tests various panic value types. +func TestLogPanicWithStack_DifferentPanicTypes(t *testing.T) { + t.Parallel() + + type customStruct struct { + Field string + Code int + } + + tests := []struct { + name string + panicValue any + }{ + { + name: "string panic value", + panicValue: "something went wrong", + }, + { + name: "error panic value", + panicValue: errTestPanicRecover, + }, + { + name: "int panic value", + panicValue: 42, + }, + { + name: "struct panic value", + panicValue: customStruct{Field: "test", Code: 500}, + }, + { + name: "nil panic value", + panicValue: nil, + }, + { + name: "bool panic value", + panicValue: true, + }, + { + name: "float panic value", + panicValue: 3.14159, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + require.NotPanics(t, func() { + logPanicWithStack(logger, "test-handler", tt.panicValue, []byte("stack")) + }) + }) + } +} + +// TestRecoverAndLog_NilLogger tests recovery with nil logger. +func TestRecoverAndLog_NilLogger(t *testing.T) { + t.Parallel() + + require.NotPanics(t, func() { + func() { + defer RecoverAndLog(nil, "test") + panic("test panic") + }() + }) +} + +// TestRecoverAndCrash_NilLogger tests RecoverAndCrash with nil logger. +func TestRecoverAndCrash_NilLogger(t *testing.T) { + t.Parallel() + + defer func() { + r := recover() + require.NotNil(t, r, "Should re-panic even with nil logger") + }() + + func() { + defer RecoverAndCrash(nil, "test") + panic("test crash nil logger") + }() + + t.Fatal("Should not reach here") +} + +// TestRecoverWithPolicy_NilLogger tests recovery with nil logger. +func TestRecoverWithPolicy_NilLogger(t *testing.T) { + t.Parallel() + + require.NotPanics(t, func() { + func() { + defer RecoverWithPolicy(nil, "test", KeepRunning) + panic("nil logger test") + }() + }) +} + +// TestRecoverWithPolicyAndContext_NilCtx tests recovery with nil context. +func TestRecoverWithPolicyAndContext_NilCtx(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + require.NotPanics(t, func() { + func() { + defer RecoverWithPolicyAndContext(context.Background(), logger, "test", "test", KeepRunning) + panic("test") + }() + }) +} + +// TestSafeGo_NilFunction tests SafeGo with nil function. +func TestSafeGo_NilFunction(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + require.NotPanics(t, func() { + SafeGo(logger, "test-nil-fn", KeepRunning, nil) + }) +} + +// TestSafeGoWithContext_NilFunction tests SafeGoWithContext with nil function. +func TestSafeGoWithContext_NilFunction(t *testing.T) { + t.Parallel() + + logger := newTestLogger() + + require.NotPanics(t, func() { + SafeGoWithContext(context.Background(), logger, "test-nil-fn", KeepRunning, nil) + }) +} + +// TestToPanicError_ErrorValue tests toPanicError with error panic value. +func TestToPanicError_ErrorValue(t *testing.T) { + t.Parallel() + + // Test via production mode - production mode returns error type, not message + err := toPanicError(errOriginalPanicRecover, false) + require.NotNil(t, err) + assert.Contains(t, err.Error(), errOriginalPanicRecover.Error()) + + errProd := toPanicError(errOriginalPanicRecover, true) + require.NotNil(t, errProd) + // In production mode, error message is sanitized + assert.NotNil(t, errProd) +} diff --git a/runtime/tracing_test.go b/runtime/tracing_test.go new file mode 100644 index 0000000..451349c --- /dev/null +++ b/runtime/tracing_test.go @@ -0,0 +1,457 @@ +//go:build unit + +package runtime + +import ( + "context" + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/codes" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "go.opentelemetry.io/otel/sdk/trace/tracetest" + "go.opentelemetry.io/otel/trace" +) + +func newTestTracerProvider(t *testing.T) (*sdktrace.TracerProvider, *tracetest.SpanRecorder) { + t.Helper() + + recorder := tracetest.NewSpanRecorder() + provider := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(recorder)) + + t.Cleanup(func() { + _ = provider.Shutdown(context.Background()) + }) + + return provider, recorder +} + +func TestErrPanic(t *testing.T) { + t.Parallel() + + assert.NotNil(t, ErrPanic) + assert.Equal(t, "panic", ErrPanic.Error()) +} + +func TestPanicSpanEventName(t *testing.T) { + t.Parallel() + + assert.Equal(t, "panic.recovered", PanicSpanEventName) +} + +func TestRecordPanicToSpan(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + panicValue any + stack []byte + goroutineName string + wantEvent bool + wantStatus codes.Code + wantMessage string + }{ + { + name: "string panic value", + panicValue: "something went wrong", + stack: []byte("goroutine 1 [running]:\nmain.main()"), + goroutineName: "worker-1", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in worker-1", + }, + { + name: "error panic value", + panicValue: assert.AnError, + stack: []byte("stack trace here"), + goroutineName: "handler", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in handler", + }, + { + name: "integer panic value", + panicValue: 42, + stack: []byte(""), + goroutineName: "processor", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in processor", + }, + { + name: "nil panic value", + panicValue: nil, + stack: []byte("some stack"), + goroutineName: "main", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in main", + }, + { + name: "empty goroutine name", + panicValue: "panic!", + stack: []byte("trace"), + goroutineName: "", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in ", + }, + { + name: "empty stack trace", + panicValue: "error", + stack: nil, + goroutineName: "worker", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in worker", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + provider, recorder := newTestTracerProvider(t) + tracer := provider.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + + RecordPanicToSpan(ctx, tt.panicValue, tt.stack, tt.goroutineName) + span.End() + + spans := recorder.Ended() + require.Len(t, spans, 1) + + recordedSpan := spans[0] + + if tt.wantEvent { + require.NotEmpty(t, recordedSpan.Events(), "expected panic event to be recorded") + + var foundPanicEvent bool + + for _, event := range recordedSpan.Events() { + if event.Name == PanicSpanEventName { + foundPanicEvent = true + + attrMap := make(map[string]string) + for _, attr := range event.Attributes { + attrMap[string(attr.Key)] = attr.Value.AsString() + } + + assert.Contains(t, attrMap, "panic.value") + assert.Contains(t, attrMap, "panic.stack") + assert.Contains(t, attrMap, "panic.goroutine_name") + assert.Equal(t, tt.goroutineName, attrMap["panic.goroutine_name"]) + assert.NotContains( + t, + attrMap, + "panic.component", + "component should not be present for RecordPanicToSpan", + ) + } + } + + assert.True(t, foundPanicEvent, "panic.recovered event not found") + } + + assert.Equal(t, tt.wantStatus, recordedSpan.Status().Code) + assert.Equal(t, tt.wantMessage, recordedSpan.Status().Description) + }) + } +} + +func TestRecordPanicToSpanWithComponent(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + panicValue any + stack []byte + component string + goroutineName string + wantEvent bool + wantStatus codes.Code + wantMessage string + }{ + { + name: "with component", + panicValue: "panic error", + stack: []byte("stack trace"), + component: "transaction", + goroutineName: "CreateTransaction", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in transaction/CreateTransaction", + }, + { + name: "empty component", + panicValue: "error", + stack: []byte("trace"), + component: "", + goroutineName: "handler", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in handler", + }, + { + name: "empty goroutine name with component", + panicValue: "error", + stack: []byte("trace"), + component: "auth", + goroutineName: "", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in auth/", + }, + { + name: "both empty", + panicValue: "panic", + stack: []byte(""), + component: "", + goroutineName: "", + wantEvent: true, + wantStatus: codes.Error, + wantMessage: "panic recovered in ", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + provider, recorder := newTestTracerProvider(t) + tracer := provider.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + + RecordPanicToSpanWithComponent( + ctx, + tt.panicValue, + tt.stack, + tt.component, + tt.goroutineName, + ) + span.End() + + spans := recorder.Ended() + require.Len(t, spans, 1) + + recordedSpan := spans[0] + + if tt.wantEvent { + require.NotEmpty(t, recordedSpan.Events(), "expected panic event to be recorded") + + var foundPanicEvent bool + + for _, event := range recordedSpan.Events() { + if event.Name == PanicSpanEventName { + foundPanicEvent = true + + attrMap := make(map[string]string) + for _, attr := range event.Attributes { + attrMap[string(attr.Key)] = attr.Value.AsString() + } + + assert.Contains(t, attrMap, "panic.value") + assert.Contains(t, attrMap, "panic.stack") + assert.Contains(t, attrMap, "panic.goroutine_name") + assert.Equal(t, tt.goroutineName, attrMap["panic.goroutine_name"]) + + if tt.component != "" { + assert.Contains(t, attrMap, "panic.component") + assert.Equal(t, tt.component, attrMap["panic.component"]) + } + } + } + + assert.True(t, foundPanicEvent, "panic.recovered event not found") + } + + assert.Equal(t, tt.wantStatus, recordedSpan.Status().Code) + assert.Equal(t, tt.wantMessage, recordedSpan.Status().Description) + }) + } +} + +func TestRecordPanicToSpan_NoActiveSpan(t *testing.T) { + t.Parallel() + + ctx := context.Background() + + require.NotPanics(t, func() { + RecordPanicToSpan(ctx, "panic value", []byte("stack"), "goroutine") + }) +} + +func TestRecordPanicToSpanWithComponent_NoActiveSpan(t *testing.T) { + t.Parallel() + + ctx := context.Background() + + require.NotPanics(t, func() { + RecordPanicToSpanWithComponent( + ctx, + "panic value", + []byte("stack"), + "component", + "goroutine", + ) + }) +} + +func TestRecordPanicToSpan_NonRecordingSpan(t *testing.T) { + t.Parallel() + + provider := sdktrace.NewTracerProvider() + + t.Cleanup(func() { + _ = provider.Shutdown(context.Background()) + }) + + tracer := provider.Tracer("test") + _, nonRecordingSpan := tracer.Start( + context.Background(), + "test-span", + trace.WithSpanKind(trace.SpanKindInternal), + ) + nonRecordingSpan.End() + + ctx := trace.ContextWithSpan(context.Background(), nonRecordingSpan) + + require.NotPanics(t, func() { + RecordPanicToSpan(ctx, "panic value", []byte("stack"), "goroutine") + }) +} + +func TestRecordPanicToSpan_NilContext(t *testing.T) { + t.Parallel() + + require.NotPanics(t, func() { + RecordPanicToSpan(context.TODO(), "panic value", []byte("stack"), "goroutine") + }) +} + +func TestRecordPanicToSpanWithComponent_NilContext(t *testing.T) { + t.Parallel() + + require.NotPanics(t, func() { + RecordPanicToSpanWithComponent( + context.TODO(), + "panic value", + []byte("stack"), + "component", + "goroutine", + ) + }) +} + +func TestRecordPanicToSpan_VerifyErrorRecorded(t *testing.T) { + t.Parallel() + + provider, recorder := newTestTracerProvider(t) + tracer := provider.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + + panicValue := "test panic" + RecordPanicToSpan(ctx, panicValue, []byte("stack trace"), "worker") + span.End() + + spans := recorder.Ended() + require.Len(t, spans, 1) + + recordedSpan := spans[0] + events := recordedSpan.Events() + + var ( + hasExceptionEvent bool + hasPanicEvent bool + ) + + for _, event := range events { + if event.Name == "exception" { + hasExceptionEvent = true + + attrMap := make(map[string]string) + for _, attr := range event.Attributes { + attrMap[string(attr.Key)] = attr.Value.AsString() + } + + assert.Contains(t, attrMap["exception.message"], "panic") + assert.Contains(t, attrMap["exception.message"], panicValue) + } + + if event.Name == PanicSpanEventName { + hasPanicEvent = true + } + } + + assert.True(t, hasExceptionEvent, "expected exception event from RecordError") + assert.True(t, hasPanicEvent, "expected panic.recovered event") +} + +func TestRecordPanicToSpan_ComplexPanicValues(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + panicValue any + wantValue string + }{ + { + name: "struct panic value", + panicValue: struct{ Message string }{Message: "error"}, + wantValue: "{error}", + }, + { + name: "slice panic value", + panicValue: []string{"a", "b", "c"}, + wantValue: "[a b c]", + }, + { + name: "map panic value", + panicValue: map[string]int{"key": 1}, + wantValue: "map[key:1]", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + provider, recorder := newTestTracerProvider(t) + tracer := provider.Tracer("test") + ctx, span := tracer.Start(context.Background(), "test-span") + + RecordPanicToSpan(ctx, tt.panicValue, []byte("stack"), "goroutine") + span.End() + + spans := recorder.Ended() + require.Len(t, spans, 1) + + recordedSpan := spans[0] + + var panicEvent *sdktrace.Event + + for i := range recordedSpan.Events() { + if recordedSpan.Events()[i].Name == PanicSpanEventName { + panicEvent = &recordedSpan.Events()[i] + + break + } + } + + require.NotNil(t, panicEvent) + + var panicValueAttr string + + for _, attr := range panicEvent.Attributes { + if string(attr.Key) == "panic.value" { + panicValueAttr = attr.Value.AsString() + + break + } + } + + assert.Equal(t, tt.wantValue, panicValueAttr) + }) + } +} diff --git a/tracing/obfuscation_test.go b/tracing/obfuscation_test.go new file mode 100644 index 0000000..90477d0 --- /dev/null +++ b/tracing/obfuscation_test.go @@ -0,0 +1,1042 @@ +//go:build unit + +package tracing + +import ( + "encoding/json" + "fmt" + "strconv" + "strings" + "testing" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/attribute" +) + +// --------------------------------------------------------------------------- +// Helpers +// --------------------------------------------------------------------------- + +// mustRedactor builds a Redactor or fails the test. +func mustRedactor(t *testing.T, rules []RedactionRule, mask string) *Redactor { + t.Helper() + + r, err := NewRedactor(rules, mask) + require.NoError(t, err) + + return r +} + +// hashVia returns the HMAC-SHA256 hash of v using the given redactor's key. +func hashVia(r *Redactor, v string) string { + return r.hashString(v) +} + +// =========================================================================== +// 1. Redactor construction +// =========================================================================== + +func TestNewRedactor_EmptyRules(t *testing.T) { + t.Parallel() + + r, err := NewRedactor(nil, "") + require.NoError(t, err) + require.NotNil(t, r) + assert.Empty(t, r.rules) + assert.Equal(t, constant.ObfuscatedValue, r.maskValue, "empty mask should fall back to constant") +} + +func TestNewRedactor_CustomMaskValue(t *testing.T) { + t.Parallel() + + r, err := NewRedactor(nil, "REDACTED") + require.NoError(t, err) + assert.Equal(t, "REDACTED", r.maskValue) +} + +func TestNewRedactor_DefaultActionIsMask(t *testing.T) { + t.Parallel() + + r, err := NewRedactor([]RedactionRule{ + {FieldPattern: `^foo$`}, + }, "") + require.NoError(t, err) + require.Len(t, r.rules, 1) + assert.Equal(t, RedactionMask, r.rules[0].Action, "blank Action should default to mask") +} + +func TestNewRedactor_InvalidFieldPattern(t *testing.T) { + t.Parallel() + + _, err := NewRedactor([]RedactionRule{ + {FieldPattern: `[invalid`}, + }, "") + require.Error(t, err) + assert.Contains(t, err.Error(), "invalid redaction field pattern at index 0") +} + +func TestNewRedactor_InvalidPathPattern(t *testing.T) { + t.Parallel() + + _, err := NewRedactor([]RedactionRule{ + {PathPattern: `[broken`}, + }, "") + require.Error(t, err) + assert.Contains(t, err.Error(), "invalid redaction path pattern at index 0") +} + +func TestNewRedactor_MultipleRulesCompileCorrectly(t *testing.T) { + t.Parallel() + + r, err := NewRedactor([]RedactionRule{ + {FieldPattern: `^password$`, Action: RedactionMask}, + {FieldPattern: `^email$`, Action: RedactionHash}, + {PathPattern: `^session\.token$`, FieldPattern: `^token$`, Action: RedactionDrop}, + }, "***") + require.NoError(t, err) + require.Len(t, r.rules, 3) + assert.NotNil(t, r.rules[0].fieldRegex) + assert.Nil(t, r.rules[0].pathRegex) + assert.NotNil(t, r.rules[2].fieldRegex) + assert.NotNil(t, r.rules[2].pathRegex) +} + +// =========================================================================== +// 2. NewDefaultRedactor +// =========================================================================== + +func TestNewDefaultRedactor_IsNotNil(t *testing.T) { + t.Parallel() + + r := NewDefaultRedactor() + require.NotNil(t, r) + assert.NotEmpty(t, r.rules, "default redactor should have rules from DefaultSensitiveFields") + assert.Equal(t, constant.ObfuscatedValue, r.maskValue) +} + +func TestNewDefaultRedactor_MatchesSensitiveFields(t *testing.T) { + t.Parallel() + + r := NewDefaultRedactor() + + for _, field := range []string{"password", "token", "secret", "authorization", "apikey", "cvv", "ssn"} { + action, matched := r.actionFor("", field) + assert.True(t, matched, "field %q should match default rules", field) + assert.Equal(t, RedactionMask, action) + } +} + +func TestNewDefaultRedactor_CaseInsensitive(t *testing.T) { + t.Parallel() + + r := NewDefaultRedactor() + + for _, field := range []string{"Password", "PASSWORD", "pAsSwOrD"} { + _, matched := r.actionFor("", field) + assert.True(t, matched, "field %q should match case-insensitively", field) + } +} + +func TestNewDefaultRedactor_NonSensitiveFieldUnchanged(t *testing.T) { + t.Parallel() + + r := NewDefaultRedactor() + + _, matched := r.actionFor("", "username") + assert.False(t, matched) +} + +// =========================================================================== +// 3. actionFor (field and path matching) +// =========================================================================== + +func TestActionFor_NilRedactor(t *testing.T) { + t.Parallel() + + var r *Redactor + + action, matched := r.actionFor("any.path", "any") + assert.False(t, matched) + assert.Equal(t, RedactionAction(""), action) +} + +func TestActionFor_ExactFieldMatch(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^email$`, Action: RedactionHash}, + }, "") + + action, ok := r.actionFor("user.email", "email") + assert.True(t, ok) + assert.Equal(t, RedactionHash, action) +} + +func TestActionFor_RegexFieldPattern(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i).*password.*`, Action: RedactionMask}, + }, "") + + tests := []struct { + field string + matched bool + }{ + {"password", true}, + {"user_password", true}, + {"password_hash", true}, + {"newPassword", true}, + {"username", false}, + } + + for _, tt := range tests { + action, ok := r.actionFor("", tt.field) + assert.Equal(t, tt.matched, ok, "field=%q", tt.field) + + if tt.matched { + assert.Equal(t, RedactionMask, action) + } + } +} + +func TestActionFor_PathPatternOnly(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {PathPattern: `^config\.db\.password$`, Action: RedactionDrop}, + }, "") + + _, ok := r.actionFor("config.db.password", "password") + assert.True(t, ok, "path+field should match") + + _, ok = r.actionFor("user.password", "password") + assert.False(t, ok, "path should NOT match different prefix") +} + +func TestActionFor_CombinedFieldAndPathPattern(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^token$`, PathPattern: `^session\.`, Action: RedactionDrop}, + }, "") + + _, ok := r.actionFor("session.token", "token") + assert.True(t, ok) + + _, ok = r.actionFor("auth.token", "token") + assert.False(t, ok) +} + +func TestActionFor_NoMatch(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^secret$`, Action: RedactionMask}, + }, "") + + _, ok := r.actionFor("", "name") + assert.False(t, ok) +} + +func TestActionFor_FirstMatchWins(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionHash}, + {FieldPattern: `(?i)^password$`, Action: RedactionDrop}, + }, "") + + action, ok := r.actionFor("", "password") + assert.True(t, ok) + assert.Equal(t, RedactionHash, action, "first matching rule should win") +} + +// =========================================================================== +// 4. redactValue (mask / hash / drop) +// =========================================================================== + +func TestRedactValue_Mask(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + val, drop, applied := r.redactValue("", "password", "secret123") + assert.False(t, drop) + assert.True(t, applied) + assert.Equal(t, "***", val) +} + +func TestRedactValue_Hash(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^email$`, Action: RedactionHash}, + }, "") + + val, drop, applied := r.redactValue("", "email", "alice@example.com") + assert.False(t, drop) + assert.True(t, applied) + assert.Equal(t, hashVia(r, "alice@example.com"), val) +} + +func TestRedactValue_Hash_Deterministic(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^document$`, Action: RedactionHash}, + }, "") + + val1, _, _ := r.redactValue("", "document", "12345") + val2, _, _ := r.redactValue("", "document", "12345") + assert.Equal(t, val1, val2, "hashing the same value must be deterministic") +} + +func TestRedactValue_Hash_DifferentInputs(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^document$`, Action: RedactionHash}, + }, "") + + val1, _, _ := r.redactValue("", "document", "abc") + val2, _, _ := r.redactValue("", "document", "def") + assert.NotEqual(t, val1, val2, "different inputs must produce different hashes") +} + +func TestRedactValue_Drop(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^token$`, Action: RedactionDrop}, + }, "") + + val, drop, applied := r.redactValue("", "token", "tok_abc") + assert.True(t, drop) + assert.True(t, applied) + assert.Nil(t, val) +} + +func TestRedactValue_NoMatch(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^secret$`, Action: RedactionMask}, + }, "") + + val, drop, applied := r.redactValue("", "name", "Alice") + assert.False(t, drop) + assert.False(t, applied) + assert.Equal(t, "Alice", val) +} + +func TestRedactValue_NilRedactor(t *testing.T) { + t.Parallel() + + var r *Redactor + + val, drop, applied := r.redactValue("", "password", "secret") + assert.False(t, drop) + assert.False(t, applied) + assert.Equal(t, "secret", val) +} + +// =========================================================================== +// 5. hashString +// =========================================================================== + +func TestHashString_Deterministic(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + h1 := r.hashString("hello") + h2 := r.hashString("hello") + assert.Equal(t, h1, h2) +} + +func TestHashString_DifferentInputs(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + h1 := r.hashString("foo") + h2 := r.hashString("bar") + assert.NotEqual(t, h1, h2) +} + +func TestHashString_Empty(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + h := r.hashString("") + assert.NotEmpty(t, h, "hash of empty string should produce a non-empty output") + assert.True(t, strings.HasPrefix(h, "sha256:"), "hash should have sha256: prefix") +} + +func TestHashString_DifferentRedactorsProduceDifferentHashes(t *testing.T) { + t.Parallel() + + r1 := mustRedactor(t, nil, "") + r2 := mustRedactor(t, nil, "") + + h1 := r1.hashString("same-input") + h2 := r2.hashString("same-input") + assert.NotEqual(t, h1, h2, "different Redactors use different HMAC keys and should produce different hashes") +} + +// =========================================================================== +// 6. obfuscateStructFields -- flat maps +// =========================================================================== + +func TestObfuscateStructFields_FlatMap(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + {FieldPattern: `(?i)^email$`, Action: RedactionHash}, + }, "***") + + input := map[string]any{ + "name": "alice", + "email": "alice@example.com", + "password": "secret", + } + + result := obfuscateStructFields(input, "", r) + m, ok := result.(map[string]any) + require.True(t, ok) + assert.Equal(t, "alice", m["name"]) + assert.Equal(t, "***", m["password"]) + assert.Equal(t, hashVia(r, "alice@example.com"), m["email"]) +} + +func TestObfuscateStructFields_EmptyMap(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^password$`, Action: RedactionMask}, + }, "***") + + result := obfuscateStructFields(map[string]any{}, "", r) + m, ok := result.(map[string]any) + require.True(t, ok) + assert.Empty(t, m) +} + +func TestObfuscateStructFields_NilRedactor(t *testing.T) { + t.Parallel() + + input := map[string]any{ + "password": "secret", + } + + result := obfuscateStructFields(input, "", nil) + m := result.(map[string]any) + assert.Equal(t, "secret", m["password"], "nil redactor should pass values through") +} + +// =========================================================================== +// 7. obfuscateStructFields -- nested maps +// =========================================================================== + +func TestObfuscateStructFields_NestedTwoLevels(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "user": map[string]any{ + "name": "bob", + "password": "topsecret", + }, + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + user := result["user"].(map[string]any) + assert.Equal(t, "bob", user["name"]) + assert.Equal(t, "***", user["password"]) +} + +func TestObfuscateStructFields_NestedThreeLevels(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^secret$`, Action: RedactionDrop}, + }, "") + + input := map[string]any{ + "level1": map[string]any{ + "level2": map[string]any{ + "secret": "deep-value", + "visible": "ok", + }, + }, + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + l2 := result["level1"].(map[string]any)["level2"].(map[string]any) + assert.NotContains(t, l2, "secret") + assert.Equal(t, "ok", l2["visible"]) +} + +func TestObfuscateStructFields_NestedPathPattern(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {PathPattern: `^config\.database\.password$`, FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "HIDDEN") + + input := map[string]any{ + "config": map[string]any{ + "database": map[string]any{ + "password": "pg_pass", + "host": "localhost", + }, + }, + "password": "top-level-pass", + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + + dbCfg := result["config"].(map[string]any)["database"].(map[string]any) + assert.Equal(t, "HIDDEN", dbCfg["password"]) + assert.Equal(t, "localhost", dbCfg["host"]) + + assert.NotEqual(t, "HIDDEN", result["password"], "top-level password should NOT match path-scoped rule") +} + +// =========================================================================== +// 8. obfuscateStructFields -- arrays +// =========================================================================== + +func TestObfuscateStructFields_ArrayOfObjects(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^token$`, Action: RedactionDrop}, + }, "") + + input := []any{ + map[string]any{"id": "1", "token": "tok_a"}, + map[string]any{"id": "2", "token": "tok_b"}, + } + + result := obfuscateStructFields(input, "", r).([]any) + require.Len(t, result, 2) + + for i, item := range result { + m := item.(map[string]any) + assert.Equal(t, strconv.Itoa(i+1), m["id"]) + assert.NotContains(t, m, "token") + } +} + +func TestObfuscateStructFields_NestedArray(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "users": []any{ + map[string]any{"name": "alice", "password": "s1"}, + map[string]any{"name": "bob", "password": "s2"}, + }, + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + users := result["users"].([]any) + require.Len(t, users, 2) + + assert.Equal(t, "***", users[0].(map[string]any)["password"]) + assert.Equal(t, "***", users[1].(map[string]any)["password"]) + assert.Equal(t, "alice", users[0].(map[string]any)["name"]) + assert.Equal(t, "bob", users[1].(map[string]any)["name"]) +} + +func TestObfuscateStructFields_EmptyArray(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + result := obfuscateStructFields([]any{}, "", r).([]any) + assert.Empty(t, result) +} + +// =========================================================================== +// 9. obfuscateStructFields -- mixed types +// =========================================================================== + +func TestObfuscateStructFields_MixedTypes(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^secret$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "count": float64(42), + "active": true, + "secret": "classified", + "nothing": nil, + "name": "test", + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + assert.Equal(t, float64(42), result["count"]) + assert.Equal(t, true, result["active"]) + assert.Equal(t, "***", result["secret"]) + assert.Nil(t, result["nothing"]) + assert.Equal(t, "test", result["name"]) +} + +func TestObfuscateStructFields_NilValue(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "password": nil, + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + assert.Equal(t, "***", result["password"]) +} + +func TestObfuscateStructFields_EmptyStringValue(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "password": "", + } + + result := obfuscateStructFields(input, "", r).(map[string]any) + assert.Equal(t, "***", result["password"]) +} + +func TestObfuscateStructFields_NonMapNonArray(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + assert.Equal(t, "hello", obfuscateStructFields("hello", "", r)) + assert.Equal(t, float64(42), obfuscateStructFields(float64(42), "", r)) + assert.Equal(t, true, obfuscateStructFields(true, "", r)) + assert.Nil(t, obfuscateStructFields(nil, "", r)) +} + +// =========================================================================== +// 10. ObfuscateStruct (public API) +// =========================================================================== + +func TestObfuscateStruct_NilInput(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + result, err := ObfuscateStruct(nil, r) + require.NoError(t, err) + assert.Nil(t, result) +} + +func TestObfuscateStruct_NilRedactor(t *testing.T) { + t.Parallel() + + input := map[string]any{"password": "secret"} + + result, err := ObfuscateStruct(input, nil) + require.NoError(t, err) + assert.Equal(t, input, result, "nil redactor returns input unchanged") +} + +func TestObfuscateStruct_BothNil(t *testing.T) { + t.Parallel() + + result, err := ObfuscateStruct(nil, nil) + require.NoError(t, err) + assert.Nil(t, result) +} + +func TestObfuscateStruct_FlatMap(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "user": "alice", + "password": "s3cr3t", + } + + result, err := ObfuscateStruct(input, r) + require.NoError(t, err) + + m := result.(map[string]any) + assert.Equal(t, "alice", m["user"]) + assert.Equal(t, "***", m["password"]) +} + +func TestObfuscateStruct_UnmarshalableInput(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + _, err := ObfuscateStruct(make(chan int), r) + require.Error(t, err) +} + +// =========================================================================== +// 11. JSON round-trip tests +// =========================================================================== + +func TestJSONRoundTrip_SimplePayload(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + {FieldPattern: `(?i)^email$`, Action: RedactionHash}, + }, "***") + + jsonInput := `{"name":"alice","email":"alice@b.com","password":"pass"}` + + var parsed map[string]any + require.NoError(t, json.Unmarshal([]byte(jsonInput), &parsed)) + + result, err := ObfuscateStruct(parsed, r) + require.NoError(t, err) + + b, err := json.Marshal(result) + require.NoError(t, err) + + var decoded map[string]any + require.NoError(t, json.Unmarshal(b, &decoded)) + + assert.Equal(t, "alice", decoded["name"]) + assert.Equal(t, "***", decoded["password"]) + assert.Contains(t, decoded["email"].(string), "sha256:") +} + +func TestJSONRoundTrip_EmptyJSON(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, nil, "") + + var parsed map[string]any + require.NoError(t, json.Unmarshal([]byte(`{}`), &parsed)) + + result, err := ObfuscateStruct(parsed, r) + require.NoError(t, err) + + b, err := json.Marshal(result) + require.NoError(t, err) + assert.Equal(t, "{}", string(b)) +} + +func TestJSONRoundTrip_LargePayload(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + payload := make(map[string]any, 200) + for i := range 200 { + key := fmt.Sprintf("field_%d", i) + payload[key] = fmt.Sprintf("value_%d", i) + } + payload["password"] = "should_be_masked" + + result, err := ObfuscateStruct(payload, r) + require.NoError(t, err) + + m := result.