receive-pr.yml

# Description: This workflow runs OpenRewrite recipes against opened pull request and upload the patch.
# Since this pull request receives untrusted code, we should **NOT** have any secrets in the environment.
# https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
---
name: receive-pr

on:
  pull_request:
    types: [opened, synchronize]
    branches:
      - master

concurrency:
  group: '${{ github.workflow }} @ ${{ github.ref }}'
  cancel-in-progress: true

jobs:
  upload-patch:
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{github.event.pull_request.head.ref}}
          repository: ${{github.event.pull_request.head.repo.full_name}}
      - uses: actions/setup-java@v4
        with:
          java-version: '21'
          distribution: 'temurin'
          cache: 'maven'

      # Capture the PR number
      # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#using-data-from-the-triggering-workflow
      - name: Create pr_number.txt
        run: echo "${{ github.event.number }}" > pr_number.txt
      - uses: actions/upload-artifact@v4
        with:
          name: pr_number
          path: pr_number.txt
      - name: Remove pr_number.txt
        run: rm -f pr_number.txt

      # Execute recipes
      - name: Apply OpenRewrite recipes
        run: ./mvnw -Dtoolchain.skip=true -Dlicense.skip=true -DskipTests=true -P openrewrite clean install

      # Capture the diff
      - name: Create patch
        run: |
          git diff | tee git-diff.patch
      - uses: actions/upload-artifact@v4
        with:
          name: patch
          path: git-diff.patch