publish.yaml

name: Publish artifacts

on:
  release:
    types: [published]

concurrency: release-${{ github.event.release.tag_name }}

env:
  REGCTL_VERSION: v0.4.8
  SEMVER_VERSION: 3.4.0
  REGISTRY: ghcr.io
  # CHART_REPOSITORY:
  # CHART_DIRECTORY:

defaults:
  run:
    shell: bash

jobs:
  publish-docker:
    name: Publish Docker image
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      packages: write

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

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

    - name: Log in to the Container registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ github.token }}

    - name: Prepare repository name
      id: prepare-repository-name
      run: |
        repository=$REGISTRY/${{ github.repository }}
        echo "repository=${repository,,}" >> $GITHUB_OUTPUT

    - name: Extract metadata (tags, labels) for Docker
      id: extract-metadata
      uses: docker/metadata-action@v5
      with:
        images: ${{ steps.prepare-repository-name.outputs.repository }}

    - name: Build and push Docker image
      uses: docker/build-push-action@v6
      with:
        platforms: linux/amd64,linux/arm64
        context: .
        cache-from: |
          type=gha,scope=sha-${{ github.sha }}
          type=gha,scope=${{ github.ref_name }}
          type=gha,scope=${{ github.base_ref || 'main' }}
          type=gha,scope=main
        cache-to: |
          type=gha,scope=sha-${{ github.sha }},mode=max
          type=gha,scope=${{ github.ref_name }},mode=max
        push: true
        tags: ${{ steps.extract-metadata.outputs.tags }}
        labels: ${{ steps.extract-metadata.outputs.labels }}

  publish-crds:
    name: Publish CRD image
    runs-on: ubuntu-22.04
    permissions:
      contents: read
      packages: write

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

    - name: Setup regctl
      uses: regclient/actions/regctl-installer@main
      with:
        release: ${{ env.REGCTL_VERSION }}
        install-dir: ${{ runner.temp }}/bin

    - name: Log in to the registry
      # regctl-login action is currently broken ...
      # uses: regclient/actions/regctl-login@main
      # with:
      #   registry: ${{ env.REGISTRY }}
      #   username: ${{ github.actor }}
      #   password: ${{ github.token }}
      run: |
        regctl registry login $REGISTRY --user ${{ github.actor }} --pass-stdin <<< ${{ github.token }}

    - name: Build and push artifact
      run: |
        cd crds
        repository=$REGISTRY/${{ github.repository }}/crds
        tar cvz * | regctl artifact put -m application/gzip ${repository,,}:${{ github.event.release.tag_name }}

  update-chart:
    name: Update Helm chart
    runs-on: ubuntu-22.04
    needs: [publish-docker,publish-crds]

    steps:
    - name: Prepare
      id: prepare
      run: |
        chart_repository=$CHART_REPOSITORY
        if [ -z "$chart_repository" ]; then
          chart_repository=${{ github.repository }}-helm
        fi
        echo "chart_repository=$chart_repository" >> $GITHUB_OUTPUT

        chart_directory=$CHART_DIRECTORY
        if [ -z "$chart_directory" ]; then
          chart_directory=chart
        fi
        echo "chart_directory=$chart_directory" >> $GITHUB_OUTPUT

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

    - name: Checkout chart repository
      uses: actions/checkout@v4
      with:
        repository: ${{ steps.prepare.outputs.chart_repository }}
        path: chart-repository
        token: ${{ secrets.WORKFLOW_USER_GH_TOKEN }}

    - name: Setup semver
      uses: sap/cs-actions/setup-semver@main
      with:
        version: ${{ env.SEMVER_VERSION }}
        install-directory: ${{ runner.temp }}/bin

    - name: Update chart repository
      id: update
      run: |
        cd chart-repository
        chart_directory=${{ steps.prepare.outputs.chart_directory }}

        old_version=$(yq .appVersion $chart_directory/Chart.yaml)
        if [ "${old_version:0:1}" != v ] || [ "$(semver validate $old_version)" != valid ]; then
          >&2 echo "Found invalid current appVersion ($old_version) in $chart_directory/Chart.yaml)."
          exit 1
        fi

        new_version=${{ github.event.release.tag_name }}
        if [ "${new_version:0:1}" != v ] || [ "$(semver validate $new_version)" != valid ]; then
          >&2 echo "Invalid target appVersion ($new_version)."
          exit 1
        fi

        if [ $(semver compare $new_version $old_version) -lt 0 ]; then
          echo "Target appVersion ($new_version) is lower than current appVersion ($old_version); skipping update ..."
          exit 0
        fi

        version_bump=$(semver diff $new_version $old_version)
        echo "Found appVersion bump: $version_bump."
        if [ "$version_bump" != major ] && [ "$version_bump" != minor ]; then
          version_bump=patch
        fi
        echo "Performing chart version bump: $version_bump ..."

        echo "Updating custom resource definitions ($chart_directory/crds) ..."
        rm -rf $chart_directory/crds
        cp -r ../crds $chart_directory

        echo "Updating appVersion in $chart_directory/Chart.yaml (current: $old_version; target: $new_version) ..."
        perl -pi -e "s#^appVersion:.*#appVersion: $new_version#g" $chart_directory/Chart.yaml

        if [ -z "$(git status --porcelain)" ]; then
          echo "Nothing has changed; skipping commit/push ..."
          exit 0
        fi

        git config user.name "${{ vars.WORKFLOW_USER_NAME }}"
        git config user.email "${{ vars.WORKFLOW_USER_EMAIL }}"
        git add -A
        git commit -F- <<END
        Update chart (triggered by operator release $new_version)
        Repository: ${{ github.repository }}
        Release: ${{ github.event.release.tag_name }}
        Commit: ${{ github.sha }}
        END
        git push

        echo "version_bump=$version_bump" >> $GITHUB_OUTPUT

        # add some safety sleep to overcome github race conditions
        sleep 10s

    - name: Release chart repository
      if: steps.update.outputs.version_bump != ''
      uses: benc-uk/workflow-dispatch@v1
      with:
        repo: ${{ steps.prepare.outputs.chart_repository }}
        workflow: release.yaml
        ref: main
        token: ${{ secrets.WORKFLOW_USER_GH_TOKEN }}
        inputs: '{ "version-bump": "${{ steps.update.outputs.version_bump }}" }'