(map[string]any) + assert.Equal(t, "***", m["password"]) + assert.Equal(t, "value_0", m["field_0"]) + assert.Equal(t, "value_199", m["field_199"]) +} + +// =========================================================================== +// 12. All three actions end-to-end through ObfuscateStruct +// =========================================================================== + +func TestObfuscateStruct_AllActionsEndToEnd(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + {FieldPattern: `(?i)^document$`, Action: RedactionHash}, + {FieldPattern: `(?i)^token$`, PathPattern: `^session\.token$`, Action: RedactionDrop}, + }, "***") + + input := map[string]any{ + "password": "secret", + "document": "123456789", + "session": map[string]any{"token": "tok_abc"}, + "name": "visible", + } + + result, err := ObfuscateStruct(input, r) + require.NoError(t, err) + + m := result.(map[string]any) + + assert.Equal(t, "***", m["password"]) + + hashed, ok := m["document"].(string) + require.True(t, ok) + assert.True(t, strings.HasPrefix(hashed, "sha256:")) + assert.NotEqual(t, "123456789", hashed) + + session, ok := m["session"].(map[string]any) + require.True(t, ok) + assert.NotContains(t, session, "token") + + assert.Equal(t, "visible", m["name"]) +} + +// =========================================================================== +// 13. Edge cases +// =========================================================================== + +func TestObfuscateStruct_NumericValues(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^pin$`, Action: RedactionMask}, + }, "***") + + input := map[string]any{ + "pin": float64(1234), + "count": float64(10), + } + + result, err := ObfuscateStruct(input, r) + require.NoError(t, err) + + m := result.(map[string]any) + assert.Equal(t, "***", m["pin"]) + assert.Equal(t, json.Number("10"), m["count"]) +} + +// =========================================================================== +// 14. Processor: redactAttributesByKey +// =========================================================================== + +func TestRedactAttributesByKey_NilRedactor(t *testing.T) { + t.Parallel() + + attrs := []attribute.KeyValue{ + attribute.String("foo", "bar"), + } + + result := redactAttributesByKey(attrs, nil) + assert.Equal(t, attrs, result, "nil redactor returns attributes unchanged") +} + +func TestRedactAttributesByKey_EmptyAttrs(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `^password$`, Action: RedactionMask}, + }, "***") + + result := redactAttributesByKey(nil, r) + assert.Empty(t, result) +} + +func TestRedactAttributesByKey_DottedKeyExtractsFieldName(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + attrs := []attribute.KeyValue{ + attribute.String("user.password", "secret"), + attribute.String("user.name", "alice"), + } + + result := redactAttributesByKey(attrs, r) + values := make(map[string]string, len(result)) + for _, a := range result { + values[string(a.Key)] = a.Value.AsString() + } + + assert.Equal(t, "***", values["user.password"]) + assert.Equal(t, "alice", values["user.name"]) +} + +func TestRedactAttributesByKey_DropRemovesAttribute(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^token$`, Action: RedactionDrop}, + }, "") + + attrs := []attribute.KeyValue{ + attribute.String("auth.token", "tok_123"), + attribute.String("auth.type", "bearer"), + } + + result := redactAttributesByKey(attrs, r) + require.Len(t, result, 1) + assert.Equal(t, "auth.type", string(result[0].Key)) +} + +func TestRedactAttributesByKey_HashProducesConsistentOutput(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^document$`, Action: RedactionHash}, + }, "") + + attrs := []attribute.KeyValue{ + attribute.String("customer.document", "123456789"), + } + + result1 := redactAttributesByKey(attrs, r) + result2 := redactAttributesByKey(attrs, r) + + require.Len(t, result1, 1) + require.Len(t, result2, 1) + assert.Equal(t, result1[0].Value.AsString(), result2[0].Value.AsString()) + assert.True(t, strings.HasPrefix(result1[0].Value.AsString(), "sha256:")) +} + +func TestRedactAttributesByKey_KeyWithoutDot(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + attrs := []attribute.KeyValue{ + attribute.String("password", "secret"), + } + + result := redactAttributesByKey(attrs, r) + require.Len(t, result, 1) + assert.Equal(t, "***", result[0].Value.AsString()) +} + +// =========================================================================== +// 15. Processor interface compliance +// =========================================================================== + +func TestAttrBagSpanProcessor_NoOpMethods(t *testing.T) { + t.Parallel() + + p := AttrBagSpanProcessor{} + assert.NoError(t, p.Shutdown(nil)) + assert.NoError(t, p.ForceFlush(nil)) +} + +func TestRedactingAttrBagSpanProcessor_NoOpMethods(t *testing.T) { + t.Parallel() + + p := RedactingAttrBagSpanProcessor{} + assert.NoError(t, p.Shutdown(nil)) + assert.NoError(t, p.ForceFlush(nil)) +} + +// =========================================================================== +// 16. RedactionAction constants +// =========================================================================== + +func TestRedactionActionConstants(t *testing.T) { + t.Parallel() + + assert.Equal(t, RedactionAction("mask"), RedactionMask) + assert.Equal(t, RedactionAction("hash"), RedactionHash) + assert.Equal(t, RedactionAction("drop"), RedactionDrop) +} + +// =========================================================================== +// 17. Concurrency safety +// =========================================================================== + +func TestObfuscateStruct_ConcurrentSafety(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + {FieldPattern: `(?i)^email$`, Action: RedactionHash}, + {FieldPattern: `(?i)^token$`, Action: RedactionDrop}, + }, "***") + + done := make(chan struct{}, 50) + for i := range 50 { + go func(idx int) { + defer func() { done <- struct{}{} }() + + payload := map[string]any{ + "id": fmt.Sprintf("user_%d", idx), + "password": "secret", + "email": fmt.Sprintf("user%d@test.com", idx), + "token": "tok_concurrent", + "data": map[string]any{ + "password": "nested_secret", + }, + } + + result, err := ObfuscateStruct(payload, r) + if err != nil { + t.Errorf("concurrent ObfuscateStruct failed: %v", err) + return + } + + m := result.(map[string]any) + if m["password"] != "***" { + t.Errorf("expected masked password, got %v", m["password"]) + } + }(i) + } + + for range 50 { + <-done + } +} + +func TestRedactAttributesByKey_ConcurrentSafety(t *testing.T) { + t.Parallel() + + r := mustRedactor(t, []RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + }, "***") + + attrs := []attribute.KeyValue{ + attribute.String("user.password", "secret"), + attribute.String("user.name", "alice"), + } + + done := make(chan struct{}, 50) + for range 50 { + go func() { + defer func() { done <- struct{}{} }() + result := redactAttributesByKey(attrs, r) + if len(result) != 2 { + t.Errorf("expected 2 attributes, got %d", len(result)) + } + }() + } + + for range 50 { + <-done + } +} diff --git a/tracing/otel_test.go b/tracing/otel_test.go new file mode 100644 index 0000000..78dc733 --- /dev/null +++ b/tracing/otel_test.go @@ -0,0 +1,1312 @@ +//go:build unit + +package tracing + +import ( + "context" + "os" + "strings" + "testing" + + observability "github.com/LerianStudio/lib-observability" + "github.com/LerianStudio/lib-observability/log" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/codes" + "go.opentelemetry.io/otel/propagation" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "go.opentelemetry.io/otel/sdk/trace/tracetest" + "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc/metadata" +) + +func unsetEnvVar(t *testing.T, key string) { + t.Helper() + + original, present := os.LookupEnv(key) + require.NoError(t, os.Unsetenv(key)) + t.Cleanup(func() { + if present { + require.NoError(t, os.Setenv(key, original)) + return + } + + require.NoError(t, os.Unsetenv(key)) + }) +} + +// =========================================================================== +// 1. NewTelemetry validation +// =========================================================================== + +func TestNewTelemetry_NilLogger(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + EnableTelemetry: false, + }) + require.ErrorIs(t, err, ErrNilTelemetryLogger) + assert.Nil(t, tl) +} + +func TestNewTelemetry_EnabledEmptyEndpoint(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + EnableTelemetry: true, + LibraryName: "test-lib", + Logger: log.NewNop(), + }) + require.ErrorIs(t, err, ErrEmptyEndpoint) + require.NotNil(t, tl, "must return noop Telemetry to prevent goroutine leaks") + assert.NotNil(t, tl.TracerProvider) + assert.NotNil(t, tl.MeterProvider) + assert.NotNil(t, tl.LoggerProvider) + assert.NotNil(t, tl.MetricsFactory) +} + +func TestNewTelemetry_EnabledWhitespaceEndpoint(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + EnableTelemetry: true, + CollectorExporterEndpoint: " ", + LibraryName: "test-lib", + Logger: log.NewNop(), + }) + require.ErrorIs(t, err, ErrEmptyEndpoint) + require.NotNil(t, tl, "must return noop Telemetry to prevent goroutine leaks") + assert.NotNil(t, tl.TracerProvider) + assert.NotNil(t, tl.MeterProvider) + assert.NotNil(t, tl.LoggerProvider) + assert.NotNil(t, tl.MetricsFactory) +} + +func TestNewTelemetry_EnabledEmptyEndpoint_SetsGlobalNoopProviders(t *testing.T) { + // Not parallel: mutates global OTEL providers. + prevTP := otel.GetTracerProvider() + prevMP := otel.GetMeterProvider() + t.Cleanup(func() { + otel.SetTracerProvider(prevTP) + otel.SetMeterProvider(prevMP) + }) + + tl, err := NewTelemetry(TelemetryConfig{ + EnableTelemetry: true, + LibraryName: "test-lib", + Logger: log.NewNop(), + }) + require.ErrorIs(t, err, ErrEmptyEndpoint) + require.NotNil(t, tl) + + assert.Same(t, tl.TracerProvider, otel.GetTracerProvider(), + "global tracer provider must be the noop instance") + assert.Same(t, tl.MeterProvider, otel.GetMeterProvider(), + "global meter provider must be the noop instance") +} + +func TestNewTelemetry_DisabledReturnsNoopProviders(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + ServiceName: "test-svc", + ServiceVersion: "0.1.0", + DeploymentEnv: "test", + EnableTelemetry: false, + Logger: log.NewNop(), + }) + require.NoError(t, err) + require.NotNil(t, tl) + assert.NotNil(t, tl.TracerProvider) + assert.NotNil(t, tl.MeterProvider) + assert.NotNil(t, tl.LoggerProvider) + assert.NotNil(t, tl.MetricsFactory) + assert.NotNil(t, tl.Redactor) + assert.NotNil(t, tl.Propagator) +} + +func TestNewTelemetry_DefaultPropagatorAndRedactor(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + EnableTelemetry: false, + Logger: log.NewNop(), + }) + require.NoError(t, err) + assert.NotNil(t, tl.Propagator, "default propagator should be set") + assert.NotNil(t, tl.Redactor, "default redactor should be set") +} + +func TestNewTelemetry_DeploymentEnvControlsSecurityPolicy(t *testing.T) { + t.Run("explicit production env blocks insecure exporter", func(t *testing.T) { + // Allow_insecure_otel is not set — production should block insecure exporter + unsetEnvVar(t, "ALLOW_INSECURE_OTEL") + t.Setenv("ENV_NAME", "") + t.Setenv("ENV", "") + t.Setenv("GO_ENV", "") + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + EnableTelemetry: true, + DeploymentEnv: "production", + CollectorExporterEndpoint: "http://collector:4317", + Logger: log.NewNop(), + }) + require.Error(t, err) + assert.Nil(t, tl) + }) + + t.Run("explicit local env allows insecure exporter", func(t *testing.T) { + unsetEnvVar(t, "ALLOW_INSECURE_OTEL") + t.Setenv("ENV_NAME", "") + t.Setenv("ENV", "") + t.Setenv("GO_ENV", "") + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + EnableTelemetry: true, + DeploymentEnv: "local", + CollectorExporterEndpoint: "http://collector:4317", + Logger: log.NewNop(), + }) + require.NoError(t, err) + require.NotNil(t, tl) + require.NotNil(t, tl.shutdownCtx) + require.Error(t, tl.ShutdownTelemetryWithContext(context.Background())) + }) +} + +// =========================================================================== +// 1b. Endpoint normalization +// =========================================================================== + +func TestNewTelemetry_EndpointNormalization(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + endpoint string + wantEndpoint string + wantInsecure bool + insecureOverride bool + }{ + { + name: "http scheme stripped and insecure inferred", + endpoint: "http://otel-collector:4317", + wantEndpoint: "otel-collector:4317", + wantInsecure: true, + }, + { + name: "https scheme stripped and insecure stays false", + endpoint: "https://otel-collector:4317", + wantEndpoint: "otel-collector:4317", + wantInsecure: false, + }, + { + name: "no scheme defaults to insecure", + endpoint: "otel-collector:4317", + wantEndpoint: "otel-collector:4317", + wantInsecure: true, + }, + { + name: "https with explicit insecure override preserved", + endpoint: "https://otel-collector:4317", + insecureOverride: true, + wantEndpoint: "otel-collector:4317", + wantInsecure: true, + }, + { + name: "http with trailing slash", + endpoint: "http://otel-collector:4317/", + wantEndpoint: "otel-collector:4317/", + wantInsecure: true, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + EnableTelemetry: false, + CollectorExporterEndpoint: tt.endpoint, + InsecureExporter: tt.insecureOverride, + Logger: log.NewNop(), + }) + require.NoError(t, err) + require.NotNil(t, tl) + assert.Equal(t, tt.wantEndpoint, tl.CollectorExporterEndpoint, + "endpoint should be normalized") + assert.Equal(t, tt.wantInsecure, tl.InsecureExporter, + "InsecureExporter should be inferred from scheme") + }) + } +} + +// =========================================================================== +// 1c. Endpoint environment variable normalization +// =========================================================================== + +func TestNormalizeEndpointEnvVars(t *testing.T) { + envKeys := []string{ + "OTEL_EXPORTER_OTLP_ENDPOINT", + "OTEL_EXPORTER_OTLP_TRACES_ENDPOINT", + "OTEL_EXPORTER_OTLP_METRICS_ENDPOINT", + } + + tests := []struct { + name string + value string + set bool + expected string + }{ + { + name: "bare host:port gets http scheme", + value: "10.10.0.202:4317", + set: true, + expected: "http://10.10.0.202:4317", + }, + { + name: "hostname:port gets http scheme", + value: "otel-collector:4317", + set: true, + expected: "http://otel-collector:4317", + }, + { + name: "http scheme preserved", + value: "http://otel-collector:4317", + set: true, + expected: "http://otel-collector:4317", + }, + { + name: "https scheme preserved", + value: "https://otel-collector:4317", + set: true, + expected: "https://otel-collector:4317", + }, + { + name: "whitespace trimmed before adding scheme", + value: " 10.10.0.202:4317 ", + set: true, + expected: "http://10.10.0.202:4317", + }, + { + name: "empty value skipped", + value: "", + set: true, + expected: "", + }, + { + name: "whitespace-only value skipped", + value: " ", + set: true, + expected: " ", + }, + { + name: "unset env var skipped", + value: "", + set: false, + expected: "", + }, + } + + for _, tt := range tests { + for _, key := range envKeys { + t.Run(tt.name+"/"+key, func(t *testing.T) { + if tt.set { + t.Setenv(key, tt.value) + } + + normalizeEndpointEnvVars() + + got := os.Getenv(key) + assert.Equal(t, tt.expected, got) + }) + } + } +} + +// =========================================================================== +// 2. Telemetry methods on nil receiver +// =========================================================================== + +func TestTelemetry_ApplyGlobals_NilReceiver(t *testing.T) { + t.Parallel() + + var tl *Telemetry + err := tl.ApplyGlobals() + require.ErrorIs(t, err, ErrNilTelemetry) +} + +func TestTelemetry_Tracer_NilReceiver(t *testing.T) { + t.Parallel() + + var tl *Telemetry + tr, err := tl.Tracer("test") + require.ErrorIs(t, err, ErrNilTelemetry) + assert.Nil(t, tr) +} + +func TestTelemetry_Meter_NilReceiver(t *testing.T) { + t.Parallel() + + var tl *Telemetry + m, err := tl.Meter("test") + require.ErrorIs(t, err, ErrNilTelemetry) + assert.Nil(t, m) +} + +func TestTelemetry_ShutdownTelemetry_NilReceiver(t *testing.T) { + t.Parallel() + + var tl *Telemetry + assert.NotPanics(t, func() { tl.ShutdownTelemetry() }) +} + +func TestTelemetry_ShutdownTelemetryWithContext_NilReceiver(t *testing.T) { + t.Parallel() + + var tl *Telemetry + err := tl.ShutdownTelemetryWithContext(context.Background()) + require.ErrorIs(t, err, ErrNilTelemetry) +} + +// =========================================================================== +// 3. Telemetry with disabled telemetry — provider access +// =========================================================================== + +func newDisabledTelemetry(t *testing.T) *Telemetry { + t.Helper() + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + ServiceName: "test-svc", + ServiceVersion: "0.1.0", + EnableTelemetry: false, + Logger: log.NewNop(), + }) + require.NoError(t, err) + + return tl +} + +func TestTelemetry_Disabled_Tracer(t *testing.T) { + t.Parallel() + + tl := newDisabledTelemetry(t) + tr, err := tl.Tracer("test-tracer") + require.NoError(t, err) + assert.NotNil(t, tr) +} + +func TestTelemetry_Disabled_Meter(t *testing.T) { + t.Parallel() + + tl := newDisabledTelemetry(t) + m, err := tl.Meter("test-meter") + require.NoError(t, err) + assert.NotNil(t, m) +} + +func TestTelemetry_Disabled_ShutdownWithContext(t *testing.T) { + t.Parallel() + + tl := newDisabledTelemetry(t) + err := tl.ShutdownTelemetryWithContext(context.Background()) + require.NoError(t, err) +} + +func TestTelemetry_Disabled_ShutdownTelemetry(t *testing.T) { + t.Parallel() + + tl := newDisabledTelemetry(t) + assert.NotPanics(t, func() { tl.ShutdownTelemetry() }) +} + +func TestTelemetry_Disabled_ApplyGlobals(t *testing.T) { + prevTP := otel.GetTracerProvider() + prevMP := otel.GetMeterProvider() + t.Cleanup(func() { + otel.SetTracerProvider(prevTP) + otel.SetMeterProvider(prevMP) + }) + + tl := newDisabledTelemetry(t) + require.NoError(t, tl.ApplyGlobals()) + assert.Same(t, tl.TracerProvider, otel.GetTracerProvider()) + assert.Same(t, tl.MeterProvider, otel.GetMeterProvider()) +} + +// =========================================================================== +// 4. ShutdownTelemetryWithContext — nil shutdown functions +// =========================================================================== + +func TestTelemetry_ShutdownWithContext_NilShutdownFuncs(t *testing.T) { + t.Parallel() + + tl := &Telemetry{ + TelemetryConfig: TelemetryConfig{Logger: log.NewNop()}, + shutdown: nil, + shutdownCtx: nil, + } + + err := tl.ShutdownTelemetryWithContext(context.Background()) + require.ErrorIs(t, err, ErrNilShutdown) +} + +func TestTelemetry_ShutdownWithContext_FallbackToShutdown(t *testing.T) { + t.Parallel() + + called := false + tl := &Telemetry{ + TelemetryConfig: TelemetryConfig{Logger: log.NewNop()}, + shutdown: func() { called = true }, + shutdownCtx: nil, + } + + err := tl.ShutdownTelemetryWithContext(context.Background()) + require.NoError(t, err) + assert.True(t, called, "fallback shutdown should have been invoked") +} + +// =========================================================================== +// 5. Context propagation helpers — nil/empty edge cases +// =========================================================================== + +func TestInjectTraceContext_NilCarrier(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { InjectTraceContext(context.Background(), nil) }) +} + +func TestExtractTraceContext_NilCarrier(t *testing.T) { + t.Parallel() + + ctx := context.Background() + result := ExtractTraceContext(ctx, nil) + assert.Equal(t, ctx, result) +} + +func TestInjectHTTPContext_NilHeaders(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { InjectHTTPContext(context.Background(), nil) }) +} + +func TestInjectGRPCContext_NilMD(t *testing.T) { + t.Parallel() + + md := InjectGRPCContext(context.Background(), nil) + require.NotNil(t, md, "nil md should produce a new metadata.MD") +} + +func TestExtractGRPCContext_NilMD(t *testing.T) { + t.Parallel() + + ctx := context.Background() + result := ExtractGRPCContext(ctx, nil) + assert.Equal(t, ctx, result) +} + +func TestExtractGRPCContext_WithTraceparentKey(t *testing.T) { + t.Parallel() + + md := metadata.MD{ + "traceparent": {"00-00112233445566778899aabbccddeeff-0123456789abcdef-01"}, + } + ctx := ExtractGRPCContext(context.Background(), md) + assert.NotNil(t, ctx) + + span := trace.SpanFromContext(ctx) + assert.Equal(t, "00112233445566778899aabbccddeeff", span.SpanContext().TraceID().String()) +} + +func TestInjectQueueTraceContext_ReturnsMap(t *testing.T) { + t.Parallel() + + headers := InjectQueueTraceContext(context.Background()) + require.NotNil(t, headers) +} + +func TestExtractQueueTraceContext_NilHeaders(t *testing.T) { + t.Parallel() + + ctx := context.Background() + result := ExtractQueueTraceContext(ctx, nil) + assert.Equal(t, ctx, result) +} + +func TestPrepareQueueHeaders_MergesHeaders(t *testing.T) { + t.Parallel() + + base := map[string]any{"routing_key": "my.queue"} + result := PrepareQueueHeaders(context.Background(), base) + require.NotNil(t, result) + assert.Equal(t, "my.queue", result["routing_key"]) +} + +func TestPrepareQueueHeaders_DoesNotMutateBase(t *testing.T) { + t.Parallel() + + base := map[string]any{"key": "val"} + result := PrepareQueueHeaders(context.Background(), base) + assert.Len(t, base, 1) + assert.NotSame(t, &base, &result) +} + +func TestInjectTraceHeadersIntoQueue_NilPointer(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { InjectTraceHeadersIntoQueue(context.Background(), nil) }) +} + +func TestInjectTraceHeadersIntoQueue_NilMap(t *testing.T) { + t.Parallel() + + var headers map[string]any + InjectTraceHeadersIntoQueue(context.Background(), &headers) + require.NotNil(t, headers, "nil *map should be initialized") +} + +func TestInjectTraceHeadersIntoQueue_ValidMap(t *testing.T) { + t.Parallel() + + headers := map[string]any{"existing": "value"} + InjectTraceHeadersIntoQueue(context.Background(), &headers) + assert.Equal(t, "value", headers["existing"]) +} + +func TestExtractTraceContextFromQueueHeaders_EmptyHeaders(t *testing.T) { + t.Parallel() + + ctx := context.Background() + result := ExtractTraceContextFromQueueHeaders(ctx, nil) + assert.Equal(t, ctx, result) + + result = ExtractTraceContextFromQueueHeaders(ctx, map[string]any{}) + assert.Equal(t, ctx, result) +} + +func TestExtractTraceContextFromQueueHeaders_NonStringValues(t *testing.T) { + t.Parallel() + + ctx := context.Background() + headers := map[string]any{ + "traceparent": 12345, + "other": true, + } + result := ExtractTraceContextFromQueueHeaders(ctx, headers) + assert.Equal(t, ctx, result, "non-string values should be skipped, returning original ctx") +} + +func TestExtractTraceContextFromQueueHeaders_ValidHeaders(t *testing.T) { + prev := otel.GetTextMapPropagator() + t.Cleanup(func() { otel.SetTextMapPropagator(prev) }) + otel.SetTextMapPropagator(propagation.TraceContext{}) + + headers := map[string]any{ + "traceparent": "00-00112233445566778899aabbccddeeff-0123456789abcdef-01", + } + ctx := ExtractTraceContextFromQueueHeaders(context.Background(), headers) + span := trace.SpanFromContext(ctx) + assert.Equal(t, "00112233445566778899aabbccddeeff", span.SpanContext().TraceID().String()) +} + +// =========================================================================== +// 6. GetTraceIDFromContext / GetTraceStateFromContext +// =========================================================================== + +func TestGetTraceIDFromContext_NoActiveSpan(t *testing.T) { + t.Parallel() + assert.Empty(t, GetTraceIDFromContext(context.Background())) +} + +func TestGetTraceStateFromContext_NoActiveSpan(t *testing.T) { + t.Parallel() + assert.Empty(t, GetTraceStateFromContext(context.Background())) +} + +func TestGetTraceIDFromContext_WithSpan(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + traceID := GetTraceIDFromContext(ctx) + assert.NotEmpty(t, traceID) + assert.Len(t, traceID, 32) // hex-encoded 16-byte trace ID +} + +func TestGetTraceStateFromContext_WithSpan(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + state := GetTraceStateFromContext(ctx) + assert.NotNil(t, state) +} + +// =========================================================================== +// 7. flattenAttributes via BodyToSpanAttributes / BuildAttributesFromValue +// =========================================================================== + +func TestFlattenAttributes_NestedMap(t *testing.T) { + t.Parallel() + + attrs, err := BuildAttributesFromValue("root", map[string]any{ + "user": map[string]any{ + "name": "alice", + "age": float64(30), + }, + "active": true, + }, nil) + require.NoError(t, err) + + m := attrsToMap(attrs) + assert.Equal(t, "alice", m["root.user.name"]) + assert.Contains(t, m, "root.user.age") + assert.Contains(t, m, "root.active") +} + +func TestFlattenAttributes_Array(t *testing.T) { + t.Parallel() + + attrs, err := BuildAttributesFromValue("items", map[string]any{ + "list": []any{"a", "b"}, + }, nil) + require.NoError(t, err) + + m := attrsToMap(attrs) + assert.Equal(t, "a", m["items.list.0"]) + assert.Equal(t, "b", m["items.list.1"]) +} + +func TestFlattenAttributes_NilValue(t *testing.T) { + t.Parallel() + + attrs, err := BuildAttributesFromValue("prefix", nil, nil) + require.NoError(t, err) + assert.Nil(t, attrs) +} + +func TestFlattenAttributes_StringTruncation(t *testing.T) { + t.Parallel() + + longStr := strings.Repeat("x", maxSpanAttributeStringLength+500) + attrs, err := BuildAttributesFromValue("k", map[string]any{"v": longStr}, nil) + require.NoError(t, err) + require.Len(t, attrs, 1) + assert.Len(t, attrs[0].Value.AsString(), maxSpanAttributeStringLength) +} + +func TestFlattenAttributes_DepthLimit(t *testing.T) { + t.Parallel() + + nested := map[string]any{"leaf": "value"} + for i := 0; i < maxAttributeDepth+5; i++ { + nested = map[string]any{"level": nested} + } + + var attrs []attribute.KeyValue + flattenAttributes(&attrs, "root", nested, 0) + + for _, a := range attrs { + assert.NotContains(t, string(a.Key), "leaf") + } +} + +func TestFlattenAttributes_CountLimit(t *testing.T) { + t.Parallel() + + wide := make(map[string]any, maxAttributeCount+50) + for i := 0; i < maxAttributeCount+50; i++ { + wide[strings.Repeat("k", 3)+strings.Repeat("0", 4)+string(rune('a'+i%26))+strings.Repeat("0", 3)] = "v" + } + + var attrs []attribute.KeyValue + flattenAttributes(&attrs, "root", wide, 0) + + assert.LessOrEqual(t, len(attrs), maxAttributeCount) +} + +func TestFlattenAttributes_JsonNumber(t *testing.T) { + t.Parallel() + + attrs, err := BuildAttributesFromValue("n", map[string]any{ + "count": float64(42), + }, nil) + require.NoError(t, err) + + m := attrsToMap(attrs) + assert.Contains(t, m, "n.count") +} + +func TestFlattenAttributes_BoolValues(t *testing.T) { + t.Parallel() + + attrs, err := BuildAttributesFromValue("cfg", map[string]any{ + "enabled": true, + "debug": false, + }, nil) + require.NoError(t, err) + assert.Len(t, attrs, 2) +} + +// =========================================================================== +// 8. sanitizeUTF8String +// =========================================================================== + +func TestSanitizeUTF8String_ValidString(t *testing.T) { + t.Parallel() + assert.Equal(t, "hello world", sanitizeUTF8String("hello world")) +} + +func TestSanitizeUTF8String_InvalidUTF8(t *testing.T) { + t.Parallel() + + invalid := "hello\x80world" + result := sanitizeUTF8String(invalid) + assert.NotContains(t, result, "\x80") + assert.Contains(t, result, "hello") + assert.Contains(t, result, "world") +} + +func TestSanitizeUTF8String_EmptyString(t *testing.T) { + t.Parallel() + assert.Equal(t, "", sanitizeUTF8String("")) +} + +func TestSanitizeUTF8String_Unicode(t *testing.T) { + t.Parallel() + assert.Equal(t, "日本語テスト", sanitizeUTF8String("日本語テスト")) +} + +// =========================================================================== +// 9. HandleSpan helpers +// =========================================================================== + +func TestHandleSpanBusinessErrorEvent_NilSpan(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { HandleSpanBusinessErrorEvent(nil, "evt", assert.AnError) }) +} + +func TestHandleSpanBusinessErrorEvent_NilError(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + assert.NotPanics(t, func() { HandleSpanBusinessErrorEvent(span, "evt", nil) }) +} + +func TestHandleSpanEvent_NilSpan(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { HandleSpanEvent(nil, "evt") }) +} + +func TestHandleSpanError_NilSpan(t *testing.T) { + t.Parallel() + assert.NotPanics(t, func() { HandleSpanError(nil, "msg", assert.AnError) }) +} + +func TestHandleSpanError_NilError(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + assert.NotPanics(t, func() { HandleSpanError(span, "msg", nil) }) +} + +// =========================================================================== +// 10. SetSpanAttributesFromValue +// =========================================================================== + +func TestSetSpanAttributesFromValue_NilSpan(t *testing.T) { + t.Parallel() + err := SetSpanAttributesFromValue(nil, "prefix", map[string]any{"k": "v"}, nil) + assert.NoError(t, err) +} + +func TestSetSpanAttributesFromValue_NilValue(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + err := SetSpanAttributesFromValue(span, "prefix", nil, nil) + assert.NoError(t, err) +} + +// =========================================================================== +// 11. BuildAttributesFromValue with redactor +// =========================================================================== + +func TestBuildAttributesFromValue_WithRedactor(t *testing.T) { + t.Parallel() + + r := NewDefaultRedactor() + attrs, err := BuildAttributesFromValue("req", map[string]any{ + "username": "alice", + "password": "secret123", + }, r) + require.NoError(t, err) + + m := attrsToMap(attrs) + assert.Equal(t, "alice", m["req.username"]) + assert.NotEqual(t, "secret123", m["req.password"], "password should be redacted") +} + +func TestBuildAttributesFromValue_StructInput(t *testing.T) { + t.Parallel() + + type payload struct { + ID string `json:"id"` + Name string `json:"name"` + } + + attrs, err := BuildAttributesFromValue("obj", payload{ID: "123", Name: "test"}, nil) + require.NoError(t, err) + + m := attrsToMap(attrs) + assert.Equal(t, "123", m["obj.id"]) + assert.Equal(t, "test", m["obj.name"]) +} + +// =========================================================================== +// 12. isNilShutdownable +// =========================================================================== + +func TestIsNilShutdownable_UntypedNil(t *testing.T) { + t.Parallel() + assert.True(t, isNilShutdownable(nil)) +} + +func TestIsNilShutdownable_TypedNil(t *testing.T) { + t.Parallel() + + var tp *sdktrace.TracerProvider + assert.True(t, isNilShutdownable(tp)) +} + +func TestIsNilShutdownable_ValidValue(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + assert.False(t, isNilShutdownable(tp)) +} + +// =========================================================================== +// 13. InjectGRPCContext key normalization +// =========================================================================== + +func TestInjectGRPCContext_TraceparentKeyNormalization(t *testing.T) { + prev := otel.GetTextMapPropagator() + t.Cleanup(func() { otel.SetTextMapPropagator(prev) }) + otel.SetTextMapPropagator(propagation.TraceContext{}) + + tp := sdktrace.NewTracerProvider() + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + + md := InjectGRPCContext(ctx, nil) + assert.NotEmpty(t, md.Get("traceparent"), "traceparent key should be lowercase") +} + +// =========================================================================== +// 14. Propagation round-trip +// =========================================================================== + +func TestQueuePropagation_RoundTrip(t *testing.T) { + prev := otel.GetTextMapPropagator() + prevTP := otel.GetTracerProvider() + t.Cleanup(func() { + otel.SetTextMapPropagator(prev) + otel.SetTracerProvider(prevTP) + }) + + otel.SetTextMapPropagator(propagation.TraceContext{}) + tp := sdktrace.NewTracerProvider() + otel.SetTracerProvider(tp) + + ctx, span := tp.Tracer("test").Start(context.Background(), "producer") + defer span.End() + + originalTraceID := span.SpanContext().TraceID().String() + + queueHeaders := InjectQueueTraceContext(ctx) + assert.NotEmpty(t, queueHeaders) + + consumerCtx := ExtractQueueTraceContext(context.Background(), queueHeaders) + extractedTraceID := GetTraceIDFromContext(consumerCtx) + assert.Equal(t, originalTraceID, extractedTraceID) + + _ = tp.Shutdown(context.Background()) +} + +func TestHTTPPropagation_InjectAndVerify(t *testing.T) { + prev := otel.GetTextMapPropagator() + prevTP := otel.GetTracerProvider() + t.Cleanup(func() { + otel.SetTextMapPropagator(prev) + otel.SetTracerProvider(prevTP) + }) + + otel.SetTextMapPropagator(propagation.TraceContext{}) + tp := sdktrace.NewTracerProvider() + otel.SetTracerProvider(tp) + + ctx, span := tp.Tracer("test").Start(context.Background(), "http-req") + defer span.End() + + headers := make(map[string][]string) + InjectHTTPContext(ctx, headers) + assert.NotEmpty(t, headers["Traceparent"]) + + _ = tp.Shutdown(context.Background()) +} + +// =========================================================================== +// 15. buildShutdownHandlers +// =========================================================================== + +func TestBuildShutdownHandlers_NoComponents(t *testing.T) { + t.Parallel() + + shutdown, shutdownCtx := buildShutdownHandlers(log.NewNop()) + assert.NotPanics(t, func() { shutdown() }) + + err := shutdownCtx(context.Background()) + assert.NoError(t, err) +} + +func TestBuildShutdownHandlers_WithProviders(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider() + shutdown, shutdownCtx := buildShutdownHandlers(log.NewNop(), tp) + + err := shutdownCtx(context.Background()) + assert.NoError(t, err) + + assert.NotPanics(t, func() { shutdown() }) +} + +func TestBuildShutdownHandlers_NilComponents(t *testing.T) { + t.Parallel() + + shutdown, shutdownCtx := buildShutdownHandlers(log.NewNop(), nil) + assert.NotPanics(t, func() { shutdown() }) + + err := shutdownCtx(context.Background()) + assert.NoError(t, err) +} + +func TestBuildShutdownHandlers_TypedNilProvider(t *testing.T) { + t.Parallel() + + var tp *sdktrace.TracerProvider + shutdown, shutdownCtx := buildShutdownHandlers(log.NewNop(), tp) + assert.NotPanics(t, func() { shutdown() }) + + err := shutdownCtx(context.Background()) + assert.NoError(t, err) +} + +// =========================================================================== +// 16. HandleSpan helpers with real spans +// =========================================================================== + +func TestHandleSpanBusinessErrorEvent_WithSpan(t *testing.T) { + t.Parallel() + + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + + HandleSpanBusinessErrorEvent(span, "business_error", assert.AnError) + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + require.NotEmpty(t, spans[0].Events, "business error event must be recorded") + assert.Equal(t, "business_error", spans[0].Events[0].Name) + assert.Equal(t, codes.Unset, spans[0].Status.Code, "business error must not set ERROR status") +} + +func TestHandleSpanEvent_WithSpan(t *testing.T) { + t.Parallel() + + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + + HandleSpanEvent(span, "my_event", attribute.String("key", "value")) + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + require.NotEmpty(t, spans[0].Events, "event must be recorded on span") + assert.Equal(t, "my_event", spans[0].Events[0].Name) +} + +func TestHandleSpanError_WithSpan(t *testing.T) { + t.Parallel() + + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + + HandleSpanError(span, "something failed", assert.AnError) + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + assert.Equal(t, codes.Error, spans[0].Status.Code, "HandleSpanError must set ERROR status") + assert.Contains(t, spans[0].Status.Description, "something failed") +} + +func TestHandleSpanError_EmptyMessage(t *testing.T) { + t.Parallel() + + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + _, span := tp.Tracer("test").Start(context.Background(), "op") + + HandleSpanError(span, "", assert.AnError) + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + assert.Equal(t, codes.Error, spans[0].Status.Code) + assert.False(t, strings.HasPrefix(spans[0].Status.Description, ": "), + "empty message must not produce leading ': ' in status description") +} + +// =========================================================================== +// 17. ShutdownTelemetry (non-nil) exercises error branch +// =========================================================================== + +func TestTelemetry_ShutdownTelemetry_NonNil(t *testing.T) { + t.Parallel() + + tl := newDisabledTelemetry(t) + assert.NotPanics(t, func() { tl.ShutdownTelemetry() }) +} + +// =========================================================================== +// 18. InjectGRPCContext / ExtractGRPCContext tracestate normalization +// =========================================================================== + +func TestInjectGRPCContext_TracestateNormalization(t *testing.T) { + prev := otel.GetTextMapPropagator() + t.Cleanup(func() { otel.SetTextMapPropagator(prev) }) + otel.SetTextMapPropagator(propagation.TraceContext{}) + + traceID, _ := trace.TraceIDFromHex("00112233445566778899aabbccddeeff") + spanID, _ := trace.SpanIDFromHex("0123456789abcdef") + ts := trace.TraceState{} + ts, _ = ts.Insert("vendor", "val") + + sc := trace.NewSpanContext(trace.SpanContextConfig{ + TraceID: traceID, + SpanID: spanID, + TraceFlags: trace.FlagsSampled, + TraceState: ts, + Remote: true, + }) + ctx := trace.ContextWithSpanContext(context.Background(), sc) + + md := InjectGRPCContext(ctx, nil) + assert.NotEmpty(t, md.Get("traceparent")) + assert.NotEmpty(t, md.Get("tracestate")) + _, hasPascal := md["Traceparent"] + assert.False(t, hasPascal) +} + +func TestExtractGRPCContext_TracestateNormalization(t *testing.T) { + prev := otel.GetTextMapPropagator() + t.Cleanup(func() { otel.SetTextMapPropagator(prev) }) + otel.SetTextMapPropagator(propagation.TraceContext{}) + + md := metadata.MD{ + "traceparent": {"00-00112233445566778899aabbccddeeff-0123456789abcdef-01"}, + "tracestate": {"vendor=val"}, + } + ctx := ExtractGRPCContext(context.Background(), md) + span := trace.SpanFromContext(ctx) + assert.Equal(t, "00112233445566778899aabbccddeeff", span.SpanContext().TraceID().String()) +} + +// =========================================================================== +// 19. Processor OnStart/OnEnd via tracer pipeline +// =========================================================================== + +func TestAttrBagSpanProcessor_OnStartOnEnd_WithTracer(t *testing.T) { + t.Parallel() + + tp := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(AttrBagSpanProcessor{})) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + assert.NotNil(t, ctx) +} + +func TestRedactingAttrBagSpanProcessor_OnStartOnEnd_WithTracer(t *testing.T) { + t.Parallel() + + p := RedactingAttrBagSpanProcessor{Redactor: NewDefaultRedactor()} + tp := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(p)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + assert.NotNil(t, ctx) +} + +func TestAttrBagSpanProcessor_OnStart_WithContextAttributes(t *testing.T) { + t.Parallel() + + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider( + sdktrace.WithSpanProcessor(AttrBagSpanProcessor{}), + sdktrace.WithSyncer(exporter), + ) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx := observability.ContextWithSpanAttributes(context.Background(), attribute.String("app.request.id", "r1")) + _, span := tp.Tracer("test").Start(ctx, "op") + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + found := false + for _, a := range spans[0].Attributes { + if a.Key == "app.request.id" && a.Value.AsString() == "r1" { + found = true + } + } + assert.True(t, found, "span must contain app.request.id=r1 from context bag") +} + +func TestRedactingAttrBagSpanProcessor_OnStart_WithContextAttributes(t *testing.T) { + t.Parallel() + + p := RedactingAttrBagSpanProcessor{Redactor: NewDefaultRedactor()} + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider( + sdktrace.WithSpanProcessor(p), + sdktrace.WithSyncer(exporter), + ) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx := observability.ContextWithSpanAttributes(context.Background(), + attribute.String("app.request.id", "r1"), + attribute.String("user.password", "secret"), + ) + _, span := tp.Tracer("test").Start(ctx, "op") + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + for _, a := range spans[0].Attributes { + if a.Key == "app.request.id" { + assert.Equal(t, "r1", a.Value.AsString(), "non-sensitive field should pass through") + } + if a.Key == "user.password" { + assert.NotEqual(t, "secret", a.Value.AsString(), "sensitive field should be redacted") + } + } +} + +func TestRedactingAttrBagSpanProcessor_OnStart_NilRedactor(t *testing.T) { + t.Parallel() + + p := RedactingAttrBagSpanProcessor{Redactor: nil} + tp := sdktrace.NewTracerProvider(sdktrace.WithSpanProcessor(p)) + t.Cleanup(func() { _ = tp.Shutdown(context.Background()) }) + + ctx, span := tp.Tracer("test").Start(context.Background(), "op") + defer span.End() + assert.NotNil(t, ctx) +} + +// =========================================================================== +// 20. flattenAttributes edge case: default branch +// =========================================================================== + +func TestFlattenAttributes_DefaultBranch(t *testing.T) { + t.Parallel() + + type custom struct{ X int } + var attrs []attribute.KeyValue + flattenAttributes(&attrs, "key", custom{X: 42}, 0) + require.Len(t, attrs, 1) + assert.Equal(t, "key", string(attrs[0].Key)) + assert.Contains(t, attrs[0].Value.AsString(), "42") +} + +// =========================================================================== +// 21. newResource coverage +// =========================================================================== + +func TestNewResource(t *testing.T) { + t.Parallel() + + cfg := &TelemetryConfig{ + ServiceName: "svc", + ServiceVersion: "1.0", + DeploymentEnv: "test", + } + r := cfg.newResource() + assert.NotNil(t, r) +} + +// =========================================================================== +// 22. BuildAttributesFromValue error path +// =========================================================================== + +func TestBuildAttributesFromValue_UnmarshalableValue(t *testing.T) { + t.Parallel() + + ch := make(chan int) + attrs, err := BuildAttributesFromValue("prefix", ch, nil) + assert.Error(t, err) + assert.Nil(t, attrs) +} + +// =========================================================================== +// helpers +// =========================================================================== + +func attrsToMap(attrs []attribute.KeyValue) map[string]string { + m := make(map[string]string, len(attrs)) + for _, a := range attrs { + m[string(a.Key)] = a.Value.Emit() + } + + return m +} diff --git a/tracing/v2_test.go b/tracing/v2_test.go new file mode 100644 index 0000000..406b5f6 --- /dev/null +++ b/tracing/v2_test.go @@ -0,0 +1,176 @@ +//go:build unit + +package tracing + +import ( + "context" + "encoding/json" + "testing" + + "github.com/LerianStudio/lib-observability/log" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/log/global" + "go.opentelemetry.io/otel/propagation" + sdktrace "go.opentelemetry.io/otel/sdk/trace" + "go.opentelemetry.io/otel/sdk/trace/tracetest" + oteltrace "go.opentelemetry.io/otel/trace" + "google.golang.org/grpc/metadata" +) + +func TestNewTelemetry_Disabled(t *testing.T) { + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + ServiceName: "test-service", + ServiceVersion: "1.0.0", + DeploymentEnv: "test", + EnableTelemetry: false, + Logger: &log.NopLogger{}, + }) + require.NoError(t, err) + require.NotNil(t, tl) + assert.NotNil(t, tl.TracerProvider) + assert.NotNil(t, tl.MeterProvider) + assert.NotNil(t, tl.MetricsFactory) +} + +func TestSetSpanAttributesFromValue_FlattensAndRedacts(t *testing.T) { + exporter := tracetest.NewInMemoryExporter() + tp := sdktrace.NewTracerProvider(sdktrace.WithSyncer(exporter)) + tracer := tp.Tracer("test") + + _, span := tracer.Start(context.Background(), "test-span") + err := SetSpanAttributesFromValue(span, "request", map[string]any{ + "user": map[string]any{ + "id": "u1", + "password": "top-secret", + }, + "amount": 12.3, + }, NewDefaultRedactor()) + require.NoError(t, err) + span.End() + + spans := exporter.GetSpans() + require.Len(t, spans, 1) + + attrs := spans[0].Attributes + find := func(key string) string { + for _, a := range attrs { + if string(a.Key) == key { + return a.Value.AsString() + } + } + return "" + } + + assert.Equal(t, "u1", find("request.user.id")) + assert.NotEmpty(t, find("request.user.password")) + assert.NotEqual(t, "top-secret", find("request.user.password")) + + if err := tp.Shutdown(context.Background()); err != nil { + t.Errorf("tp.Shutdown failed: %v", err) + } +} + +func TestPropagation_HTTP_GRPC_Queue(t *testing.T) { + prevPropagator := otel.GetTextMapPropagator() + prevTracerProvider := otel.GetTracerProvider() + t.Cleanup(func() { + otel.SetTextMapPropagator(prevPropagator) + otel.SetTracerProvider(prevTracerProvider) + }) + + otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{})) + + tp := sdktrace.NewTracerProvider() + otel.SetTracerProvider(tp) + tracer := tp.Tracer("test") + + ctx, span := tracer.Start(context.Background(), "root") + defer span.End() + + headers := map[string][]string{} + InjectHTTPContext(ctx, headers) + assert.NotEmpty(t, headers["Traceparent"]) + + md := InjectGRPCContext(ctx, nil) + assert.NotEmpty(t, md.Get("traceparent")) + + queueHeaders := InjectQueueTraceContext(ctx) + extracted := ExtractQueueTraceContext(context.Background(), queueHeaders) + assert.Equal(t, span.SpanContext().TraceID().String(), oteltrace.SpanFromContext(extracted).SpanContext().TraceID().String()) + + if err := tp.Shutdown(context.Background()); err != nil { + t.Errorf("tp.Shutdown failed: %v", err) + } +} + +func TestApplyGlobalsRestoresProviders(t *testing.T) { + prevPropagator := otel.GetTextMapPropagator() + prevTracerProvider := otel.GetTracerProvider() + prevMeterProvider := otel.GetMeterProvider() + prevLoggerProvider := global.GetLoggerProvider() + t.Cleanup(func() { + otel.SetTextMapPropagator(prevPropagator) + otel.SetTracerProvider(prevTracerProvider) + otel.SetMeterProvider(prevMeterProvider) + global.SetLoggerProvider(prevLoggerProvider) + }) + + tl, err := NewTelemetry(TelemetryConfig{ + LibraryName: "test-lib", + ServiceName: "test-service", + ServiceVersion: "1.0.0", + DeploymentEnv: "test", + EnableTelemetry: false, + Logger: &log.NopLogger{}, + }) + require.NoError(t, err) + + require.NoError(t, tl.ApplyGlobals()) + + assert.Same(t, tl.TracerProvider, otel.GetTracerProvider()) + assert.Same(t, tl.MeterProvider, otel.GetMeterProvider()) + assert.Same(t, tl.LoggerProvider, global.GetLoggerProvider()) +} + +func TestObfuscateStruct_Actions(t *testing.T) { + redactor, err := NewRedactor([]RedactionRule{ + {FieldPattern: `(?i)^password$`, Action: RedactionMask}, + {FieldPattern: `(?i)^document$`, Action: RedactionHash}, + {PathPattern: `(?i)^session\.token$`, FieldPattern: `(?i)^token$`, Action: RedactionDrop}, + }, "***") + require.NoError(t, err) + + payload := map[string]any{ + "password": "secret", + "document": "123456789", + "session": map[string]any{"token": "tok_abc"}, + } + + obfuscated, err := ObfuscateStruct(payload, redactor) + require.NoError(t, err) + + b, err := json.Marshal(obfuscated) + require.NoError(t, err) + + var decoded map[string]any + require.NoError(t, json.Unmarshal(b, &decoded)) + assert.Equal(t, "***", decoded["password"]) + assert.Contains(t, decoded["document"], "sha256:") + assert.NotContains(t, decoded["session"], "token") +} + +func TestHandleSpanHelpers_NoPanicsOnNil(t *testing.T) { + var span oteltrace.Span + assert.NotPanics(t, func() { + HandleSpanEvent(span, "event", attribute.String("k", "v")) + HandleSpanBusinessErrorEvent(span, "event", assert.AnError) + HandleSpanError(span, "msg", assert.AnError) + }) + assert.NotPanics(t, func() { + _ = ExtractGRPCContext(context.Background(), metadata.MD{}) + }) +} diff --git a/zap/injector_test.go b/zap/injector_test.go new file mode 100644 index 0000000..d24df19 --- /dev/null +++ b/zap/injector_test.go @@ -0,0 +1,155 @@ +//go:build unit + +package zap + +import ( + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.uber.org/zap/zapcore" +) + +func TestNewRejectsMissingOTelLibraryName(t *testing.T) { + t.Parallel() + + _, err := New(Config{Environment: EnvironmentProduction}) + require.Error(t, err) + assert.Contains(t, err.Error(), "OTelLibraryName is required") +} + +func TestNewRejectsInvalidEnvironment(t *testing.T) { + t.Parallel() + + _, err := New(Config{Environment: Environment("banana"), OTelLibraryName: "svc"}) + require.Error(t, err) + assert.Contains(t, err.Error(), "invalid environment") +} + +func TestNewAppliesEnvironmentDefaultLevel(t *testing.T) { + t.Parallel() + + logger, err := New(Config{Environment: EnvironmentDevelopment, OTelLibraryName: "svc"}) + require.NoError(t, err) + assert.Equal(t, zapcore.DebugLevel, logger.Level().Level()) + + logger, err = New(Config{Environment: EnvironmentProduction, OTelLibraryName: "svc"}) + require.NoError(t, err) + assert.Equal(t, zapcore.InfoLevel, logger.Level().Level()) +} + +func TestNewAppliesCustomLevel(t *testing.T) { + t.Parallel() + + logger, err := New(Config{Environment: EnvironmentProduction, OTelLibraryName: "svc", Level: "error"}) + require.NoError(t, err) + assert.Equal(t, zapcore.ErrorLevel, logger.Level().Level()) +} + +func TestNewRejectsInvalidCustomLevel(t *testing.T) { + t.Parallel() + + _, err := New(Config{Environment: EnvironmentProduction, OTelLibraryName: "svc", Level: "invalid"}) + require.Error(t, err) + assert.Contains(t, err.Error(), "invalid level") +} + +func TestCallerAttributionPointsToCallSite(t *testing.T) { + t.Parallel() + + logger, err := New(Config{ + Environment: EnvironmentDevelopment, + OTelLibraryName: "test-caller", + }) + require.NoError(t, err) + + raw := logger.Raw() + require.NotNil(t, raw, "Raw() should return the underlying zap logger") +} + +func TestNewWithLocalEnvironment(t *testing.T) { + t.Parallel() + + logger, err := New(Config{Environment: EnvironmentLocal, OTelLibraryName: "svc"}) + require.NoError(t, err) + require.NotNil(t, logger) + assert.Equal(t, zapcore.DebugLevel, logger.Level().Level()) +} + +func TestNewWithStagingEnvironment(t *testing.T) { + t.Parallel() + + logger, err := New(Config{Environment: EnvironmentStaging, OTelLibraryName: "svc"}) + require.NoError(t, err) + require.NotNil(t, logger) + assert.Equal(t, zapcore.InfoLevel, logger.Level().Level()) +} + +func TestNewWithUATEnvironment(t *testing.T) { + t.Parallel() + + logger, err := New(Config{Environment: EnvironmentUAT, OTelLibraryName: "svc"}) + require.NoError(t, err) + require.NotNil(t, logger) + assert.Equal(t, zapcore.InfoLevel, logger.Level().Level()) +} + +func TestResolveLevelEmptyForProductionDefaultsToInfo(t *testing.T) { + t.Parallel() + + level, err := resolveLevel(Config{Environment: EnvironmentProduction, Level: ""}) + require.NoError(t, err) + assert.Equal(t, zapcore.InfoLevel, level.Level()) +} + +func TestResolveLevelEmptyForLocalDefaultsToDebug(t *testing.T) { + t.Parallel() + + level, err := resolveLevel(Config{Environment: EnvironmentLocal, Level: ""}) + require.NoError(t, err) + assert.Equal(t, zapcore.DebugLevel, level.Level()) +} + +func TestBuildConfigByEnvironmentDev(t *testing.T) { + t.Setenv("LOG_ENCODING", "") + + cfg := buildConfigByEnvironment(EnvironmentDevelopment) + assert.Equal(t, "console", cfg.Encoding) + assert.True(t, cfg.Development) +} + +func TestBuildConfigByEnvironmentProd(t *testing.T) { + t.Setenv("LOG_ENCODING", "") + + cfg := buildConfigByEnvironment(EnvironmentProduction) + assert.Equal(t, "json", cfg.Encoding) + assert.False(t, cfg.Development) +} + +func TestResolveEncodingFromEnvVar(t *testing.T) { + t.Setenv("LOG_ENCODING", "json") + assert.Equal(t, "json", resolveEncoding(EnvironmentLocal)) + + t.Setenv("LOG_ENCODING", "console") + assert.Equal(t, "console", resolveEncoding(EnvironmentProduction)) + + t.Setenv("LOG_ENCODING", "invalid") + assert.Equal(t, "console", resolveEncoding(EnvironmentLocal)) + assert.Equal(t, "json", resolveEncoding(EnvironmentProduction)) +} + +func TestResolveLevelFromEnvVar(t *testing.T) { + t.Setenv("LOG_LEVEL", "warn") + + level, err := resolveLevel(Config{Environment: EnvironmentProduction, Level: ""}) + require.NoError(t, err) + assert.Equal(t, zapcore.WarnLevel, level.Level()) +} + +func TestResolveLevelConfigOverridesEnvVar(t *testing.T) { + t.Setenv("LOG_LEVEL", "warn") + + level, err := resolveLevel(Config{Environment: EnvironmentProduction, Level: "error"}) + require.NoError(t, err) + assert.Equal(t, zapcore.ErrorLevel, level.Level(), "Config.Level should take precedence over LOG_LEVEL env var") +} diff --git a/zap/zap_test.go b/zap/zap_test.go new file mode 100644 index 0000000..7e966f7 --- /dev/null +++ b/zap/zap_test.go @@ -0,0 +1,618 @@ +//go:build unit + +package zap + +import ( + "context" + "errors" + "strings" + "testing" + "time" + + logpkg "github.com/LerianStudio/lib-observability/log" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/trace" + "go.uber.org/zap" + "go.uber.org/zap/zapcore" + "go.uber.org/zap/zaptest/observer" +) + +func newObservedLogger(level zapcore.Level) (*Logger, *observer.ObservedLogs) { + core, observed := observer.New(level) + + return &Logger{logger: zap.New(core)}, observed +} + +// newBufferedLogger creates a Logger that writes JSON to a buffer for output +// inspection (e.g., verifying CWE-117 sanitization in serialized output). +func newBufferedLogger(level zapcore.Level) (*Logger, *strings.Builder) { + buf := &strings.Builder{} + ws := zapcore.AddSync(buf) + + encoderCfg := zap.NewProductionEncoderConfig() + encoderCfg.TimeKey = "" // omit timestamp for deterministic test output + core := zapcore.NewCore( + zapcore.NewJSONEncoder(encoderCfg), + ws, + level, + ) + + return &Logger{logger: zap.New(core)}, buf +} + +func TestLoggerNilReceiverFallsBackToNop(t *testing.T) { + var nilLogger *Logger + + assert.NotPanics(t, func() { + nilLogger.Info("message") + }) +} + +func TestLoggerNilUnderlyingFallsBackToNop(t *testing.T) { + logger := &Logger{} + + assert.NotPanics(t, func() { + logger.Info("message") + }) +} + +func TestStructuredLoggingMethods(t *testing.T) { + logger, observed := newObservedLogger(zapcore.DebugLevel) + + logger.Debug("debug message") + logger.Info("info message", String("request_id", "req-1")) + logger.Warn("warn message") + logger.Error("error message", ErrorField(errors.New("boom"))) + + entries := observed.All() + require.Len(t, entries, 4) + + assert.Equal(t, zapcore.DebugLevel, entries[0].Level) + assert.Equal(t, "debug message", entries[0].Message) + + assert.Equal(t, zapcore.InfoLevel, entries[1].Level) + assert.Equal(t, "info message", entries[1].Message) + assert.Equal(t, "req-1", entries[1].ContextMap()["request_id"]) + + assert.Equal(t, zapcore.WarnLevel, entries[2].Level) + assert.Equal(t, "warn message", entries[2].Message) + + assert.Equal(t, zapcore.ErrorLevel, entries[3].Level) + assert.Equal(t, "error message", entries[3].Message) +} + +func TestWithZapFieldsAddsFieldsWithoutMutatingParent(t *testing.T) { + logger, observed := newObservedLogger(zapcore.DebugLevel) + child := logger.WithZapFields(String("tenant_id", "t-1")) + + logger.Info("parent") + child.Info("child") + + entries := observed.All() + require.Len(t, entries, 2) + + _, parentHasTenant := entries[0].ContextMap()["tenant_id"] + assert.False(t, parentHasTenant) + assert.Equal(t, "t-1", entries[1].ContextMap()["tenant_id"]) +} + +func TestSyncReturnsNoErrorForHealthyLogger(t *testing.T) { + logger, _ := newObservedLogger(zapcore.DebugLevel) + + require.NoError(t, logger.Sync(context.Background())) +} + +// errorSink is a zapcore.WriteSyncer that always returns an error on Sync. +type errorSink struct{} + +func (e errorSink) Write(p []byte) (int, error) { return len(p), nil } +func (e errorSink) Sync() error { return errors.New("simulated sync failure") } + +// panicSink is a zapcore.WriteSyncer that panics on Sync, for testing +// the panic-recovery branch in Logger.Sync. +type panicSink struct{} + +func (p panicSink) Write(b []byte) (int, error) { return len(b), nil } +func (p panicSink) Sync() error { panic("boom from sync") } + +func TestSyncReturnsErrorFromFailingSink(t *testing.T) { + core := zapcore.NewCore( + zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()), + errorSink{}, + zapcore.DebugLevel, + ) + logger := &Logger{logger: zap.New(core)} + + err := logger.Sync(context.Background()) + require.Error(t, err) + assert.Contains(t, err.Error(), "simulated sync failure") +} + +func TestSyncRecoversPanicFromSink(t *testing.T) { + core := zapcore.NewCore( + zapcore.NewJSONEncoder(zap.NewProductionEncoderConfig()), + panicSink{}, + zapcore.DebugLevel, + ) + logger := &Logger{logger: zap.New(core)} + + err := logger.Sync(context.Background()) + require.Error(t, err) + assert.Contains(t, err.Error(), "panic during logger sync") +} + +func TestFieldHelpers(t *testing.T) { + logger, observed := newObservedLogger(zapcore.DebugLevel) + logger.Info( + "helpers", + String("s", "value"), + Int("i", 42), + Bool("b", true), + Duration("d", 2*time.Second), + ) + + entries := observed.All() + require.Len(t, entries, 1) + ctx := entries[0].ContextMap() + + assert.Equal(t, "value", ctx["s"]) + assert.Equal(t, int64(42), ctx["i"]) + assert.Equal(t, true, ctx["b"]) + assert.Equal(t, 2*time.Second, ctx["d"]) +} + +// =========================================================================== +// CWE-117: Log Injection Prevention for Zap Adapter +// =========================================================================== + +func TestCWE117_ZapMessageNewlineInjection(t *testing.T) { + tests := []struct { + name string + message string + }{ + { + name: "LF in message", + message: "legitimate\n{\"level\":\"error\",\"msg\":\"forged entry\"}", + }, + { + name: "CR in message", + message: "legitimate\r{\"level\":\"error\",\"msg\":\"forged entry\"}", + }, + { + name: "CRLF in message", + message: "legitimate\r\n{\"level\":\"error\",\"msg\":\"forged entry\"}", + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + logger.Info(tt.message) + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "CWE-117: zap JSON output must be a single line, got %d lines:\n%s", len(lines), out) + + assert.NotContains(t, out, "forged entry\"}", + "forged JSON entry must not appear as a separate parseable line") + }) + } +} + +func TestCWE117_ZapFieldValueInjection(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + + maliciousValue := "user123\n{\"level\":\"error\",\"msg\":\"ADMIN ACCESS GRANTED\"}" + logger.Info("login", String("user_id", maliciousValue)) + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "CWE-117: field value injection must not create extra JSON lines") +} + +func TestCWE117_ZapFieldNameInjection(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + + logger.Info("event", zap.String("key\ninjected", "value")) + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "CWE-117: field name injection must not create extra JSON lines") +} + +func TestCWE117_ZapNullByteInMessage(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + logger.Info("before\x00after") + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, "null byte must not split log output") +} + +func TestCWE117_ZapANSIEscapeInMessage(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + logger.Info("normal \x1b[31mRED\x1b[0m normal") + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, "ANSI escape must not split log output") +} + +func TestCWE117_ZapTabInMessage(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + logger.Info("col1\tcol2\tcol3") + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, "tabs must not split log output") + assert.Contains(t, out, "col1") + assert.Contains(t, out, "col2") +} + +func TestCWE117_ZapWithPreservesSanitization(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + child := logger.WithZapFields(String("session", "sess\n{\"forged\":true}")) + child.Info("child message") + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "CWE-117: With() must not allow field injection to split lines") +} + +func TestCWE117_ZapMultipleVectorsSimultaneously(t *testing.T) { + logger, buf := newBufferedLogger(zapcore.DebugLevel) + + msg := "event\n{\"level\":\"error\",\"msg\":\"forged\"}\ttab\r\nmore" + logger.Info(msg, + zap.String("user\nfake", "val\nfake"), + zap.String("safe_key", "safe_val")) + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "CWE-117: combined attack vectors must not create multiple JSON lines") +} + +// =========================================================================== +// Zap Level Filtering Tests +// =========================================================================== + +func TestZapLevelFiltering(t *testing.T) { + t.Run("info level suppresses debug", func(t *testing.T) { + logger, observed := newObservedLogger(zapcore.InfoLevel) + logger.Debug("should be suppressed") + logger.Info("should appear") + + entries := observed.All() + require.Len(t, entries, 1) + assert.Equal(t, "should appear", entries[0].Message) + }) + + t.Run("error level suppresses warn and below", func(t *testing.T) { + logger, observed := newObservedLogger(zapcore.ErrorLevel) + logger.Debug("suppressed") + logger.Info("suppressed") + logger.Warn("suppressed") + logger.Error("visible") + + entries := observed.All() + require.Len(t, entries, 1) + assert.Equal(t, "visible", entries[0].Message) + }) +} + +func TestZapRawReturnsUnderlyingLogger(t *testing.T) { + logger, _ := newObservedLogger(zapcore.DebugLevel) + raw := logger.Raw() + assert.NotNil(t, raw) +} + +func TestZapRawOnNilReturnsNop(t *testing.T) { + var logger *Logger + raw := logger.Raw() + assert.NotNil(t, raw, "Raw() on nil logger should return nop, not nil") +} + +func TestZapErrorFieldHelper(t *testing.T) { + logger, observed := newObservedLogger(zapcore.DebugLevel) + testErr := errors.New("test error") + logger.Error("failed", ErrorField(testErr)) + + entries := observed.All() + require.Len(t, entries, 1) + assert.Equal(t, "test error", entries[0].ContextMap()["error"].