ci.yml

name: Proposal tests

# run on all PRs
on:
  pull_request:
  merge_group:
  push:
    branches: [main]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  platforms:
    runs-on: ubuntu-latest
    outputs:
      default: '${{ steps.platforms.outputs.default }}'
      platforms: '${{ steps.platforms.outputs.platforms }}'
    steps:
      - name: Compute Docker platforms
        id: platforms
        run: |
          DEFAULT_PLATFORM=linux/amd64
          echo "default=$DEFAULT_PLATFORM" >> $GITHUB_OUTPUT
          if ${{ github.event_name == 'pull_request' || github.event_name == 'merge_group' }}; then
            platforms='["'"$DEFAULT_PLATFORM"'"]'
          else
            platforms='["linux/amd64","linux/arm64/v8"]'
          fi
          echo "platforms=$platforms" >> $GITHUB_OUTPUT
    
  # see https://docs.docker.com/build/ci/github-actions/test-before-push/
  test-proposals:
<<<<<<< HEAD
    strategy:
      matrix:
        platform: [linux/amd64]
    runs-on: ubuntu-latest
=======
    needs: [platforms]
>>>>>>> f082c20 (ci(docker): run each platform on a different worker)
    # UNTIL https://github.com/Agoric/agoric-3-proposals/issues/2
    timeout-minutes: 120
    strategy:
      matrix:
        platform: ${{ fromJSON(needs.platforms.outputs.platforms) }}
    # Run on our own self-hosted ARM64 machine if the platform is ARMish.
    runs-on: ${{ contains(matrix.platform, '/arm') && fromJSON('["self-hosted","Linux","ARM64"]') || 'ubuntu-latest' }}
    steps:
      - name: free up disk space
        if: ${{ !contains(matrix.platform, '/arm') }}
        run: |
          # Workaround to provide additional free space for testing.
          #   https://github.com/actions/runner-images/issues/2840#issuecomment-790492173
          # If this turns out not to be enough, maybe look instead at
          #   https://github.com/actions/runner-images/issues/2840#issuecomment-1540506686
          df -h
          sudo rm -rf /usr/share/dotnet
          sudo rm -rf /opt/ghc
          sudo rm -rf "/usr/local/share/boost"
          sudo rm -rf "$AGENT_TOOLSDIRECTORY"
          echo "=== After cleanup:"
          df -h

      - name: Set environment
        run: |
          echo "DEFAULT_PLATFORM=${{ needs.platforms.outputs.default }}" >> $GITHUB_ENV

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Set up QEMU for cross-platform builds
        uses: docker/setup-qemu-action@v3

      - name: Log in to the Container registry
        uses: docker/login-action@v3
        # see https://docs.github.com/en/actions/publishing-packages/publishing-docker-images
        with:
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
          registry: ${{ env.REGISTRY }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

        # The .ts scripts depend upon this
      - run: tsx --version || npm install --global tsx

      - name: build test images if ${{ matrix.platform }} == ${{ env.DEFAULT_PLATFORM }}
        run: |
          docker info
          ./buildTestImages.ts ${{ matrix.platform == env.DEFAULT_PLATFORM && ' ' || '--dry' }}
      - name: run test images
        if: ${{ matrix.platform == env.DEFAULT_PLATFORM }}
        run: ./runTestImages.ts

      - name: Compute tags
        id: docker-tags
        run: |
          sep=
          SUFFIXED=
          uarch=$(echo "${{ matrix.platform }}" | tr / _)
          for TAG in ${{ steps.meta.outputs.tags }}; do
            SUFFIXED="$SUFFIXED$sep$TAG-$uarch"
            if test -z "$sep"; then
              sep=,
              echo "tag=$TAG-$uarch" >> $GITHUB_OUTPUT
            fi
          done
          echo "tags=$SUFFIXED" >> $GITHUB_OUTPUT
      
      # XXX this should be instant for the local platform because all the stages
      # were already built in the steps above but it's re-building the last
      # stage. This is deemed good enough for now.  see
      # https://github.com/moby/moby/issues/34715
      - name: Build and push images
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: ${{ matrix.platform }}
          # push to registry on every repo push. A PR #2 will push with tag `pr-2` and `main` will have tag `main`.
          # See https://github.com/docker/metadata-action?tab=readme-ov-file#basic.
          push: true
          tags: ${{ steps.docker-tags.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

  # Publish the build's multiarch images to Docker Registry.
  docker-publish-multiarch:
    needs: [test-proposals, platforms]
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          buildkitd-flags: --debug

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}

      - name: Login to Docker Registry
        uses: docker/login-action@v3
        with:
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
          registry: ${{ env.REGISTRY }}
      - name: Compute tags
        id: docker-tags
        run: |
          echo "tags=${{ steps.meta.outputs.tags }}" >> $GITHUB_OUTPUT
      
      - name: Push multiarch image
        run: |
          set -ex
          for TAG in ${{ steps.docker-tags.outputs.tags }}; do
            sources=
            for ARCH in ${{ join(fromJson(needs.platforms.outputs.platforms), ' ') }}; do
              uarch=$(echo "$ARCH" | tr / _)
              BUILD_TAG="$TAG-$uarch"
              sources="$sources $BUILD_TAG"
            done
            docker buildx imagetools create --tag "$TAG"$sources
          done