Migrate CI to GitHub Actions

.circleci/config.yml

@@ -1,69 +1,33 @@
 ---
-version: 2.1
+# Prometheus has switched to GitHub action.
+# Circle CI is not disabled repository-wise so that previous pull requests
+# continue working.
+# This file does not generate any CircleCI workflow.
 
-orbs:
-  prometheus: prometheus/prometheus@0.17.1
+version: 2.1
 
 executors:
-  # This must match .promu.yml.
   golang:
     docker:
-      - image: cimg/go:1.25
+      - image: busybox
 
 jobs:
-  test:
+  noopjob:
     executor: golang
 
     steps:
-      - prometheus/setup_environment
-      - run: make
-      - prometheus/store_artifact:
-          file: pgbouncer_exporter
+      - run:
+          command: "true"
 
 workflows:
   version: 2
-  pgbouncer_exporter:
+  prometheus:
     jobs:
-      - test:
-          filters:
-            tags:
-              only: /.*/
-      - prometheus/build:
-          name: build
-          parallelism: 3
-          promu_opts: "-p linux/amd64 -p windows/amd64 -p linux/arm64 -p darwin/amd64 -p darwin/arm64 -p linux/386"
-          filters:
-            tags:
-              ignore: /^v.*/
-            branches:
-              ignore: /^(main|master|release-.*|.*build-all.*)$/
-      - prometheus/build:
-          name: build_all
-          parallelism: 12
-          filters:
-            branches:
-              only: /^(main|master|release-.*|.*build-all.*)$/
-            tags:
-              only: /^v.*/
-      - prometheus/publish_master:
-          context: org-context
-          docker_hub_organization: prometheuscommunity
-          quay_io_organization: prometheuscommunity
-          requires:
-            - test
-            - build_all
-          filters:
-            branches:
-              only: master
-      - prometheus/publish_release:
-          context: org-context
-          docker_hub_organization: prometheuscommunity
-          quay_io_organization: prometheuscommunity
-          requires:
-            - test
-            - build_all
+      - noopjob
+    triggers:
+      - schedule:
+          cron: "0 0 30 2 *"
           filters:
-            tags:
-              only: /^v.*/
             branches:
-              ignore: /.*/
+              only:
+                - main

.github/workflows/ci.yml

@@ -0,0 +1,108 @@
+---
+name: CI
+on:
+  pull_request:
+  push:
+    branches: [master, 'release-*']
+
+jobs:
+  test_go:
+    name: Go tests
+    runs-on: ubuntu-latest
+    container:
+      # Whenever the Go version is updated here, .promu.yml
+      # should also be updated.
+      image: quay.io/prometheus/golang-builder:1.25-base
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
+      - uses: ./.github/promci/actions/setup_environment
+      - run: make
+
+  build:
+    name: Build Prometheus for common architectures
+    runs-on: ubuntu-latest
+    if: |
+      !(github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v'))
+      &&
+      !(github.event_name == 'pull_request' && startsWith(github.event.pull_request.base.ref, 'release-'))
+      &&
+      !(github.event_name == 'push' && github.event.ref == 'refs/heads/main')
+      &&
+      !(github.event_name == 'push' && github.event.ref == 'refs/heads/master')
+    strategy:
+      matrix:
+        thread: [ 0, 1, 2 ]
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
+      - uses: ./.github/promci/actions/build
+        with:
+          promu_opts: "-p linux/amd64 -p windows/amd64 -p linux/arm64 -p darwin/amd64 -p darwin/arm64 -p linux/386"
+          parallelism: 3
+          thread: ${{ matrix.thread }}
+
+  build_all:
+    name: Build Prometheus for all architectures
+    runs-on: ubuntu-latest
+    if: |
+      (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v'))
+      ||
+      (github.event_name == 'pull_request' && startsWith(github.event.pull_request.base.ref, 'release-'))
+      ||
+      (github.event_name == 'push' && github.event.ref == 'refs/heads/main')
+      ||
+      (github.event_name == 'push' && github.event.ref == 'refs/heads/master')
+    strategy:
+      matrix:
+        thread: [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 ]
+
+    # Whenever the Go version is updated here, .promu.yml
+    # should also be updated.
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
+      - uses: ./.github/promci/actions/build
+        with:
+          parallelism: 12
+          thread: ${{ matrix.thread }}
+
+  publish_main:
+    # https://github.com/prometheus/promci/blob/52c7012f5f0070d7281b8db4a119e21341d43c91/actions/publish_main/action.yml
+    name: Publish main branch artifacts
+    runs-on: ubuntu-latest
+    needs: [test_go, build_all]
+    if: |
+      (github.event_name == 'push' && github.event.ref == 'refs/heads/main')
+      ||
+      (github.event_name == 'push' && github.event.ref == 'refs/heads/master')
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
+      - uses: ./.github/promci/actions/publish_main
+        with:
+          docker_hub_organization: prometheuscommunity
+          docker_hub_login: ${{ secrets.docker_hub_login }}
+          docker_hub_password: ${{ secrets.docker_hub_password }}
+          quay_io_organization: prometheuscommunity
+          quay_io_login: ${{ secrets.quay_io_login }}
+          quay_io_password: ${{ secrets.quay_io_password }}
+
+  publish_release:
+    name: Publish release artefacts
+    runs-on: ubuntu-latest
+    needs: [test_go, build_all]
+    if: |
+      (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v'))
+    steps:
+      - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
+      - uses: prometheus/promci@443c7fc2397e946bc9f5029e313a9c3441b9b86d # v0.4.7
+      - uses: ./.github/promci/actions/publish_release
+        with:
+          docker_hub_organization: prometheuscommunity
+          docker_hub_login: ${{ secrets.docker_hub_login }}
+          docker_hub_password: ${{ secrets.docker_hub_password }}
+          quay_io_organization: prometheuscommunity
+          quay_io_login: ${{ secrets.quay_io_login }}
+          quay_io_password: ${{ secrets.quay_io_password }}
+          github_token: ${{ secrets.PROMBOT_GITHUB_TOKEN }}