changelog-verification.yml

name: Changelog verification

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

jobs:
  changelog-verification:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Check for changelog entry
        if: ${{ !contains(github.event.pull_request.labels.*.name, 'no-changelog') }}
        run: |
          git fetch origin ${{ github.base_ref }} --depth 1 && \
          git diff remotes/origin/${{ github.base_ref }} --name-only | grep -P "\.changes/[0-9a-f-]+\.json"
      - name: Error message
        if: ${{ failure() }}
        run: |
          echo "::error ::No new/updated changelog entry found in /.changes directory. Please either:"
          echo "::error ::* Add a changelog entry (see CONTRIBUTING.md for instructions) –or–"
          echo "::error ::* Add the 'no-changelog' label to this PR (in rare cases not warranting a changelog entry)"
          exit 1