release.yaml

name: Release

on:
  push:
    branches: [main]
  workflow_dispatch: {}

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

permissions:
  contents: read

env:
  GO_VERSION: "1.26"
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  # Release Please runs on every push to main. When a release PR is merged,
  # it creates a GitHub Release + tag and sets release_created=true, which
  # triggers the downstream release jobs in this same workflow run.
  # This avoids the GITHUB_TOKEN limitation where tags created by Actions
  # do not trigger separate tag-push workflows.
  release-please:
    name: Release Please
    if: github.event_name == 'push'
    runs-on: ubuntu-latest
    timeout-minutes: 10
    permissions:
      contents: write
      pull-requests: write
    outputs:
      release_created: ${{ steps.release.outputs.release_created }}
      tag_name: ${{ steps.release.outputs.tag_name }}
    steps:
      - uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
        with:
          egress-policy: audit
      - uses: googleapis/release-please-action@5c625bfb5d1ff62eadeeb3772007f7f66fdcf071 # v4
        id: release
        with:
          config-file: release-please-config.json
          manifest-file: .release-please-manifest.json

  release:
    name: Release
    needs: [release-please]
    # Run when release-please created a release, OR on manual workflow_dispatch
    # with a tag ref. always() is needed because release-please is skipped on
    # workflow_dispatch, which would otherwise skip this job too.
    if: |-
      always() &&
      !failure() &&
      !cancelled() &&
      (needs.release-please.outputs.release_created == 'true' ||
       (github.event_name == 'workflow_dispatch' && startsWith(github.ref, 'refs/tags/')))
    runs-on: ubuntu-latest
    timeout-minutes: 30
    environment: release
    permissions:
      attestations: write
      contents: write
      packages: write
      id-token: write
    outputs:
      hashes: ${{ steps.hash.outputs.hashes }}
      digest: ${{ steps.build.outputs.digest }}
      tag: ${{ steps.tag.outputs.name }}
    steps:
      - uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
        with:
          egress-policy: audit

      - name: Resolve release tag
        id: tag
        shell: bash
        run: |
          # On release-please: use its output. On workflow_dispatch: use the ref.
          TAG="${{ needs.release-please.outputs.tag_name || github.ref_name }}"
          echo "name=${TAG}" >> "$GITHUB_OUTPUT"
          echo "Releasing: ${TAG}"

      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
        with:
          fetch-depth: 0
          ref: ${{ steps.tag.outputs.name }}

      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
        with:
          go-version: ${{ env.GO_VERSION }}
          cache: true

      - name: Login to GHCR
        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Login to Docker Hub
        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4

      - name: Capture build date
        id: build_date
        run: echo "date=$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> "$GITHUB_OUTPUT"

      - name: Run GoReleaser
        uses: goreleaser/goreleaser-action@5daf1e915a5f0af01ddbcd89a43b8061ff4f1a89 # v7.2.2
        with:
          version: "~> v2"
          args: release --clean
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Generate provenance subjects
        id: hash
        shell: bash -Eeuo pipefail {0}
        run: |
          echo "hashes=$(cat goreleaser-dist/checksums.txt | base64 -w0)" >> "$GITHUB_OUTPUT"

      - name: Build and push multi-arch image
        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
        id: build
        with:
          context: .
          platforms: linux/amd64,linux/arm64,linux/arm/v7,linux/ppc64le,linux/s390x
          push: true
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.name }}
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
            docker.io/attuneio/attune:${{ steps.tag.outputs.name }}
            docker.io/attuneio/attune:latest
          build-args: |
            VERSION=${{ steps.tag.outputs.name }}
            COMMIT=${{ github.sha }}
            DATE=${{ steps.build_date.outputs.date }}
          labels: |
            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.version=${{ steps.tag.outputs.name }}

      - name: Install cosign
        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2

      - name: Sign GHCR image
        shell: bash -Eeuo pipefail -x {0}
        run: |
          cosign sign --yes \
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }}

      - name: Sign Docker Hub image
        shell: bash -Eeuo pipefail -x {0}
        run: |
          cosign sign --yes \
            docker.io/attuneio/attune@${{ steps.build.outputs.digest }}

      - name: Attest container image
        uses: actions/attest-build-provenance@e8998f949152b193b063cb0ec769d69d929409be # v2
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.build.outputs.digest }}
          push-to-registry: true

      - name: Generate SBOM
        uses: anchore/sbom-action@e22c389904149dbc22b58101806040fa8d37a610 # v0
        with:
          image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }}
          format: spdx-json
          output-file: sbom.spdx.json

      - name: Trivy scan released image
        uses: aquasecurity/trivy-action@ed142fd0673e97e23eac54620cfb913e5ce36c25 # v0.36.0
        with:
          image-ref: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@${{ steps.build.outputs.digest }}
          severity: HIGH,CRITICAL
          exit-code: 1

      - name: Generate install manifest and CRDs bundle
        shell: bash -Eeuo pipefail -x {0}
        run: |
          make build-installer IMG=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.tag.outputs.name }}
          make build-crds

      - name: Attach install manifest, CRDs, and SBOM to release
        uses: softprops/action-gh-release@b4309332981a82ec1c5618f44dd2e27cc8bfbfda # v3
        with:
          files: |
            dist/install.yaml
            dist/crds.yaml
            sbom.spdx.json

