ci-cherry-pick.yml

name: Cherry-Pick to Release Branch

on:
  pull_request:
    branches:
      - main
      - fix/*
    types:
      - closed

run-name: Cherry pick `${{ github.event.pull_request.title }}` to release branch

jobs:
  cherry-pick:
    if: ${{ (github.event.pull_request.merged == true) && (contains(github.event.pull_request.labels.*.name, 'non-breaking')) }}
    runs-on: ubuntu-latest
    steps:
      - name: Checkout branch
        uses: actions/checkout@v3
        with:
          ref: main

      - name: Configure Git
        run: |
          git config --global user.name 'GitHub Action'
          git config --global user.email 'action@github.com'

      - name: Cherry-pick commit
        run: |
          set -x
          git fetch --all
          COMMIT_SHA=$(git rev-parse HEAD)
          echo "COMMIT_SHA=$COMMIT_SHA" >> $GITHUB_ENV
          
          RELEASE_BRANCH="release/$(git branch -r | grep 'origin/release/[0-9]\+\.[0-9]' | sed 's/.*release\///' | sort -V | tail -n1)"
          echo "RELEASE_BRANCH=$RELEASE_BRANCH" >> $GITHUB_ENV
          
          BRANCH=pick/non-breaking-$(date +%s)
          echo "BRANCH=$BRANCH" >> $GITHUB_ENV
          
          git checkout $RELEASE_BRANCH
          git pull origin $RELEASE_BRANCH
          
          git checkout -b $BRANCH
          git cherry-pick -x $COMMIT_SHA

      - name: Push to Remote
        run: |
          git push origin ${{ env.BRANCH }}

      - name: Create Pull Request
        uses: peter-evans/create-pull-request@v3
        with:
          token: ${{ secrets.CF_BACKEND_GITHUB_TOKEN }}
          commit-message: Cherry-picked from ${{ env.COMMIT_SHA }}
          title: "Cherry-Pick ${{ env.COMMIT_SHA }} to ${{ env.RELEASE_BRANCH }}"
          branch: ${{ env.BRANCH }}
          base: '${{ env.RELEASE_BRANCH }}'
          reviewers: 'martin-chainflip'
          labels: cherry-pick

      - name: Notify on failed cherry-pick
        if: failure() || cancelled()
        env:
          DISCORD_USERNAME: "Release Picker"
          DISCORD_WEBHOOK: ${{ secrets.CF_DISCORD_ALERTS_CRITICAL }}
        uses: Ilshidur/action-discord@0.3.2
        with:
          args: |
            🍒⚠️ Sorry **${{ github.actor }}**, The attempt to cherry-pick `${{ env.COMMIT_SHA }}` on to `${{ env.RELEASE_BRANCH }}` was unsuccessful
            Please check the [GitHub job](${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}) to see what went wrong.