check-proto-break.yml

name: Check proto breaks

on:
  pull_request:
    types:
    - opened
    - synchronize
    - edited

jobs:
  check-if-code-change:
    runs-on: ubuntu-latest
    outputs:
      change: ${{ steps.check.outputs.change }}
    steps:
      - uses: actions/checkout@v4
        with:
          go-version: '1.20'
          fetch-depth: 0
      - run: |
          if git --no-pager diff --exit-code origin/main...HEAD -- . ':!docs' ':!*.md'; then
            echo "::set-output name=change::false"
          else
            echo "::set-output name=change::true"
          fi
        id: check
  check-proto-break:
    needs: check-if-code-change
    if: ${{ needs.check-if-code-change.outputs.change == 'true' }}
    runs-on: ubuntu-latest
    steps:
    - uses: actions/setup-go@v5
      with:
        go-version: '1.20'
    - run: go install github.com/bufbuild/buf/cmd/buf@v1.26.1
    - uses: actions/checkout@v4
      with:
        fetch-depth: 0
    - name: Check if PR is breaking
      run: |
        if [[ "${{ github.event.pull_request.title }}" == *'!'* ]]; then
          echo "PR is a breaking change by title"
          exit 0
        else
          echo "Checking if PR is a breaking change"
          buf breaking --path ./api/protobuf/ --against '.git#branch=origin/main'
        fi