# This workflow uses actions that are not certified by GitHub.
# They are provided by a third-party and are governed by
# separate terms of service, privacy policy, and support
# documentation.

# GitHub recommends pinning actions to a commit SHA.
# To get a newer version, you will need to update the SHA.
# You can also reference a tag or branch, but the action may change without warning.

name: Publish Docker image

on:
  workflow_dispatch: # allows manual triggering
    inputs:
      skip_s390x:
        description: "Skip the s390x build target (useful for fast test runs that do not need the IBM Z runner)"
        type: boolean
        default: false
  schedule:
    # Rebuild daily rather than on every push because it is expensive
    - cron: '12 4 * * *'

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

# Fine-grant permission
# https://docs.github.com/en/actions/security-for-github-actions/security-guides/automatic-token-authentication#modifying-the-permissions-for-the-github_token
permissions:
  packages: write

jobs:
  create_tag:
    name: Create and push git tag
    runs-on: ubuntu-slim
    permissions:
      contents: write
    outputs:
      source_tag: ${{ steps.srctag.outputs.name }}

    steps:
      - name: Clone
        id: checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Determine source tag name
        id: srctag
        uses: ./.github/actions/get-tag-name
        env:
          BRANCH_NAME: ${{ github.head_ref || github.ref_name }}

      - name: Create and push git tag
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          git tag ${{ steps.srctag.outputs.name }} || exit 0
          git push origin ${{ steps.srctag.outputs.name }} || exit 0

  prepare_matrices:
    name: Prepare Docker matrices
    runs-on: ubuntu-24.04
    outputs:
      build_matrix: ${{ steps.matrices.outputs.build_matrix }}
      merge_matrix: ${{ steps.matrices.outputs.merge_matrix }}

    steps:
      - name: Generate build and merge matrices
        id: matrices
        shell: bash
        env:
          SKIP_S390X: ${{ inputs.skip_s390x || 'false' }}
        run: |
          set -euo pipefail

          # Keep all build targets in one place and derive merge targets from it.
          cat > build-matrix.json <<'JSON'
          [
            { "tag": "cpu", "dockerfile": ".devops/cpu.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04" },
            { "tag": "cpu", "dockerfile": ".devops/cpu.Dockerfile", "platforms": "linux/arm64", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04-arm" },
            { "tag": "cpu", "dockerfile": ".devops/s390x.Dockerfile", "platforms": "linux/s390x", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04-s390x" },
            { "tag": "cuda cuda12", "dockerfile": ".devops/cuda.Dockerfile", "cuda_version": "12.8.1", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04" },
            { "tag": "cuda cuda12", "dockerfile": ".devops/cuda.Dockerfile", "cuda_version": "12.8.1", "platforms": "linux/arm64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04-arm" },
            { "tag": "cuda13", "dockerfile": ".devops/cuda.Dockerfile", "cuda_version": "13.3.0", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04" },
            { "tag": "cuda13", "dockerfile": ".devops/cuda.Dockerfile", "cuda_version": "13.3.0", "platforms": "linux/arm64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04-arm" },
            { "tag": "musa", "dockerfile": ".devops/musa.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04" },
            { "tag": "intel", "dockerfile": ".devops/intel.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04" },
            { "tag": "vulkan", "dockerfile": ".devops/vulkan.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04" },
            { "tag": "vulkan", "dockerfile": ".devops/vulkan.Dockerfile", "platforms": "linux/arm64", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04-arm" },
            { "tag": "rocm", "dockerfile": ".devops/rocm.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": true, "runs_on": "ubuntu-24.04" },
            { "tag": "openvino", "dockerfile": ".devops/openvino.Dockerfile", "platforms": "linux/amd64", "full": true, "light": true, "server": true, "free_disk_space": false, "runs_on": "ubuntu-24.04" }
          ]
          JSON

          if [ "${SKIP_S390X}" = "true" ]; then
            jq 'map(select(.platforms != "linux/s390x"))' build-matrix.json > build-matrix.json.tmp
            mv build-matrix.json.tmp build-matrix.json
          fi

          BUILD_MATRIX="$(jq -c . build-matrix.json)"
          MERGE_MATRIX="$(jq -c '
            reduce .[] as $entry ({}; .[$entry.tag] |= (
              . // {
                tag: $entry.tag,
                arches: [],
                full: false,
                light: false,
                server: false
              }
              | .full = (.full or ($entry.full // false))
              | .light = (.light or ($entry.light // false))
              | .server = (.server or ($entry.server // false))
              | .arches += [($entry.platforms | sub("^linux/"; ""))]
            ))
            # Backward compatibility: s390x tags are aliases of cpu for the linux/s390x platform.
            | if (has("cpu") and (((.cpu.arches // []) | index("s390x")) != null)) then
                . + {
                  s390x: {
                    tag: "s390x",
                    arches: ["s390x"],
                    full: .cpu.full,
                    light: .cpu.light,
                    server: .cpu.server
                  }
                }
              else
                .
              end
            | [.[] | .arches = (.arches | unique | sort | join(" "))]
          ' build-matrix.json)"

          echo "build_matrix=$BUILD_MATRIX" >> "$GITHUB_OUTPUT"
          echo "merge_matrix=$MERGE_MATRIX" >> "$GITHUB_OUTPUT"

  push_to_registry:
    name: Push Docker image to Docker Registry
    needs: [prepare_matrices, create_tag]

    runs-on: ${{ matrix.config.runs_on }}
    strategy:
      fail-fast: false
      matrix:
        config: ${{ fromJSON(needs.prepare_matrices.outputs.build_matrix) }}
    steps:
      - name: Check out the repo
        id: checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0
          ref: ${{ needs.create_tag.outputs.source_tag }}

