ci.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: ["**"]
  merge_group:
  workflow_dispatch:

# Cancel in-progress runs when a new commit is pushed to the same PR or branch
concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

env:
  CARGO_NET_GIT_FETCH_WITH_CLI: "true"
  CARGO_NET_RETRY: "10"

jobs:
  lint:
    name: Lint
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Setup Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: "1.97.1"
          components: rustfmt, clippy

      - name: Setup cache
        # Tools under tooling/ are separate Cargo workspaces with their own
        # target dir and Cargo.lock, so they need listing explicitly or their
        # builds are neither cached nor reflected in the cache key.
        uses: Swatinem/rust-cache@v2
        with:
          workspaces: |
            .
            tooling/event-monitor

      - name: Check formatting
        run: cargo fmt --all -- --check

      - name: Cargo check
        run: cargo check --locked --workspace --all-targets

      - name: Clippy
        run: cargo clippy --locked --workspace --all-targets -- -D warnings

      # tooling/event-monitor declares its own [workspace] table, so every step
      # above stops at the root workspace members and never reaches it. Its
      # tests run in this job rather than in `test` because clippy has already
      # compiled the test targets, and because they need none of that job's
      # leanSpec fixtures.
      # `--locked` so the committed Cargo.lock is actually enforced: without it
      # cargo silently resolves and rewrites the lockfile in CI, and a stale or
      # missing entry never fails the build.
      - name: Lint tooling
        working-directory: tooling/event-monitor
        run: |
          cargo fmt --all -- --check
          cargo clippy --locked --all-targets -- -D warnings

      - name: Test tooling
        working-directory: tooling/event-monitor
        run: cargo test --locked

  test:
    name: Test
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Run fixture-based tests
        uses: ./.github/actions/run-fixture-tests

      # Reuses the release build from the test step; validates the benchmark
      # harness end-to-end and its JSON output contract in a few seconds.
      - name: Benchmark smoke (mock crypto)
        run: |
          cargo run --locked --profile release-fast --bin ethlambda -- benchmark synthetic --mock-crypto \
            --num-validators 4 --warmup-slots 4 --iterations 3 --format json \
            | jq -e '.schema_version == 1 and (.samples | length == 3)'

  # Stable cargo ignores the publish-age cooldown in .cargo/config.toml, so the
  # lockfile can pin too-young crates. Fail the build when either lockfile does.
  # Infrastructure failures (toolchain download, a resolution that fails for
  # reasons unrelated to age, e.g. a yanked upstream crate) only warn: they are
  # outside the PR's control and would block every PR.
  cooldown:
    name: Dependency cooldown
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6

      - name: Check lockfiles against the publish-age cooldown
        run: |
          if ! rustup toolchain install nightly-2026-06-21 --profile minimal; then
            echo "::warning title=Publish-age cooldown check skipped::toolchain install failed"
            exit 0
          fi
          status=0
          for manifest in Cargo.toml tooling/event-monitor/Cargo.toml; do
            if ! cargo +nightly-2026-06-21 update --dry-run -Z min-publish-age --manifest-path "$manifest" > cooldown.txt 2>&1; then
              # Drop the index/git refresh chatter so the excerpt is the actual error; %0A = newline in annotations
              msg=$(grep -v '^ *Updating ' cooldown.txt | head -20 | sed ':a;N;$!ba;s/\n/%0A/g')
              echo "::warning title=Publish-age cooldown probe failed for $manifest::$msg"
              continue
            fi
            # A cooldown-driven downgrade is annotated with the too-young version's
            # publish date; downgrades for other reasons (MSRV, a tightened
            # requirement) carry no such note and are not this check's business.
            hits=$(grep -E '^ *Downgrading .*published' cooldown.txt || true)
            if [ -n "$hits" ]; then
              count=$(echo "$hits" | wc -l | tr -d ' ')
              msg=$(echo "$hits" | head -20 | sed ':a;N;$!ba;s/\n/%0A/g')
              echo "::error title=$manifest pins $count crate(s) younger than the publish-age cooldown::$msg"
              status=1
            fi
          done
          exit $status