dev_pr.yml

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

name: dev_pr

concurrency:
  group: ${{ github.repository }}-${{ github.event.pull_request.number }}-${{ github.workflow }}
  cancel-in-progress: true

# Trigger whenever a PR is changed (title as well as new / changed commits)
on:
  pull_request_target:
    types:
      - opened
      - edited
      - synchronize

jobs:
  process:
    name: Process
    runs-on: ubuntu-slim
    permissions:
      contents: read
      pull-requests: write
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1  # v7.0.1

      - name: Assign GitHub labels
        if: |
          github.event_name == 'pull_request_target' &&
            (github.event.action == 'opened' ||
             github.event.action == 'synchronize')
        uses: actions/labeler@bf12e9b00b37c5c0ca2b87b79b2daf7891dbda13  # v7.0.0
        with:
          repo-token: ${{ secrets.GITHUB_TOKEN }}
          configuration-path: .github/workflows/dev_pr/labeler.yml
          sync-labels: true

  # Copy labels from linked issue if present, to help with changelog generation.
  # For simplicity we just run once on open and for first linked issue; its trivial
  # for maintainers to fix up the label manually for more complex cases.
  copy-issue-labels:
    name: Copy labels from (first) closing issue
    if: github.event.action == 'opened'
    needs: process
    runs-on: ubuntu-slim
    permissions:
      issues: read
      pull-requests: write
    steps:
      - uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3  # v9.0.0
        with:
          script: |
            const { node } = await github.graphql(`
              query($id: ID!) {
                node(id: $id) {
                  ... on PullRequest {
                    closingIssuesReferences(first: 1) {
                      nodes { number repository { nameWithOwner } }
                    }
                  }
                }
              }
            `, { id: context.payload.pull_request.node_id });
            const issue = node?.closingIssuesReferences?.nodes[0];
            const repository = `${context.repo.owner}/${context.repo.repo}`.toLowerCase();
            // just in case its referencing an external repo
            if (!issue || issue.repository.nameWithOwner.toLowerCase() !== repository) return;
            const labels = await github.paginate(github.rest.issues.listLabelsOnIssue, {
              ...context.repo, issue_number: issue.number, per_page: 100,
            });
            // these ones impact changelog generation the most
            const allowedLabels = ['bug', 'enhancement', 'development-process', 'performance'];
            const labelsToCopy = labels.map(label => label.name).filter(name => allowedLabels.includes(name));
            if (labelsToCopy.length) {
              await github.rest.issues.addLabels({
                ...context.repo, issue_number: context.issue.number,
                labels: labelsToCopy,
              });
            }