      - name: Set up QEMU
        if: ${{ contains(matrix.config.platforms, 'linux/amd64') }}
        uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4
        with:
          image: tonistiigi/binfmt:qemu-v10.2.1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4

      - name: Log in to Docker Registry
        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Determine image metadata
        id: meta
        shell: bash
        run: |
          set -euo pipefail

          REPO_OWNER="${GITHUB_REPOSITORY_OWNER@L}"  # to lower case
          REPO_NAME="${{ github.event.repository.name }}"
          IMAGE_REPO="ghcr.io/${REPO_OWNER}/${REPO_NAME}"
          PREFIX="${IMAGE_REPO}:"
          PLATFORM="${{ matrix.config.platforms }}"
          ARCH_SUFFIX="${PLATFORM#linux/}"

          # list all tags possible
          tags="${{ matrix.config.tag }}"
          for tag in $tags; do
              if [[ "$tag" == "cpu" ]]; then
                  TYPE=""
              else
                  TYPE="-$tag"
              fi
              CACHETAG="${PREFIX}buildcache${TYPE}-${ARCH_SUFFIX}"
          done

          SAFE_TAGS="$(echo "$tags" | tr ' ' '_')"

          echo "image_repo=$IMAGE_REPO" >> $GITHUB_OUTPUT
          echo "arch_suffix=$ARCH_SUFFIX" >> $GITHUB_OUTPUT
          echo "cache_output_tag=$CACHETAG" >> $GITHUB_OUTPUT
          echo "digest_artifact_suffix=${SAFE_TAGS}-${ARCH_SUFFIX}" >> $GITHUB_OUTPUT
          echo "cache_output_tag=$CACHETAG"  # print out for debugging
        env:
          GITHUB_REPOSITORY_OWNER: '${{ github.repository_owner }}'

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

      - name: Free Disk Space (Ubuntu)
        if: ${{ matrix.config.free_disk_space == true }}
        uses: ggml-org/free-disk-space@v1.3.1
        with:
          # this might remove tools that are actually needed,
          # if set to "true" but frees about 6 GB
          tool-cache: false

          # all of these default to true, but feel free to set to
          # "false" if necessary for your workflow
          android: true
          dotnet: true
          haskell: true
          large-packages: true
          docker-images: true
          swap-storage: true

      - name: Build and push Full Docker image by digest
        id: build_full
        if: ${{ (github.event_name == 'push' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') && matrix.config.full == true }}
        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
        with:
          context: .
          platforms: ${{ matrix.config.platforms }}
          outputs: type=image,name=${{ steps.meta.outputs.image_repo }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
          file: ${{ matrix.config.dockerfile }}
          target: full
          provenance: false
          build-args: |
            BUILD_DATE=${{ steps.build_date.outputs.date }}
            APP_VERSION=${{ needs.create_tag.outputs.source_tag }}
            APP_REVISION=${{ steps.checkout.outputs.commit }}
            IMAGE_URL=${{ github.server_url }}/${{ github.repository }}
            IMAGE_SOURCE=${{ github.server_url }}/${{ github.repository }}
            ${{ matrix.config.ubuntu_version && format('UBUNTU_VERSION={0}', matrix.config.ubuntu_version) || '' }}
            ${{ matrix.config.cuda_version && format('CUDA_VERSION={0}', matrix.config.cuda_version) || '' }}
          annotations: |
            manifest:org.opencontainers.image.created=${{ steps.build_date.outputs.date }}
            manifest:org.opencontainers.image.version=${{ needs.create_tag.outputs.source_tag }}
            manifest:org.opencontainers.image.revision=${{ steps.checkout.outputs.commit }}
            manifest:org.opencontainers.image.title=llama.cpp
            manifest:org.opencontainers.image.description=LLM inference in C/C++
            manifest:org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}
            manifest:org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
          # using github experimental cache
          #cache-from: type=gha
          #cache-to: type=gha,mode=max
          # return to this if the experimental github cache is having issues
          #cache-to: type=local,dest=/tmp/.buildx-cache
          #cache-from: type=local,src=/tmp/.buildx-cache
          # using registry cache (no storage limit)
          cache-from: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }}
          cache-to: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }},mode=max