      # Krew manifest update runs last with continue-on-error so a Krew
      # failure never blocks Docker images, signatures, or provenance.
      - name: Update Krew plugin manifest
        continue-on-error: true
        uses: rajatjindal/krew-release-bot@c970b8a8f6dbc2f2285a26e3ae160903b87002c3 # v0.0.51
        with:
          krew_plugin_release_tag: ${{ steps.tag.outputs.name }}

  helm-release:
    name: Helm Chart Release
    runs-on: ubuntu-latest
    timeout-minutes: 10
    needs: [release]
    # Explicit condition required: release-please is skipped on workflow_dispatch,
    # and GitHub Actions propagates skips transitively through the needs chain.
    # Without this, downstream jobs are skipped even when release succeeded.
    if: ${{ !cancelled() && needs.release.result == 'success' }}
    permissions:
      contents: read
      packages: write
      id-token: write
    steps:
      - uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
        with:
          egress-policy: audit
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
        with:
          ref: ${{ needs.release.outputs.tag }}

      - uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5
        with:
          version: v4.1.4

      - name: Login to GHCR (Helm)
        shell: bash -Eeuo pipefail -x {0}
        run: |
          echo "${{ secrets.GITHUB_TOKEN }}" | helm registry login ${{ env.REGISTRY }} \
            --username ${{ github.actor }} --password-stdin

      - name: Login to GHCR (Docker/cosign)
        uses: docker/login-action@650006c6eb7dba73a995cc03b0b2d7f5ca915bee # v4.2.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Login to Docker Hub (Helm)
        shell: bash -Eeuo pipefail -x {0}
        run: |
          echo "${{ secrets.DOCKERHUB_TOKEN }}" | helm registry login registry-1.docker.io \
            --username ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin

      - name: Package and push Helm chart
        shell: bash -Eeuo pipefail -x {0}
        run: |
          # Update chart version to match tag
          VERSION="${{ needs.release.outputs.tag }}"
          VERSION="${VERSION#v}"  # Strip 'v' prefix
          sed -i "s/^version:.*/version: ${VERSION}/" charts/attune/Chart.yaml
          sed -i "s/^appVersion:.*/appVersion: ${VERSION}/" charts/attune/Chart.yaml

          helm package charts/attune
          helm push attune-${VERSION}.tgz oci://${{ env.REGISTRY }}/${{ github.repository_owner }}/charts
          helm push attune-${VERSION}.tgz oci://registry-1.docker.io/attuneio

      - name: Install cosign
        uses: sigstore/cosign-installer@6f9f17788090df1f26f669e9d70d6ae9567deba6 # v4.1.2

      - name: Sign Helm chart (GHCR)
        shell: bash -Eeuo pipefail -x {0}
        run: |
          VERSION="${{ needs.release.outputs.tag }}"
          VERSION="${VERSION#v}"
          cosign sign --yes \
            ${{ env.REGISTRY }}/${{ github.repository_owner }}/charts/attune:${VERSION}

      - name: Sign Helm chart (Docker Hub)
        continue-on-error: true
        shell: bash -Eeuo pipefail -x {0}
        run: |
          VERSION="${{ needs.release.outputs.tag }}"
          VERSION="${VERSION#v}"
          cosign sign --yes \
            docker.io/attuneio/attune:${VERSION}

      - name: Push Artifact Hub metadata
        shell: bash -Eeuo pipefail -x {0}
        run: |
          # Install ORAS CLI
          ORAS_VERSION="1.3.2"
          curl -sLO "https://github.com/oras-project/oras/releases/download/v${ORAS_VERSION}/oras_${ORAS_VERSION}_linux_amd64.tar.gz"
          tar -xzf "oras_${ORAS_VERSION}_linux_amd64.tar.gz" oras
          chmod +x oras

          # Push artifacthub-repo.yml as OCI artifact for Verified Publisher status
          echo "${{ secrets.GITHUB_TOKEN }}" | ./oras login ${{ env.REGISTRY }} \
            --username ${{ github.actor }} --password-stdin
          ./oras push \
            ${{ env.REGISTRY }}/${{ github.repository_owner }}/charts/attune:artifacthub.io \
            --config /dev/null:application/vnd.cncf.artifacthub.config.v1+yaml \
            artifacthub-repo.yml:application/vnd.cncf.artifacthub.repository-metadata.layer.v1.yaml

  # SLSA Level 3 provenance for GoReleaser binary artifacts.
  # Runs as a reusable workflow (required for non-forgeable provenance).
  provenance:
    name: Binary Provenance
    needs: [release]
    if: ${{ !cancelled() && needs.release.result == 'success' }}
    permissions:
      actions: read
      id-token: write
      contents: write
    # NOTE: SLSA reusable workflows require tag refs (not SHA pins) for
    # self-verification of the builder binary.
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v2.1.0
    with:
      base64-subjects: "${{ needs.release.outputs.hashes }}"
      upload-assets: true

  # SLSA Level 3 provenance for the container image.
  container-provenance:
    name: Container Provenance
    needs: [release]
    if: ${{ !cancelled() && needs.release.result == 'success' }}
    permissions:
      actions: read
      id-token: write
      packages: write
    # NOTE: SLSA reusable workflows require tag refs (not SHA pins) for
    # self-verification of the builder binary.
    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@v2.1.0
    with:
      image: ghcr.io/${{ github.repository }}
      digest: ${{ needs.release.outputs.digest }}
      registry-username: ${{ github.actor }}
    secrets:
      registry-password: ${{ secrets.GITHUB_TOKEN }}

  # Sync docker/README.md to the Docker Hub repository description.
  dockerhub-readme:
    name: Docker Hub README
    runs-on: ubuntu-latest
    timeout-minutes: 5
    needs: [release]
    if: ${{ !cancelled() && needs.release.result == 'success' }}
    steps:
      - uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
        with:
          egress-policy: audit
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6

      - name: Update Docker Hub description
        uses: peter-evans/dockerhub-description@1b9a80c056b620d92cedb9d9b5a223409c68ddfa # v5.0.0
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: attuneio/attune
          readme-filepath: docker/README.md
          short-description: "Safe, in-place Kubernetes pod resource right-sizing. VPA done right."