.github/workflows/ci.yml

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name: CI

on:
  pull_request:
  push:
  workflow_dispatch:

permissions:
  contents: read

concurrency:
  group: ci-${{ github.event_name }}-${{ github.event.pull_request.number || github.ref }}
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

jobs:
  plan:
    name: Select tests and validate CI
    runs-on: ubuntu-latest
    timeout-minutes: 10
    outputs:
      java: ${{ steps.plan.outputs.java }}
      matrix: ${{ steps.plan.outputs.matrix }}
      python: ${{ steps.plan.outputs.python }}
      docs: ${{ steps.plan.outputs.docs }}
      licensing: ${{ steps.plan.outputs.licensing }}
    steps:
      - uses: actions/checkout@v6
        with:
          fetch-depth: 0
          persist-credentials: false
      - name: Test CI selection and Maven commands
        run: python3 -m unittest discover -s tools/ci -p 'test_*.py'
      - name: Validate workflow syntax
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          gh release download v1.7.11 --repo rhysd/actionlint \
            --pattern 'actionlint_1.7.11_linux_amd64.tar.gz' --dir "$RUNNER_TEMP"
          tar -xzf "$RUNNER_TEMP/actionlint_1.7.11_linux_amd64.tar.gz" -C "$RUNNER_TEMP" actionlint
          "$RUNNER_TEMP/actionlint" -shellcheck= -pyflakes=
      # The RAT scan takes seconds, so it runs on every change rather than in Licensing.
      - name: Check PyPaimon licensing
        run: ./paimon-python/dev/check-licensing.sh
      - name: Select affected tests and check changed file sizes
        id: plan
        run: python3 tools/ci/plan.py

  java:
    name: Java
    needs: plan
    if: needs.plan.outputs.java == 'true'
    uses: ./.github/workflows/ci-java.yml
    with:
      matrix: ${{ needs.plan.outputs.matrix }}

  python:
    name: Python
    needs: plan
    if: needs.plan.outputs.python == 'true'
    uses: ./.github/workflows/ci-python.yml

  docs:
    name: Documentation
    needs: plan
    if: needs.plan.outputs.docs == 'true'
    uses: ./.github/workflows/ci-docs.yml

  licensing:
    name: Licensing
    needs: plan
    if: needs.plan.outputs.licensing == 'true'
    uses: ./.github/workflows/ci-licensing.yml

  result:
    # Use this stable check for branch protection, not individual matrix jobs.
    name: CI result
    if: always()
    needs: [plan, java, python, docs, licensing]
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - name: Require all selected jobs to pass
        env:
          RESULTS: ${{ toJSON(needs) }}
        run: |
          python3 - <<'PYTHON'
          import json
          import os
          results = json.loads(os.environ['RESULTS'])
          if results['plan']['result'] != 'success':
              raise SystemExit('CI selection or validation failed')
          selected = results['plan']['outputs']
          for name in ('java', 'python', 'docs', 'licensing'):
              expected = 'success' if selected[name] == 'true' else 'skipped'
              if results[name]['result'] != expected:
                  raise SystemExit(name + ': ' + results[name]['result'] + ', expected ' + expected)
          PYTHON