diff --git a/.gitignore b/.gitignore index f477bd3..8b1312e 100644 --- a/.gitignore +++ b/.gitignore @@ -5,3 +5,7 @@ credentials.json *.iml .idea +examples/**/*.zip +examples/**/terraform.tfvars +modules/**/terraform.tfvars +submodules/**/terraform.tfvars diff --git a/modules/project_cleanup/README.md b/modules/project_cleanup/README.md new file mode 100644 index 0000000..21f5ff4 --- /dev/null +++ b/modules/project_cleanup/README.md @@ -0,0 +1,37 @@ +# Old Project Cleanup Utility Module + +This module schedules a job to clean up GCP projects older than a specified length of time, that match a particular key-value pair. This job runs every 5 minutes via Google Cloud Scheduled Functions. Please see the [utility's readme](./function_source/README.md) for more information as to its operation and configuration. + +## Requirements + +### App Engine + +Running this module requires an App Engine app in the specified project/region. More information is in the [root readme](../../README.md#app-engine). + +### Enabled Services + +The following services must be enabled on the project housing the cleanup function prior to invoking this module: + +- Cloud Functions (`cloudfunctions.googleapis.com`) +- Cloud Scheduler (`cloudscheduler.googleapis.com`) +- Cloud Resource Manager (`cloudresourcemanager.googleapis.com`) + +[^]: (autogen_docs_start) + + +## Inputs + +| Name | Description | Type | Default | Required | +|------|-------------|:----:|:-----:|:-----:| +| organization_id | The organization ID whose projects to clean up | string | - | yes | +| project_id | The project ID to host the scheduled function in | string | - | yes | +| region | The region the project is in (App Engine specific) | string | `us-central1` | no | + +## Outputs + +| Name | Description | +|------|-------------| +| name | The name of the job created | +| project_id | The project ID | + +[^]: (autogen_docs_end) diff --git a/modules/project_cleanup/function_source/README.md b/modules/project_cleanup/function_source/README.md new file mode 100644 index 0000000..6149834 --- /dev/null +++ b/modules/project_cleanup/function_source/README.md @@ -0,0 +1,22 @@ +# Project Cleanup Utility + +This is a simple utility that scans a GCP organization for projects matching certain criteria, and enqueues such projects for deletion. Currently supported criteria are the combination of: + +- **Age:** Only projects older than the configured age, in hours, will be marked for deletion. +- **Key-Value Pair:** Only projects whose labels contain the provided key-value pair will be marked for deletion. + +Both of these criteria must be met for a project to be deleted. + +## Environment Configuration + +The following environment variables may be specified to configure the cleanup utility: + +| Name | Description | Type | Default | Required | +|------|-------------|:----:|:-----:|:-----:| +| `TARGET_TAG_NAME` | The tag name to match on for identifying projects to delete | string | n/a | yes | +| `TARGET_TAG_VALUE` | The tag value to match on for identifying projects to delete | string | n/a | yes | +| `MAX_PROJECT_AGE_HOURS` | The project age, in hours, at which point deletion should be considered | integer | n/a | yes | + +## Required Permissions + +This Cloud Function must be run as a Service Account with the `Organization Administrator` role. diff --git a/modules/project_cleanup/function_source/go.mod b/modules/project_cleanup/function_source/go.mod new file mode 100644 index 0000000..63fd49d --- /dev/null +++ b/modules/project_cleanup/function_source/go.mod @@ -0,0 +1,9 @@ +module github.com/terraform-google-modules/project-cleaner + +go 1.11 + +require ( + golang.org/x/net v0.0.0-20190318221613-d196dffd7c2b + golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421 + google.golang.org/api v0.1.0 +) diff --git a/modules/project_cleanup/function_source/go.sum b/modules/project_cleanup/function_source/go.sum new file mode 100644 index 0000000..c24552f --- /dev/null +++ b/modules/project_cleanup/function_source/go.sum @@ -0,0 +1,115 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0 h1:eOI3/cP2VTU6uZLDYAoic+eyzzB9YyGmJ7eIjl8rOPg= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +git.apache.org/thrift.git 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use this file except in compliance with the License. +You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + +Unless required by applicable law or agreed to in writing, software +distributed under the License is distributed on an "AS IS" BASIS, +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +See the License for the specific language governing permissions and +limitations under the License. +*/ + +package project_cleaner + +import ( + "fmt" + "log" + "os" + "strconv" + "time" + + "golang.org/x/net/context" + "golang.org/x/oauth2/google" + "google.golang.org/api/cloudresourcemanager/v1" +) + +var ( + logger = log.New(os.Stdout, "", 0) +) + +// PubSubMessage wraps the message sent to the background Cloud Function by GCP PubSub. +type PubSubMessage struct { + Data []byte `json:"data"` +} + +// CleanUpProjects is the entry point of the scheduled function. +func CleanUpProjects(ctx context.Context, m PubSubMessage) error { + targetTag := os.Getenv("TARGET_TAG_NAME") + targetValue := os.Getenv("TARGET_TAG_VALUE") + maxAgeInHoursStr := os.Getenv("MAX_PROJECT_AGE_HOURS") + maxAgeInHours, err := strconv.ParseInt(maxAgeInHoursStr, 10, 0) + if err != nil { + logger.Fatal(fmt.Sprintf("Could not convert %s to integer", maxAgeInHoursStr)) + return err + } + logger.Println(fmt.Sprintf("Launching project