(string)) +} + +func TestZapAnyFieldHelper(t *testing.T) { + logger, observed := newObservedLogger(zapcore.DebugLevel) + logger.Info("test", + Any("slice", []string{"a", "b"}), + Any("map", map[string]int{"x": 1})) + + entries := observed.All() + require.Len(t, entries, 1) + ctx := entries[0].ContextMap() + assert.NotNil(t, ctx["slice"]) + assert.NotNil(t, ctx["map"]) +} + +// =========================================================================== +// log.Logger interface coverage +// =========================================================================== + +func TestLogAllLevels(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + logger.Log(context.Background(), logpkg.LevelDebug, "debug via Log") + logger.Log(context.Background(), logpkg.LevelInfo, "info via Log") + logger.Log(context.Background(), logpkg.LevelWarn, "warn via Log") + logger.Log(context.Background(), logpkg.LevelError, "error via Log") + + entries := observed.All() + require.Len(t, entries, 4) + + assert.Equal(t, zapcore.DebugLevel, entries[0].Level) + assert.Equal(t, zapcore.InfoLevel, entries[1].Level) + assert.Equal(t, zapcore.WarnLevel, entries[2].Level) + assert.Equal(t, zapcore.ErrorLevel, entries[3].Level) +} + +func TestLogDefaultLevel(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + logger.Log(context.Background(), logpkg.Level(99), "default level") + + entries := observed.All() + require.Len(t, entries, 1) + assert.Equal(t, zapcore.InfoLevel, entries[0].Level, "unknown level should default to Info") +} + +func TestLogWithNilContext(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + assert.NotPanics(t, func() { + //nolint:staticcheck // intentionally passing nil context + logger.Log(nil, logpkg.LevelInfo, "nil ctx message") + }) + + entries := observed.All() + require.Len(t, entries, 1) + assert.Equal(t, "nil ctx message", entries[0].Message) + _, hasTrace := entries[0].ContextMap()["trace_id"] + assert.False(t, hasTrace) +} + +func TestLogWithOTelSpanInjectsTraceFields(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + traceID, _ := trace.TraceIDFromHex("0af7651916cd43dd8448eb211c80319c") + spanID, _ := trace.SpanIDFromHex("b7ad6b7169203331") + sc := trace.NewSpanContext(trace.SpanContextConfig{ + TraceID: traceID, + SpanID: spanID, + TraceFlags: trace.FlagsSampled, + }) + ctx := trace.ContextWithSpanContext(context.Background(), sc) + + logger.Log(ctx, logpkg.LevelInfo, "traced message", logpkg.String("request_id", "req-42")) + + entries := observed.All() + require.Len(t, entries, 1) + + cm := entries[0].ContextMap() + assert.Equal(t, traceID.String(), cm["trace_id"]) + assert.Equal(t, spanID.String(), cm["span_id"]) + assert.Equal(t, "req-42", cm["request_id"]) +} + +func TestLogWithInvalidSpanDoesNotInjectTraceFields(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + logger.Log(context.Background(), logpkg.LevelInfo, "no span") + + entries := observed.All() + require.Len(t, entries, 1) + + _, hasTrace := entries[0].ContextMap()["trace_id"] + assert.False(t, hasTrace) +} + +func TestWithReturnsChildLogger(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + + child := logger.With(logpkg.String("component", "auth")) + child.Log(context.Background(), logpkg.LevelInfo, "child msg") + + logger.Log(context.Background(), logpkg.LevelInfo, "parent msg") + + entries := observed.All() + require.Len(t, entries, 2) + + assert.Equal(t, "auth", entries[0].ContextMap()["component"]) + _, parentHas := entries[1].ContextMap()["component"] + assert.False(t, parentHas) +} + +func TestWithGroupNamespacesFields(t *testing.T) { + t.Parallel() + + logger, buf := newBufferedLogger(zapcore.DebugLevel) + + grouped := logger.WithGroup("http") + grouped.Log(context.Background(), logpkg.LevelInfo, "grouped msg", logpkg.String("method", "GET")) + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + assert.Contains(t, out, `"http"`) + assert.Contains(t, out, `"method"`) + assert.Contains(t, out, `"GET"`) + assert.Contains(t, out, "grouped msg") +} + +func TestEnabledReportsCorrectly(t *testing.T) { + t.Parallel() + + tests := []struct { + name string + coreLevel zapcore.Level + checkLvl logpkg.Level + expected bool + }{ + {"debug enabled at debug", zapcore.DebugLevel, logpkg.LevelDebug, true}, + {"info enabled at debug", zapcore.DebugLevel, logpkg.LevelInfo, true}, + {"warn enabled at debug", zapcore.DebugLevel, logpkg.LevelWarn, true}, + {"error enabled at debug", zapcore.DebugLevel, logpkg.LevelError, true}, + {"debug disabled at info", zapcore.InfoLevel, logpkg.LevelDebug, false}, + {"info enabled at info", zapcore.InfoLevel, logpkg.LevelInfo, true}, + {"debug disabled at error", zapcore.ErrorLevel, logpkg.LevelDebug, false}, + {"info disabled at error", zapcore.ErrorLevel, logpkg.LevelInfo, false}, + {"warn disabled at error", zapcore.ErrorLevel, logpkg.LevelWarn, false}, + {"error enabled at error", zapcore.ErrorLevel, logpkg.LevelError, true}, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + logger, _ := newObservedLogger(tt.coreLevel) + assert.Equal(t, tt.expected, logger.Enabled(tt.checkLvl)) + }) + } +} + +func TestSyncWithCancelledContext(t *testing.T) { + t.Parallel() + + logger, _ := newObservedLogger(zapcore.DebugLevel) + + ctx, cancel := context.WithCancel(context.Background()) + cancel() + + err := logger.Sync(ctx) + require.Error(t, err) + assert.ErrorIs(t, err, context.Canceled) +} + +func TestLevelReturnsAtomicLevel(t *testing.T) { + t.Parallel() + + al := zap.NewAtomicLevelAt(zapcore.WarnLevel) + logger := &Logger{ + logger: zap.NewNop(), + atomicLevel: al, + } + + assert.Equal(t, zapcore.WarnLevel, logger.Level().Level()) +} + +func TestLevelOnNilReceiverReturnsDefault(t *testing.T) { + t.Parallel() + + var logger *Logger + level := logger.Level() + assert.Equal(t, zapcore.InfoLevel, level.Level(), + "nil receiver should return default AtomicLevel (info)") +} + +func TestWithGroupEmptyNameReturnsReceiver(t *testing.T) { + t.Parallel() + + logger, _ := newObservedLogger(zapcore.DebugLevel) + + same := logger.WithGroup("") + assert.Equal(t, logger, same, "WithGroup(\"\") should return the same logger") +} + +func TestSensitiveFieldRedaction(t *testing.T) { + t.Parallel() + + logger, observed := newObservedLogger(zapcore.DebugLevel) + logger.Log(context.Background(), logpkg.LevelInfo, "login", + logpkg.String("password", "super_secret"), + logpkg.String("api_key", "key-12345"), + logpkg.String("user_id", "u-42"), + ) + + entries := observed.All() + require.Len(t, entries, 1) + ctx := entries[0].ContextMap() + + assert.Equal(t, "[REDACTED]", ctx["password"], + "password field must be redacted") + assert.Equal(t, "[REDACTED]", ctx["api_key"], + "api_key field must be redacted") + assert.Equal(t, "u-42", ctx["user_id"], + "non-sensitive fields must pass through") +} + +func TestConsoleEncodingSanitizesMessages(t *testing.T) { + buf := &strings.Builder{} + ws := zapcore.AddSync(buf) + + encoderCfg := zap.NewDevelopmentEncoderConfig() + encoderCfg.TimeKey = "" + core := zapcore.NewCore( + zapcore.NewConsoleEncoder(encoderCfg), + ws, + zapcore.DebugLevel, + ) + + logger := &Logger{ + logger: zap.New(core), + consoleEncoding: true, + } + + logger.Log(context.Background(), logpkg.LevelInfo, "line1\nline2\rline3") + require.NoError(t, logger.Sync(context.Background())) + + out := buf.String() + lines := strings.Split(strings.TrimSpace(out), "\n") + assert.Len(t, lines, 1, + "console output with injection attempt must remain a single line, got: %q", out) +} + +func TestLogLevelToZapConversions(t *testing.T) { + t.Parallel() + + tests := []struct { + input logpkg.Level + expected zapcore.Level + }{ + {logpkg.LevelDebug, zapcore.DebugLevel}, + {logpkg.LevelInfo, zapcore.InfoLevel}, + {logpkg.LevelWarn, zapcore.WarnLevel}, + {logpkg.LevelError, zapcore.ErrorLevel}, + {logpkg.Level(42), zapcore.InfoLevel}, + } + + for _, tt := range tests { + t.Run(tt.input.String(), func(t *testing.T) { + t.Parallel() + assert.Equal(t, tt.expected, logLevelToZap(tt.input)) + }) + } +} From effe33cbfe4ad30c93da731acd103ebe82667475 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:30:30 -0300 Subject: [PATCH 10/26] feat(log): generate Logger mock via mockgen X-Lerian-Ref: 0x1 --- log/log_mock.go | 118 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 log/log_mock.go diff --git a/log/log_mock.go b/log/log_mock.go new file mode 100644 index 0000000..7935d85 --- /dev/null +++ b/log/log_mock.go @@ -0,0 +1,118 @@ +// Code generated by MockGen. DO NOT EDIT. +// Source: github.com/LerianStudio/lib-observability/log (interfaces: Logger) +// +// Generated by this command: +// +// mockgen --destination=log/log_mock.go --package=log github.com/LerianStudio/lib-observability/log Logger +// + +// Package log is a generated GoMock package. +package log + +import ( + context "context" + reflect "reflect" + + gomock "go.uber.org/mock/gomock" +) + +// MockLogger is a mock of Logger interface. +type MockLogger struct { + ctrl *gomock.Controller + recorder *MockLoggerMockRecorder + isgomock struct{} +} + +// MockLoggerMockRecorder is the mock recorder for MockLogger. +type MockLoggerMockRecorder struct { + mock *MockLogger +} + +// NewMockLogger creates a new mock instance. +func NewMockLogger(ctrl *gomock.Controller) *MockLogger { + mock := &MockLogger{ctrl: ctrl} + mock.recorder = &MockLoggerMockRecorder{mock} + return mock +} + +// EXPECT returns an object that allows the caller to indicate expected use. +func (m *MockLogger) EXPECT() *MockLoggerMockRecorder { + return m.recorder +} + +// Enabled mocks base method. +func (m *MockLogger) Enabled(level Level) bool { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Enabled", level) + ret0, _ := ret[0].(bool) + return ret0 +} + +// Enabled indicates an expected call of Enabled. +func (mr *MockLoggerMockRecorder) Enabled(level any) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Enabled", reflect.TypeOf((*MockLogger)(nil).Enabled), level) +} + +// Log mocks base method. +func (m *MockLogger) Log(ctx context.Context, level Level, msg string, fields ...Field) { + m.ctrl.T.Helper() + varargs := []any{ctx, level, msg} + for _, a := range fields { + varargs = append(varargs, a) + } + m.ctrl.Call(m, "Log", varargs...) +} + +// Log indicates an expected call of Log. +func (mr *MockLoggerMockRecorder) Log(ctx, level, msg any, fields ...any) *gomock.Call { + mr.mock.ctrl.T.Helper() + varargs := append([]any{ctx, level, msg}, fields...) + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Log", reflect.TypeOf((*MockLogger)(nil).Log), varargs...) +} + +// Sync mocks base method. +func (m *MockLogger) Sync(ctx context.Context) error { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "Sync", ctx) + ret0, _ := ret[0].(error) + return ret0 +} + +// Sync indicates an expected call of Sync. +func (mr *MockLoggerMockRecorder) Sync(ctx any) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "Sync", reflect.TypeOf((*MockLogger)(nil).Sync), ctx) +} + +// With mocks base method. +func (m *MockLogger) With(fields ...Field) Logger { + m.ctrl.T.Helper() + varargs := []any{} + for _, a := range fields { + varargs = append(varargs, a) + } + ret := m.ctrl.Call(m, "With", varargs...) + ret0, _ := ret[0].(Logger) + return ret0 +} + +// With indicates an expected call of With. +func (mr *MockLoggerMockRecorder) With(fields ...any) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "With", reflect.TypeOf((*MockLogger)(nil).With), fields...) +} + +// WithGroup mocks base method. +func (m *MockLogger) WithGroup(name string) Logger { + m.ctrl.T.Helper() + ret := m.ctrl.Call(m, "WithGroup", name) + ret0, _ := ret[0].(Logger) + return ret0 +} + +// WithGroup indicates an expected call of WithGroup. +func (mr *MockLoggerMockRecorder) WithGroup(name any) *gomock.Call { + mr.mock.ctrl.T.Helper() + return mr.mock.ctrl.RecordCallWithMethodType(mr.mock, "WithGroup", reflect.TypeOf((*MockLogger)(nil).WithGroup), name) +} From 7c1789ef52822a53a64ae048ce7ff5c70e06e6d2 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 17:30:30 -0300 Subject: [PATCH 11/26] chore: add Claude Code project context X-Lerian-Ref: 0x1 --- CLAUDE.md | 146 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 146 insertions(+) create mode 100644 CLAUDE.md diff --git a/CLAUDE.md b/CLAUDE.md new file mode 100644 index 0000000..1169c91 --- /dev/null +++ b/CLAUDE.md @@ -0,0 +1,146 @@ +# lib-observability — Claude Code Project Context + +## What this repo is + +`github.com/LerianStudio/lib-observability` — new standalone Go library extracting observability/telemetry from `lib-commons` (`../lib-commons`). Flat package layout at module root (no `pkg/` stutter). Go 1.25.9. + +## Architecture decisions (final, non-negotiable) + +| Decision | Choice | Rationale | +|---|---|---| +| Package naming | `tracing/` → `package tracing` | Dir/pkg mismatch is a papercut that compounds | +| Context carriers | Root `package observability` (`observability.go`) | Only observability helpers; `tracing/`, `log/`, `metrics/` consume it | +| Sensitive fields | `redaction/` package | Named by purpose, not scope; `IsSensitiveField(name string, extra ...string) bool` variadic | +| HTTP middleware | `middleware/` package | Separate from core tracing primitives | +| Streaming telemetry | `streaming/` package | Pure telemetry — no franz-go/kafka dep needed | + +## Current repo state (as of last session) + +### Branch: `feat/migrate-from-lib-commons` (open PR #2 on GitHub) + +**Already merged to develop (PR #1):** bootstrap — CI/CD, go.mod, Makefile, scaffold dirs + +**In PR #2 — already committed:** +- `constants/` — OTEL attrs, metric names, event names, headers, obfuscation +- `redaction/` — `IsSensitiveField`, `DefaultSensitiveFields` (variadic extension) +- `observability.go` + `system.go` — context carriers + CPU/mem helpers (root package) +- `log/` — Logger interface, GoLogger (CWE-117), NopLogger, sanitizer +- `metrics/` — MetricsFactory, fluent Counter/Gauge/Histogram builders, domain recorders +- `runtime/` — panic recovery, PanicMetrics, SafeGo, ErrorReporter +- `assert/` — Asserter, AssertionMetrics, financial predicates +- `tracing/` — OpenTelemetry SDK bootstrap, span helpers, propagation, redaction engine (renamed from `package opentelemetry`) +- `zap/` — zap adapter with OTEL bridge, trace_id/span_id injection + +**lib-commons circular dep:** fully removed — `tracing/otel.go` uses self-contained `isStrictEnvironment()` instead of `commons.EffectiveSecurityTier`. + +## What still needs to be done (in PR #2 — session was interrupted here) + +### 1. Apply CodeRabbit fixes (7 valid issues) + +| File | Fix | +|---|---| +| `constants/headers.go:9` | `HeaderTraceparent="traceparent"` (lowercase W3C); `HeaderTraceparentPascal="Traceparent"` (keep distinct) — currently both are `"Traceparent"` (duplicate bug) | +| `zap/zap.go:193` | `Debug/Info/Warn/Error` bypass `sanitizeConsoleMsg` — CWE-117 gap; route through sanitizer | +| `assert/predicates.go:345` | `TransactionHasOperations([" "])` returns true — add blank-after-trim check | +| `tracing/obfuscation.go:136` | `fieldRegex==nil` falls back to `IsSensitiveField` instead of "match any" — logic bug | +| `tracing/obfuscation.go:191` | HMAC fallback uses plain SHA256 — use deterministic HMAC fallback key for consistency | +| `tracing/otel.go:536` | `sanitizeSpanMessage` only redacts first Bearer/Basic token — loop to redact all | +| `zap/injector.go:45` | `strings.TrimSpace(OTelLibraryName)==""` validation — whitespace passes currently | + +### 2. Migrate HTTP/gRPC middleware → `middleware/` package + +Source: `../lib-commons/commons/net/http/` +Files to port: +- `withTelemetry.go` → `middleware/telemetry.go` (`TelemetryMiddleware`, gRPC unary interceptor) +- `withTelemetry_helpers.go` → `middleware/helpers.go` (URL sanitization, route exclusion, `resolveGRPCRequestID`) +- `withTelemetry_metrics.go` → `middleware/metrics.go` (background system metrics collector) +- `context_span.go` → `middleware/context_span.go` (`SetHandlerSpanAttributes`, `SetTenantSpanAttribute`) + +Import remapping: `commons/opentelemetry` → `github.com/LerianStudio/lib-observability/tracing`, etc. +Package: `package middleware` +Fiber dep already in go.mod. + +### 3. Migrate streaming telemetry → `streaming/` package + +Source: `../lib-commons/commons/streaming/` +Files to port (telemetry only — NO franz-go dependency): +- `emit_span.go` → `streaming/emit_span.go` +- `metrics.go` → `streaming/metrics.go` +- `metrics_recorders.go` → `streaming/metrics_recorders.go` + +These only import `log` and `metrics` (OTEL) — clean extraction. +Package: `package streaming` + +### 4. Port test files from lib-commons + +Source files → target: +- `../lib-commons/commons/opentelemetry/*_test.go` (7 files) → `tracing/` +- `../lib-commons/commons/log/*_test.go` (3 files) → `log/` +- `../lib-commons/commons/zap/*_test.go` (2 files) → `zap/` +- `../lib-commons/commons/runtime/*_test.go` (7 files) → `runtime/` +- `../lib-commons/commons/assert/*_test.go` (4 files) → `assert/` +- `../lib-commons/commons/net/http/withTelemetry*_test.go` (2 files) → `middleware/` + +Import remapping in all test files: `lib-commons/v5/commons/X` → `lib-observability/X` + +### 5. Generate `log/log_mock.go` + +The `//go:generate` directive points to a non-existent generated file. Run: +```bash +go install go.uber.org/mock/mockgen@latest +cd /home/gbrecci/Documents/dev/projects/lerianstudio/lib-observability +mockgen --destination=log/log_mock.go --package=log github.com/LerianStudio/lib-observability/log Logger +``` + +### 6. After all above: validate + +```bash +go build ./... +go vet ./... +go test -tags=unit ./... +go mod tidy +``` + +## PR #2 context + +- URL: https://github.com/LerianStudio/lib-observability/pull/2 +- Reviewer comments: CodeRabbit (technical) + Gandalf (strategic, score 7/10) +- Gandalf's score path: 7→8 (declare phases) → 9 (middleware+streaming+tests) → 10 (docs+CI coverage) +- User decision: do it all in this PR — no phases, complete migration + +## How to call Gandalf (Lerian AI team member) + +```bash +RESP=$(curl -s -X POST http://gandalf.heron-justitia.ts.net:18792/task \ + -H "Content-Type: application/json" \ + -d '{"action":"ask","message":"YOUR QUESTION HERE","context":"lib-observability migration from lib-commons"}') +TASK_ID=$(echo $RESP | jq -r .task_id) +# Poll: +for i in $(seq 1 60); do + RESULT=$(curl -s http://gandalf.heron-justitia.ts.net:18792/task/$TASK_ID) + STATUS=$(echo $RESULT | jq -r .status) + [ "$STATUS" != "processing" ] && echo $RESULT | jq -r .response && break + sleep 5 +done +``` + +Use Gandalf for: Lerian environment context, team decisions, architecture choices specific to Midaz services. +Ask the user directly for: scope decisions, priority changes, anything Gandalf can't answer clearly. + +## Key file references + +| What | Path | +|---|---| +| Source lib | `../lib-commons/commons/` | +| HTTP middleware source | `../lib-commons/commons/net/http/` | +| Streaming telemetry source | `../lib-commons/commons/streaming/{emit_span,metrics,metrics_recorders}.go` | +| Test files source | Per package above | +| PR #2 | https://github.com/LerianStudio/lib-observability/pull/2 | + +## Commit convention + +```bash +git commit -S -m "feat(scope): message" --trailer "X-Lerian-Ref: 0x1" +``` +Always sign (`-S`), always include trailer. Conventional commits. +Use `/ring:commit` skill for smart grouping. From 2fe6f48b718aa572662662f56026aab3fa7d0c56 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 18:01:07 -0300 Subject: [PATCH 12/26] chore(deps): bump golang.org/x/net to v0.53.0 Addresses CVE GO-2026-4918 - infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE. X-Lerian-Ref: 0x1 --- go.mod | 6 +++--- go.sum | 12 ++++++------ 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/go.mod b/go.mod index b076336..7f826f4 100644 --- a/go.mod +++ b/go.mod @@ -48,9 +48,9 @@ require ( go.opentelemetry.io/auto/sdk v1.2.1 // indirect go.opentelemetry.io/proto/otlp v1.10.0 // indirect go.uber.org/multierr v1.11.0 // indirect - golang.org/x/net v0.52.0 // indirect - golang.org/x/sys v0.42.0 // indirect - golang.org/x/text v0.35.0 // indirect + golang.org/x/net v0.53.0 // indirect + golang.org/x/sys v0.43.0 // indirect + golang.org/x/text v0.36.0 // indirect google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 // indirect google.golang.org/genproto/googleapis/rpc v0.0.0-20260401024825-9d38bb4040a9 // indirect google.golang.org/protobuf v1.36.11 // indirect diff --git a/go.sum b/go.sum index c88ebfc..340e165 100644 --- a/go.sum +++ b/go.sum @@ -102,15 +102,15 @@ go.uber.org/zap v1.28.0 h1:IZzaP1Fv73/T/pBMLk4VutPl36uNC+OSUh3JLG3FIjo= go.uber.org/zap v1.28.0/go.mod h1:rDLpOi171uODNm/mxFcuYWxDsqWSAVkFdX4XojSKg/Q= go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc= go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg= -golang.org/x/net v0.52.0 h1:He/TN1l0e4mmR3QqHMT2Xab3Aj3L9qjbhRm78/6jrW0= -golang.org/x/net v0.52.0/go.mod h1:R1MAz7uMZxVMualyPXb+VaqGSa3LIaUqk0eEt3w36Sw= +golang.org/x/net v0.53.0 h1:d+qAbo5L0orcWAr0a9JweQpjXF19LMXJE8Ey7hwOdUA= +golang.org/x/net v0.53.0/go.mod h1:JvMuJH7rrdiCfbeHoo3fCQU24Lf5JJwT9W3sJFulfgs= golang.org/x/sys v0.0.0-20190916202348-b4ddaad3f8a3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg= -golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo= -golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw= -golang.org/x/text v0.35.0 h1:JOVx6vVDFokkpaq1AEptVzLTpDe9KGpj5tR4/X+ybL8= -golang.org/x/text v0.35.0/go.mod h1:khi/HExzZJ2pGnjenulevKNX1W67CUy0AsXcNubPGCA= +golang.org/x/sys v0.43.0 h1:Rlag2XtaFTxp19wS8MXlJwTvoh8ArU6ezoyFsMyCTNI= +golang.org/x/sys v0.43.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw= +golang.org/x/text v0.36.0 h1:JfKh3XmcRPqZPKevfXVpI1wXPTqbkE5f7JA92a55Yxg= +golang.org/x/text v0.36.0/go.mod h1:NIdBknypM8iqVmPiuco0Dh6P5Jcdk8lJL0CUebqK164= gonum.org/v1/gonum v0.17.0 h1:VbpOemQlsSMrYmn7T2OUvQ4dqxQXU+ouZFQsZOx50z4= gonum.org/v1/gonum v0.17.0/go.mod h1:El3tOrEuMpv2UdMrbNlKEh9vd86bmQ6vqIcDwxEOc1E= google.golang.org/genproto/googleapis/api v0.0.0-20260401024825-9d38bb4040a9 h1:VPWxll4HlMw1Vs/qXtN7BvhZqsS9cdAittCNvVENElA= From 2f95661c53f064fd411782ea21bb402173910024 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 18:01:17 -0300 Subject: [PATCH 13/26] fix(middleware): address CodeRabbit review on new middleware package Batch SetAttributes calls in SetExceptionSpanAttributes and SetDisputeSpanAttributes. Tighten UUID regex to strict 8-4-4-4-12 pattern. Add comment explaining null/nil string handling rationale. X-Lerian-Ref: 0x1 --- middleware/context_span.go | 12 ++++++++---- middleware/helpers.go | 4 +++- 2 files changed, 11 insertions(+), 5 deletions(-) diff --git a/middleware/context_span.go b/middleware/context_span.go index 5dced34..356cd41 100644 --- a/middleware/context_span.go +++ b/middleware/context_span.go @@ -54,8 +54,10 @@ func SetExceptionSpanAttributes(span trace.Span, tenantID, exceptionID uuid.UUID return } - span.SetAttributes(attribute.String("tenant.id", tenantID.String())) - span.SetAttributes(attribute.String("exception.id", exceptionID.String())) + span.SetAttributes( + attribute.String("tenant.id", tenantID.String()), + attribute.String("exception.id", exceptionID.String()), + ) } // SetDisputeSpanAttributes adds tenant_id and dispute_id attributes to a trace span. @@ -64,6 +66,8 @@ func SetDisputeSpanAttributes(span trace.Span, tenantID, disputeID uuid.UUID) { return } - span.SetAttributes(attribute.String("tenant.id", tenantID.String())) - span.SetAttributes(attribute.String("dispute.id", disputeID.String())) + span.SetAttributes( + attribute.String("tenant.id", tenantID.String()), + attribute.String("dispute.id", disputeID.String()), + ) } diff --git a/middleware/helpers.go b/middleware/helpers.go index bb9f75f..c356ba3 100644 --- a/middleware/helpers.go +++ b/middleware/helpers.go @@ -13,7 +13,7 @@ import ( ) // uuidPattern matches standard UUID v4 strings (8-4-4-4-12 hex digits). -var uuidPattern = regexp.MustCompile(`[0-9a-fA-F-]{36}`) +var uuidPattern = regexp.MustCompile(`[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}`) // internalServicePattern matches Lerian internal service user-agent strings. var internalServicePattern = regexp.MustCompile(`^[\w-]+/[\d.]+\s+LerianStudio$`) @@ -110,6 +110,8 @@ func replaceUUIDWithPlaceholder(path string) string { } // isNilOrEmptyString reports whether a string pointer is nil or the trimmed value is empty. +// "null" and "nil" are treated as empty to handle JSON null serialization artifacts +// where some encoders emit the literal string "null" or "nil" instead of a JSON null. func isNilOrEmptyString(s *string) bool { return s == nil || strings.TrimSpace(*s) == "" || strings.TrimSpace(*s) == "null" || strings.TrimSpace(*s) == "nil" } From e58a97b357b73b0715248ca1e9663881bbcfb3e5 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 18:05:48 -0300 Subject: [PATCH 14/26] fix(streaming): add nolint directives for scaffolded symbols tracerName, emitSpanName, and setEmitSpanAttributes are defined but not yet called since the Emit() method has not been migrated. Suppress unused linter warnings with nolint and TODO comments. X-Lerian-Ref: 0x1 --- streaming/emit_span.go | 3 +++ 1 file changed, 3 insertions(+) diff --git a/streaming/emit_span.go b/streaming/emit_span.go index 16f6f59..b00fde4 100644 --- a/streaming/emit_span.go +++ b/streaming/emit_span.go @@ -7,17 +7,20 @@ import ( "github.com/LerianStudio/lib-observability/log" ) +//nolint:unused // TODO: used by Emit() method once kafka producer is migrated // tracerName is the instrumentation-library name used when the caller did // not supply a tracer via WithTracer. Matches the per-package convention // (see commons/rabbitmq/rabbitmq.go: otel.Tracer("rabbitmq")) so operators // can filter on this library in tracing backends. const tracerName = "streaming" +//nolint:unused // TODO: used by Emit() method once kafka producer is migrated // emitSpanName is the OTEL span name for each Emit invocation. Stable; a // rename would break downstream trace filters and should be coordinated // with TRD §7.2 + every dashboard that keys off this name. const emitSpanName = "streaming.emit" +//nolint:unused // TODO: called at Emit() span creation once kafka producer is migrated // setEmitSpanAttributes sets the TRD §7.2 attribute set on the streaming.emit // span. Called at span creation before any Execute branch runs so even error // paths carry the full diagnostic envelope. From ffce413ff04f10c76d4356145cdf73d78d3bf9d9 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 18:05:56 -0300 Subject: [PATCH 15/26] test: address CodeRabbit review on ported test suite Remove concrete error type pin in assert test. Widen 1-second time boundaries to 1-minute. Restore global OTel propagator in test helper. Strengthen no-span and external-client span assertions. Fix global state mutation in parallel test. Pass actual nil contexts in nil-ctx tests. Strengthen production-mode panic assertion. Make otel_test hermetic and remove network-dependent assertion. Fix vacuous tracestate check. X-Lerian-Ref: 0x1 --- CLAUDE.md | 146 ++++++----------------------- assert/assert_test.go | 2 +- assert/predicates_test.go | 4 +- middleware/telemetry_route_test.go | 2 +- middleware/telemetry_test.go | 43 +++++---- runtime/goroutine_test.go | 3 +- runtime/recover_test.go | 13 +-- runtime/tracing_test.go | 8 +- tracing/otel_test.go | 7 +- 9 files changed, 74 insertions(+), 154 deletions(-) diff --git a/CLAUDE.md b/CLAUDE.md index 1169c91..f5197de 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -1,121 +1,47 @@ -# lib-observability — Claude Code Project Context +# lib-observability — Project Conventions for Claude ## What this repo is -`github.com/LerianStudio/lib-observability` — new standalone Go library extracting observability/telemetry from `lib-commons` (`../lib-commons`). Flat package layout at module root (no `pkg/` stutter). Go 1.25.9. +`github.com/LerianStudio/lib-observability` — standalone Go library for observability/telemetry, +extracted from `lib-commons` (`../lib-commons`). Go 1.25.9. -## Architecture decisions (final, non-negotiable) +## Architecture decisions (non-negotiable) -| Decision | Choice | Rationale | +| Decision | Choice | Why | |---|---|---| -| Package naming | `tracing/` → `package tracing` | Dir/pkg mismatch is a papercut that compounds | -| Context carriers | Root `package observability` (`observability.go`) | Only observability helpers; `tracing/`, `log/`, `metrics/` consume it | -| Sensitive fields | `redaction/` package | Named by purpose, not scope; `IsSensitiveField(name string, extra ...string) bool` variadic | -| HTTP middleware | `middleware/` package | Separate from core tracing primitives | -| Streaming telemetry | `streaming/` package | Pure telemetry — no franz-go/kafka dep needed | +| Package layout | Flat at module root — no `pkg/` or `observability/` parent | Avoids `lib-X/X/` import stutter; idiomatic Go | +| `tracing/` package name | `package tracing` (not `package opentelemetry`) | Dir must match pkg name | +| Context carriers | Root `package observability` (`observability.go`) | Shared by all packages; not a tracing concern | +| Sensitive fields | `redaction/` package | Named by purpose; `IsSensitiveField(name string, extra ...string) bool` variadic | +| HTTP middleware | `middleware/` package | Separate from core tracing | +| Streaming telemetry | `streaming/` package | Pure OTEL — no franz-go/kafka dep | +| lib-commons dependency | **NEVER import lib-commons** | lib-commons will depend on lib-observability — circular | -## Current repo state (as of last session) +## Source of truth for migration -### Branch: `feat/migrate-from-lib-commons` (open PR #2 on GitHub) +When porting from lib-commons, source is always `../lib-commons/commons/`. +Import remapping: `github.com/LerianStudio/lib-commons/v5/commons/X` → `github.com/LerianStudio/lib-observability/X` -**Already merged to develop (PR #1):** bootstrap — CI/CD, go.mod, Makefile, scaffold dirs - -**In PR #2 — already committed:** -- `constants/` — OTEL attrs, metric names, event names, headers, obfuscation -- `redaction/` — `IsSensitiveField`, `DefaultSensitiveFields` (variadic extension) -- `observability.go` + `system.go` — context carriers + CPU/mem helpers (root package) -- `log/` — Logger interface, GoLogger (CWE-117), NopLogger, sanitizer -- `metrics/` — MetricsFactory, fluent Counter/Gauge/Histogram builders, domain recorders -- `runtime/` — panic recovery, PanicMetrics, SafeGo, ErrorReporter -- `assert/` — Asserter, AssertionMetrics, financial predicates -- `tracing/` — OpenTelemetry SDK bootstrap, span helpers, propagation, redaction engine (renamed from `package opentelemetry`) -- `zap/` — zap adapter with OTEL bridge, trace_id/span_id injection - -**lib-commons circular dep:** fully removed — `tracing/otel.go` uses self-contained `isStrictEnvironment()` instead of `commons.EffectiveSecurityTier`. - -## What still needs to be done (in PR #2 — session was interrupted here) - -### 1. Apply CodeRabbit fixes (7 valid issues) - -| File | Fix | -|---|---| -| `constants/headers.go:9` | `HeaderTraceparent="traceparent"` (lowercase W3C); `HeaderTraceparentPascal="Traceparent"` (keep distinct) — currently both are `"Traceparent"` (duplicate bug) | -| `zap/zap.go:193` | `Debug/Info/Warn/Error` bypass `sanitizeConsoleMsg` — CWE-117 gap; route through sanitizer | -| `assert/predicates.go:345` | `TransactionHasOperations([" "])` returns true — add blank-after-trim check | -| `tracing/obfuscation.go:136` | `fieldRegex==nil` falls back to `IsSensitiveField` instead of "match any" — logic bug | -| `tracing/obfuscation.go:191` | HMAC fallback uses plain SHA256 — use deterministic HMAC fallback key for consistency | -| `tracing/otel.go:536` | `sanitizeSpanMessage` only redacts first Bearer/Basic token — loop to redact all | -| `zap/injector.go:45` | `strings.TrimSpace(OTelLibraryName)==""` validation — whitespace passes currently | - -### 2. Migrate HTTP/gRPC middleware → `middleware/` package - -Source: `../lib-commons/commons/net/http/` -Files to port: -- `withTelemetry.go` → `middleware/telemetry.go` (`TelemetryMiddleware`, gRPC unary interceptor) -- `withTelemetry_helpers.go` → `middleware/helpers.go` (URL sanitization, route exclusion, `resolveGRPCRequestID`) -- `withTelemetry_metrics.go` → `middleware/metrics.go` (background system metrics collector) -- `context_span.go` → `middleware/context_span.go` (`SetHandlerSpanAttributes`, `SetTenantSpanAttribute`) - -Import remapping: `commons/opentelemetry` → `github.com/LerianStudio/lib-observability/tracing`, etc. -Package: `package middleware` -Fiber dep already in go.mod. - -### 3. Migrate streaming telemetry → `streaming/` package - -Source: `../lib-commons/commons/streaming/` -Files to port (telemetry only — NO franz-go dependency): -- `emit_span.go` → `streaming/emit_span.go` -- `metrics.go` → `streaming/metrics.go` -- `metrics_recorders.go` → `streaming/metrics_recorders.go` - -These only import `log` and `metrics` (OTEL) — clean extraction. -Package: `package streaming` - -### 4. Port test files from lib-commons - -Source files → target: -- `../lib-commons/commons/opentelemetry/*_test.go` (7 files) → `tracing/` -- `../lib-commons/commons/log/*_test.go` (3 files) → `log/` -- `../lib-commons/commons/zap/*_test.go` (2 files) → `zap/` -- `../lib-commons/commons/runtime/*_test.go` (7 files) → `runtime/` -- `../lib-commons/commons/assert/*_test.go` (4 files) → `assert/` -- `../lib-commons/commons/net/http/withTelemetry*_test.go` (2 files) → `middleware/` - -Import remapping in all test files: `lib-commons/v5/commons/X` → `lib-observability/X` - -### 5. Generate `log/log_mock.go` - -The `//go:generate` directive points to a non-existent generated file. Run: -```bash -go install go.uber.org/mock/mockgen@latest -cd /home/gbrecci/Documents/dev/projects/lerianstudio/lib-observability -mockgen --destination=log/log_mock.go --package=log github.com/LerianStudio/lib-observability/log Logger -``` - -### 6. After all above: validate +## Commit convention ```bash -go build ./... -go vet ./... -go test -tags=unit ./... -go mod tidy +git commit -S -m "type(scope): message" --trailer "X-Lerian-Ref: 0x1" ``` -## PR #2 context +- Always GPG-sign (`-S`) +- Always include trailer +- Conventional commits (feat, fix, chore, docs, refactor, test) +- Use `/ring:commit` skill for smart atomic grouping -- URL: https://github.com/LerianStudio/lib-observability/pull/2 -- Reviewer comments: CodeRabbit (technical) + Gandalf (strategic, score 7/10) -- Gandalf's score path: 7→8 (declare phases) → 9 (middleware+streaming+tests) → 10 (docs+CI coverage) -- User decision: do it all in this PR — no phases, complete migration +## How to call Gandalf (Lerian AI — Tailscale only) -## How to call Gandalf (Lerian AI team member) +Use for: Lerian environment context, team architecture decisions, Midaz service conventions. ```bash RESP=$(curl -s -X POST http://gandalf.heron-justitia.ts.net:18792/task \ -H "Content-Type: application/json" \ - -d '{"action":"ask","message":"YOUR QUESTION HERE","context":"lib-observability migration from lib-commons"}') + -d '{"action":"ask","message":"YOUR QUESTION","context":"lib-observability"}') TASK_ID=$(echo $RESP | jq -r .task_id) -# Poll: for i in $(seq 1 60); do RESULT=$(curl -s http://gandalf.heron-justitia.ts.net:18792/task/$TASK_ID) STATUS=$(echo $RESULT | jq -r .status) @@ -124,23 +50,9 @@ for i in $(seq 1 60); do done ``` -Use Gandalf for: Lerian environment context, team decisions, architecture choices specific to Midaz services. -Ask the user directly for: scope decisions, priority changes, anything Gandalf can't answer clearly. +## CI/CD notes -## Key file references - -| What | Path | -|---|---| -| Source lib | `../lib-commons/commons/` | -| HTTP middleware source | `../lib-commons/commons/net/http/` | -| Streaming telemetry source | `../lib-commons/commons/streaming/{emit_span,metrics,metrics_recorders}.go` | -| Test files source | Per package above | -| PR #2 | https://github.com/LerianStudio/lib-observability/pull/2 | - -## Commit convention - -```bash -git commit -S -m "feat(scope): message" --trailer "X-Lerian-Ref: 0x1" -``` -Always sign (`-S`), always include trailer. Conventional commits. -Use `/ring:commit` skill for smart grouping. +- Lint: `golangci-lint run ./...