check-manifest-diffs.yaml

name: "Check for diff in manifests"

on:
  pull_request:
    branches: [ "main" ]
    types:
      - "opened"
      - "synchronize"
      - "reopened"
      - "labeled"
      - "unlabeled"

jobs:
  create-pr-manifests:
    if: ${{ contains(github.event.pull_request.labels.*.name, 'confirm/helm-update') == false }}
    name: Create PR manifests
    runs-on: ubuntu-latest
    outputs:
      manifests: ${{ steps.make-pr-manifests.outputs.manifests }}
    steps:
      - name: Checkout lifecycle-manager
        uses: actions/checkout@v4
      - name: Run 'make dry-run'
        id: make-pr-manifests
        run: |
          make dry-run
          {
            echo 'manifests<<EOF'
            cat ./dry-run/manifests.yaml
            echo EOF
          } >> "$GITHUB_OUTPUT"
  create-main-manifests:
    if: ${{ contains(github.event.pull_request.labels.*.name, 'confirm/helm-update') == false }}
    name: Create 'main' manifests
    runs-on: ubuntu-latest
    outputs:
      manifests: ${{ steps.make-main-manifests.outputs.manifests }}
    steps:
      - name: Checkout lifecycle-manager
        uses: actions/checkout@v4
        with:
          ref: main
      - name: Run 'make dry-run'
        id: make-main-manifests
        run: |
          make dry-run
          {
            echo 'manifests<<EOF'
            cat ./dry-run/manifests.yaml
            echo EOF
          } >> "$GITHUB_OUTPUT"
  diff-manifests:
    needs:
    - create-pr-manifests
    - create-main-manifests
    name: Diff manifests
    runs-on: ubuntu-latest
    steps:
      - name: Diff
        env:
          PR_MANIFESTS: ${{needs.create-pr-manifests.outputs.manifests}}
          MAIN_MANIFESTS: ${{needs.create-main-manifests.outputs.manifests}}
        run: |
          echo "$PR_MANIFESTS" >> ./prManifests.yaml
          echo "$MAIN_MANIFESTS" >> ./mainManifests.yaml

          set +e
          SCRIPT_OUTPUT=$(diff ./prManifests.yaml ./mainManifests.yaml)
          SCRIPT_EXIT_CODE=$?
          if [[ $SCRIPT_EXIT_CODE != 0 ]]; then
            echo "Detected diff in manifests. Make sure to update Helm charts accordingly and add the'confirm/helm-update' label to the PR when okay."
            echo "$SCRIPT_OUTPUT"
            exit $SCRIPT_EXIT_CODE
          fi
          set -e

          echo "No diff in manifests, all good."