cleanup for projects older than %d hours, with tag %s=%s", maxAgeInHours, targetTag, targetValue)) + err = deleteProjectsMatchingTag(ctx, targetTag, targetValue, maxAgeInHours) + if err != nil { + logger.Fatal(err) + } + return err +} + +func deleteProjectsMatchingTag(ctx context.Context, key string, value string, acceptableAgeInHours int64) error { + logger.Println("Initializing Google client") + c, err := google.DefaultClient(ctx, cloudresourcemanager.CloudPlatformScope) + if err != nil { + return err + } + + cloudResourceManagerService, err := cloudresourcemanager.New(c) + if err != nil { + return err + } + + resourceCreationCutoff := tooOldTime(int64(acceptableAgeInHours * 60 * 60)) + + logger.Println("Looking through projects") + req := cloudResourceManagerService.Projects.List() + if err := req.Pages(ctx, func(page *cloudresourcemanager.ListProjectsResponse) error { + for _, project := range page.Projects { + if val, ok := project.Labels[key]; !(ok && val == value) { + logger.Println(fmt.Sprintf("Rejecting project %s because of missing label", project.ProjectId)) + continue + } + + if project.LifecycleState != "ACTIVE" { + logger.Println(fmt.Sprintf("Rejecting project %s because lifecycle state is not ACTIVE", project.ProjectId)) + continue + } + + projectCreatedAt, err := time.Parse(time.RFC3339, project.CreateTime) + if err != nil { + return err + } + + if !projectCreatedAt.Before(resourceCreationCutoff) { + logger.Println(fmt.Sprintf("Rejecting project %s because it was created too recently", project.ProjectId)) + continue + } + + logger.Println(fmt.Sprintf("Project %s was created at %s, is active, and is older than %d hours. Deleting.", project.ProjectId, project.CreateTime, acceptableAgeInHours)) + + _, err = cloudResourceManagerService.Projects.Delete(project.ProjectId).Do() + if err != nil { + logger.Fatal(err) + return err + } + logger.Println(fmt.Sprintf("Requested deletion of project %s.", project.ProjectId)) + } + return nil + }); err != nil { + return err + } + logger.Println("Considered all projects") + return nil +} + +func tooOldTime(i int64) time.Time { + return time.Unix(time.Now().Unix()-i, 0) +} diff --git a/modules/project_cleanup/main.tf b/modules/project_cleanup/main.tf new file mode 100644 index 0000000..53f6e25 --- /dev/null +++ b/modules/project_cleanup/main.tf @@ -0,0 +1,49 @@ +/** + * Copyright 2019 Google LLC + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +resource "google_service_account" "project_cleaner_function" { + project = "${var.project_id}" + account_id = "project-cleaner-function" + display_name = "Project Cleaner Function" +} + +resource "google_organization_iam_member" "project_owner" { + org_id = "${var.organization_id}" + role = "roles/owner" + member = "serviceAccount:${google_service_account.project_cleaner_function.email}" +} + +module "scheduled_project_cleaner" { + source = "../../" + project_id = "${var.project_id}" + job_name = "project-cleaner" + job_schedule = "*/5 * * * *" + function_entry_point = "CleanUpProjects" + function_source_directory = "${path.module}/function_source" + function_name = "old-project-cleaner" + region = "${var.region}" + topic_name = "pubsub_scheduled_project_cleaner" + function_available_memory_mb = "128" + function_description = "Clean up GCP projects older than ${var.max_project_age_in_hours} hours matching particular tags" + function_runtime = "go111" + function_service_account_email = "${google_service_account.project_cleaner_function.email}" + + function_environment_variables = { + TARGET_TAG_NAME = "${var.target_tag_name}" + TARGET_TAG_VALUE = "${var.target_tag_value}" + MAX_PROJECT_AGE_HOURS = "${var.max_project_age_in_hours}" + } +} diff --git a/modules/project_cleanup/outputs.tf b/modules/project_cleanup/outputs.tf new file mode 100644 index 0000000..290b9a2 --- /dev/null +++ b/modules/project_cleanup/outputs.tf @@ -0,0 +1,25 @@ +/** + * Copyright 2019 Google LLC + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +output "name" { + value = "${module.scheduled_project_cleaner.name}" + description = "The name of the job created" +} + +output "project_id" { + value = "${var.project_id}" + description = "The project ID" +} diff --git a/modules/project_cleanup/terraform.tfvars.sample b/modules/project_cleanup/terraform.tfvars.sample new file mode 100644 index 0000000..5ae9d8f --- /dev/null +++ b/modules/project_cleanup/terraform.tfvars.sample @@ -0,0 +1,5 @@ +organization_id = "" + +project_id = "" + +region = "" diff --git a/modules/project_cleanup/variables.tf b/modules/project_cleanup/variables.tf new file mode 100644 index 0000000..6ef3273 --- /dev/null +++ b/modules/project_cleanup/variables.tf @@ -0,0 +1,42 @@ +/** + * Copyright 2019 Google LLC + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +variable "organization_id" { + description = "The organization ID whose projects to clean up" +} + +variable "project_id" { + description = "The project ID to host the scheduled function in" +} + +variable "region" { + description = "The region the project is in (App Engine specific)" +} + +variable "target_tag_name" { + description = "The name of a tag to filter GCP projects on for consideration by the cleanup utility" + default = "cft-ephemeral" +} + +variable "target_tag_value" { + description = "The value of a tag to filter GCP projects on for consideration by the cleanup utility" + default = "true" +} + +variable "max_project_age_in_hours" { + description = "The maximum number of hours that a GCP project, selected by `target_tag_name` and `target_tag_value`, can exist" + default = "6" +}