` (config in `.golangci.yml`) +- Tests: `go test -tags=unit ./...` (integration tests require Docker) +- Mocks: generated with `mockgen`, committed alongside source +- Release: semantic-release on push to `develop` (beta) / `main` (stable) diff --git a/assert/assert_test.go b/assert/assert_test.go index 5b568ea..f6af13c 100644 --- a/assert/assert_test.go +++ b/assert/assert_test.go @@ -232,7 +232,7 @@ func TestNoError_MessageContainsError(t *testing.T) { require.Contains(t, msg, "assertion failed:") require.Contains(t, msg, "operation failed") require.Contains(t, msg, "error=specific test error") - require.Contains(t, msg, "error_type=*errors.errorString") + require.Contains(t, msg, "error_type=") require.Contains(t, msg, "context_key=context_value") } diff --git a/assert/predicates_test.go b/assert/predicates_test.go index 7ae5219..175001e 100644 --- a/assert/predicates_test.go +++ b/assert/predicates_test.go @@ -206,8 +206,8 @@ func TestDateNotInFuture(t *testing.T) { }{ {"past date valid", now.Add(-24 * time.Hour), true}, {"recent past valid", now.Add(-time.Second), true}, - {"one second ago valid", now.Add(-time.Second), true}, - {"one second future invalid", now.Add(time.Second), false}, + {"one minute ago valid", now.Add(-time.Minute), true}, + {"one minute future invalid", now.Add(time.Minute), false}, {"one hour future invalid", now.Add(time.Hour), false}, {"far future invalid", now.Add(365 * 24 * time.Hour), false}, {"zero time valid", time.Time{}, true}, diff --git a/middleware/telemetry_route_test.go b/middleware/telemetry_route_test.go index 0af8c50..74cf44c 100644 --- a/middleware/telemetry_route_test.go +++ b/middleware/telemetry_route_test.go @@ -18,7 +18,7 @@ import ( func TestWithTelemetry_UnmatchedRouteDoesNotPanic(t *testing.T) { t.Parallel() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(context.Background()) }() oldTP := otel.GetTracerProvider() diff --git a/middleware/telemetry_test.go b/middleware/telemetry_test.go index 82937f1..991f6ac 100644 --- a/middleware/telemetry_test.go +++ b/middleware/telemetry_test.go @@ -28,13 +28,19 @@ import ( ) // setupTestTracer sets up a test tracer provider and returns it along with a span recorder. -func setupTestTracer() (*sdktrace.TracerProvider, *tracetest.SpanRecorder) { +func setupTestTracer(t *testing.T) (*sdktrace.TracerProvider, *tracetest.SpanRecorder) { + t.Helper() + spanRecorder := tracetest.NewSpanRecorder() tracerProvider := sdktrace.NewTracerProvider( sdktrace.WithSpanProcessor(spanRecorder), ) + oldPropagator := otel.GetTextMapPropagator() otel.SetTextMapPropagator(propagation.TraceContext{}) + t.Cleanup(func() { + otel.SetTextMapPropagator(oldPropagator) + }) return tracerProvider, spanRecorder } @@ -109,7 +115,7 @@ func TestWithTelemetry(t *testing.T) { t.Run(tt.name, func(t *testing.T) { ctx := context.Background() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(ctx) }() @@ -181,9 +187,7 @@ func TestWithTelemetry(t *testing.T) { } assert.True(t, spanFound, "Expected span with name %s not found", tt.method+" "+expectedPath) } else if tt.swaggerPath || tt.nilTelemetry { - for _, span := range spans { - assert.NotEqual(t, tt.method+" "+tt.path, span.Name(), "Should not have created a span for swagger path or nil telemetry") - } + assert.Empty(t, spans, "Expected no spans for swagger path or nil telemetry") } }) } @@ -239,7 +243,7 @@ func TestWithTelemetryExcludedRoutes(t *testing.T) { t.Run(tt.name, func(t *testing.T) { ctx := context.Background() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(ctx) }() @@ -289,10 +293,7 @@ func TestWithTelemetryExcludedRoutes(t *testing.T) { } assert.True(t, spanFound, "Expected span with name %s not found", expectedSpanName) } else { - expectedSpanName := tt.method + " " + replaceUUIDWithPlaceholder(tt.path) - for _, span := range spans { - assert.NotEqual(t, expectedSpanName, span.Name(), "Should not have created a span for excluded route") - } + assert.Empty(t, spans, "Expected no spans for excluded routes") } }) } @@ -417,7 +418,7 @@ func TestEndTracingSpans_CallsNextWithoutInitialContext(t *testing.T) { func TestEndTracingSpans_EndsFinalContextSpan(t *testing.T) { t.Parallel() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(context.Background()) }() app := fiber.New() @@ -560,7 +561,7 @@ func TestStopMetricsCollector_AllowsRestart(t *testing.T) { func TestExtractHTTPContext(t *testing.T) { ctx := context.Background() - tp, _ := setupTestTracer() + tp, _ := setupTestTracer(t) defer func() { _ = tp.Shutdown(ctx) }() @@ -643,7 +644,7 @@ func TestWithTelemetryConditionalTracePropagation(t *testing.T) { t.Run(tt.name, func(t *testing.T) { ctx := context.Background() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(ctx) }() @@ -694,10 +695,9 @@ func TestWithTelemetryConditionalTracePropagation(t *testing.T) { assert.Equal(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), "Trace ID should match the traceparent header for internal services") } else { - if capturedSpanContext.IsValid() { - assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), - "Trace ID should be different from traceparent header for external services") - } + require.True(t, capturedSpanContext.IsValid(), "Expected middleware to attach a valid span context") + assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should be different from traceparent header for external services") } }) } @@ -842,7 +842,7 @@ func TestWithTelemetryInterceptorConditionalTracePropagation(t *testing.T) { t.Run(tt.name, func(t *testing.T) { ctx := context.Background() - tp, spanRecorder := setupTestTracer() + tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(ctx) }() @@ -892,10 +892,9 @@ func TestWithTelemetryInterceptorConditionalTracePropagation(t *testing.T) { assert.Equal(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), "Trace ID should match the traceparent for internal gRPC services") } else { - if capturedSpanContext.IsValid() { - assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), - "Trace ID should be different from traceparent for external services") - } + require.True(t, capturedSpanContext.IsValid(), "Expected middleware to attach a valid span context") + assert.NotEqual(t, "4bf92f3577b34da6a3ce929d0e0e4736", capturedSpanContext.TraceID().String(), + "Trace ID should be different from traceparent for external services") } }) } diff --git a/runtime/goroutine_test.go b/runtime/goroutine_test.go index ce7309b..8070c37 100644 --- a/runtime/goroutine_test.go +++ b/runtime/goroutine_test.go @@ -384,11 +384,12 @@ func TestPanicMetrics_NilFactory(t *testing.T) { // TestErrorReporter_NilReporter tests that nil reporter doesn't cause panic. func TestErrorReporter_NilReporter(t *testing.T) { - t.Parallel() + //nolint:paralleltest // modifies global errorReporterInstance ctx := context.Background() SetErrorReporter(nil) + t.Cleanup(func() { SetErrorReporter(nil) }) reportPanicToErrorService(ctx, "test panic", nil, "test", "test") diff --git a/runtime/recover_test.go b/runtime/recover_test.go index d4d5e40..b02a446 100644 --- a/runtime/recover_test.go +++ b/runtime/recover_test.go @@ -140,9 +140,11 @@ func TestRecoverWithPolicyAndContext_NilCtx(t *testing.T) { logger := newTestLogger() + var nilCtx context.Context + require.NotPanics(t, func() { func() { - defer RecoverWithPolicyAndContext(context.Background(), logger, "test", "test", KeepRunning) + defer RecoverWithPolicyAndContext(nilCtx, logger, "test", "test", KeepRunning) panic("test") }() }) @@ -175,12 +177,11 @@ func TestToPanicError_ErrorValue(t *testing.T) { t.Parallel() // Test via production mode - production mode returns error type, not message - err := toPanicError(errOriginalPanicRecover, false) - require.NotNil(t, err) - assert.Contains(t, err.Error(), errOriginalPanicRecover.Error()) + errNonProd := toPanicError(errOriginalPanicRecover, false) + require.NotNil(t, errNonProd) + assert.Contains(t, errNonProd.Error(), errOriginalPanicRecover.Error()) errProd := toPanicError(errOriginalPanicRecover, true) require.NotNil(t, errProd) - // In production mode, error message is sanitized - assert.NotNil(t, errProd) + assert.NotEqual(t, errNonProd.Error(), errProd.Error(), "production mode should sanitize panic details") } diff --git a/runtime/tracing_test.go b/runtime/tracing_test.go index 451349c..66d2d08 100644 --- a/runtime/tracing_test.go +++ b/runtime/tracing_test.go @@ -325,17 +325,21 @@ func TestRecordPanicToSpan_NonRecordingSpan(t *testing.T) { func TestRecordPanicToSpan_NilContext(t *testing.T) { t.Parallel() + var nilCtx context.Context + require.NotPanics(t, func() { - RecordPanicToSpan(context.TODO(), "panic value", []byte("stack"), "goroutine") + RecordPanicToSpan(nilCtx, "panic value", []byte("stack"), "goroutine") }) } func TestRecordPanicToSpanWithComponent_NilContext(t *testing.T) { t.Parallel() + var nilCtx context.Context + require.NotPanics(t, func() { RecordPanicToSpanWithComponent( - context.TODO(), + nilCtx, "panic value", []byte("stack"), "component", diff --git a/tracing/otel_test.go b/tracing/otel_test.go index 78dc733..4934cd1 100644 --- a/tracing/otel_test.go +++ b/tracing/otel_test.go @@ -176,7 +176,8 @@ func TestNewTelemetry_DeploymentEnvControlsSecurityPolicy(t *testing.T) { require.NoError(t, err) require.NotNil(t, tl) require.NotNil(t, tl.shutdownCtx) - require.Error(t, tl.ShutdownTelemetryWithContext(context.Background())) + // Avoid network-coupled expectations in unit tests. + _ = tl.ShutdownTelemetryWithContext(context.Background()) }) } @@ -320,6 +321,8 @@ func TestNormalizeEndpointEnvVars(t *testing.T) { t.Run(tt.name+"/"+key, func(t *testing.T) { if tt.set { t.Setenv(key, tt.value) + } else { + t.Setenv(key, "") } normalizeEndpointEnvVars() @@ -652,7 +655,7 @@ func TestGetTraceStateFromContext_WithSpan(t *testing.T) { defer span.End() state := GetTraceStateFromContext(ctx) - assert.NotNil(t, state) + assert.Empty(t, state, "fresh local span context should have empty tracestate") } // =========================================================================== From 10646b0d779e1cd4832f47e602ad3a3f0e3155f2 Mon Sep 17 00:00:00 2001 From: Brecci Date: Fri, 8 May 2026 19:43:44 -0300 Subject: [PATCH 16/26] feat(streaming): remove streaming package from lib-observability Streaming telemetry (emit_span, metrics, metrics_recorders) belongs in lib-commons alongside Producer.Emit(), not here. lib-observability provides general-purpose OTEL primitives (tracing, metrics, log, middleware). lib-commons will import lib-observability and build kafka-specific instrumentation on top of those primitives. X-Lerian-Ref: 0x1 --- streaming/emit_span.go | 71 ------ streaming/metrics.go | 139 ------------ streaming/metrics_recorders.go | 394 --------------------------------- streaming/streaming.go | 95 -------- 4 files changed, 699 deletions(-) delete mode 100644 streaming/emit_span.go delete mode 100644 streaming/metrics.go delete mode 100644 streaming/metrics_recorders.go delete mode 100644 streaming/streaming.go diff --git a/streaming/emit_span.go b/streaming/emit_span.go deleted file mode 100644 index b00fde4..0000000 --- a/streaming/emit_span.go +++ /dev/null @@ -1,71 +0,0 @@ -package streaming - -import ( - "go.opentelemetry.io/otel/attribute" - "go.opentelemetry.io/otel/trace" - - "github.com/LerianStudio/lib-observability/log" -) - -//nolint:unused // TODO: used by Emit() method once kafka producer is migrated -// tracerName is the instrumentation-library name used when the caller did -// not supply a tracer via WithTracer. Matches the per-package convention -// (see commons/rabbitmq/rabbitmq.go: otel.Tracer("rabbitmq")) so operators -// can filter on this library in tracing backends. -const tracerName = "streaming" - -//nolint:unused // TODO: used by Emit() method once kafka producer is migrated -// emitSpanName is the OTEL span name for each Emit invocation. Stable; a -// rename would break downstream trace filters and should be coordinated -// with TRD §7.2 + every dashboard that keys off this name. -const emitSpanName = "streaming.emit" - -//nolint:unused // TODO: called at Emit() span creation once kafka producer is migrated -// setEmitSpanAttributes sets the TRD §7.2 attribute set on the streaming.emit -// span. Called at span creation before any Execute branch runs so even error -// paths carry the full diagnostic envelope. -// -// messaging.kafka.message.key is emitted only when the package logger has -// debug enabled — keeps partition keys out of high-volume trace stores -// unless explicitly opted in. -// -// tenant.id goes on the SPAN ONLY. Metrics never receive this label (DX-D02). -// This is load-bearing: the automated cardinality test asserts it. -// -// No ctx parameter: span attributes attach via the span's own context; the -// debug check consults the logger directly. A ctx argument here would be -// unused (flagged by linter). -// -// topic is threaded from Emit (already computed once per Emit) so we avoid -// recomputing event.Topic() per span attribute set. -func (p *Producer) setEmitSpanAttributes(span trace.Span, event Event, topic string) { - if !span.IsRecording() { - // Fast path for no-op spans: building the attribute slice is pure - // waste when the backend will drop them all. IsRecording is the - // sanctioned cheap-check entry point (TRD §7.2 note + otel docs). - return - } - - span.SetAttributes( - attribute.String("messaging.system", "kafka"), - attribute.String("messaging.destination.name", topic), - // "messaging.operation.type" (modern semconv) — NOT the deprecated - // "messaging.operation" key. If semconv v1.27 is imported later, - // replace the literal with semconv.MessagingOperationTypeKey. - attribute.String("messaging.operation.type", "send"), - attribute.String("messaging.client.id", p.cfg.ClientID), - attribute.String("event.resource_type", event.ResourceType), - attribute.String("event.event_type", event.EventType), - attribute.String("tenant.id", event.TenantID), - attribute.String("streaming.producer_id", p.producerID), - ) - - if p.logger.Enabled(log.LevelDebug) { - partKey := event.PartitionKey() - if p.partFn != nil { - partKey = p.partFn(event) - } - - span.SetAttributes(attribute.String("messaging.kafka.message.key", partKey)) - } -} diff --git a/streaming/metrics.go b/streaming/metrics.go deleted file mode 100644 index ffe8170..0000000 --- a/streaming/metrics.go +++ /dev/null @@ -1,139 +0,0 @@ -package streaming - -import ( - "context" - "sync" - "time" - - "github.com/LerianStudio/lib-observability/log" - "github.com/LerianStudio/lib-observability/metrics" -) - -// Outcome label values. The "outcome" label on streaming metrics is a closed -// enum per TRD §7.1. NEVER introduce a new value without a TRD amendment: -// downstream dashboards and SLO alerts key off this set. -// -// - outcomeProduced: direct publish succeeded (CLOSED circuit, broker healthy). -// - outcomeOutboxed: circuit OPEN but outbox fallback wrote the event durably. -// - outcomeCircuitOpen: circuit OPEN and no outbox → caller got ErrCircuitOpen. -// - outcomeCallerError: preflight rejection or caller-class EmitError. -// - outcomeDLQ: publish failed with an infra class; payload went to {topic}.dlq. -// - outcomeOutboxFailed: outbox fallback attempted but the outbox write -// itself failed — distinct from outcomeCallerError because the root -// cause is outbox infrastructure, not caller input. -const ( - outcomeProduced = "produced" - outcomeOutboxed = "outboxed" - outcomeCircuitOpen = "circuit_open" - outcomeCallerError = "caller_error" - outcomeDLQ = "dlq" - outcomeOutboxFailed = "outbox_failed" -) - -// Metric names. Kept colocated with the recorder so a TRD rename is a one-file -// edit. Names match TRD §7.1 verbatim — do not reword casually; they are the -// public contract for Grafana dashboards and alert rules. -const ( - metricNameEmitted = "streaming_emitted_total" - metricNameEmitDurationMS = "streaming_emit_duration_ms" - metricNameDLQTotal = "streaming_dlq_total" - metricNameDLQFailed = "streaming_dlq_publish_failed_total" - metricNameOutboxRouted = "streaming_outbox_routed_total" - metricNameCircuitState = "streaming_circuit_state" -) - -// streamingMetrics holds lazy-initialised OTEL instruments for the streaming -// package. Mirrors the pattern in commons/circuitbreaker/manager.go:85-103 -// but per-instrument-lazy (instead of one-shot init) so a nil factory logs -// once and subsequent callers pay zero cost beyond the sync.Once check. -// -// Nil-safety rules (every exported record* method enforces these): -// - nil receiver → no-op, no panic -// - nil factory → warn-once log, then no-op forever after -// - builder creation error → log at ERROR level, record is a no-op; we -// do NOT retry because a creation failure indicates a misconfigured -// meter that retries won't fix -// -// Concurrency: sync.Once protects each instrument's first build. Reads of -// the *Builder pointer after the Once runs are safe because sync.Once -// establishes happens-before for the write. -// -// Per-instrument record methods live in metrics_recorders.go — split from -// this file to keep both under the 300-line cap. -type streamingMetrics struct { - // factory is the user-supplied metrics factory. MAY be nil — see warnOnce. - factory *metrics.MetricsFactory - - // logger is never nil — newStreamingMetrics substitutes log.NewNop() when - // the caller passes nil, mirroring the broader package convention. - logger log.Logger - - // Instrument builders + their once-guards. A separate Once per instrument - // keeps build failures isolated: if histogram creation fails, counters - // still work. - emittedOnce sync.Once - emittedCounter *metrics.CounterBuilder - emittedCache labelSetCache // topic+operation+outcome → labeled builder - - emitDurationOnce sync.Once - emitDurationHistogram *metrics.HistogramBuilder - emitDurationCache labelSetCache // topic+outcome → labeled builder - - dlqOnce sync.Once - dlqCounter *metrics.CounterBuilder - dlqCache labelSetCache // topic+error_class → labeled builder - - dlqFailedOnce sync.Once - dlqFailedCounter *metrics.CounterBuilder - dlqFailedCache labelSetCache // topic → labeled builder - - outboxRoutedOnce sync.Once - outboxRoutedCounter *metrics.CounterBuilder - outboxRoutedCache labelSetCache // topic+reason → labeled builder - - circuitStateOnce sync.Once - circuitStateGauge *metrics.GaugeBuilder - - // warnOnce guards the single "metrics disabled" WARN the Producer emits - // when factory == nil at first-record time. Subsequent calls are silent. - warnOnce sync.Once -} - -// newStreamingMetrics constructs a streamingMetrics whose behaviour is -// determined by factory: -// -// - factory != nil → real recording; instruments build lazily on first touch. -// - factory == nil → all record* methods are no-ops after a single WARN log. -// -// logger is substituted with log.NewNop() when nil so record* methods can -// unconditionally call logger.Log without guarding. -func newStreamingMetrics(factory *metrics.MetricsFactory, logger log.Logger) *streamingMetrics { - if logger == nil { - logger = log.NewNop() - } - - return &streamingMetrics{ - factory: factory, - logger: logger, - } -} - -// warnNilFactoryOnce emits a single WARN log when the metrics factory is nil. -// Subsequent calls are silent. The guard lives inside sync.Once so repeated -// nil-factory record* calls don't spam logs. -func (m *streamingMetrics) warnNilFactoryOnce(ctx context.Context) { - if m == nil { - return - } - - m.warnOnce.Do(func() { - m.logger.Log(ctx, log.LevelWarn, - "streaming: metrics factory is nil; metrics are disabled") - }) -} - -// durationMilliseconds converts a time.Duration to int64 milliseconds. A -// named helper so the units are obvious at call sites. -func durationMilliseconds(d time.Duration) int64 { - return d.Milliseconds() -} diff --git a/streaming/metrics_recorders.go b/streaming/metrics_recorders.go deleted file mode 100644 index 0e371bf..0000000 --- a/streaming/metrics_recorders.go +++ /dev/null @@ -1,394 +0,0 @@ -package streaming - -import ( - "context" - "sync" - - "github.com/LerianStudio/lib-observability/log" - "github.com/LerianStudio/lib-observability/metrics" -) - -// This file holds the six record* methods that write to the OTEL -// instruments. Split from metrics.go so neither file crosses the 300-line -// cap and so the ceremonial-but-verbose lazy-init pattern is easy to skim -// top-down. -// -// Per-label-set builder caching (T6.1 hardening): the *Builder values -// returned by (*MetricsFactory).Counter/Histogram/Gauge cache the -// underlying OTEL instruments, but WithLabels/WithAttributes allocate a -// fresh builder on every call. On a 10k-RPS service that produces ~40k -// small heap objects per second. We cache a per-labelset builder keyed -// by a stable string (strings are hashable; attribute-set keys would -// require manual fingerprinting), reusing it across record calls. -// Topic + outcome cardinality is bounded per-process, so the cache is -// bounded too. - -// labelSetCache is a concurrency-safe map of stable-key → *Builder. The -// concrete builder type is captured as `any` so the same cache shape -// fits counters, histograms, and gauges without generics bleed-through. -type labelSetCache struct { - // m is keyed by a composed string. Value is one of: - // *metrics.CounterBuilder, *metrics.HistogramBuilder, *metrics.GaugeBuilder - // depending on which record* populated it. - m sync.Map -} - -// recordEmitted increments streaming_emitted_total by 1 with the given -// topic/operation/outcome label set. No-op when m is nil or factory is nil -// (latter also emits a WARN once). -func (m *streamingMetrics) recordEmitted(ctx context.Context, topic, operation, outcome string) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.emittedOnce.Do(func() { - builder, err := m.factory.Counter(metrics.Metric{ - Name: metricNameEmitted, - Unit: "1", - Description: "Total streaming emits by topic, operation, and outcome.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create emitted counter", - log.String("metric", metricNameEmitted), log.Err(err)) - - return - } - - m.emittedCounter = builder - }) - - if m.emittedCounter == nil { - return - } - - // Cache the labeled builder keyed by (topic, operation, outcome). The - // hot path re-uses a single *CounterBuilder per tuple instead of - // allocating one via WithLabels on every Add. - key := topic + "\x00" + operation + "\x00" + outcome - - builder := m.getOrBuildCounter(&m.emittedCache, key, m.emittedCounter, map[string]string{ - "topic": topic, - "operation": operation, - "outcome": outcome, - }) - if builder == nil { - return - } - - if err := builder.Add(ctx, 1); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record emitted", - log.String("metric", metricNameEmitted), log.Err(err)) - } -} - -// recordEmitDuration adds a sample to streaming_emit_duration_ms. The unit is -// milliseconds to match the TRD name; callers pass time.Since(start).Milliseconds(). -func (m *streamingMetrics) recordEmitDuration(ctx context.Context, topic, outcome string, durationMs int64) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.emitDurationOnce.Do(func() { - builder, err := m.factory.Histogram(metrics.Metric{ - Name: metricNameEmitDurationMS, - Unit: "ms", - Description: "Streaming emit duration in milliseconds by topic and outcome.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create duration histogram", - log.String("metric", metricNameEmitDurationMS), log.Err(err)) - - return - } - - m.emitDurationHistogram = builder - }) - - if m.emitDurationHistogram == nil { - return - } - - key := topic + "\x00" + outcome - - builder := m.getOrBuildHistogram(&m.emitDurationCache, key, m.emitDurationHistogram, map[string]string{ - "topic": topic, - "outcome": outcome, - }) - if builder == nil { - return - } - - if err := builder.Record(ctx, durationMs); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record duration", - log.String("metric", metricNameEmitDurationMS), log.Err(err)) - } -} - -// recordDLQ increments streaming_dlq_total by 1. Called after a successful -// DLQ publish; the error_class label encodes which of the 8 ErrorClass values -// caused the quarantine. -func (m *streamingMetrics) recordDLQ(ctx context.Context, topic, errorClass string) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.dlqOnce.Do(func() { - builder, err := m.factory.Counter(metrics.Metric{ - Name: metricNameDLQTotal, - Unit: "1", - Description: "Total events quarantined to the per-topic DLQ.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create dlq counter", - log.String("metric", metricNameDLQTotal), log.Err(err)) - - return - } - - m.dlqCounter = builder - }) - - if m.dlqCounter == nil { - return - } - - key := topic + "\x00" + errorClass - - builder := m.getOrBuildCounter(&m.dlqCache, key, m.dlqCounter, map[string]string{ - "topic": topic, - "error_class": errorClass, - }) - if builder == nil { - return - } - - if err := builder.Add(ctx, 1); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record dlq", - log.String("metric", metricNameDLQTotal), log.Err(err)) - } -} - -// recordDLQFailed increments streaming_dlq_publish_failed_total by 1. Called -// when the DLQ publish itself fails — the alerting signal operators watch -// because a failing DLQ means correlated broker failure across both source -// and DLQ topics. -func (m *streamingMetrics) recordDLQFailed(ctx context.Context, topic string) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.dlqFailedOnce.Do(func() { - builder, err := m.factory.Counter(metrics.Metric{ - Name: metricNameDLQFailed, - Unit: "1", - Description: "Total DLQ publish attempts that failed themselves.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create dlq_failed counter", - log.String("metric", metricNameDLQFailed), log.Err(err)) - - return - } - - m.dlqFailedCounter = builder - }) - - if m.dlqFailedCounter == nil { - return - } - - builder := m.getOrBuildCounter(&m.dlqFailedCache, topic, m.dlqFailedCounter, map[string]string{ - "topic": topic, - }) - if builder == nil { - return - } - - if err := builder.Add(ctx, 1); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record dlq_failed", - log.String("metric", metricNameDLQFailed), log.Err(err)) - } -} - -// recordOutboxRouted increments streaming_outbox_routed_total by 1. Called -// when a publish falls back to the outbox. reason is a closed set: -// "circuit_open" (the only T6 caller) or "broker_error" (reserved for v1.1). -func (m *streamingMetrics) recordOutboxRouted(ctx context.Context, topic, reason string) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.outboxRoutedOnce.Do(func() { - builder, err := m.factory.Counter(metrics.Metric{ - Name: metricNameOutboxRouted, - Unit: "1", - Description: "Total events routed to the outbox fallback by topic and reason.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create outbox_routed counter", - log.String("metric", metricNameOutboxRouted), log.Err(err)) - - return - } - - m.outboxRoutedCounter = builder - }) - - if m.outboxRoutedCounter == nil { - return - } - - key := topic + "\x00" + reason - - builder := m.getOrBuildCounter(&m.outboxRoutedCache, key, m.outboxRoutedCounter, map[string]string{ - "topic": topic, - "reason": reason, - }) - if builder == nil { - return - } - - if err := builder.Add(ctx, 1); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record outbox_routed", - log.String("metric", metricNameOutboxRouted), log.Err(err)) - } -} - -// recordCircuitState sets the streaming_circuit_state gauge. state is one of -// flagCBClosed / flagCBHalfOpen / flagCBOpen (0/1/2). The instrument has no -// labels — a single gauge per-process is sufficient. -// -// TRD §7.1 labels this "Int64UpDownCounter (gauge-like)". The underlying -// metrics factory only exposes Int64Gauge; semantically equivalent (both -// emit the current value, not a delta). -func (m *streamingMetrics) recordCircuitState(ctx context.Context, state int32) { - if m == nil { - return - } - - if m.factory == nil { - m.warnNilFactoryOnce(ctx) - - return - } - - m.circuitStateOnce.Do(func() { - builder, err := m.factory.Gauge(metrics.Metric{ - Name: metricNameCircuitState, - Unit: "1", - Description: "Circuit breaker state: 0=closed, 1=half-open, 2=open.", - }) - if err != nil { - m.logger.Log(ctx, log.LevelError, "streaming: metrics: create circuit_state gauge", - log.String("metric", metricNameCircuitState), log.Err(err)) - - return - } - - m.circuitStateGauge = builder - }) - - if m.circuitStateGauge == nil { - return - } - - // circuit_state has no labels, so there is nothing to cache; the - // labeled builder would be identical to the base builder. - if err := m.circuitStateGauge.Set(ctx, int64(state)); err != nil { - m.logger.Log(ctx, log.LevelWarn, "streaming: metrics: record circuit_state", - log.String("metric", metricNameCircuitState), log.Err(err)) - } -} - -// getOrBuildCounter returns a *CounterBuilder for the given labelset, -// caching it in cache keyed by key. First-hit path builds a new builder -// via WithLabels; subsequent hits reuse the same builder pointer. Returns -// nil if WithLabels returned a nil builder (shouldn't happen in practice). -func (m *streamingMetrics) getOrBuildCounter( - cache *labelSetCache, - key string, - base *metrics.CounterBuilder, - labels map[string]string, -) *metrics.CounterBuilder { - if cache == nil { - return nil - } - - if v, ok := cache.m.Load(key); ok { - if builder, ok := v.(*metrics.CounterBuilder); ok { - return builder - } - } - - built := base.WithLabels(labels) - if built == nil { - return nil - } - - actual, _ := cache.m.LoadOrStore(key, built) - if builder, ok := actual.(*metrics.CounterBuilder); ok { - return builder - } - - return built -} - -// getOrBuildHistogram mirrors getOrBuildCounter for histogram builders. -func (m *streamingMetrics) getOrBuildHistogram( - cache *labelSetCache, - key string, - base *metrics.HistogramBuilder, - labels map[string]string, -) *metrics.HistogramBuilder { - if cache == nil { - return nil - } - - if v, ok := cache.m.Load(key); ok { - if builder, ok := v.(*metrics.HistogramBuilder); ok { - return builder - } - } - - built := base.WithLabels(labels) - if built == nil { - return nil - } - - actual, _ := cache.m.LoadOrStore(key, built) - if builder, ok := actual.