release.yml

name: release
on:
  push:
    tags:
      - 'v*'
  workflow_dispatch:
    inputs:
      tag:
        description: 'image tag prefix'
        default: 'rc'
        required: true

permissions:
  contents: read

env:
  CONTROLLER: ${{ github.event.repository.name }}

jobs:
  release:
    outputs:
      image_url: ${{ steps.slsa.outputs.image_url }}
      image_digest: ${{ steps.slsa.outputs.image_digest }}
    runs-on: ubuntu-latest
    permissions:
      contents: write # for creating the GitHub release.
      id-token: write # for creating OIDC tokens for signing.
      packages: write # for pushing and signing container images.
    steps:
      - name: Checkout
        uses: actions/checkout@eef61447b9ff4aafe5dcd4e0bbf5d482be7e7871 # v4.2.1
      - name: Setup Kustomize
        uses: fluxcd/pkg/actions/kustomize@main
      - name: Setup Flux
        uses: fluxcd/flux2/action@5350425cdcd5fa015337e09fa502153c0275bd4b #v2.4.0
      - name: Prepare
        id: prep
        run: |
          VERSION="${{ github.event.inputs.tag }}-${GITHUB_SHA::8}"
          if [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF/refs\/tags\//}
          fi
          echo "BUILD_DATE=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" >> $GITHUB_OUTPUT
          echo "VERSION=${VERSION}" >> $GITHUB_OUTPUT
      - name: Setup QEMU
        uses: docker/setup-qemu-action@49b3bc8e6bdd4a60e6116a5414239cba5943d3cf # v3.2.0
      - name: Setup Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@c47758b77c9736f4b2ef4073d4d51994fabfe349 # v3.7.1
      - name: Login to GitHub Container Registry
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Generate images meta
        id: meta
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81 # v5.5.1
        with:
          images: |
            ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}
          tags: |
            type=raw,value=${{ steps.prep.outputs.VERSION }}
      - name: Publish images
        id: build-push
        uses: docker/build-push-action@4f58ea79222b3b9dc2c8bbdd6debcef730109a75 # v6.9.0
        with:
          sbom: true
          provenance: true
          push: true
          builder: ${{ steps.buildx.outputs.name }}
          context: .
          file: ./Dockerfile
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      - uses: sigstore/cosign-installer@dc72c7d5c4d10cd6bcb8cf6e3fd625a9e5e537da # v3.7.0
      - name: Sign images
        env:
          COSIGN_EXPERIMENTAL: 1
        run: |
          cosign sign --yes ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}@${{ steps.build-push.outputs.digest }}
      - name: Push and sign manifests
        if: startsWith(github.ref, 'refs/tags/v')
        env:
          COSIGN_EXPERIMENTAL: 1
        run: |
          set -euo pipefail
          
          make build-manifests
          
          img_digest=$(flux push artifact \
          oci://ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}-manifests:${{ steps.prep.outputs.VERSION }} \
          --path=disto \
          --source=${{ github.repositoryUrl }} \
          --revision="${{ github.ref_name }}@sha1:${{ github.sha }}" \
          --annotations='org.opencontainers.image.description=Flux Operator' \
          --output=json | jq -r '.digest')
          
          cosign sign --yes ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}-manifests@${img_digest}
          
          flux tag artifact oci://ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}-manifests:${{ steps.prep.outputs.VERSION }} --tag=latest
      - name: Create release
        if: startsWith(github.ref, 'refs/tags/v')
        shell: bash
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh release create ${{ github.ref_name }} --generate-notes --verify-tag
      - name: Upload release artifacts
        if: startsWith(github.ref, 'refs/tags/v')
        shell: bash
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          mkdir -p distro/flux-operator
          kustomize build config/default > distro/flux-operator/install.yaml
          gh release upload ${{ github.ref_name }} distro/flux-operator/install.yaml
      - name: Generate SLSA metadata
        id: slsa
        run: |          
          image_url=ghcr.io/controlplaneio-fluxcd/${{ env.CONTROLLER }}:${{ steps.prep.outputs.version }}
          echo "image_url=$image_url" >> $GITHUB_OUTPUT
          
          image_digest=${{ steps.build-push.outputs.digest }}
          echo "image_digest=$image_digest" >> $GITHUB_OUTPUT

  ghcr-provenance:
    needs: [release]
    permissions:
      actions: read # for detecting the Github Actions environment.
      id-token: write # for creating OIDC tokens for signing.
      packages: write # for uploading attestations.
    if: startsWith(github.ref, 'refs/tags/v')
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@v2.0.0
    with:
      image: ${{ needs.release.outputs.image_url }}
      digest: ${{ needs.release.outputs.image_digest }}
      registry-username: ${{ github.actor }}
    secrets:
      registry-password: ${{ secrets.GITHUB_TOKEN }}