automerge_plugin-only_prs.yml

name: Automatically merge plugin-only PRs


# Triggered on all PRs either by
# - completion of CI checks, OR
# - tagging with label
# 1) If PR is labeled "automerge" or "automerge-web" 
# (all website submissions are tagged "automerge-web"),
# checks if Travis tests pass. If yes, THEN
# 2) Checks if PR modifies any code outside plugin dirs. 
# If no changes are made beyond new or revised plugins
# (subdirs of /benchmarks, /data, /models, or /metrics) 
# the PR is automatically approved and merged.


on:
  pull_request:
    types: [labeled]
  status:

permissions: write-all

jobs:
  setup:
    name: setup
    runs-on: ubuntu-latest
    outputs:
      BSC_DATABASESECRET: ${{ steps.setenvvars.outputs.BSC_DATABASESECRET }}
    steps:
      - name: Check out repository code
        uses: actions/checkout@v2
      - name: Check if main & set dev/prod vars
        id: setenvvars
        run: |
          if [ ${{ github.ref }} != 'refs/heads/main' ]; then
            echo "is NOT main branch"
            echo "::set-output name=BSC_DATABASESECRET:: ${{ secrets.BSC_DATABASESECRET_DEV }}"
          else
            echo "is main branch"
            echo "::set-output name=BSC_DATABASESECRET:: ${{ secrets.BSC_DATABASESECRET_PROD }}"
          fi


  isautomerge:
    name: Set as 'automerge' if PR is labeled with 'automerge' or 'automerge-web'
    runs-on: ubuntu-latest
    if: |
      contains( github.event.pull_request.labels.*.name, 'automerge') ||
      contains( github.event.pull_request.labels.*.name, 'automerge-web')
    outputs:
      AUTOMERGE: ${{ steps.setautomerge.outputs.AUTOMERGE }}
    steps:
      - name: Set 'automerge' to 'True' # job only runs if True
        id: setautomerge
        run: |
          echo "::set-output name=AUTOMERGE::True"


  travis_success:
    name: Check if Travis build is successful
    runs-on: ubuntu-latest
    needs: [isautomerge]
    if: ${{ needs.isautomerge.outputs.AUTOMERGE == 'True' }}
    outputs:
      TRAVIS_OK: ${{ steps.istravisok.outputs.TRAVIS_OK }}
    steps:
      - name: Get Travis build status
        id: gettravisstatus
        run: |
          echo ${{ github.event.pull_request.head.sha }}
          echo "TRAVIS_CONCLUSION=$(python -c "import requests; r = requests.get(\"https://api.github.com/repos/brain-score/language/commits/${{ github.event.pull_request.head.sha }}/check-runs\"); print(next(run['conclusion'] for run in r.json()['check_runs'] if run['name'] == 'Travis CI - Pull Request'))")" >> $GITHUB_ENV
      - name: Check if Travis was successful
        id: istravisok
        run: |
          if [ "$TRAVIS_CONCLUSION" == "success" ]
          then
              travisok=True
          elif [ "$TRAVIS_CONCLUSION" == "None" ]
          then
              travisok=Wait
          else
              travisok=False
          fi
          echo "::set-output name=TRAVIS_OK::$travisok"


  plugin_only:
    name: Ensure PR ONLY changes plugin files
    runs-on: ubuntu-latest
    needs: travis_success
    if: ${{ needs.travis_success.outputs.TRAVIS_OK == 'True' }}
    outputs:
      PLUGIN_ONLY: ${{ steps.ispluginonly.outputs.PLUGIN_ONLY }}
    steps:
      - name: Parse plugin_only confirmation from Travis status update
        id: getpluginonlyvalue
        run: echo "PLUGIN_ONLY=$(python -c "import requests; r = requests.get(\"https://api.github.com/repos/brain-score/language/statuses/$github.event.pull_request.head.sha\"); print(next(status['description'].split('- ')[1] for status in r.json() if status['description'].startswith('Run automerge workflow')))")" >> $GITHUB_ENV
      - name: Check if PR is plugin only
        id: ispluginonly
        run: |
          if [ "$PLUGIN_ONLY" == "True" ]
          then
            pluginonly=True
          else
            pluginonly=False
          fi
          echo "::set-output name=PLUGIN_ONLY::$pluginonly"


  automerge:
    name: If plugin-only, approve and merge
    runs-on: ubuntu-latest
    needs: plugin_only
    if: ${{ needs.plugin_only.outputs.PLUGIN_ONLY == 'True' }}
    steps:
      - name: Auto Approve
        uses: hmarr/auto-approve-action@v3.1.0

      - name: Auto Merge (GitHub submissions)
        uses: plm9606/automerge_actions@1.2.2
        with:
          github-token: ${{ secrets.WORKFLOW_TOKEN }}
          label-name: "automerge"
          merge-method: "squash"
          auto-delete: "true"

      - name: Auto Merge (brain-score.org submissions)
        uses: plm9606/automerge_actions@1.2.2
        with:
          github-token: ${{ secrets.WORKFLOW_TOKEN }}
          label-name: "automerge-web"
          merge-method: "squash"
          auto-delete: "true"