promotion.yml

name: Promotion HR
on:
  repository_dispatch:
    types:
      - HelmRelease/**

permissions:
  contents: write
  pull-requests: write

jobs:
  promote:
    name: promotion
    runs-on: ubuntu-latest
    if: |
      github.event.client_payload.metadata.env == 'staging' &&
      github.event.client_payload.severity == 'info'
    steps:
      # Checkout main branch.
      - uses: actions/checkout@v4
        with:
          ref: main

      # Parse the event metadata to determine the chart version deployed on staging.
      - name: Get chart version from staging
        id: staging
        run: |
          HELMRELEASE=$(echo ${{ github.event.client_payload.involvedObject.name }})
          NAMESPACE=$(echo ${{ github.event.client_payload.involvedObject.namespace }})
          VERSION=$(echo ${{ github.event.client_payload.metadata.revision }} | cut -d '@' -f1)
          TYPE=$(echo ${{ github.event.client_payload.metadata.type }})
          echo VERSION=${VERSION} >> $GITHUB_OUTPUT
          echo HELMRELEASE=${HELMRELEASE} >> $GITHUB_OUTPUT
          echo NAMESPACE=${NAMESPACE} >> $GITHUB_OUTPUT
          echo TYPE=${TYPE} >> $GITHUB_OUTPUT

      # Patch the chart version in the production Helm release manifest.
      - name: Set chart version in production
        id: production
        env:
          HELM_RELEASE: ${{ steps.staging.outputs.helmrelease }}
          NAMESPACE: ${{ steps.staging.outputs.namespace }}
          CHART_VERSION: ${{ steps.staging.outputs.version }}
          TYPE: ${{ steps.staging.outputs.type }}
        run: |
          echo "Set ${NAMESPACE}/${HELM_RELEASE} chart version to ${CHART_VERSION} in ${TYPE}-stable"
          curv=$(yq '. | select(.metadata.name==env(HELM_RELEASE) and .metadata.namespace==env(NAMESPACE)) | .spec.chart.spec.version' apps/bundles/$TYPE-stable/$TYPE-stable.yaml)
          echo "Current Version: $curv"
          echo "    New Version: $CHART_VERSION"
          if [ -n "$curv" ] && [ "$CHART_VERSION" != "$curv" ]; then
            yq -i '(. | select(.metadata.name == env(HELM_RELEASE) and .metadata.namespace==env(NAMESPACE)) | .spec.chart.spec.version ) = env(CHART_VERSION) ' apps/bundles/$TYPE-stable/$TYPE-stable.yaml
            echo CHANGES=true >> $GITHUB_OUTPUT
          else
            echo "No candidates found"
          fi

      # Open a Pull Request if an upgraded is needed in production.
      - name: Open promotion PR
        uses: peter-evans/create-pull-request@v7
        if: ${{ steps.production.outputs.changes }}
        with:
          branch: staging-promotion-${{ github.run_number }}
          delete-branch: true
          token: ${{ secrets.GITHUB_TOKEN }}
          commit-message: Update ${{ steps.staging.outputs.helmrelease }} to v${{ steps.staging.outputs.version }}
          title: "feat: Promote ${{ steps.staging.outputs.namespace }}/${{ steps.staging.outputs.helmrelease }} release to ${{ steps.staging.outputs.version }} in ${{ steps.staging.outputs.type }}-stable"
          body: |
            **Automated PR**
            HelmRelease ${{ steps.staging.outputs.namespace }}/${{ steps.staging.outputs.helmrelease }} was upgraded to version ${{ steps.staging.outputs.version }} in ${{ steps.staging.outputs.type }}-range.
            Promote to stable.