autoformat.yml

# A workflow to apply autoformatting when a PR is commented with 'autoformat'.

name: Autoformat
on:
  issue_comment:
    types: [created, edited]

defaults:
  run:
    shell: bash --noprofile --norc -exo pipefail {0}

jobs:
  check-comment:
    runs-on: ubuntu-latest
    if: ${{ github.event.issue.pull_request && contains(github.event.comment.body, 'autoformat') }}
    outputs:
      matched: ${{ steps.check-comment.outputs.result }}
      repository: ${{ fromJSON(steps.create-status.outputs.result).repository }}
      ref: ${{ fromJSON(steps.create-status.outputs.result).ref }}
      sha: ${{ fromJSON(steps.create-status.outputs.result).sha }}
      pull_number: ${{ fromJSON(steps.create-status.outputs.result).pull_number }}
    steps:
      - uses: actions/checkout@v2
      - name: Check comment
        id: check-comment
        uses: actions/github-script@v4
        with:
          result-encoding: string
          script: |
            return context.payload.comment.body.trim() === 'autoformat';
      - name: Create status
        id: create-status
        if: ${{ steps.check-comment.outputs.result == 'true' }}
        uses: actions/github-script@v4
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const autoformat = require('./.github/workflows/autoformat.js');
            return await autoformat.createStatus(context, github, core);

  check-diff:
    runs-on: ubuntu-latest
    needs: check-comment
    if: ${{ needs.check-comment.outputs.matched == 'true' }}
    outputs:
      py_changed: ${{ steps.check-diff.outputs.py_changed }}
      ui_changed: ${{ steps.check-diff.outputs.ui_changed }}
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-python@v2
        with:
          python-version: '3.6'
      - run: |
          pip install requests
      - name: Check diff
        id: check-diff
        run: |
          repository="${{ github.repository }}"
          pull_number="${{ needs.check-comment.outputs.pull_number }}"
          changed_files="$(python dev/list_changed_files.py --repository $repository --pr-num $pull_number)"
          py_changed=$([[ -z $(echo "$changed_files" | grep '\.py$') ]] && echo "false" || echo "true")
          ui_changed=$([[ -z $(echo "$changed_files" | grep '^mlflow/server/js') ]] && echo "false" || echo "true")
          echo "::set-output name=py_changed::$py_changed"
          echo "::set-output name=ui_changed::$ui_changed"

  python:
    # Generate a patch to format python files.
    runs-on: ubuntu-latest
    needs: [check-comment, check-diff]
    if: ${{ needs.check-diff.outputs.py_changed == 'true' }}
    outputs:
      has_diff: ${{ steps.check-diff.outputs.has_diff }}
    steps:
      - uses: actions/checkout@v2
        with:
          repository: ${{ needs.check-comment.outputs.repository }}
          ref: ${{ needs.check-comment.outputs.ref }}
      - uses: actions/setup-python@v2
        with:
          python-version: '3.6'
      - name: Install dependencies
        run: |
          pip install -r requirements/lint-requirements.txt
      - name: Run black
        run: |
          black .
      - name: Check diff
        id: check-diff
        run: |
          git diff --output=python.diff
          has_diff=$([[ -z "$(cat python.diff)" ]] && echo "false" || echo "true")
          echo "::set-output name=has_diff::$has_diff"
      - uses: actions/upload-artifact@v2
        if: ${{ steps.check-diff.outputs.has_diff == 'true' }}
        with:
          name: python.${{ github.run_id }}.diff
          path: python.diff
          if-no-files-found: error
          retention-days: 1

  ui:
    # Generate a patch to format files for MLflow UI.
    runs-on: ubuntu-latest
    needs: [check-comment, check-diff]
    if: ${{ needs.check-diff.outputs.ui_changed == 'true' }}
    outputs:
      has_diff: ${{ steps.check-diff.outputs.has_diff }}
    defaults:
      run:
        working-directory: mlflow/server/js
    steps:
      - uses: actions/checkout@v2
        with:
          repository: ${{ needs.check-comment.outputs.repository }}
          ref: ${{ needs.check-comment.outputs.ref }}
      - uses: actions/setup-node@v1
        with:
          node-version: 14.x
      - name: Install dependencies
        run: |
          npm i
      - run: |
          npm run lint:fix
      - run: |
          npm run extract-i18n
      - name: Check diff
        id: check-diff
        run: |
          git diff --output=ui.diff
          has_diff=$([[ -z "$(cat ui.diff)" ]] && echo "false" || echo "true")
          echo "::set-output name=has_diff::$has_diff"
      - uses: actions/upload-artifact@v2
        if: ${{ steps.check-diff.outputs.has_diff == 'true' }}
        with:
          name: ui.${{ github.run_id }}.diff
          path: mlflow/server/js/ui.diff
          if-no-files-found: error
          retention-days: 1

  apply-patches:
    # Apply the patches and commit changes to the PR branch.
    runs-on: ubuntu-latest
    needs: [check-comment, check-diff, python, ui]
    if: |
      always() &&
      (needs.python.result == 'success' && needs.python.outputs.has_diff == 'true') ||
      (needs.ui.result == 'success' && needs.ui.outputs.has_diff == 'true')
    steps:
      - uses: actions/checkout@v2
        with:
          repository: ${{ needs.check-comment.outputs.repository }}
          ref: ${{ needs.check-comment.outputs.ref }}
          # As described in the doc below, if we use `secrets.GITHUB_TOKEN`, a commit created by
          # this workflow will not trigger other workflows:
          # https://docs.github.com/en/actions/security-guides/automatic-token-authentication#using-the-github_token-in-a-workflow
          # To make it work, commit changes using the mlflow-automation bot (https://github.com/mlflow-automation).
          token: ${{ secrets.MLFLOW_AUTOMATION_TOKEN }}
      - uses: actions/download-artifact@v2
        if: ${{ needs.python.result == 'success' && needs.python.outputs.has_diff == 'true' }}
        with:
          name: python.${{ github.run_id }}.diff
          path: /tmp/patches
      - uses: actions/download-artifact@v2
        if: ${{ needs.ui.result == 'success' && needs.ui.outputs.has_diff == 'true' }}
        with:
          name: ui.${{ github.run_id }}.diff
          path: /tmp/patches
      - name: Apply patches
        run: |
          find /tmp/patches -maxdepth 1 -type f -name '*.diff' | xargs git apply --verbose
          git diff
      - name: Commit changes
        run: |
          git config --global user.name 'mlflow-automation'
          git config --global user.email 'mlflow-automation@users.noreply.github.com'
          run_url="https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
          git commit -sam "Autoformat: $run_url"
          git push

  update-status:
    runs-on: ubuntu-latest
    needs: [check-comment, check-diff, python, ui, apply-patches]
    if: ${{ always() && needs.check-comment.outputs.matched == 'true' }}
    steps:
      - uses: actions/checkout@v2
      - name: Update status
        uses: actions/github-script@v4
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const needs = ${{ toJson(needs) }};
            const sha = '${{ needs.check-comment.outputs.sha }}'
            const autoformat = require('./.github/workflows/autoformat.js');
            await autoformat.updateStatus(context, github, sha, needs);