pr_validation.yml

name: PR - Validation

on:
  workflow_dispatch:

  pull_request:
    branches:
      - main
      - releases/**
    types:
      - opened
      - synchronize

jobs:

  validate_pr_size:
    name: Ensure PR is small
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # 4.1.1
        name: Checkout
        with:
          fetch-depth: 0

      - name: Get total lines changed
        shell: bash
        run: |
          size=$(git diff --stat origin/main --diff-filter=d \
          | grep -v .lock \
          | awk -F"|" '{ print $2 }' \
          | awk '{ print $1 }' \
          | sed '/^$/d' \
          | paste -sd+ - \
          | bc)

          echo "size=${size}" >> $GITHUB_ENV
          echo ""
          echo "Total lines changed (note: *.lock files are excluded from this count): "
          echo $size

      - name: Evaluate Lines Changed
        shell: bash
        run: |
          if [[ $size -gt 500 ]]
          then
            echo "Warning - total lines changed is greater than 500."
            echo "Please consider breaking this PR down."
            exit 1
          fi