(*metrics.HistogramBuilder); ok { - return builder - } - - return built -} diff --git a/streaming/streaming.go b/streaming/streaming.go deleted file mode 100644 index b7f4d26..0000000 --- a/streaming/streaming.go +++ /dev/null @@ -1,95 +0,0 @@ -package streaming - -import ( - "encoding/json" - "time" - - "github.com/LerianStudio/lib-observability/log" - "github.com/LerianStudio/lib-observability/metrics" - "go.opentelemetry.io/otel/trace" -) - -// ProducerConfig holds the configuration values referenced by telemetry instrumentation. -// Only fields needed for span attributes and metrics are kept here; kafka-client -// configuration lives in the service that constructs the producer. -type ProducerConfig struct { - // ClientID is the Kafka client identifier recorded on streaming.emit spans. - ClientID string -} - -// Event is the CloudEvents-aligned envelope produced by a service method. -// Field names are spelled out and free of Kafka/AMQP vocabulary. -type Event struct { - TenantID string - ResourceType string - EventType string - EventID string - SchemaVersion string - Timestamp time.Time - Source string - - Subject string - DataContentType string - DataSchema string - - // SystemEvent marks this event as platform-level (not tenant-scoped). - SystemEvent bool - Payload json.RawMessage -} - -// Topic returns the derived Kafka topic name for this event. -// Base form: "lerian.streaming..". -func (e *Event) Topic() string { - if e == nil { - return "" - } - - return topicPrefix + e.ResourceType + "." + e.EventType -} - -const topicPrefix = "lerian.streaming." - -// PartitionKey returns the default Kafka partition key for this event. -func (e *Event) PartitionKey() string { - if e == nil { - return "" - } - - if e.SystemEvent { - return "system:" + e.EventType - } - - return e.TenantID -} - -// Producer holds the telemetry-relevant state for a streaming producer. -// It does NOT hold a kafka client — that lives in the service layer. -type Producer struct { - cfg ProducerConfig - producerID string - logger log.Logger - tracer trace.Tracer - partFn func(Event) string - metrics *streamingMetrics -} - -// NewProducer constructs a Producer with the given telemetry configuration. -// factory may be nil — in that case metrics are disabled and a single WARN is logged. -func NewProducer(cfg ProducerConfig, producerID string, logger log.Logger, tracer trace.Tracer, factory *metrics.MetricsFactory) *Producer { - if logger == nil { - logger = log.NewNop() - } - - return &Producer{ - cfg: cfg, - producerID: producerID, - logger: logger, - tracer: tracer, - metrics: newStreamingMetrics(factory, logger), - } -} - -// WithPartitionKey overrides the default partition key function for this producer. -func (p *Producer) WithPartitionKey(fn func(Event) string) { - p.partFn = fn -} From fa0c8df5ce67ac5b19b14e86fda0d0e6bc714f5e Mon Sep 17 00:00:00 2001 From: Lucas Bedatty Date: Wed, 13 May 2026 11:41:04 -0300 Subject: [PATCH 17/26] fix(ci): align workflows with shared workflows v1.28.12 boilerplate Replace bespoke CI with LerianStudio/github-actions-shared-workflows@v1.28.12, matching the go-boilerplate-ddd reference adapted for a pure Go library (no Dockerfile, no build artifact, no migrations). Workflows: - pr-validation: new, with library-aligned pr_title_scopes and source-branch enforcement. - pr-security-scan: new, enable_docker_scan=false (no Dockerfile in this repo). - go-combined-analysis: replace bespoke gosec/golangci-lint composition with shared go-pr-analysis. - release: replace bespoke semantic-release + backmerge job with shared release.yml. - routine: new, schedules labels-sync, stale-pr/issue, branch and workflow-run cleanup. Repo conventions: - labeler.yml: scopes mirror flat package layout (assert, log, metrics, middleware, redaction, runtime, tracing, zap, core, scripts, config, ci, docs, tests, deps). - labels.yml: full label catalogue (scopes + change types + size + triage + automation/backmerge). - dependabot.yml: gomod + github-actions only; weekly; develop target; groups preserved. - pull_request_template.md: adopt portfolio header/sections; add lib-commons import guard. X-Lerian-Ref: 0x1 --- .github/dependabot.yml | 42 ++++++ .github/labeler.yml | 99 ++++++++++++++ .github/labels.yml | 148 +++++++++++++++++++++ .github/pull_request_template.md | 86 ++++++++---- .github/workflows/go-combined-analysis.yml | 66 +++------ .github/workflows/pr-security-scan.yml | 24 ++++ .github/workflows/pr-validation.yml | 37 ++++++ .github/workflows/release.yml | 99 ++------------ .github/workflows/routine.yml | 43 ++++++ 9 files changed, 480 insertions(+), 164 deletions(-) create mode 100644 .github/labeler.yml create mode 100644 .github/labels.yml create mode 100644 .github/workflows/pr-security-scan.yml create mode 100644 .github/workflows/pr-validation.yml create mode 100644 .github/workflows/routine.yml diff --git a/.github/dependabot.yml b/.github/dependabot.yml index 8c358da..29a9431 100644 --- a/.github/dependabot.yml +++ b/.github/dependabot.yml @@ -1,7 +1,49 @@ version: 2 updates: + # Go modules - package-ecosystem: "gomod" directory: "/" schedule: interval: "weekly" + day: "monday" + time: "08:00" + timezone: "America/Sao_Paulo" target-branch: "develop" + open-pull-requests-limit: 10 + labels: + - "deps" + commit-message: + prefix: "chore" + include: "scope" + groups: + go-dependencies: + patterns: + - "*" + + # Pinned third-party GitHub Actions + - package-ecosystem: "github-actions" + directory: "/" + schedule: + interval: "weekly" + day: "monday" + timezone: "America/Sao_Paulo" + target-branch: "develop" + open-pull-requests-limit: 10 + labels: + - "deps" + - "ci" + commit-message: + prefix: "chore" + include: "scope" + ignore: + # LerianStudio internal actions are pinned intentionally + - dependency-name: "LerianStudio/*" + groups: + actions-core: + patterns: + - "actions/*" + security-actions: + patterns: + - "github/codeql-action*" + - "aquasecurity/trivy-action" + - "securego/gosec" diff --git a/.github/labeler.yml b/.github/labeler.yml new file mode 100644 index 0000000..24fd534 --- /dev/null +++ b/.github/labeler.yml @@ -0,0 +1,99 @@ +# Pull Request Labeler configuration +# +# Labels are aligned with the pr_title_scopes in pr-validation.yml. + +# Assertion helpers +assert: + - changed-files: + - any-glob-to-any-file: 'assert/**/*' + +# Shared constants +constants: + - changed-files: + - any-glob-to-any-file: 'constants/**/*' + +# Structured logging primitives +log: + - changed-files: + - any-glob-to-any-file: 'log/**/*' + +# Metrics instrumentation +metrics: + - changed-files: + - any-glob-to-any-file: 'metrics/**/*' + +# HTTP/gRPC observability middleware +middleware: + - changed-files: + - any-glob-to-any-file: 'middleware/**/*' + +# Log/data redaction utilities +redaction: + - changed-files: + - any-glob-to-any-file: 'redaction/**/*' + +# Runtime introspection +runtime: + - changed-files: + - any-glob-to-any-file: 'runtime/**/*' + +# Distributed tracing +tracing: + - changed-files: + - any-glob-to-any-file: 'tracing/**/*' + +# Zap logger integration +zap: + - changed-files: + - any-glob-to-any-file: 'zap/**/*' + +# Top-level public API (observability.go, system.go, context_helpers.go) +core: + - changed-files: + - any-glob-to-any-file: + - 'observability.go' + - 'system.go' + - 'context_helpers.go' + +# Build and tooling scripts +scripts: + - changed-files: + - any-glob-to-any-file: + - 'scripts/**/*' + - 'Makefile' + +# Application and tooling configuration +config: + - changed-files: + - any-glob-to-any-file: + - '.golangci.yml' + - '.releaserc.yml' + - '.goreleaser.yml' + - '.ignorecoverunit' + +# Continuous integration pipelines and shared workflows +ci: + - changed-files: + - any-glob-to-any-file: '.github/workflows/**/*' + +# Markdown docs and llms.txt context files +docs: + - changed-files: + - any-glob-to-any-file: + - '**/*.md' + - 'docs/**/*' + - 'llms.txt' + +# Unit, integration and end-to-end tests +tests: + - changed-files: + - any-glob-to-any-file: + - '**/*_test.go' + - 'tests/**/*' + +# Go module dependencies +deps: + - changed-files: + - any-glob-to-any-file: + - 'go.mod' + - 'go.sum' diff --git a/.github/labels.yml b/.github/labels.yml new file mode 100644 index 0000000..6567dba --- /dev/null +++ b/.github/labels.yml @@ -0,0 +1,148 @@ +# Label definitions for lib-observability +# Synced via .github/workflows/routine.yml -> shared labels-sync. + +# ── Scopes (aligned with .github/labeler.yml) ───────────────────────────────── + +- name: assert + color: "1d76db" + description: Assertion helpers + +- name: constants + color: "0e8a16" + description: Shared constants + +- name: log + color: "fbca04" + description: Structured logging primitives + +- name: metrics + color: "c5def5" + description: Metrics instrumentation + +- name: middleware + color: "5319e7" + description: HTTP/gRPC observability middleware + +- name: redaction + color: "7c3aed" + description: Log/data redaction utilities + +- name: runtime + color: "0052cc" + description: Runtime introspection + +- name: tracing + color: "f9d0c4" + description: Distributed tracing + +- name: zap + color: "bfd4f2" + description: Zap logger integration + +- name: core + color: "0db7ed" + description: Top-level public API surface + +- name: scripts + color: "fef2c0" + description: Build and tooling scripts + +- name: config + color: "d4a017" + description: Application and tooling configuration + +- name: ci + color: "2088FF" + description: Continuous integration pipelines + +- name: docs + color: "0075ca" + description: Documentation, llms.txt and markdown content + +- name: tests + color: "00ADD8" + description: Unit, integration and end-to-end tests + +- name: deps + color: "ededed" + description: Go module dependencies (usually opened by Dependabot) + +# ── Change types ────────────────────────────────────────────────────────────── + +- name: bug + color: "d73a4a" + description: Something is not working as expected + +- name: enhancement + color: "a2eeef" + description: New feature or improvement request + +- name: dependencies + color: "ededed" + description: Dependency updates (Dependabot) + +- name: github-actions + color: "2088FF" + description: Updates to GitHub Actions dependencies + +- name: breaking-change + color: "b60205" + description: Callers must update their integration after this change + +- name: skip-changelog + color: "ffffff" + description: This change does not need a changelog entry + +# ── PR size ─────────────────────────────────────────────────────────────────── + +- name: size/XS + color: "3CBF00" + description: "PR changes < 50 lines" + +- name: size/S + color: "5D9801" + description: "PR changes 50–199 lines" + +- name: size/M + color: "7F7203" + description: "PR changes 200–499 lines" + +- name: size/L + color: "A14C05" + description: "PR changes 500–999 lines" + +- name: size/XL + color: "C32607" + description: "PR changes ≥ 1000 lines — consider splitting" + +# ── Triage and stale management ─────────────────────────────────────────────── + +- name: triage + color: "e4e669" + description: Needs initial assessment + +- name: stale + color: "795548" + description: No recent activity — will be closed if not updated + +- name: no-stale + color: "fef2c0" + description: Exempt from stale auto-close + +- name: work-in-progress + color: "ffa500" + description: Active work — exempt from stale auto-close + +- name: pinned + color: "d4a017" + description: Pinned discussion/tracker — exempt from stale auto-close + +# ── Automation ──────────────────────────────────────────────────────────────── + +- name: automated + color: "ededed" + description: Opened by automation (release backmerges, etc.) + +- name: backmerge + color: "5319e7" + description: Backmerge PR (main → develop after release) diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md index 293946e..28f489f 100644 --- a/.github/pull_request_template.md +++ b/.github/pull_request_template.md @@ -1,27 +1,59 @@ -# Pull Request Checklist - -## Pull Request Type -[//]: # (Check the appropriate box for the type of pull request.) - -- [ ] Feature -- [ ] Fix -- [ ] Refactor -- [ ] Pipeline -- [ ] Tests -- [ ] Documentation - -## Checklist -Please check each item after it's completed. - -- [ ] I have tested these changes locally. -- [ ] I have updated the documentation accordingly. -- [ ] I have added necessary comments to the code, especially in complex areas. -- [ ] I have ensured that my changes adhere to the project's coding standards. -- [ ] I have checked for any potential security issues. -- [ ] I have ensured that all tests pass. -- [ ] I have updated the version appropriately (if applicable). -- [ ] I have confirmed this code is ready for review. - -## Additional Notes -[//]: # (Add any additional notes, context, or explanation that could be helpful for reviewers.) -## Obs: Please, always remember to target your PR to develop branch instead of main. + + + + + +
Lerian

Lib Observability

+ +--- + +## Description + + + +## Type of Change + +- [ ] `feat`: New feature or capability +- [ ] `fix`: Bug fix +- [ ] `perf`: Performance improvement +- [ ] `refactor`: Internal restructuring with no behavior change +- [ ] `docs`: Documentation only (README, docs/, inline comments) +- [ ] `style`: Formatting, whitespace, naming (no logic change) +- [ ] `test`: Adding or updating tests +- [ ] `ci`: CI pipeline or workflow changes +- [ ] `build`: Build system, Go module dependencies +- [ ] `chore`: Maintenance, config, tooling +- [ ] `revert`: Reverts a previous commit +- [ ] `BREAKING CHANGE`: Consumers must update their integration + +## Breaking Changes + + + +None. + +## Testing + +- [ ] `make test` passes +- [ ] `make test-int` passes if integration paths are exercised +- [ ] `make lint` passes +- [ ] Coverage threshold respected (see Go Combined Analysis) + +**Test evidence / Actions run:** + +## Architectural Checklist + +- [ ] No `panic()` in production paths — uses `assert` helpers or wrapped errors +- [ ] Timestamps use `time.Now().UTC()` +- [ ] Errors wrapped with `%w` +- [ ] Public API additions documented (godoc + README if user-facing) +- [ ] No leaking of context or goroutines (instrumentation must be safe under load) +- [ ] Backwards-compatible by default; breaking changes flagged above +- [ ] No `lib-commons` import (circular — see CLAUDE.md) + +## Related Issues + +Closes # diff --git a/.github/workflows/go-combined-analysis.yml b/.github/workflows/go-combined-analysis.yml index 3e95c5a..7d07081 100644 --- a/.github/workflows/go-combined-analysis.yml +++ b/.github/workflows/go-combined-analysis.yml @@ -1,57 +1,29 @@ -name: "Go Combined Analysis" +name: Go Combined Analysis on: pull_request: - branches: - - develop - - main - types: - - opened - - edited - - synchronize - - reopened + branches: [develop, release-candidate, main] + types: [opened, synchronize, reopened] + paths-ignore: + - '**.md' + - 'docs/**' + - '.github/**' + - 'LICENSE' + - '.gitignore' permissions: id-token: write contents: read - pull-requests: read - actions: read + pull-requests: write security-events: write jobs: - GoLangCI-Lint: - name: Run GoLangCI-Lint to SDK - runs-on: ubuntu-24.04 - steps: - - name: Checkout Repository - uses: actions/checkout@v4 - - # Using GolangCI-Lint Module - - name: Run GoLangCI Lint - uses: LerianStudio/github-actions-golangci-lint@main - with: - lerian_studio_midaz_push_bot_app_id: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_APP_ID }} - lerian_studio_midaz_push_bot_private_key: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_PRIVATE_KEY }} - lerian_ci_cd_user_gpg_key: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY }} - lerian_ci_cd_user_gpg_key_password: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY_PASSWORD }} - lerian_ci_cd_user_name: ${{ secrets.LERIAN_CI_CD_USER_NAME }} - lerian_ci_cd_user_email: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} - go_version: '1.25' - github_token: ${{ secrets.GITHUB_TOKEN }} - golangci_lint_version: 'v2.11.2' - - GoSec: - name: Run GoSec to SDK - runs-on: ubuntu-24.04 - steps: - - uses: actions/checkout@v4 - - - uses: actions/setup-go@v5 - with: - go-version: '1.25' - cache: false - - - name: Gosec Scanner - uses: securego/gosec@master - with: - args: ./... + go-analysis: + name: Go Analysis + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/go-pr-analysis.yml@v1.28.12 + with: + go_version: "1.25" + golangci_lint_version: "v2.11.2" + fail_on_coverage_threshold: true + go_private_modules: "github.com/LerianStudio/*" + secrets: inherit diff --git a/.github/workflows/pr-security-scan.yml b/.github/workflows/pr-security-scan.yml new file mode 100644 index 0000000..11339c6 --- /dev/null +++ b/.github/workflows/pr-security-scan.yml @@ -0,0 +1,24 @@ +name: PR Security Scan + +on: + pull_request: + branches: [develop, release-candidate, main] + paths-ignore: + - '**.md' + - 'docs/**' + - 'LICENSE' + - '.gitignore' + +permissions: + actions: read + id-token: write + contents: read + pull-requests: write + security-events: write + +jobs: + security: + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-security-scan.yml@v1.28.12 + with: + enable_docker_scan: false + secrets: inherit diff --git a/.github/workflows/pr-validation.yml b/.github/workflows/pr-validation.yml new file mode 100644 index 0000000..b4c0678 --- /dev/null +++ b/.github/workflows/pr-validation.yml @@ -0,0 +1,37 @@ +name: PR Validation + +on: + pull_request: + branches: [develop, release-candidate, main] + types: [opened, edited, synchronize, reopened, ready_for_review] + +permissions: + contents: read + pull-requests: write + issues: write + +jobs: + validate: + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-validation.yml@v1.28.12 + with: + enforce_source_branches: true + allowed_source_branches: 'develop|release-candidate|hotfix/*' + target_branches_for_source_check: 'main' + pr_title_scopes: | + assert + ci + config + constants + core + deps + docs + log + metrics + middleware + redaction + runtime + scripts + tests + tracing + zap + secrets: inherit diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml index 0b1dee7..2497b01 100644 --- a/.github/workflows/release.yml +++ b/.github/workflows/release.yml @@ -1,100 +1,19 @@ -name: release +name: Release on: push: - branches: - - develop - - main - paths-ignore: - - '.gitignore' - - '**/*.env' - - '*.env' - - '**/*.md' - - '*.md' - - '**/*.txt' - - '*.txt' - tags-ignore: - - '**' + branches: [main, release-candidate, develop] permissions: id-token: write contents: write + issues: write pull-requests: write + packages: read jobs: - publish_release: - runs-on: ubuntu-24.04 - environment: - name: create_release - name: Create Release to SDK - steps: - - uses: actions/create-github-app-token@v1 - id: app-token - with: - app-id: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_APP_ID }} - private-key: ${{ secrets.LERIAN_STUDIO_MIDAZ_PUSH_BOT_PRIVATE_KEY }} - - - name: Checkout repository - uses: actions/checkout@v4 - with: - fetch-depth: 0 - token: ${{ steps.app-token.outputs.token }} - - - name: Sync with remote branch - run: | - git fetch origin ${{ github.ref_name }} - git reset --hard origin/${{ github.ref_name }} - - - name: Import GPG key - uses: crazy-max/ghaction-import-gpg@v6 - id: import_gpg - with: - gpg_private_key: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY }} - passphrase: ${{ secrets.LERIAN_CI_CD_USER_GPG_KEY_PASSWORD }} - git_committer_name: ${{ secrets.LERIAN_CI_CD_USER_NAME }} - git_committer_email: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} - git_config_global: true - git_user_signingkey: true - git_commit_gpgsign: true - - - name: Semantic Release - uses: cycjimmy/semantic-release-action@v4 - id: semantic - with: - ci: false - semantic_version: 23.0.8 - extra_plugins: | - @semantic-release/exec@6.0.3 - conventional-changelog-conventionalcommits@v7.0.2 - env: - GITHUB_TOKEN: ${{ steps.app-token.outputs.token }} - GIT_AUTHOR_NAME: ${{ secrets.LERIAN_CI_CD_USER_NAME }} - GIT_AUTHOR_EMAIL: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} - GIT_COMMITTER_NAME: ${{ secrets.LERIAN_CI_CD_USER_NAME }} - GIT_COMMITTER_EMAIL: ${{ secrets.LERIAN_CI_CD_USER_EMAIL }} - - - name: Create Backmerge PR (main → develop) - if: github.ref == 'refs/heads/main' && steps.semantic.outputs.new_release_published == 'true' - run: | - # Check if this release came from a hotfix merge - LAST_COMMIT_MSG=$(git log -1 --pretty=format:"%s") - if [[ "$LAST_COMMIT_MSG" =~ Merge.*hotfix ]]; then - echo "Skipping backmerge: Release came from hotfix branch" - exit 0 - fi - - # Create PR from main to develop - gh pr create \ - --title "chore(release): Backmerge main → develop after release ${{ steps.semantic.outputs.new_release_version }}" \ - --body "Automated backmerge after release ${{ steps.semantic.outputs.new_release_version }}" \ - --base develop \ - --head main \ - --label "automated" \ - --label "backmerge" || echo "PR already exists or no changes to merge" - env: - GITHUB_TOKEN: ${{ steps.app-token.outputs.token }} - - - uses: actions/setup-go@v5 - with: - go-version: '1.25' - cache: false + release: + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/release.yml@v1.28.12 + with: + enable_changelog: ${{ github.ref == 'refs/heads/main' }} + secrets: inherit diff --git a/.github/workflows/routine.yml b/.github/workflows/routine.yml new file mode 100644 index 0000000..71c5f64 --- /dev/null +++ b/.github/workflows/routine.yml @@ -0,0 +1,43 @@ +name: Repository Routines + +on: + schedule: + - cron: "0 3 * * 1" + pull_request: + types: [closed] + push: + branches: [main] + paths: + - .github/labels.yml + workflow_dispatch: + inputs: + routine: + description: Routine to run + type: choice + options: + - all + - branch-cleanup-stale + - stale-pr + - stale-issue + - labels-sync + - workflow-runs-cleanup + default: all + dry_run: + description: Preview changes without applying them + type: boolean + default: true + +permissions: + contents: write + pull-requests: write + issues: write + actions: write + +jobs: + routine: + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/routine.yml@v1.28.12 + with: + routine: ${{ inputs.routine || 'all' }} + dry_run: ${{ inputs.dry_run || false }} + merged_branch: ${{ github.head_ref }} + secrets: inherit From d15cf826e707ae76e59cf9587a20f6e15e384824 Mon Sep 17 00:00:00 2001 From: Lucas Bedatty Date: Wed, 13 May 2026 11:53:55 -0300 Subject: [PATCH 18/26] fix(ci): address CodeRabbit feedback on release branches and dependabot schedule - .releaserc.yml: declare release-candidate (prerelease: rc) so semantic-release matches the workflow trigger set [main, release-candidate, develop]. - .github/dependabot.yml: add time: "08:00" to the github-actions schedule for consistency with the gomod entry. X-Lerian-Ref: 0x1 --- .github/dependabot.yml | 1 + .releaserc.yml | 2 ++ 2 files changed, 3 insertions(+) diff --git a/.github/dependabot.yml b/.github/dependabot.yml index 29a9431..d966402 100644 --- a/.github/dependabot.yml +++ b/.github/dependabot.yml @@ -26,6 +26,7 @@ updates: schedule: interval: "weekly" day: "monday" + time: "08:00" timezone: "America/Sao_Paulo" target-branch: "develop" open-pull-requests-limit: 10 diff --git a/.releaserc.yml b/.releaserc.yml index f6b6a1a..0d67e8d 100644 --- a/.releaserc.yml +++ b/.releaserc.yml @@ -40,5 +40,7 @@ plugins: branches: - name: main + - name: release-candidate + prerelease: rc - name: develop prerelease: beta From cdadd35ed0797c3c84f11d8d3129474ad41ac0ab Mon Sep 17 00:00:00 2001 From: Lucas Bedatty Date: Wed, 13 May 2026 12:05:16 -0300 Subject: [PATCH 19/26] fix(ci): pin go_version to 1.25.9 to satisfy go.mod toolchain requirement go.mod requires go >= 1.25.9 but setup-go was resolving "1.25" to 1.25.6, which fails build/test/lint under GOTOOLCHAIN=local. X-Lerian-Ref: 0x1 --- .github/workflows/go-combined-analysis.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/.github/workflows/go-combined-analysis.yml b/.github/workflows/go-combined-analysis.yml index 7d07081..ae74dbb 100644 --- a/.github/workflows/go-combined-analysis.yml +++ b/.github/workflows/go-combined-analysis.yml @@ -22,7 +22,7 @@ jobs: name: Go Analysis uses: LerianStudio/github-actions-shared-workflows/.github/workflows/go-pr-analysis.yml@v1.28.12 with: - go_version: "1.25" + go_version: "1.25.9" golangci_lint_version: "v2.11.2" fail_on_coverage_threshold: true go_private_modules: "github.com/LerianStudio/*" From f9a4f9bf64724f549a19d3e724c9114ce05dd6b1 Mon Sep 17 00:00:00 2001 From: Gandalf Date: Fri, 15 May 2026 16:51:00 -0300 Subject: [PATCH 20/26] chore(ci): prepare lib-observability stable gates Update shared workflows, fix lint findings, and make the gosec target use the Go bin fallback when gosec is installed locally. Requested-by: @qnen --- .github/workflows/go-combined-analysis.yml | 11 ++++++++++- .github/workflows/pr-security-scan.yml | 2 +- .github/workflows/pr-validation.yml | 2 +- .github/workflows/release.yml | 2 +- .github/workflows/routine.yml | 2 +- Makefile | 5 +++-- log/go_logger.go | 2 +- log/log.go | 23 +++++++++++++--------- middleware/telemetry.go | 2 +- runtime/error_reporter.go | 2 +- tracing/otel.go | 4 ++-- 11 files changed, 36 insertions(+), 21 deletions(-) diff --git a/.github/workflows/go-combined-analysis.yml b/.github/workflows/go-combined-analysis.yml index ae74dbb..8e9227a 100644 --- a/.github/workflows/go-combined-analysis.yml +++ b/.github/workflows/go-combined-analysis.yml @@ -20,10 +20,19 @@ permissions: jobs: go-analysis: name: Go Analysis - uses: LerianStudio/github-actions-shared-workflows/.github/workflows/go-pr-analysis.yml@v1.28.12 + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/go-pr-analysis.yml@v1.30.0 with: + runner_type: "blacksmith-4vcpu-ubuntu-2404" + app_name_prefix: "lib-observability" go_version: "1.25.9" golangci_lint_version: "v2.11.2" + golangci_lint_args: "--timeout=5m" + coverage_threshold: 80 fail_on_coverage_threshold: true + enable_lint: true + enable_security: true + enable_tests: true + enable_coverage: true + enable_build: true go_private_modules: "github.com/LerianStudio/*" secrets: inherit diff --git a/.github/workflows/pr-security-scan.yml b/.github/workflows/pr-security-scan.yml index 11339c6..99a08ef 100644 --- a/.github/workflows/pr-security-scan.yml +++ b/.github/workflows/pr-security-scan.yml @@ -18,7 +18,7 @@ permissions: jobs: security: - uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-security-scan.yml@v1.28.12 + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-security-scan.yml@v1.30.0 with: enable_docker_scan: false secrets: inherit diff --git a/.github/workflows/pr-validation.yml b/.github/workflows/pr-validation.yml index b4c0678..9f15d2e 100644 --- a/.github/workflows/pr-validation.yml +++ b/.github/workflows/pr-validation.yml @@ -12,7 +12,7 @@ permissions: jobs: validate: - uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-validation.yml@v1.28.12 + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/pr-validation.yml@v1.30.0 with: enforce_source_branches: true allowed_source_branches: 'develop|release-candidate|hotfix/*' diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml index 2497b01..8a04afe 100644 --- a/.github/workflows/release.yml +++ b/.github/workflows/release.yml @@ -13,7 +13,7 @@ permissions: jobs: release: - uses: LerianStudio/github-actions-shared-workflows/.github/workflows/release.yml@v1.28.12 + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/release.yml@v1.30.0 with: enable_changelog: ${{ github.ref == 'refs/heads/main' }} secrets: inherit diff --git a/.github/workflows/routine.yml b/.github/workflows/routine.yml index 71c5f64..5cd27ff 100644 --- a/.github/workflows/routine.yml +++ b/.github/workflows/routine.yml @@ -35,7 +35,7 @@ permissions: jobs: routine: - uses: LerianStudio/github-actions-shared-workflows/.github/workflows/routine.yml@v1.28.12 + uses: LerianStudio/github-actions-shared-workflows/.github/workflows/routine.yml@v1.30.0 with: routine: ${{ inputs.routine || 'all' }} dry_run: ${{ inputs.dry_run || false }} diff --git a/Makefile b/Makefile index faf8ab8..655f30c 100644 --- a/Makefile +++ b/Makefile @@ -67,6 +67,7 @@ GOLANGCI_LINT_VERSION ?= v2.1.6 TEST_REPORTS_DIR ?= ./reports GOTESTSUM = $(shell command -v gotestsum 2>/dev/null) +GOSEC = $(shell command -v gosec 2>/dev/null || printf "%s/bin/gosec" "$$(go env GOPATH)") RETRY_ON_FAIL ?= 0 .PHONY: tools tools-gotestsum @@ -578,7 +579,7 @@ sec: echo "Running security checks on all packages..."; \ if [ "$(SARIF)" = "1" ]; then \ echo "Generating SARIF output: gosec-report.sarif"; \ - if gosec -fmt sarif -out gosec-report.sarif ./...; then \ + if "$(GOSEC)" -fmt sarif -out gosec-report.sarif ./...; then \ echo "$(GREEN)$(BOLD)[ok]$(NC) SARIF report generated: gosec-report.sarif$(GREEN) ✔️$(NC)"; \ else \ printf "\n%s%sSecurity issues found by gosec. Please address them before proceeding.%s\n\n" "$(BOLD)" "$(RED)" "$(NC)"; \ @@ -586,7 +587,7 @@ sec: exit 1; \ fi; \ else \ - if gosec ./...; then \ + if "$(GOSEC)" ./...; then \ echo "$(GREEN)$(BOLD)[ok]$(NC) Security checks completed$(GREEN) ✔️$(NC)"; \ else \ printf "\n%s%sSecurity issues found by gosec. Please address them before proceeding.%s\n\n" "$(BOLD)" "$(RED)" "$(NC)"; \ diff --git a/log/go_logger.go b/log/go_logger.go index faf1f49..78347f6 100644 --- a/log/go_logger.go +++ b/log/go_logger.go @@ -175,7 +175,7 @@ func isTypedNil(v any) bool { rv := reflect.ValueOf(v) switch rv.Kind() { - case reflect.Ptr, reflect.Interface, reflect.Func, reflect.Map, reflect.Slice, reflect.Chan: + case reflect.Pointer, reflect.Interface, reflect.Func, reflect.Map, reflect.Slice, reflect.Chan: return rv.IsNil() default: return false diff --git a/log/log.go b/log/log.go index bd3e6c3..be21691 100644 --- a/log/log.go +++ b/log/log.go @@ -37,6 +37,11 @@ type Level uint8 // LevelInfo (2) -- errors + warnings + info // LevelDebug (3) -- everything const ( + levelDebugString = "debug" + levelInfoString = "info" + levelWarnString = "warn" + levelErrorString = "error" + LevelError Level = iota LevelWarn LevelInfo @@ -51,13 +56,13 @@ const LevelUnknown Level = 255 func (level Level) String() string { switch level { case LevelDebug: - return "debug" + return levelDebugString case LevelInfo: - return "info" + return levelInfoString case LevelWarn: - return "warn" + return levelWarnString case LevelError: - return "error" + return levelErrorString default: return "unknown" } @@ -67,13 +72,13 @@ func (level Level) String() string { // Leading and trailing whitespace is trimmed before matching. func ParseLevel(lvl string) (Level, error) { switch strings.ToLower(strings.TrimSpace(lvl)) { - case "debug": + case levelDebugString: return LevelDebug, nil - case "info": + case levelInfoString: return LevelInfo, nil - case "warn", "warning": + case levelWarnString, "warning": return LevelWarn, nil - case "error": + case levelErrorString: return LevelError, nil } @@ -112,5 +117,5 @@ func Bool(key string, value bool) Field { // Err creates the conventional `error` field. func Err(err error) Field { - return Field{Key: "error", Value: err} + return Field{Key: levelErrorString, Value: err} } diff --git a/middleware/telemetry.go b/middleware/telemetry.go index eded981..9f7c7d3 100644 --- a/middleware/telemetry.go +++ b/middleware/telemetry.go @@ -300,7 +300,7 @@ func getValidBodyRequestID(req any) (string, bool) { // Check for typed-nil interface. v := reflect.ValueOf(req) - if (v.Kind() == reflect.Ptr || v.Kind() == reflect.Interface) && v.IsNil() { + if (v.Kind() == reflect.Pointer || v.Kind() == reflect.Interface) && v.IsNil() { return "", false } diff --git a/runtime/error_reporter.go b/runtime/error_reporter.go index ff39c84..9ecd530 100644 --- a/runtime/error_reporter.go +++ b/runtime/error_reporter.go @@ -169,7 +169,7 @@ func isTypedNil(v any) bool { rv := reflect.ValueOf(v) switch rv.Kind() { - case reflect.Ptr, reflect.Interface, reflect.Slice, reflect.Map, reflect.Chan, reflect.Func: + case reflect.Pointer, reflect.Interface, reflect.Slice, reflect.Map, reflect.Chan, reflect.Func: return rv.IsNil() default: return false diff --git a/tracing/otel.go b/tracing/otel.go index df6dab2..cb2aa66 100644 --- a/tracing/otel.go +++ b/tracing/otel.go @@ -450,7 +450,7 @@ func isNilShutdownable(s shutdownable) bool { v := reflect.ValueOf(s) - return v.Kind() == reflect.Ptr && v.IsNil() + return v.Kind() == reflect.Pointer && v.IsNil() } func buildShutdownHandlers(l log.Logger, components ...shutdownable) (func(), func(context.Context) error) { @@ -497,7 +497,7 @@ func isNilSpan(span trace.Span) bool { v := reflect.ValueOf(span) - return v.Kind() == reflect.Ptr && v.IsNil() + return v.Kind() == reflect.Pointer && v.IsNil() } // maxSpanErrorLength is the maximum length for error messages written to span status/events. From c2a45da6b218dbc8d3b2a615181ffee127b633e1 Mon Sep 17 00:00:00 2001 From: Gandalf Date: Fri, 15 May 2026 17:02:18 -0300 Subject: [PATCH 21/26] fix(ci): handle GOBIN in gosec fallback Update the gosec resolver to prefer PATH, then GOBIN, then GOPATH/bin so the sec target works with custom Go binary install directories. Requested-by: @qnen --- Makefile | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 655f30c..c73b81e 100644 --- a/Makefile +++ b/Makefile @@ -67,7 +67,13 @@ GOLANGCI_LINT_VERSION ?= v2.1.6 TEST_REPORTS_DIR ?= ./reports GOTESTSUM = $(shell command -v gotestsum 2>/dev/null) -GOSEC = $(shell command -v gosec 2>/dev/null || printf "%s/bin/gosec" "$$(go env GOPATH)") +GOSEC = $(shell command -v gosec 2>/dev/null || \ + GOBIN="$$(go env GOBIN)"; \ + if [ -n "$$GOBIN" ]; then \ + printf "%s/gosec" "$$GOBIN"; \ + else \ + printf "%s/bin/gosec" "$$(go env GOPATH)"; \ + fi) RETRY_ON_FAIL ?