backport.yml

name: Backport changes to maintenance branches
on:
 push:
  branches:
   - main
jobs:
  backport:
    strategy:
      matrix:
        branch: ['v/5.8', 'v/5.9', 'v/5.10']
    runs-on: ubuntu-latest
    steps:
    
      - name: checkout
        uses: actions/checkout@v4
        with:
         fetch-depth: 0

      - name: Set up git config
        run: |
          git config user.name "GitHub Actions Bot"
          git config user.email "<>"
          
      - name: Check PR for backport label
        id: check_pr_labels
        uses: shioyang/check-pr-labels-on-push-action@v1.0.12
        with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         labels: '["backport"]'
        
      - name: See result
        run: echo "${{ steps.check_pr_labels.outputs.result }}"

      - name: Checkout maintenance branch and cherry-pick
        if: ${{ steps.check_pr_labels.outputs.result == 'true' }}
        run: |
          git fetch
          git checkout ${{ matrix.branch }}
          git cherry-pick -x --strategy=recursive -X theirs $GITHUB_SHA
          git push