.github/workflows/pr_limit.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.

# Limits the number of concurrently open pull requests a contributor
# without repository access can have. This mirrors GitHub's native
# "pull request creation cap" setting, which requires admin rights and
# so can only be configured for ASF repositories via .asf.yaml. Once
# https://github.com/apache/infrastructure-asfyaml/pull/111 is merged,
# this workflow can be replaced by the `github.pull_requests.creation_cap`
# directive in .asf.yaml.

name: PR Limit

on:
  pull_request_target:
    types:
      - opened
      - reopened

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

permissions:
  contents: read
  pull-requests: write
  issues: write
env:
  # Maximum number of open pull requests per contributor without repository
  # access. A pull request that takes the contributor over this limit is
  # closed with an explanatory comment.
  PR_LIMIT: 3

jobs:
  check:
    name: Check
    runs-on: ubuntu-latest
    steps:
      # Always run the script from main, never from the PR head.
      - uses: actions/checkout@v7
        with:
          repository: apache/arrow
          ref: main
          persist-credentials: false

      - name: Check open pull request count
        uses: actions/github-script@v9
        with:
          github-token: ${{ secrets.GITHUB_TOKEN }}
          script: |
            const script = require(`${process.env.GITHUB_WORKSPACE}/.github/workflows/pr_limit/check.js`);
            await script({github, context, core});