= 0 .PHONY: tools tools-gotestsum From d53637303478902e9b68faf578946b050eaaca8d Mon Sep 17 00:00:00 2001 From: Gandalf Date: Fri, 15 May 2026 17:03:36 -0300 Subject: [PATCH 22/26] fix(log): decouple error field key from level strings Keep the structured error field key independent from log level labels. Requested-by: @qnen --- log/log.go | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/log/log.go b/log/log.go index be21691..1a70456 100644 --- a/log/log.go +++ b/log/log.go @@ -42,6 +42,8 @@ const ( levelWarnString = "warn" levelErrorString = "error" + errorFieldKey = "error" + LevelError Level = iota LevelWarn LevelInfo @@ -117,5 +119,5 @@ func Bool(key string, value bool) Field { // Err creates the conventional `error` field. func Err(err error) Field { - return Field{Key: levelErrorString, Value: err} + return Field{Key: errorFieldKey, Value: err} } From 136f208283dc8d9308cd39ff37c81e7166d9708a Mon Sep 17 00:00:00 2001 From: Gandalf Date: Fri, 15 May 2026 17:28:19 -0300 Subject: [PATCH 23/26] feat: add logging middleware Requested-by: @qnen --- middleware/logging.go | 297 ++++++++++++++++++++++++++++++ middleware/logging_obfuscation.go | 131 +++++++++++++ middleware/logging_test.go | 191 +++++++++++++++++++ middleware/metrics.go | 5 +- observability.go | 13 ++ observability_test.go | 30 +++ 6 files changed, 665 insertions(+), 2 deletions(-) create mode 100644 middleware/logging.go create mode 100644 middleware/logging_obfuscation.go create mode 100644 middleware/logging_test.go create mode 100644 observability_test.go diff --git a/middleware/logging.go b/middleware/logging.go new file mode 100644 index 0000000..dcc31a6 --- /dev/null +++ b/middleware/logging.go @@ -0,0 +1,297 @@ +package middleware + +import ( + "context" + "encoding/json" + "net/url" + "os" + "reflect" + "strconv" + "strings" + "time" + + observability "github.com/LerianStudio/lib-observability" + constant "github.com/LerianStudio/lib-observability/constants" + obslog "github.com/LerianStudio/lib-observability/log" + "github.com/gofiber/fiber/v2" + "go.opentelemetry.io/otel/attribute" + "google.golang.org/grpc" +) + +const ( + headerReferer = "Referer" + headerContentType = "Content-Type" + + maxObfuscationDepth = 32 +) + +var logObfuscationDisabled = os.Getenv("LOG_OBFUSCATION_DISABLED") == "true" + +// RequestInfo stores HTTP access log data. +type RequestInfo struct { + Method string + Username string + URI string + Referer string + RemoteAddress string + Status int + Date time.Time + Duration time.Duration + UserAgent string + TraceID string + Protocol string + Size int + Body string +} + +// ResponseMetricsWrapper stores response metadata used to finish RequestInfo. +type ResponseMetricsWrapper struct { + Context *fiber.Ctx + StatusCode int + Size int +} + +type logMiddleware struct { + Logger obslog.Logger + ObfuscationDisabled bool +} + +// LogMiddlewareOption configures HTTP and gRPC logging middleware. +type LogMiddlewareOption func(l *logMiddleware) + +// WithCustomLogger configures a custom logger for access logging. +func WithCustomLogger(logger obslog.Logger) LogMiddlewareOption { + return func(l *logMiddleware) { + if !isNilLogger(logger) { + l.Logger = logger + } + } +} + +// WithObfuscationDisabled disables request body obfuscation. +func WithObfuscationDisabled(disabled bool) LogMiddlewareOption { + return func(l *logMiddleware) { + l.ObfuscationDisabled = disabled + } +} + +func buildOpts(opts ...LogMiddlewareOption) *logMiddleware { + mid := &logMiddleware{ + Logger: &obslog.GoLogger{}, + ObfuscationDisabled: logObfuscationDisabled, + } + + for _, opt := range opts { + opt(mid) + } + + return mid +} + +func isNilLogger(logger obslog.Logger) bool { + if logger == nil { + return true + } + + value := reflect.ValueOf(logger) + switch value.Kind() { + case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Pointer, reflect.Slice: + return value.IsNil() + default: + return false + } +} + +// NewRequestInfo creates RequestInfo from a Fiber context. +func NewRequestInfo(c *fiber.Ctx, obfuscationDisabled bool) *RequestInfo { + if c == nil { + return &RequestInfo{Date: time.Now().UTC()} + } + + username, referer := "-", "-" + rawURL := string(c.Request().URI().FullURI()) + + parsedURL, err := url.Parse(rawURL) + if err == nil && parsedURL.User != nil { + if name := parsedURL.User.Username(); name != "" { + username = name + } + } + + if c.Get(headerReferer) != "" { + referer = sanitizeReferer(c.Get(headerReferer)) + } + + body := "" + + if c.Request().Header.ContentLength() > 0 { + bodyBytes := c.Body() + if !obfuscationDisabled { + body = getBodyObfuscatedString(c, bodyBytes) + } else { + body = string(bodyBytes) + } + } + + return &RequestInfo{ + TraceID: c.Get(headerID), + Method: c.Method(), + URI: sanitizeURL(c.OriginalURL()), + Username: username, + Referer: referer, + UserAgent: sanitizeLogValue(c.Get(headerUserAgent)), + RemoteAddress: c.IP(), + Protocol: c.Protocol(), + Date: time.Now().UTC(), + Body: body, + } +} + +// CLFString returns a Common Log Format style access log entry. +func (r *RequestInfo) CLFString() string { + return strings.Join([]string{ + sanitizeLogValue(r.RemoteAddress), + "-", + sanitizeLogValue(r.Username), + sanitizeLogValue(r.Protocol), + r.Date.Format("[02/Jan/2006:15:04:05 -0700]"), + `"` + sanitizeLogValue(r.Method) + " " + sanitizeLogValue(r.URI) + `"`, + strconv.Itoa(r.Status), + strconv.Itoa(r.Size), + sanitizeLogValue(r.Referer), + sanitizeLogValue(r.UserAgent), + }, " ") +} + +func (r *RequestInfo) String() string { + return r.CLFString() +} + +// FinishRequestInfo fills response status, body size, and duration. +func (r *RequestInfo) FinishRequestInfo(rw *ResponseMetricsWrapper) { + if rw == nil { + return + } + + r.Duration = time.Since(r.Date) + r.Status = rw.StatusCode + r.Size = rw.Size +} + +// WithHTTPLogging logs Fiber HTTP access requests. +func WithHTTPLogging(opts ...LogMiddlewareOption) fiber.Handler { + return func(c *fiber.Ctx) error { + if c.Path() == "/health" { + return c.Next() + } + + if strings.Contains(c.Path(), "swagger") && c.Path() != "/swagger/index.html" { + return c.Next() + } + + setRequestHeaderID(c) + + mid := buildOpts(opts...) + info := NewRequestInfo(c, mid.ObfuscationDisabled) + + requestID := c.Get(headerID) + logger := mid.Logger. + With(obslog.String(headerID, info.TraceID)). + With(obslog.String("message_prefix", requestID+constant.LoggerDefaultSeparator)) + + ctx := observability.ContextWithLogger(c.UserContext(), logger) + c.SetUserContext(ctx) + + err := c.Next() + + rw := ResponseMetricsWrapper{ + Context: c, + StatusCode: c.Response().StatusCode(), + Size: len(c.Response().Body()), + } + + info.FinishRequestInfo(&rw) + logger.Log(c.UserContext(), obslog.LevelInfo, info.CLFString()) + + return err + } +} + +// WithGrpcLogging logs gRPC unary requests and attaches a request-scoped logger to context. +func WithGrpcLogging(opts ...LogMiddlewareOption) grpc.UnaryServerInterceptor { + return func( + ctx context.Context, + req any, + info *grpc.UnaryServerInfo, + handler grpc.UnaryHandler, + ) (any, error) { + ctx = normalizeGRPCContext(ctx) + requestID := resolveGRPCRequestID(ctx, req) + + if rid, ok := getValidBodyRequestID(req); ok { + if prev := getMetadataID(ctx); prev != "" && prev != rid { + mid := buildOpts(opts...) + mid.Logger.Log(ctx, obslog.LevelDebug, "Overriding correlation id from metadata with body request_id", + obslog.String("metadata_id", prev), + obslog.String("body_request_id", rid), + ) + } + } + + ctx = observability.ContextWithHeaderID(ctx, requestID) + ctx = observability.ContextWithSpanAttributes(ctx, attribute.String("app.request.request_id", requestID)) + + _, _, reqID, _ := observability.NewTrackingFromContext(ctx) + + mid := buildOpts(opts...) + logger := mid.Logger. + With(obslog.String(headerID, reqID)). + With(obslog.String("message_prefix", reqID+constant.LoggerDefaultSeparator)) + + ctx = observability.ContextWithLogger(ctx, logger) + + start := time.Now() + resp, err := handler(ctx, req) + duration := time.Since(start) + + methodName := "unknown" + if info != nil { + methodName = info.FullMethod + } + + fields := []obslog.Field{ + obslog.String("method", methodName), + obslog.String("duration", duration.String()), + } + if err != nil { + fields = append(fields, obslog.Err(err)) + } + + logger.Log(ctx, obslog.LevelInfo, "gRPC request finished", fields...) + + return resp, err + } +} + +func handleJSONBody(bodyBytes []byte) string { + var bodyData any + if err := json.Unmarshal(bodyBytes, &bodyData); err != nil { + return string(bodyBytes) + } + + switch v := bodyData.(type) { + case map[string]any: + obfuscateMapRecursively(v, 0) + case []any: + obfuscateSliceRecursively(v, 0) + default: + return string(bodyBytes) + } + + updatedBody, err := json.Marshal(bodyData) + if err != nil { + return string(bodyBytes) + } + + return string(updatedBody) +} diff --git a/middleware/logging_obfuscation.go b/middleware/logging_obfuscation.go new file mode 100644 index 0000000..1bd9710 --- /dev/null +++ b/middleware/logging_obfuscation.go @@ -0,0 +1,131 @@ +package middleware + +import ( + "net/url" + "strings" + + constant "github.com/LerianStudio/lib-observability/constants" + "github.com/LerianStudio/lib-observability/redaction" + "github.com/gofiber/fiber/v2" +) + +func getBodyObfuscatedString(c *fiber.Ctx, bodyBytes []byte) string { + contentType := c.Get(headerContentType) + + switch { + case strings.Contains(contentType, "application/json"): + return handleJSONBody(bodyBytes) + case strings.Contains(contentType, "application/x-www-form-urlencoded"): + return handleURLEncodedBody(bodyBytes) + case strings.Contains(contentType, "multipart/form-data"): + return handleMultipartBody(c) + default: + return string(bodyBytes) + } +} + +func obfuscateMapRecursively(data map[string]any, depth int) { + if depth >= maxObfuscationDepth { + return + } + + for key, value := range data { + if redaction.IsSensitiveField(key) { + data[key] = constant.ObfuscatedValue + continue + } + + switch v := value.(type) { + case map[string]any: + obfuscateMapRecursively(v, depth+1) + case []any: + obfuscateSliceRecursively(v, depth+1) + } + } +} + +func obfuscateSliceRecursively(data []any, depth int) { + if depth >= maxObfuscationDepth { + return + } + + for _, item := range data { + switch v := item.(type) { + case map[string]any: + obfuscateMapRecursively(v, depth+1) + case []any: + obfuscateSliceRecursively(v, depth+1) + } + } +} + +func handleURLEncodedBody(bodyBytes []byte) string { + formData, err := url.ParseQuery(string(bodyBytes)) + if err != nil { + return string(bodyBytes) + } + + updatedBody := url.Values{} + + for key, values := range formData { + if redaction.IsSensitiveField(key) { + for range values { + updatedBody.Add(key, constant.ObfuscatedValue) + } + + continue + } + + for _, value := range values { + updatedBody.Add(key, value) + } + } + + return updatedBody.Encode() +} + +func handleMultipartBody(c *fiber.Ctx) string { + form, err := c.MultipartForm() + if err != nil { + return "[multipart/form-data]" + } + + result := url.Values{} + + for key, values := range form.Value { + if redaction.IsSensitiveField(key) { + for range values { + result.Add(key, constant.ObfuscatedValue) + } + + continue + } + + for _, value := range values { + result.Add(key, value) + } + } + + for key := range form.File { + if redaction.IsSensitiveField(key) { + result.Add(key, constant.ObfuscatedValue) + } else { + result.Add(key, "[file]") + } + } + + return result.Encode() +} + +func sanitizeReferer(raw string) string { + parsed, err := url.Parse(raw) + if err != nil { + return "-" + } + + parsed.User = nil + parsed.RawQuery = "" + parsed.Fragment = "" + + return parsed.String() +} diff --git a/middleware/logging_test.go b/middleware/logging_test.go new file mode 100644 index 0000000..da54972 --- /dev/null +++ b/middleware/logging_test.go @@ -0,0 +1,191 @@ +//go:build unit + +package middleware + +import ( + "context" + "errors" + "io" + "net/http" + "net/http/httptest" + "strings" + "sync" + "testing" + + observability "github.com/LerianStudio/lib-observability" + obslog "github.com/LerianStudio/lib-observability/log" + "github.com/gofiber/fiber/v2" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/attribute" + "google.golang.org/grpc" + "google.golang.org/grpc/metadata" +) + +type captureLogger struct { + mu sync.Mutex + messages []string + fields []obslog.Field +} + +func (l *captureLogger) Log(_ context.Context, _ obslog.Level, msg string, fields ...obslog.Field) { + l.mu.Lock() + defer l.mu.Unlock() + + l.messages = append(l.messages, msg) + l.fields = append(l.fields, fields...) +} + +func (l *captureLogger) With(fields ...obslog.Field) obslog.Logger { + l.mu.Lock() + defer l.mu.Unlock() + + l.fields = append(l.fields, fields...) + + return l +} + +func (l *captureLogger) WithGroup(_ string) obslog.Logger { return l } + +func (l *captureLogger) Enabled(_ obslog.Level) bool { return true } + +func (l *captureLogger) Sync(_ context.Context) error { return nil } + +func (l *captureLogger) snapshot() ([]string, []obslog.Field) { + l.mu.Lock() + defer l.mu.Unlock() + + messages := append([]string(nil), l.messages...) + fields := append([]obslog.Field(nil), l.fields...) + + return messages, fields +} + +type grpcRequestWithID struct { + RequestId string +} + +func (r grpcRequestWithID) GetRequestId() string { + return r.RequestId +} + +func TestNewRequestInfoSanitizesRequestData(t *testing.T) { + app := fiber.New() + app.Post("/charge", func(c *fiber.Ctx) error { + info := NewRequestInfo(c, false) + + assert.Equal(t, "POST", info.Method) + assert.Equal(t, "/charge?name=alice&password=%2A%2A%2A%2A%2A%2A%2A%2A", info.URI) + assert.Equal(t, "https://example.com/path", info.Referer) + assert.Equal(t, "agent", info.UserAgent) + assert.JSONEq(t, "{\"nested\":{\"secret\":\"********\"},\"password\":\"********\"}", info.Body) + + return c.SendStatus(http.StatusNoContent) + }) + + req := httptest.NewRequest(http.MethodPost, "/charge?name=alice&password=secret", strings.NewReader("{\"password\":\"secret\",\"nested\":{\"secret\":\"value\"}}")) + req.Header.Set(headerContentType, "application/json") + req.Header.Set(headerReferer, "https://user:pass@example.com/path?token=secret#fragment") + req.Header.Set(headerUserAgent, "agent") + + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + assert.Equal(t, http.StatusNoContent, resp.StatusCode) +} + +func TestWithHTTPLoggingAttachesLoggerAndLogsAccessEntry(t *testing.T) { + logger := &captureLogger{} + app := fiber.New() + app.Use(WithHTTPLogging(WithCustomLogger(logger))) + app.Get("/ok", func(c *fiber.Ctx) error { + _, _, requestID, _ := observability.NewTrackingFromContext(c.UserContext()) + assert.NotEmpty(t, requestID) + assert.Same(t, logger, observability.NewLoggerFromContext(c.UserContext())) + + return c.SendString("ok") + }) + + req := httptest.NewRequest(http.MethodGet, "/ok", nil) + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + body, err := io.ReadAll(resp.Body) + require.NoError(t, err) + + assert.Equal(t, http.StatusOK, resp.StatusCode) + assert.Equal(t, "ok", string(body)) + assert.NotEmpty(t, resp.Header.Get(headerID)) + + messages, fields := logger.snapshot() + require.Len(t, messages, 1) + assert.Contains(t, messages[0], "GET /ok") + assert.Contains(t, fields, obslog.String(headerID, resp.Header.Get(headerID))) +} + +func TestWithHTTPLoggingIgnoresTypedNilLogger(t *testing.T) { + var logger *captureLogger + app := fiber.New() + app.Use(WithHTTPLogging(WithCustomLogger(logger))) + app.Get("/ok", func(c *fiber.Ctx) error { + assert.NotNil(t, observability.NewLoggerFromContext(c.UserContext())) + return c.SendStatus(http.StatusNoContent) + }) + + req := httptest.NewRequest(http.MethodGet, "/ok", nil) + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + assert.Equal(t, http.StatusNoContent, resp.StatusCode) +} + +func TestWithGrpcLoggingUsesBodyRequestIDAndLogsResult(t *testing.T) { + logger := &captureLogger{} + bodyRequestID := "4fbf011b-bb11-4c73-9f7c-4f8e19ca8402" + metadataRequestID := "7cb344b8-b5ec-4bf7-a2a1-0320763bdc67" + ctx := metadata.NewIncomingContext(context.Background(), metadata.Pairs(metadataID, metadataRequestID)) + + interceptor := WithGrpcLogging(WithCustomLogger(logger)) + resp, err := interceptor( + ctx, + grpcRequestWithID{RequestId: bodyRequestID}, + &grpc.UnaryServerInfo{FullMethod: "/service.Method"}, + func(ctx context.Context, _ any) (any, error) { + _, _, requestID, _ := observability.NewTrackingFromContext(ctx) + assert.Equal(t, bodyRequestID, requestID) + assert.Same(t, logger, observability.NewLoggerFromContext(ctx)) + assert.Contains(t, observability.AttributesFromContext(ctx), attribute.String("app.request.request_id", bodyRequestID)) + + return "ok", nil + }, + ) + require.NoError(t, err) + assert.Equal(t, "ok", resp) + + messages, fields := logger.snapshot() + assert.Contains(t, messages, "Overriding correlation id from metadata with body request_id") + assert.Contains(t, messages, "gRPC request finished") + assert.Contains(t, fields, obslog.String(headerID, bodyRequestID)) +} + +func TestWithGrpcLoggingLogsHandlerError(t *testing.T) { + logger := &captureLogger{} + expectedErr := errors.New("handler failed") + + interceptor := WithGrpcLogging(WithCustomLogger(logger)) + resp, err := interceptor( + context.Background(), + grpcRequestWithID{RequestId: "4fbf011b-bb11-4c73-9f7c-4f8e19ca8402"}, + &grpc.UnaryServerInfo{FullMethod: "/service.Method"}, + func(context.Context, any) (any, error) { + return nil, expectedErr + }, + ) + + assert.Nil(t, resp) + assert.ErrorIs(t, err, expectedErr) + + _, fields := logger.snapshot() + assert.Contains(t, fields, obslog.Err(expectedErr)) +} diff --git a/middleware/metrics.go b/middleware/metrics.go index 1db2acf..a277092 100644 --- a/middleware/metrics.go +++ b/middleware/metrics.go @@ -81,7 +81,8 @@ func (tm *TelemetryMiddleware) ensureMetricsCollector() error { return } - metricsCollectorShutdown = make(chan struct{}) + shutdown := make(chan struct{}) + metricsCollectorShutdown = shutdown ticker := time.NewTicker(getMetricsCollectionInterval()) runtime.SafeGoWithContextAndComponent( @@ -96,7 +97,7 @@ func (tm *TelemetryMiddleware) ensureMetricsCollector() error { for { select { - case <-metricsCollectorShutdown: + case <-shutdown: ticker.Stop() return case <-ticker.C: diff --git a/observability.go b/observability.go index f4440c4..7cf072c 100644 --- a/observability.go +++ b/observability.go @@ -270,3 +270,16 @@ func AttributesFromContext(ctx context.Context) []attribute.KeyValue { return nil } + +// ReplaceAttributes resets the current AttrBag with a new set of request-wide span attributes. +func ReplaceAttributes(ctx context.Context, kv ...attribute.KeyValue) context.Context { + if ctx == nil { + ctx = context.Background() + } + + values := cloneContextValues(ctx) + + values.AttrBag = append([]attribute.KeyValue(nil), kv...) + + return context.WithValue(ctx, ContextKey, values) +} diff --git a/observability_test.go b/observability_test.go new file mode 100644 index 0000000..726c39b --- /dev/null +++ b/observability_test.go @@ -0,0 +1,30 @@ +//go:build unit + +package observability + +import ( + "context" + "testing" + + "github.com/stretchr/testify/assert" + "go.opentelemetry.io/otel/attribute" +) + +func TestReplaceAttributes(t *testing.T) { + ctx := ContextWithSpanAttributes(context.Background(), + attribute.String("service.name", "old"), + attribute.String("tenant.id", "tenant-1"), + ) + + ctx = ReplaceAttributes(ctx, attribute.String("service.name", "new")) + + attrs := AttributesFromContext(ctx) + assert.Equal(t, []attribute.KeyValue{attribute.String("service.name", "new")}, attrs) +} + +func TestReplaceAttributesNilContext(t *testing.T) { + ctx := ReplaceAttributes(nil, attribute.String("service.name", "new")) + + attrs := AttributesFromContext(ctx) + assert.Equal(t, []attribute.KeyValue{attribute.String("service.name", "new")}, attrs) +} From 949b0efa7cce15894505b4dc71774d49b9614083 Mon Sep 17 00:00:00 2001 From: Gandalf Date: Fri, 15 May 2026 17:40:32 -0300 Subject: [PATCH 24/26] fix: address logging review feedback Requested-by: @qnen --- middleware/logging.go | 26 +++++++++++++++++++++++--- middleware/logging_obfuscation.go | 2 +- middleware/logging_test.go | 23 ++++++++++++++++++++++- 3 files changed, 46 insertions(+), 5 deletions(-) diff --git a/middleware/logging.go b/middleware/logging.go index dcc31a6..b37bf45 100644 --- a/middleware/logging.go +++ b/middleware/logging.go @@ -3,6 +3,7 @@ package middleware import ( "context" "encoding/json" + "errors" "net/url" "os" "reflect" @@ -123,9 +124,9 @@ func NewRequestInfo(c *fiber.Ctx, obfuscationDisabled bool) *RequestInfo { } body := "" + bodyBytes := c.Body() - if c.Request().Header.ContentLength() > 0 { - bodyBytes := c.Body() + if len(bodyBytes) > 0 { if !obfuscationDisabled { body = getBodyObfuscatedString(c, bodyBytes) } else { @@ -203,10 +204,11 @@ func WithHTTPLogging(opts ...LogMiddlewareOption) fiber.Handler { c.SetUserContext(ctx) err := c.Next() + statusCode := httpStatusCode(c, err) rw := ResponseMetricsWrapper{ Context: c, - StatusCode: c.Response().StatusCode(), + StatusCode: statusCode, Size: len(c.Response().Body()), } @@ -217,6 +219,24 @@ func WithHTTPLogging(opts ...LogMiddlewareOption) fiber.Handler { } } +func httpStatusCode(c *fiber.Ctx, err error) int { + statusCode := c.Response().StatusCode() + if err == nil { + return statusCode + } + + var fiberErr *fiber.Error + if errors.As(err, &fiberErr) { + return fiberErr.Code + } + + if statusCode < fiber.StatusBadRequest { + return fiber.StatusInternalServerError + } + + return statusCode +} + // WithGrpcLogging logs gRPC unary requests and attaches a request-scoped logger to context. func WithGrpcLogging(opts ...LogMiddlewareOption) grpc.UnaryServerInterceptor { return func( diff --git a/middleware/logging_obfuscation.go b/middleware/logging_obfuscation.go index 1bd9710..efbbf98 100644 --- a/middleware/logging_obfuscation.go +++ b/middleware/logging_obfuscation.go @@ -10,7 +10,7 @@ import ( ) func getBodyObfuscatedString(c *fiber.Ctx, bodyBytes []byte) string { - contentType := c.Get(headerContentType) + contentType := strings.ToLower(c.Get(headerContentType)) switch { case strings.Contains(contentType, "application/json"): diff --git a/middleware/logging_test.go b/middleware/logging_test.go index da54972..7df247f 100644 --- a/middleware/logging_test.go +++ b/middleware/logging_test.go @@ -84,7 +84,7 @@ func TestNewRequestInfoSanitizesRequestData(t *testing.T) { }) req := httptest.NewRequest(http.MethodPost, "/charge?name=alice&password=secret", strings.NewReader("{\"password\":\"secret\",\"nested\":{\"secret\":\"value\"}}")) - req.Header.Set(headerContentType, "application/json") + req.Header.Set(headerContentType, "Application/JSON") req.Header.Set(headerReferer, "https://user:pass@example.com/path?token=secret#fragment") req.Header.Set(headerUserAgent, "agent") @@ -140,6 +140,27 @@ func TestWithHTTPLoggingIgnoresTypedNilLogger(t *testing.T) { assert.Equal(t, http.StatusNoContent, resp.StatusCode) } +func TestWithHTTPLoggingLogsErrorStatus(t *testing.T) { + logger := &captureLogger{} + app := fiber.New() + app.Use(WithHTTPLogging(WithCustomLogger(logger))) + app.Get("/fail", func(*fiber.Ctx) error { + return errors.New("handler failed") + }) + + req := httptest.NewRequest(http.MethodGet, "/fail", nil) + resp, err := app.Test(req) + require.NoError(t, err) + defer func() { require.NoError(t, resp.Body.Close()) }() + + assert.Equal(t, http.StatusInternalServerError, resp.StatusCode) + + messages, _ := logger.snapshot() + require.Len(t, messages, 1) + assert.Contains(t, messages[0], "GET /fail") + assert.Contains(t, messages[0], " 500 ") +} + func TestWithGrpcLoggingUsesBodyRequestIDAndLogsResult(t *testing.T) { logger := &captureLogger{} bodyRequestID := "4fbf011b-bb11-4c73-9f7c-4f8e19ca8402" From 8131921b8efb8f8e1e334ae6f9746260bd8067f6 Mon Sep 17 00:00:00 2001 From: "Gandalf, the White" Date: Fri, 15 May 2026 20:06:31 -0300 Subject: [PATCH 25/26] test: raise lib-observability unit coverage Requested-by: @qnen --- constants/opentelemetry_test.go | 22 +++ context_tracking_test.go | 82 +++++++++ log/nil_test.go | 24 +++ metrics/metrics_test.go | 256 +++++++++++++++++++++++++++++ redaction/sensitive_fields_test.go | 76 +++++++++ system_test.go | 21 +++ 6 files changed, 481 insertions(+) create mode 100644 constants/opentelemetry_test.go create mode 100644 context_tracking_test.go create mode 100644 log/nil_test.go create mode 100644 metrics/metrics_test.go create mode 100644 redaction/sensitive_fields_test.go create mode 100644 system_test.go diff --git a/constants/opentelemetry_test.go b/constants/opentelemetry_test.go new file mode 100644 index 0000000..48ddfd3 --- /dev/null +++ b/constants/opentelemetry_test.go @@ -0,0 +1,22 @@ +//go:build unit + +package constants + +import ( + "strings" + "testing" + + "github.com/stretchr/testify/assert" +) + +func TestSanitizeMetricLabel(t *testing.T) { + t.Parallel() + + assert.Equal(t, "short", SanitizeMetricLabel("short")) + assert.Len(t, SanitizeMetricLabel(strings.Repeat("a", MaxMetricLabelLength+10)), MaxMetricLabelLength) + + multibyte := strings.Repeat("ç", MaxMetricLabelLength+10) + got := SanitizeMetricLabel(multibyte) + assert.Equal(t, MaxMetricLabelLength, len([]rune(got))) + assert.Equal(t, strings.Repeat("ç", MaxMetricLabelLength), got) +} diff --git a/context_tracking_test.go b/context_tracking_test.go new file mode 100644 index 0000000..a3ec77d --- /dev/null +++ b/context_tracking_test.go @@ -0,0 +1,82 @@ +//go:build unit + +package observability + +import ( + "context" + "testing" + + "github.com/LerianStudio/lib-observability/log" + "github.com/LerianStudio/lib-observability/metrics" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel" + "go.opentelemetry.io/otel/attribute" +) + +func TestContextTrackingComponents(t *testing.T) { + t.Parallel() + + logger := log.NewNop() + tracer := otel.Tracer("test") + factory := metrics.NewNopFactory() + + ctx := ContextWithLogger(nil, logger) + ctx = ContextWithTracer(ctx, tracer) + ctx = ContextWithMetricFactory(ctx, factory) + ctx = ContextWithHeaderID(ctx, " request-1 ") + + gotLogger, gotTracer, gotHeaderID, gotFactory := NewTrackingFromContext(ctx) + assert.Same(t, logger, gotLogger) + assert.Equal(t, tracer, gotTracer) + assert.Equal(t, "request-1", gotHeaderID) + assert.Same(t, factory, gotFactory) + assert.Same(t, logger, NewLoggerFromContext(ctx)) +} + +func TestContextTrackingDefaults(t *testing.T) { + t.Parallel() + + logger, tracer, headerID, factory := NewTrackingFromContext(nil) + require.NotNil(t, logger) + require.NotNil(t, tracer) + require.NotEmpty(t, headerID) + require.NotNil(t, factory) + assert.NotNil(t, NewLoggerFromContext(context.Background())) + assert.NotNil(t, resolveMetricFactory(nil)) + assert.NotNil(t, newDefaultTrackingComponents().MetricFactory) +} + +func TestContextTrackingFallbacksFromEmptyContextValue(t *testing.T) { + t.Parallel() + + ctx := context.WithValue(context.Background(), ContextKey, &ContextValue{ + HeaderID: " ", + }) + + logger, tracer, headerID, factory := NewTrackingFromContext(ctx) + assert.NotNil(t, logger) + assert.NotNil(t, tracer) + assert.NotEmpty(t, headerID) + assert.NotNil(t, factory) +} + +func TestContextAttributesAreCopied(t *testing.T) { + t.Parallel() + + ctx := ContextWithSpanAttributes(context.Background(), attribute.String("tenant.id", "tenant-1")) + attrs := AttributesFromContext(ctx) + require.Len(t, attrs, 1) + attrs[0] = attribute.String("tenant.id", "mutated") + + assert.Equal(t, "tenant-1", AttributesFromContext(ctx)[0].Value.AsString()) + + child := ContextWithSpanAttributes(ctx, attribute.String("region", "br")) + assert.Len(t, AttributesFromContext(ctx), 1) + assert.Len(t, AttributesFromContext(child), 2) + + replaced := ReplaceAttributes(child) + assert.Empty(t, AttributesFromContext(replaced)) + assert.Nil(t, AttributesFromContext(nil)) + assert.Same(t, ctx, ContextWithSpanAttributes(ctx)) +} diff --git a/log/nil_test.go b/log/nil_test.go new file mode 100644 index 0000000..828156d --- /dev/null +++ b/log/nil_test.go @@ -0,0 +1,24 @@ +//go:build unit + +package log + +import ( + "context" + "testing" + + "github.com/stretchr/testify/assert" +) + +func TestNopLoggerMethods(t *testing.T) { + t.Parallel() + + logger := NewNop() + logger.Log(context.Background(), LevelInfo, "ignored", String("k", "v")) + assert.Same(t, logger, logger.With(String("child", "value"))) + assert.Same(t, logger, logger.WithGroup("group")) + assert.False(t, logger.Enabled(LevelError)) + assert.False(t, logger.Enabled(LevelWarn)) + assert.False(t, logger.Enabled(LevelInfo)) + assert.False(t, logger.Enabled(LevelDebug)) + assert.NoError(t, logger.Sync(context.Background())) +} diff --git a/metrics/metrics_test.go b/metrics/metrics_test.go new file mode 100644 index 0000000..9a04334 --- /dev/null +++ b/metrics/metrics_test.go @@ -0,0 +1,256 @@ +//go:build unit + +package metrics + +import ( + "context" + "errors" + "testing" + + "github.com/LerianStudio/lib-observability/log" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" + "go.opentelemetry.io/otel/attribute" + "go.opentelemetry.io/otel/metric" + "go.opentelemetry.io/otel/metric/noop" +) + +func newTestFactory(t *testing.T) *MetricsFactory { + t.Helper() + + f, err := NewMetricsFactory(noop.NewMeterProvider().Meter("metrics-test"), log.NewNop()) + require.NoError(t, err) + + return f +} + +type cacheTestMeter struct { + metric.Meter + counter *cacheTestCounter + gauge *cacheTestGauge + histogram *cacheTestHistogram +} + +type cacheTestCounter struct{ metric.Int64Counter } +type cacheTestGauge struct{ metric.Int64Gauge } +type cacheTestHistogram struct{ metric.Int64Histogram } + +func newCacheTestFactory(t *testing.T) *MetricsFactory { + t.Helper() + + meter := noop.NewMeterProvider().Meter("metrics-cache-test") + counter, err := meter.Int64Counter("counter") + require.NoError(t, err) + gauge, err := meter.Int64Gauge("gauge") + require.NoError(t, err) + histogram, err := meter.Int64Histogram("histogram") + require.NoError(t, err) + + f, err := NewMetricsFactory(&cacheTestMeter{ + Meter: meter, + counter: &cacheTestCounter{Int64Counter: counter}, + gauge: &cacheTestGauge{Int64Gauge: gauge}, + histogram: &cacheTestHistogram{Int64Histogram: histogram}, + }, log.NewNop()) + require.NoError(t, err) + + return f +} + +func (m *cacheTestMeter) Int64Counter(string, ...metric.Int64CounterOption) (metric.Int64Counter, error) { + return m.counter, nil +} + +func (m *cacheTestMeter) Int64Gauge(string, ...metric.Int64GaugeOption) (metric.Int64Gauge, error) { + return m.gauge, nil +} + +func (m *cacheTestMeter) Int64Histogram(string, ...metric.Int64HistogramOption) (metric.Int64Histogram, error) { + return m.histogram, nil +} + +func TestNewMetricsFactory(t *testing.T) { + t.Parallel() + + f, err := NewMetricsFactory(noop.NewMeterProvider().Meter("metrics-test"), nil) + require.NoError(t, err) + require.NotNil(t, f) + + f, err = NewMetricsFactory(nil, nil) + require.Nil(t, f) + assert.ErrorIs(t, err, ErrNilMeter) +} + +func TestNewNopFactoryRecords(t *testing.T) { + t.Parallel() + + f := NewNopFactory() + require.NotNil(t, f) + + ctx := context.Background() + assert.NoError(t, f.RecordAccountCreated(ctx)) + assert.NoError(t, f.RecordTransactionProcessed(ctx)) + assert.NoError(t, f.RecordTransactionRouteCreated(ctx)) + assert.NoError(t, f.RecordOperationRouteCreated(ctx)) + assert.NoError(t, f.RecordSystemCPUUsage(ctx, 0)) + assert.NoError(t, f.RecordSystemCPUUsage(ctx, 100)) + assert.NoError(t, f.RecordSystemMemUsage(ctx, 42)) +} + +func TestMetricsFactoryNilReceiver(t *testing.T) { + t.Parallel() + + var f *MetricsFactory + ctx := context.Background() + + _, err := f.Counter(MetricAccountsCreated) + assert.ErrorIs(t, err, ErrNilFactory) + _, err = f.Gauge(MetricSystemCPUUsage) + assert.ErrorIs(t, err, ErrNilFactory) + _, err = f.Histogram(Metric{Name: "duration"}) + assert.ErrorIs(t, err, ErrNilFactory) + assert.ErrorIs(t, f.RecordAccountCreated(ctx), ErrNilFactory) + assert.ErrorIs(t, f.RecordTransactionProcessed(ctx), ErrNilFactory) + assert.ErrorIs(t, f.RecordTransactionRouteCreated(ctx), ErrNilFactory) + assert.ErrorIs(t, f.RecordOperationRouteCreated(ctx), ErrNilFactory) + assert.ErrorIs(t, f.RecordSystemCPUUsage(ctx, 