check-watchdog.yaml

name: Check Jenkins Watchdog Step

on:
  pull_request:
    paths:
      - 'Jenkinsfile'

jobs:
  check-modifications:
    runs-on: ubuntu-latest
    steps:
    - name: Checkout code
      uses: actions/checkout@v2
      with:
        ref: ${{ github.head_ref }}

    - name: Fetch master branch
      run: git fetch origin master:master

    - name: Check for modifications in the watchdog function
      run: |
        set -x
        if git diff --unified=0 master ${{ github.head_ref }} Jenkinsfile | grep 'void watchdog()'; then
          echo "ERROR: The watchdog function in the Jenkinsfile has been modified."
          exit 1
        else
          echo "watchdog OK"
          exit 0
        fi