.github/workflows/codeql.yml

name: CodeQL

on:
  pull_request:
  push:
    branches:
      - main
  schedule:
    # Weekly, matching the cadence of the default setup this replaces.
    - cron: '39 4 * * 1'

permissions:
  contents: read

jobs:
  analyze:
    name: Analyze (${{ matrix.language }})
    runs-on: ubuntu-latest
    permissions:
      security-events: write
      contents: read
    strategy:
      fail-fast: false
      matrix:
        include:
          - language: actions
            build-mode: none
          - language: java-kotlin
            build-mode: manual
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-java@v4
        if: matrix.build-mode == 'manual'
        with:
          java-version: 17
          distribution: 'zulu'
      - uses: gradle/actions/setup-gradle@48b5f213c81028ace310571dc5ec0fbbca0b2947 # v4
        if: matrix.build-mode == 'manual'
      - name: Initialize CodeQL
        uses: github/codeql-action/init@v4
        with:
          languages: ${{ matrix.language }}
          build-mode: ${{ matrix.build-mode }}
      # CodeQL's autobuild derives the JDK it runs Gradle on from the project's sourceCompatibility,
      # which is Java 8 here, while Gradle 9 requires JDK 17+ to even start. Building the project
      # ourselves keeps that JDK under our control.
      #
      # --no-build-cache forces compilation to actually happen: CodeQL builds its database by
      # observing javac and kotlinc, so a build cache hit would leave it with nothing to extract.
      - name: Build project
        if: matrix.build-mode == 'manual'
        run: ./gradlew assemble --no-build-cache --stacktrace
      # The analysis below is memory hungry, so don't leave the Gradle daemon holding onto a heap.
      - name: Stop Gradle daemon
        if: matrix.build-mode == 'manual'
        run: ./gradlew --stop
      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@v4
        with:
          category: "/language:${{ matrix.language }}"