50), ErrNilFactory) + assert.ErrorIs(t, f.RecordSystemMemUsage(ctx, 50), ErrNilFactory) +} + +func TestCounterBuilder(t *testing.T) { + t.Parallel() + + ctx := context.Background() + f := newTestFactory(t) + b, err := f.Counter(Metric{Name: "counter_test", Description: "desc", Unit: "1"}) + require.NoError(t, err) + + withLabels := b.WithLabels(map[string]string{"tenant": "t1"}) + require.NotSame(t, b, withLabels) + assert.Len(t, withLabels.attrs, 1) + assert.Empty(t, b.attrs) + + withAttrs := withLabels.WithAttributes(attribute.String("region", "br")) + assert.Len(t, withAttrs.attrs, 2) + assert.NoError(t, withAttrs.Add(ctx, 2)) + assert.NoError(t, withAttrs.AddOne(ctx)) + assert.ErrorIs(t, withAttrs.Add(ctx, -1), ErrNegativeCounterValue) + + var nilBuilder *CounterBuilder + assert.Nil(t, nilBuilder.WithLabels(map[string]string{"x": "y"})) + assert.Nil(t, nilBuilder.WithAttributes(attribute.String("x", "y"))) + assert.ErrorIs(t, nilBuilder.Add(ctx, 1), ErrNilCounterBuilder) + assert.ErrorIs(t, nilBuilder.AddOne(ctx), ErrNilCounterBuilder) + assert.ErrorIs(t, (&CounterBuilder{}).Add(ctx, 1), ErrNilCounter) +} + +func TestGaugeBuilder(t *testing.T) { + t.Parallel() + + ctx := context.Background() + f := newTestFactory(t) + b, err := f.Gauge(Metric{Name: "gauge_test", Description: "desc", Unit: "1"}) + require.NoError(t, err) + + withLabels := b.WithLabels(map[string]string{"tenant": "t1"}) + withAttrs := withLabels.WithAttributes(attribute.String("region", "br")) + assert.Len(t, withAttrs.attrs, 2) + assert.NoError(t, withAttrs.Set(ctx, 42)) + + var nilBuilder *GaugeBuilder + assert.Nil(t, nilBuilder.WithLabels(map[string]string{"x": "y"})) + assert.Nil(t, nilBuilder.WithAttributes(attribute.String("x", "y"))) + assert.ErrorIs(t, nilBuilder.Set(ctx, 1), ErrNilGaugeBuilder) + assert.ErrorIs(t, (&GaugeBuilder{}).Set(ctx, 1), ErrNilGauge) +} + +func TestHistogramBuilder(t *testing.T) { + t.Parallel() + + ctx := context.Background() + f := newTestFactory(t) + b, err := f.Histogram(Metric{Name: "request_duration", Description: "desc", Unit: "ms"}) + require.NoError(t, err) + + withLabels := b.WithLabels(map[string]string{"tenant": "t1"}) + withAttrs := withLabels.WithAttributes(attribute.String("region", "br")) + assert.Len(t, withAttrs.attrs, 2) + assert.NoError(t, withAttrs.Record(ctx, 123)) + + var nilBuilder *HistogramBuilder + assert.Nil(t, nilBuilder.WithLabels(map[string]string{"x": "y"})) + assert.Nil(t, nilBuilder.WithAttributes(attribute.String("x", "y"))) + assert.ErrorIs(t, nilBuilder.Record(ctx, 1), ErrNilHistogramBuilder) + assert.ErrorIs(t, (&HistogramBuilder{}).Record(ctx, 1), ErrNilHistogram) +} + +func TestMetricsFactoryCachesAndInvalidCacheEntries(t *testing.T) { + t.Parallel() + + f := newCacheTestFactory(t) + + c1, err := f.getOrCreateCounter(Metric{Name: "cached_counter"}) + require.NoError(t, err) + c2, err := f.getOrCreateCounter(Metric{Name: "cached_counter"}) + require.NoError(t, err) + assert.Same(t, c1, c2) + + g1, err := f.getOrCreateGauge(Metric{Name: "cached_gauge"}) + require.NoError(t, err) + g2, err := f.getOrCreateGauge(Metric{Name: "cached_gauge"}) + require.NoError(t, err) + assert.Same(t, g1, g2) + + h1, err := f.getOrCreateHistogram(Metric{Name: "cached_histogram", Buckets: []float64{5, 1, 2}}) + require.NoError(t, err) + h2, err := f.getOrCreateHistogram(Metric{Name: "cached_histogram", Buckets: []float64{2, 5, 1}}) + require.NoError(t, err) + assert.Same(t, h1, h2) + + f.counters.Store("bad_counter", "wrong") + _, err = f.getOrCreateCounter(Metric{Name: "bad_counter"}) + assert.ErrorContains(t, err, "invalid type") + + f.gauges.Store("bad_gauge", "wrong") + _, err = f.getOrCreateGauge(Metric{Name: "bad_gauge"}) + assert.ErrorContains(t, err, "invalid type") + + f.histograms.Store("bad_histogram", "wrong") + _, err = f.getOrCreateHistogram(Metric{Name: "bad_histogram"}) + assert.ErrorContains(t, err, "invalid type") +} + +func TestMetricHelpersAndOptions(t *testing.T) { + t.Parallel() + + assert.Equal(t, DefaultLatencyBuckets, selectDefaultBuckets("http_latency_seconds")) + assert.Equal(t, DefaultLatencyBuckets, selectDefaultBuckets("job_duration_seconds")) + assert.Equal(t, DefaultLatencyBuckets, selectDefaultBuckets("queue_time_seconds")) + assert.Equal(t, DefaultAccountBuckets, selectDefaultBuckets("account_created")) + assert.Equal(t, DefaultTransactionBuckets, selectDefaultBuckets("transaction_processed")) + assert.Equal(t, DefaultLatencyBuckets, selectDefaultBuckets("unknown_metric")) + + assert.Equal(t, "hist:1,2,5", histogramCacheKey("hist", []float64{5, 1, 2})) + assert.Equal(t, "hist", histogramCacheKey("hist", nil)) + + f := newTestFactory(t) + assert.Len(t, f.addCounterOptions(Metric{Description: "d", Unit: "1"}), 2) + assert.Len(t, f.addGaugeOptions(Metric{Description: "d", Unit: "1"}), 2) + assert.Len(t, f.addHistogramOptions(Metric{Description: "d", Unit: "ms", Buckets: []float64{1}}), 3) +} + +func TestRecordSystemUsageValidatesRange(t *testing.T) { + t.Parallel() + + f := newTestFactory(t) + ctx := context.Background() + + for _, err := range []error{ + f.RecordSystemCPUUsage(ctx, -1), + f.RecordSystemCPUUsage(ctx, 101), + f.RecordSystemMemUsage(ctx, -1), + f.RecordSystemMemUsage(ctx, 101), + } { + assert.True(t, errors.Is(err, ErrPercentageOutOfRange)) + } +} diff --git a/redaction/sensitive_fields_test.go b/redaction/sensitive_fields_test.go new file mode 100644 index 0000000..4e9fd01 --- /dev/null +++ b/redaction/sensitive_fields_test.go @@ -0,0 +1,76 @@ +//go:build unit + +package redaction + +import ( + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestDefaultSensitiveFieldsReturnsCopy(t *testing.T) { + t.Parallel() + + fields := DefaultSensitiveFields() + require.NotEmpty(t, fields) + fields[0] = "mutated" + + assert.NotEqual(t, "mutated", DefaultSensitiveFields()[0]) +} + +func TestDefaultSensitiveFieldsMapReturnsCopy(t *testing.T) { + t.Parallel() + + fields := DefaultSensitiveFieldsMap() + require.True(t, fields["password"]) + fields["password"] = false + fields["custom"] = true + + next := DefaultSensitiveFieldsMap() + assert.True(t, next["password"]) + assert.False(t, next["custom"]) +} + +func TestIsSensitiveField(t *testing.T) { + t.Parallel() + + cases := []struct { + name string + field string + extra []string + want bool + }{ + {name: "exact default", field: "password", want: true}, + {name: "case insensitive", field: "PassWord", want: true}, + {name: "camel case normalized", field: "sessionToken", want: true}, + {name: "acronym camel case normalized", field: "APIKey", want: true}, + {name: "short token word boundary", field: "api_key_hash", want: true}, + {name: "short token avoids substring", field: "monkey", want: false}, + {name: "long token word boundary", field: "customer_email_hash", want: true}, + {name: "extra exact", field: "tenantSecret", extra: []string{"tenantSecret"}, want: true}, + {name: "extra word boundary", field: "billing_custom_field", extra: []string{"custom"}, want: true}, + {name: "safe field", field: "publicIdentifier", want: false}, + } + + for _, tt := range cases { + t.Run(tt.name, func(t *testing.T) { + t.Parallel() + assert.Equal(t, tt.want, IsSensitiveField(tt.field, tt.extra...)) + }) + } +} + +func TestMatchesWordBoundary(t *testing.T) { + t.Parallel() + + assert.False(t, matchesWordBoundary("anything", "")) + assert.False(t, matchesWordBoundary("customeremail", "email")) + assert.True(t, matchesWordBoundary("customer_email", "email")) + assert.True(t, matchesWordBoundary("email_address", "email")) + assert.True(t, matchesWordBoundary("customer-email-value", "email")) + assert.False(t, isAlphanumeric('-')) + assert.True(t, isAlphanumeric('a')) + assert.True(t, isAlphanumeric('Z')) + assert.True(t, isAlphanumeric('9')) +} diff --git a/system_test.go b/system_test.go new file mode 100644 index 0000000..6970981 --- /dev/null +++ b/system_test.go @@ -0,0 +1,21 @@ +//go:build unit + +package observability + +import ( + "context" + "testing" + + "github.com/LerianStudio/lib-observability/metrics" + "github.com/stretchr/testify/assert" +) + +func TestSystemUsageHelpers(t *testing.T) { + t.Parallel() + + ctx := context.Background() + assert.NotPanics(t, func() { GetCPUUsage(ctx, nil) }) + assert.NotPanics(t, func() { GetMemUsage(ctx, nil) }) + assert.NotPanics(t, func() { GetCPUUsage(ctx, metrics.NewNopFactory()) }) + assert.NotPanics(t, func() { GetMemUsage(ctx, metrics.NewNopFactory()) }) +} From 13312f2f69fe24bd3e11d4eea2dd5e9c5295661f Mon Sep 17 00:00:00 2001 From: "Gandalf, the White" Date: Fri, 15 May 2026 20:50:32 -0300 Subject: [PATCH 26/26] fix: address stable release review feedback Requested-by: @qnen --- .github/workflows/go-combined-analysis.yml | 2 +- .releaserc.yml | 22 +++--- CLAUDE.md | 6 +- README.md | 6 +- constants/headers.go | 2 +- go.mod | 2 +- middleware/logging.go | 6 +- middleware/logging_obfuscation.go | 6 +- middleware/telemetry.go | 58 +++++++++++++- middleware/telemetry_route_test.go | 2 - runtime/error_reporter.go | 8 +- runtime/helpers_test.go | 7 +- runtime/recover.go | 20 +++-- runtime/recover_test.go | 6 +- runtime/tracing.go | 4 + system.go | 8 +- tracing/otel.go | 27 +------ tracing/otel_test.go | 89 +--------------------- zap/zap.go | 10 +-- 19 files changed, 128 insertions(+), 163 deletions(-) diff --git a/.github/workflows/go-combined-analysis.yml b/.github/workflows/go-combined-analysis.yml index 8e9227a..044c479 100644 --- a/.github/workflows/go-combined-analysis.yml +++ b/.github/workflows/go-combined-analysis.yml @@ -24,7 +24,7 @@ jobs: with: runner_type: "blacksmith-4vcpu-ubuntu-2404" app_name_prefix: "lib-observability" - go_version: "1.25.9" + go_version: "1.25.10" golangci_lint_version: "v2.11.2" golangci_lint_args: "--timeout=5m" coverage_threshold: 80 diff --git a/.releaserc.yml b/.releaserc.yml index 0d67e8d..eadae6b 100644 --- a/.releaserc.yml +++ b/.releaserc.yml @@ -8,16 +8,16 @@ plugins: ] }, releaseRules: [ - { type: "feat", release: "minor" }, - { type: "perf", release: "minor" }, - { type: "build", release: "minor" }, - { type: "chore", release: "patch" }, - { type: "ci", release: "patch" }, - { type: "test", release: "patch" }, - { type: "fix", release: "patch" }, - { type: "refactor", release: "minor" }, - { type: "docs", release: "patch" }, - { breaking: true, release: "major" } + {type: "feat", release: "minor"}, + {type: "perf", release: "minor"}, + {type: "build", release: "minor"}, + {type: "chore", release: "patch"}, + {type: "ci", release: "patch"}, + {type: "test", release: "patch"}, + {type: "fix", release: "patch"}, + {type: "refactor", release: "minor"}, + {type: "docs", release: "patch"}, + {breaking: true, release: "major"} ] }] @@ -30,7 +30,7 @@ plugins: # Plugin to publish the CHANGELOG.md as an asset in the GitHub release - ["@semantic-release/github", { assets: [ - { path: "CHANGELOG.md", label: "Changelog" } + {path: "CHANGELOG.md", label: "Changelog"} ], successComment: false, failCommentCondition: false, diff --git a/CLAUDE.md b/CLAUDE.md index f5197de..12ec710 100644 --- a/CLAUDE.md +++ b/CLAUDE.md @@ -3,7 +3,7 @@ ## What this repo is `github.com/LerianStudio/lib-observability` — standalone Go library for observability/telemetry, -extracted from `lib-commons` (`../lib-commons`). Go 1.25.9. +extracted from `lib-commons` (`../lib-commons`). Go 1.25.10. ## Architecture decisions (non-negotiable) @@ -14,8 +14,8 @@ extracted from `lib-commons` (`../lib-commons`). Go 1.25.9. | Context carriers | Root `package observability` (`observability.go`) | Shared by all packages; not a tracing concern | | Sensitive fields | `redaction/` package | Named by purpose; `IsSensitiveField(name string, extra ...string) bool` variadic | | HTTP middleware | `middleware/` package | Separate from core tracing | -| Streaming telemetry | `streaming/` package | Pure OTEL — no franz-go/kafka dep | -| lib-commons dependency | **NEVER import lib-commons** | lib-commons will depend on lib-observability — circular | +| Streaming telemetry | Stays in `lib-commons` | Streaming has domain/transport coupling outside this library | +| lib-commons dependency | Avoid imports except compatibility-only streaming references | lib-commons will depend on lib-observability for shared observability | ## Source of truth for migration diff --git a/README.md b/README.md index 5c88d30..7d62742 100644 --- a/README.md +++ b/README.md @@ -4,11 +4,11 @@ ## What's in this library -### Telemetry bootstrap and tracing (`opentelemetry`) +### Telemetry bootstrap and tracing (`tracing`) Full OpenTelemetry SDK lifecycle management: OTLP/gRPC exporter setup for traces, metrics, and logs; `TracerProvider`, `MeterProvider`, and `LoggerProvider` construction via a single `NewTelemetry(cfg)` call; global provider opt-in with `ApplyGlobals()`; and graceful shutdown with `ShutdownTelemetry()`. Includes trace context propagation for HTTP, gRPC, and message queues (Kafka/Redpanda/RabbitMQ), span error/event recording helpers, struct-to-attribute conversion with automatic sensitive field redaction, and custom `SpanProcessor` implementations for context-carried attribute injection. -### Metrics (`opentelemetry/metrics`) +### Metrics (`metrics`) Thread-safe `MetricsFactory` with lazy instrument caching and a fluent builder API for Counters, Gauges, and Histograms. Provides `.WithLabels()` / `.WithAttributes()` chaining followed by `.Add()`, `.Set()`, or `.Record()` — all with explicit error returns. Includes pre-configured domain metric recorders (accounts, transactions, routes, operations) and system infrastructure gauges (CPU, memory). Ships a `NewNopFactory()` for tests and disabled-metrics environments. @@ -30,7 +30,7 @@ A context-scoped `Asserter` that validates domain invariants at runtime without ### Observability constants and context carriers -Shared OTEL attribute prefixes, metric names, event names, header constants (`Traceparent`, `Tracestate`), label sanitization (`SanitizeMetricLabel`), and sensitive field detection for cross-cutting redaction. Context carrier helpers (`ContextWithTracer`, `ContextWithMetricFactory`, `ContextWithLogger`, `ContextWithSpanAttributes`) for propagating observability primitives through `context.Context`. +Shared OTEL attribute prefixes, metric names, event names, header constants (`traceparent`, `Traceparent`, `Tracestate`), label sanitization (`SanitizeMetricLabel`), and sensitive field detection for cross-cutting redaction. Context carrier helpers (`ContextWithTracer`, `ContextWithMetricFactory`, `ContextWithLogger`, `ContextWithSpanAttributes`) for propagating observability primitives through `context.Context`. ### Redaction engine diff --git a/constants/headers.go b/constants/headers.go index 338ff75..7835ed0 100644 --- a/constants/headers.go +++ b/constants/headers.go @@ -2,7 +2,7 @@ package constants const ( // HeaderTraceparent is the W3C traceparent header key. - HeaderTraceparent = "Traceparent" + HeaderTraceparent = "traceparent" // HeaderTraceparentPascal is the PascalCase variant of the Traceparent header for gRPC metadata. HeaderTraceparentPascal = "Traceparent" // HeaderTracestatePascal is the PascalCase variant of the Tracestate header for gRPC metadata. diff --git a/go.mod b/go.mod index 7f826f4..9e1b461 100644 --- a/go.mod +++ b/go.mod @@ -1,6 +1,6 @@ module github.com/LerianStudio/lib-observability -go 1.25.9 +go 1.25.10 require ( github.com/gofiber/fiber/v2 v2.52.13 diff --git a/middleware/logging.go b/middleware/logging.go index b37bf45..b9e8179 100644 --- a/middleware/logging.go +++ b/middleware/logging.go @@ -296,7 +296,7 @@ func WithGrpcLogging(opts ...LogMiddlewareOption) grpc.UnaryServerInterceptor { func handleJSONBody(bodyBytes []byte) string { var bodyData any if err := json.Unmarshal(bodyBytes, &bodyData); err != nil { - return string(bodyBytes) + return redactedBody } switch v := bodyData.(type) { @@ -305,12 +305,12 @@ func handleJSONBody(bodyBytes []byte) string { case []any: obfuscateSliceRecursively(v, 0) default: - return string(bodyBytes) + return redactedBody } updatedBody, err := json.Marshal(bodyData) if err != nil { - return string(bodyBytes) + return redactedBody } return string(updatedBody) diff --git a/middleware/logging_obfuscation.go b/middleware/logging_obfuscation.go index efbbf98..5095190 100644 --- a/middleware/logging_obfuscation.go +++ b/middleware/logging_obfuscation.go @@ -9,6 +9,8 @@ import ( "github.com/gofiber/fiber/v2" ) +const redactedBody = "[REDACTED]" + func getBodyObfuscatedString(c *fiber.Ctx, bodyBytes []byte) string { contentType := strings.ToLower(c.Get(headerContentType)) @@ -20,7 +22,7 @@ func getBodyObfuscatedString(c *fiber.Ctx, bodyBytes []byte) string { case strings.Contains(contentType, "multipart/form-data"): return handleMultipartBody(c) default: - return string(bodyBytes) + return redactedBody } } @@ -62,7 +64,7 @@ func obfuscateSliceRecursively(data []any, depth int) { func handleURLEncodedBody(bodyBytes []byte) string { formData, err := url.ParseQuery(string(bodyBytes)) if err != nil { - return string(bodyBytes) + return redactedBody } updatedBody := url.Values{} diff --git a/middleware/telemetry.go b/middleware/telemetry.go index 9f7c7d3..9d47fe3 100644 --- a/middleware/telemetry.go +++ b/middleware/telemetry.go @@ -8,6 +8,7 @@ import ( "fmt" "reflect" "strings" + "sync" observability "github.com/LerianStudio/lib-observability" "github.com/LerianStudio/lib-observability/tracing" @@ -34,6 +35,43 @@ const ( // ErrContextNotFound is returned when a required Fiber context is nil. var ErrContextNotFound = errors.New("fiber context not found") +type spanEndStateKey struct{} + +type spanEndState struct { + span trace.Span + once sync.Once +} + +func newSpanEndState(span trace.Span) *spanEndState { + return &spanEndState{span: span} +} + +func (s *spanEndState) End() { + if s == nil || s.span == nil { + return + } + + s.once.Do(func() { s.span.End() }) +} + +func contextWithSpanEndState(ctx context.Context, state *spanEndState) context.Context { + if ctx == nil { + ctx = context.Background() + } + + return context.WithValue(ctx, spanEndStateKey{}, state) +} + +func spanEndStateFromContext(ctx context.Context) *spanEndState { + if ctx == nil { + return nil + } + + state, _ := ctx.Value(spanEndStateKey{}).(*spanEndState) + + return state +} + // TelemetryMiddleware wraps HTTP and gRPC handlers with tracing and metrics setup. type TelemetryMiddleware struct { Telemetry *tracing.Telemetry @@ -96,10 +134,13 @@ func (tm *TelemetryMiddleware) WithTelemetry(tl *tracing.Telemetry, excludedRout } ctx, span := tracer.Start(traceCtx, routePathWithMethod, trace.WithSpanKind(trace.SpanKindServer)) - defer span.End() + endState := newSpanEndState(span) + + defer endState.End() ctx = observability.ContextWithTracer(ctx, tracer) ctx = observability.ContextWithMetricFactory(ctx, effectiveTelemetry.MetricsFactory) + ctx = contextWithSpanEndState(ctx, endState) c.SetUserContext(ctx) err := tm.collectMetrics(ctx) @@ -144,6 +185,11 @@ func (tm *TelemetryMiddleware) EndTracingSpans(c *fiber.Ctx) error { endCtx = originalCtx } + if state := spanEndStateFromContext(endCtx); state != nil { + state.End() + return err + } + if endCtx != nil { trace.SpanFromContext(endCtx).End() } @@ -199,10 +245,13 @@ func (tm *TelemetryMiddleware) WithTelemetryInterceptor(tl *tracing.Telemetry) g } ctx, span := tracer.Start(traceCtx, methodName, trace.WithSpanKind(trace.SpanKindServer)) - defer span.End() + endState := newSpanEndState(span) + + defer endState.End() ctx = observability.ContextWithTracer(ctx, tracer) ctx = observability.ContextWithMetricFactory(ctx, effectiveTelemetry.MetricsFactory) + ctx = contextWithSpanEndState(ctx, endState) err := tm.collectMetrics(ctx) if err != nil { @@ -234,6 +283,11 @@ func (tm *TelemetryMiddleware) EndTracingSpansInterceptor() grpc.UnaryServerInte handler grpc.UnaryHandler, ) (any, error) { resp, err := handler(ctx, req) + if state := spanEndStateFromContext(ctx); state != nil { + state.End() + return resp, err + } + trace.SpanFromContext(ctx).End() return resp, err diff --git a/middleware/telemetry_route_test.go b/middleware/telemetry_route_test.go index 74cf44c..0cc587c 100644 --- a/middleware/telemetry_route_test.go +++ b/middleware/telemetry_route_test.go @@ -16,8 +16,6 @@ import ( ) func TestWithTelemetry_UnmatchedRouteDoesNotPanic(t *testing.T) { - t.Parallel() - tp, spanRecorder := setupTestTracer(t) defer func() { _ = tp.Shutdown(context.Background()) }() diff --git a/runtime/error_reporter.go b/runtime/error_reporter.go index 9ecd530..554eebb 100644 --- a/runtime/error_reporter.go +++ b/runtime/error_reporter.go @@ -129,7 +129,13 @@ func reportPanicToErrorService( tags["stack_trace"] = stackStr } - reporter.CaptureException(ctx, err, tags) + func() { + defer func() { + _ = recover() + }() + + reporter.CaptureException(ctx, err, tags) + }() } // panicError wraps a panic value as an error for reporting. diff --git a/runtime/helpers_test.go b/runtime/helpers_test.go index e882ba1..3644b62 100644 --- a/runtime/helpers_test.go +++ b/runtime/helpers_test.go @@ -4,6 +4,7 @@ package runtime import ( "context" + "strings" "sync" "sync/atomic" "time" @@ -27,13 +28,15 @@ func newTestLogger() *testLogger { } } -func (logger *testLogger) Log(_ context.Context, _ log.Level, msg string, _ ...log.Field) { +func (logger *testLogger) Log(_ context.Context, lvl log.Level, msg string, _ ...log.Field) { logger.mu.Lock() defer logger.mu.Unlock() logger.errorCalls = append(logger.errorCalls, msg) logger.lastMessage = msg - logger.panicLogged.Store(true) + if lvl == log.LevelError && strings.Contains(strings.ToLower(msg), "panic") { + logger.panicLogged.Store(true) + } // Signal that logging occurred (non-blocking) select { diff --git a/runtime/recover.go b/runtime/recover.go index 6950257..6920762 100644 --- a/runtime/recover.go +++ b/runtime/recover.go @@ -50,7 +50,7 @@ func RecoverAndLog(logger Logger, name string) { func RecoverAndLogWithContext(ctx context.Context, logger Logger, component, name string) { if r := recover(); r != nil { stack := debug.Stack() - logPanicWithStack(logger, name, r, stack) + logPanicWithStack(ctx, logger, name, r, stack) recordPanicObservability(ctx, r, stack, component, name) } } @@ -83,7 +83,7 @@ func RecoverAndCrash(logger Logger, name string) { func RecoverAndCrashWithContext(ctx context.Context, logger Logger, component, name string) { if r := recover(); r != nil { stack := debug.Stack() - logPanicWithStack(logger, name, r, stack) + logPanicWithStack(ctx, logger, name, r, stack) recordPanicObservability(ctx, r, stack, component, name) panic(r) } @@ -136,7 +136,7 @@ func RecoverWithPolicyAndContext( ) { if recovered := recover(); recovered != nil { stack := debug.Stack() - logPanicWithStack(logger, name, recovered, stack) + logPanicWithStack(ctx, logger, name, recovered, stack) recordPanicObservability(ctx, recovered, stack, component, name) if policy == CrashProcess { @@ -149,19 +149,23 @@ func RecoverWithPolicyAndContext( // This is the legacy function that captures stack internally. func logPanic(logger Logger, name string, panicValue any) { stack := debug.Stack() - logPanicWithStack(logger, name, panicValue, stack) + logPanicWithStack(context.Background(), logger, name, panicValue, stack) } // logPanicWithStack logs the panic with a pre-captured stack trace. // In production mode, panic values are redacted to prevent leaking sensitive data. -func logPanicWithStack(logger Logger, name string, panicValue any, stack []byte) { +func logPanicWithStack(ctx context.Context, logger Logger, name string, panicValue any, stack []byte) { if logger == nil { // Last resort fallback - should never happen in production return } + if ctx == nil { + ctx = context.Background() + } + if IsProductionMode() { - logger.Log(context.Background(), log.LevelError, + logger.Log(ctx, log.LevelError, "panic recovered", log.String("source", name), log.String("value", redactedPanicMsg), @@ -170,7 +174,7 @@ func logPanicWithStack(logger Logger, name string, panicValue any, stack []byte) return } - logger.Log(context.Background(), log.LevelError, + logger.Log(ctx, log.LevelError, "panic recovered", log.String("source", name), log.Any("value", panicValue), @@ -224,6 +228,6 @@ func HandlePanicValue(ctx context.Context, logger Logger, panicValue any, compon } stack := debug.Stack() - logPanicWithStack(logger, name, panicValue, stack) + logPanicWithStack(ctx, logger, name, panicValue, stack) recordPanicObservability(ctx, panicValue, stack, component, name) } diff --git a/runtime/recover_test.go b/runtime/recover_test.go index b02a446..bae8064 100644 --- a/runtime/recover_test.go +++ b/runtime/recover_test.go @@ -21,7 +21,7 @@ func TestLogPanicWithStack_NilLogger(t *testing.T) { t.Parallel() require.NotPanics(t, func() { - logPanicWithStack(nil, "test", "panic value", []byte("stack trace")) + logPanicWithStack(context.Background(), nil, "test", "panic value", []byte("stack trace")) }) } @@ -32,7 +32,7 @@ func TestLogPanicWithStack_ValidLogger(t *testing.T) { logger := newTestLogger() stack := []byte("goroutine 1 [running]:\nmain.main()\n\t/path/to/file.go:10") - logPanicWithStack(logger, "test-handler", "test panic", stack) + logPanicWithStack(context.Background(), logger, "test-handler", "test panic", stack) assert.True(t, logger.wasPanicLogged()) assert.NotEmpty(t, logger.errorCalls) @@ -87,7 +87,7 @@ func TestLogPanicWithStack_DifferentPanicTypes(t *testing.T) { logger := newTestLogger() require.NotPanics(t, func() { - logPanicWithStack(logger, "test-handler", tt.panicValue, []byte("stack")) + logPanicWithStack(context.Background(), logger, "test-handler", tt.panicValue, []byte("stack")) }) }) } diff --git a/runtime/tracing.go b/runtime/tracing.go index 212d826..6b13690 100644 --- a/runtime/tracing.go +++ b/runtime/tracing.go @@ -101,6 +101,10 @@ func recordPanicToSpanInternal( stack []byte, component, goroutineName string, ) { + if ctx == nil { + return + } + span := trace.SpanFromContext(ctx) if !span.IsRecording() { return diff --git a/system.go b/system.go index 06c74aa..155adf8 100644 --- a/system.go +++ b/system.go @@ -18,6 +18,7 @@ func GetCPUUsage(ctx context.Context, factory *metrics.MetricsFactory) { out, err := cpu.Percent(100*time.Millisecond, false) if err != nil { logger.Log(ctx, log.LevelWarn, "error getting CPU usage", log.Err(err)) + return } var percentageCPU int64 = 0 @@ -40,15 +41,14 @@ func GetCPUUsage(ctx context.Context, factory *metrics.MetricsFactory) { func GetMemUsage(ctx context.Context, factory *metrics.MetricsFactory) { logger := NewLoggerFromContext(ctx) - var percentageMem int64 = 0 - out, err := mem.VirtualMemory() if err != nil { logger.Log(ctx, log.LevelWarn, "error getting memory info", log.Err(err)) - } else { - percentageMem = int64(out.UsedPercent) + return } + percentageMem := int64(out.UsedPercent) + if factory == nil { logger.Log(ctx, log.LevelWarn, "metrics factory is nil, skipping memory usage recording") return diff --git a/tracing/otel.go b/tracing/otel.go index cb2aa66..2c443e9 100644 --- a/tracing/otel.go +++ b/tracing/otel.go @@ -100,7 +100,6 @@ func NewTelemetry(cfg TelemetryConfig) (*Telemetry, error) { } normalizeEndpoint(&cfg) - normalizeEndpointEnvVars() if cfg.EnableTelemetry && strings.TrimSpace(cfg.CollectorExporterEndpoint) == "" { return handleEmptyEndpoint(cfg) @@ -151,27 +150,7 @@ func normalizeEndpoint(cfg *TelemetryConfig) { case strings.HasPrefix(ep, "https://"): cfg.CollectorExporterEndpoint = strings.TrimPrefix(ep, "https://") default: - // No scheme — assume insecure (common in k8s internal comms). - cfg.InsecureExporter = true - } -} - -// normalizeEndpointEnvVars ensures OTEL exporter endpoint environment variables -// contain a URL scheme. The OTEL SDK's envconfig reads these via url.Parse(), -// which fails on bare "host:port" values. Adding "http://" prevents noisy -// "parse url" errors from the SDK's internal logger. -func normalizeEndpointEnvVars() { - for _, key := range []string{ - "OTEL_EXPORTER_OTLP_ENDPOINT", - "OTEL_EXPORTER_OTLP_TRACES_ENDPOINT", - "OTEL_EXPORTER_OTLP_METRICS_ENDPOINT", - } { - v := strings.TrimSpace(os.Getenv(key)) - if v == "" || strings.HasPrefix(v, "http://") || strings.HasPrefix(v, "https://") { - continue - } - - _ = os.Setenv(key, "http://"+v) + cfg.CollectorExporterEndpoint = ep } } @@ -562,11 +541,11 @@ func HandleSpanError(span trace.Span, message string, err error) { // Build status message: avoid malformed ": " when message is empty statusMsg := sanitizeSpanMessage(err.Error()) if message != "" { - statusMsg = message + ": " + statusMsg + statusMsg = sanitizeSpanMessage(message + ": " + statusMsg) } span.SetStatus(codes.Error, statusMsg) - span.RecordError(err) + span.RecordError(errors.New(statusMsg)) } // SetSpanAttributesFromValue flattens a value and sets resulting attributes on a span. diff --git a/tracing/otel_test.go b/tracing/otel_test.go index 4934cd1..f96114a 100644 --- a/tracing/otel_test.go +++ b/tracing/otel_test.go @@ -208,10 +208,10 @@ func TestNewTelemetry_EndpointNormalization(t *testing.T) { wantInsecure: false, }, { - name: "no scheme defaults to insecure", + name: "no scheme preserves insecure default", endpoint: "otel-collector:4317", wantEndpoint: "otel-collector:4317", - wantInsecure: true, + wantInsecure: false, }, { name: "https with explicit insecure override preserved", @@ -249,91 +249,6 @@ func TestNewTelemetry_EndpointNormalization(t *testing.T) { } } -// =========================================================================== -// 1c. Endpoint environment variable normalization -// =========================================================================== - -func TestNormalizeEndpointEnvVars(t *testing.T) { - envKeys := []string{ - "OTEL_EXPORTER_OTLP_ENDPOINT", - "OTEL_EXPORTER_OTLP_TRACES_ENDPOINT", - "OTEL_EXPORTER_OTLP_METRICS_ENDPOINT", - } - - tests := []struct { - name string - value string - set bool - expected string - }{ - { - name: "bare host:port gets http scheme", - value: "10.10.0.202:4317", - set: true, - expected: "http://10.10.0.202:4317", - }, - { - name: "hostname:port gets http scheme", - value: "otel-collector:4317", - set: true, - expected: "http://otel-collector:4317", - }, - { - name: "http scheme preserved", - value: "http://otel-collector:4317", - set: true, - expected: "http://otel-collector:4317", - }, - { - name: "https scheme preserved", - value: "https://otel-collector:4317", - set: true, - expected: "https://otel-collector:4317", - }, - { - name: "whitespace trimmed before adding scheme", - value: " 10.10.0.202:4317 ", - set: true, - expected: "http://10.10.0.202:4317", - }, - { - name: "empty value skipped", - value: "", - set: true, - expected: "", - }, - { - name: "whitespace-only value skipped", - value: " ", - set: true, - expected: " ", - }, - { - name: "unset env var skipped", - value: "", - set: false, - expected: "", - }, - } - - for _, tt := range tests { - for _, key := range envKeys { - t.Run(tt.name+"/"+key, func(t *testing.T) { - if tt.set { - t.Setenv(key, tt.value) - } else { - t.Setenv(key, "") - } - - normalizeEndpointEnvVars() - - got := os.Getenv(key) - assert.Equal(t, tt.expected, got) - }) - } - } -} - // =========================================================================== // 2. Telemetry methods on nil receiver // =========================================================================== diff --git a/zap/zap.go b/zap/zap.go index 5f6f6ba..70fc24b 100644 --- a/zap/zap.go +++ b/zap/zap.go @@ -106,7 +106,7 @@ func (l *Logger) WithGroup(name string) logpkg.Logger { return &Logger{logger: zap.NewNop()} } - if name == "" { + if strings.TrimSpace(name) == "" { return l } @@ -174,22 +174,22 @@ func (l *Logger) WithZapFields(fields ...Field) *Logger { // Debug logs a message with debug severity. func (l *Logger) Debug(message string, fields ...Field) { - l.must().Debug(message, fields...) + l.must().Debug(l.sanitizeConsoleMsg(message), fields...) } // Info logs a message with info severity. func (l *Logger) Info(message string, fields ...Field) { - l.must().Info(message, fields...) + l.must().Info(l.sanitizeConsoleMsg(message), fields...) } // Warn logs a message with warn severity. func (l *Logger) Warn(message string, fields ...Field) { - l.must().Warn(message, fields...) + l.must().Warn(l.sanitizeConsoleMsg(message), fields...) } // Error logs a message with error severity. func (l *Logger) Error(message string, fields ...Field) { - l.must().Error(message, fields...) + l.must().Error(l.sanitizeConsoleMsg(message), fields...) } // Raw returns the underlying zap logger.