release.yaml

name: Release

on:
  push:
    tags:
      - "*"

permissions:
  contents: write
  packages: write

jobs:
  prepare:
    name: Prepare
    runs-on: ubuntu-20.04
    outputs:
      kernel_versions: ${{ steps.kernel_versions.outputs.value }}
      target_arches: ${{ steps.target_arches.outputs.value }}
      version_tag: ${{ steps.version_tag.outputs.value }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Format version tag
        shell: bash
        id: version_tag
        run: |
          TAG=${GITHUB_REF#refs/*/}
          echo "value=$TAG" >> $GITHUB_OUTPUT
      - name: Build Kernel Versions
        id: kernel_versions
        run: |
          echo "value=$(cat KERNEL_VERSIONS | jq -ncR '[inputs | select(length>0)]')" >> $GITHUB_OUTPUT
      - name: Build Target Archs
        id: target_arches
        run: |
          echo "value=$(cat TARGET_ARCHES | jq -ncR '[inputs | select(length>0)]')" >> $GITHUB_OUTPUT

  build:
    name: Build
    runs-on: ubuntu-20.04
    needs: prepare
    strategy:
      matrix:
        version: ${{ fromJson(needs.prepare.outputs.kernel_versions) }}
        arch: ${{ fromJson(needs.prepare.outputs.target_arches) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: "Build Kernel Version: ${{ matrix.version }} Target Arch: ${{ matrix.arch }}"
        shell: bash
        run: |
          docker build --build-arg KERNEL_VERSION=${{ matrix.version }} \
            --build-arg ARCH="${{ matrix.arch }}" \
            --build-arg CROSS_COMPILE="${{ matrix.arch == 'arm64' && 'aarch64-linux-gnu-' || '' }}" \
            -t linux-headers:${{ matrix.arch }}-${{ matrix.version }} .
          docker run --rm -v ${{ github.workspace }}/builds:/output linux-headers:${{ matrix.arch }}-${{ matrix.version }}
      - name: Upload Artifact
        uses: actions/upload-artifact@v3
        with:
          path: ${{ github.workspace }}/builds/linux-headers-${{ matrix.arch }}-${{ matrix.version }}.tar.gz

  release:
    name: Release
    runs-on: ubuntu-20.04
    needs:
      - build
      - prepare
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Download Artifact
        uses: actions/download-artifact@v3
        with:
          path: ${{ github.workspace }}
      - name: Group by Arch and Compress
        shell: bash
        working-directory: ${{ github.workspace }}/artifact
        run: |
          ROOT_REPO=$(git rev-parse --show-toplevel)
          TARGET_ARCHES=($(cat $ROOT_REPO/TARGET_ARCHES))
          for arch in "${TARGET_ARCHES[@]}"; do
            tar -cvzf linux-headers-${arch}.tar.gz linux-headers-${arch}-*.tar.gz
            mv linux-headers-${arch}.tar.gz $ROOT_REPO
          done
      - name: Build Release Body
        shell: bash
        run: |
          kernel_versions=($(cat KERNEL_VERSIONS))
          md="## Support Kernel Version\n"
          for version in "${kernel_versions[@]}"; do
            md+="* $version\n"
          done

          target_arches=($(cat TARGET_ARCHES))
          md+="\n## Support Arch\n"
          for version in "${target_arches[@]}"; do
            md+="* $version\n"
          done
          echo -ne "$md" > ${{ github.workspace }}/body.md
      - uses: ncipollo/release-action@v1
        with:
          artifacts: "*.tar.gz"
          bodyFile: ${{ github.workspace }}/body.md
          tag: ${{ needs.prepare.outputs.version_tag }}