reusable-build.yml

name: Cache Fsync
on:
  merge_group:
  schedule:
    - cron: "45 2 * * *" # 0245 UTC everyday
  workflow_dispatch:

env:
  IMAGE_NAME: fsync
  IMAGE_REGISTRY: ghcr.io/${{ github.repository_owner }}

concurrency:
  group: ${{ github.workflow }}-${{ github.ref || github.run_id }}-${{ inputs.fedora_version }}
  cancel-in-progress: true

jobs:
  build:
    name: fsync
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
    strategy:
      fail-fast: false
      matrix:
        fedora_version:
          - 39
          - 40
    steps:
      - name: Checkout Push to Registry action
        uses: actions/checkout@v4

      - name: Verify Akmods Image
        uses: EyeCantCU/cosign-action/verify@v0.2.2
        with:
          containers: akmods:fsync-40
          pubkey: https://raw.githubusercontent.com/ublue-os/akmods/main/cosign.pub
          registry: ghcr.io/ublue-os

      - name: Get Fsync Kernel Version
        id: Version
        uses: Wandalen/wretry.action@v3.5.0
        with:
          attempt_limit: 3
          attempt_delay: 15000
          command: |
            kernel_release=$(skopeo inspect docker://ghcr.io/ublue-os/akmods:fsync-40 | jq -r '.Labels["ostree.linux"] | split(".fc")[0]')
            kernel_major_minor_patch=$(echo "$kernel_release" | cut -d '.' -f 1)
            ver=$(skopeo inspect docker://registry.fedoraproject.com/fedora:${{ matrix.fedora_version }} | jq -r '.Labels["org.opencontainers.image.version"]')
            if [ -z "$ver" ] || [ "null" = "$ver" ]; then
              echo "inspected image version must not be empty or null"
              exit 1
            fi
            echo "version=$ver" >> $GITHUB_ENV
            echo "kernel_release=${kernel_release}" >> $GITHUB_ENV
            echo "kernel_major_minor_patch=${kernel_major_minor_patch}" >> $GITHUB_ENV

      - name: Checkout Push to Registry Action
        uses: actions/checkout@v4

      - name: Generate Tags
        id: generate_tags
        shell: bash
        run: |
          tag=${{ env.kernel_major_minor_patch }}-fc${{ matrix.fedora_version }}
          COMMIT_TAGS=()
          COMMIT_TAGS+=("pr-${{ github.event_number }}-${tag}")
          COMMIT_TAGS+=("${GITHUB_SHA::7}-${tag}")

          BUILD_TAG=(${tag})
          if [[ "${{ github.event_name }}" == "pull_request" ]]; then
              echo "Generated the following commit tags: "
              for TAG in "${COMMIT_TAGS[@]}"; do
                  echo "${TAG}"
              done

              alias_tags=("${COMMIT_TAGS[@]}")
          else
              alias_tags=("${BUILD_TAGS[@]}")
          fi

          echo "Generated the following build tags: "
          for TAG in "${BUILD_TAGS[@]}"; do
              echo "${TAG}"
          done

          echo "alias_tags=${alias_tags[*]}" >> $GITHUB_OUTPUT

      - name: Pull Image
        uses: Wandalen/wrety.action@v3.5.0
        with:
          attempt_limit: 3
          attempt_delay: 15000
          command: |
            podman pull registry.fedoraproject.com/fedora:${{ matrix.fedora_version }}
            pomdan pull scratch

      - name: Build Metadata
        uses: docker/metadata-action@v5
        id: meta
        with:
          images: |
            ${{ env.IMAGE_NAME }}
          labels: |
            org.opencontainers.image.title=${{ env.IMAGE_NAME }}
            org.opencontainers.image.description=A caching layer for sentry/kernel-fsync fsync kernel's
            org.opencontainers.image.version=${{ env.version }}
            ostree.linux=${{ env.kernel_major_minor_patch }}.fc${{ matrix.fedora_version }}.x86_64
            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/main/README.md
            io.artifacthub.package.logo-url=https://avatars.githubusercontent.com/u/1728152?s=200&v=4

      - name: Build Image
        id: build_image
        uses: redhat-actions/buildah-build@v2
        with:
          containerfiles: |
            ./Containerfile
          image: ${{ env.IMAGE_NAME }}
          tags: ${{ steps.generate_tags.outputs.build_tags }}
          build-args: |
            FEDORA_VERSION=${{ matrix.fedora_version }}
            KERNEL_VERSION=${{ env.kernel_major_minor_patch }}
          labels: ${{ steps.meta.outputs.labels }}
          oci: false

      - name: Lowercase Registry
        id: registry_case
        uses: ASzc/change-string-case-action@v6
        with:
          string: ${{ env.IMAGE_REGISTRY }}

      - name: Push to GHCR
        uses: Wandalen/wretry.action@v3.5.0
        id: push
        if: github.event_name != 'pull_request'
        env:
          REGISTRY_USER: ${{ github.actor }}
          REGISTRY_PASSWORD: ${{ github.token }}
        with:
          action: redhat-actions/push-to-registry@v2
          attempt_limit: 3
          attempt_delay: 15000
          with: |
            image: ${{ steps.build_image.outputs.image }}
            tags: ${{ steps.build_image.outputs.tags }}
            registry: ${{ steps.registry_case.outputs.lowercase }}
            username: ${{ env.REGISTRY_USER }}
            password: ${{ env.REGISTRY_PASSWORD }}
            extra-args: |
              --disable-content-trust
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        if: github.event_name != 'pull_request'
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Sign container
      - uses: sigstore/cosign-installer@v3.5.0
        if: github.event_name != 'pull_request'

      - name: Sign container image
        if: github.event_name != 'pull_request'
        run: |
          cosign sign -y --key env://COSIGN_PRIVATE_KEY ${{ steps.registry_case.outputs.lowercase }}/${{ steps.build_image.outputs.image }}@${TAGS}
        env:
          TAGS: ${{ steps.push.outputs.outputs && fromJSON(steps.push.outputs.outputs).digest }}
          COSIGN_EXPERIMENTAL: false
          COSIGN_PRIVATE_KEY: ${{ secrets.SIGNING_SECRET }}

      - name: Echo outputs
        if: github.event_name != 'pull_request'
        run: |
          echo "${{ toJSON(steps.push.outputs) }}"

  check:
    name: Check all builds successful
    runs-on: ubuntu-latest
    needs: [build]
    steps:
      - name: Exit on failure
        if: ${{ needs.build.result == 'failure' }}
        shell: bash
        run: exit 1
      - name: Exit
        shell: bash
        run: exit 0