      - name: Build and push Light Docker image by digest
        id: build_light
        if: ${{ (github.event_name == 'push' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') && matrix.config.light == true }}
        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
        with:
          context: .
          platforms: ${{ matrix.config.platforms }}
          outputs: type=image,name=${{ steps.meta.outputs.image_repo }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
          file: ${{ matrix.config.dockerfile }}
          target: light
          provenance: false
          build-args: |
            BUILD_DATE=${{ steps.build_date.outputs.date }}
            APP_VERSION=${{ needs.create_tag.outputs.source_tag }}
            APP_REVISION=${{ steps.checkout.outputs.commit }}
            IMAGE_URL=${{ github.server_url }}/${{ github.repository }}
            IMAGE_SOURCE=${{ github.server_url }}/${{ github.repository }}
            ${{ matrix.config.ubuntu_version && format('UBUNTU_VERSION={0}', matrix.config.ubuntu_version) || '' }}
            ${{ matrix.config.cuda_version && format('CUDA_VERSION={0}', matrix.config.cuda_version) || '' }}
          annotations: |
            manifest:org.opencontainers.image.created=${{ steps.build_date.outputs.date }}
            manifest:org.opencontainers.image.version=${{ needs.create_tag.outputs.source_tag }}
            manifest:org.opencontainers.image.revision=${{ steps.checkout.outputs.commit }}
            manifest:org.opencontainers.image.title=llama.cpp
            manifest:org.opencontainers.image.description=LLM inference in C/C++
            manifest:org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}
            manifest:org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
          # using github experimental cache
          #cache-from: type=gha
          #cache-to: type=gha,mode=max
          # return to this if the experimental github cache is having issues
          #cache-to: type=local,dest=/tmp/.buildx-cache
          #cache-from: type=local,src=/tmp/.buildx-cache
          # using registry cache (no storage limit)
          cache-from: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }}
          cache-to: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }},mode=max

      - name: Build and push Server Docker image by digest
        id: build_server
        if: ${{ (github.event_name == 'push' || github.event_name == 'schedule' || github.event_name == 'workflow_dispatch') && matrix.config.server == true }}
        uses: docker/build-push-action@d08e5c354a6adb9ed34480a06d141179aa583294 # v7
        with:
          context: .
          platforms: ${{ matrix.config.platforms }}
          outputs: type=image,name=${{ steps.meta.outputs.image_repo }},push-by-digest=true,name-canonical=true,push=true,oci-mediatypes=true
          file: ${{ matrix.config.dockerfile }}
          target: server
          provenance: false
          build-args: |
            BUILD_DATE=${{ steps.build_date.outputs.date }}
            APP_VERSION=${{ needs.create_tag.outputs.source_tag }}
            APP_REVISION=${{ steps.checkout.outputs.commit }}
            IMAGE_URL=${{ github.server_url }}/${{ github.repository }}
            IMAGE_SOURCE=${{ github.server_url }}/${{ github.repository }}
            ${{ matrix.config.ubuntu_version && format('UBUNTU_VERSION={0}', matrix.config.ubuntu_version) || '' }}
            ${{ matrix.config.cuda_version && format('CUDA_VERSION={0}', matrix.config.cuda_version) || '' }}
          annotations: |
            manifest:org.opencontainers.image.created=${{ steps.build_date.outputs.date }}
            manifest:org.opencontainers.image.version=${{ needs.create_tag.outputs.source_tag }}
            manifest:org.opencontainers.image.revision=${{ steps.checkout.outputs.commit }}
            manifest:org.opencontainers.image.title=llama.cpp
            manifest:org.opencontainers.image.description=LLM inference in C/C++
            manifest:org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}
            manifest:org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
          # using github experimental cache
          #cache-from: type=gha
          #cache-to: type=gha,mode=max
          # return to this if the experimental github cache is having issues
          #cache-to: type=local,dest=/tmp/.buildx-cache
          #cache-from: type=local,src=/tmp/.buildx-cache
          # using registry cache (no storage limit)
          cache-from: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }}
          cache-to: type=registry,ref=${{ steps.meta.outputs.cache_output_tag }},mode=max

      - name: Export digest metadata
        shell: bash
        run: |
            set -euo pipefail

            TAGS="${{ matrix.config.tag }}"
            ARCH_SUFFIX="${{ steps.meta.outputs.arch_suffix }}"
            DIGEST_FILE="/tmp/digests/${{ steps.meta.outputs.digest_artifact_suffix }}.tsv"
            mkdir -p /tmp/digests

            add_digest_rows() {
                local image_type="$1"
                local digest="$2"

                if [[ -z "$digest" ]]; then
                  echo "Missing digest for image_type=${image_type}" >&2
                  exit 1
                fi

                for tag in $TAGS; do
                    printf '%s\t%s\t%s\t%s\n' "$tag" "$ARCH_SUFFIX" "$image_type" "$digest" >> "$DIGEST_FILE"
                done
            }

            if [[ "${{ matrix.config.full }}" == "true" ]]; then
                add_digest_rows "full" "${{ steps.build_full.outputs.digest }}"
            fi

            if [[ "${{ matrix.config.light }}" == "true" ]]; then
                add_digest_rows "light" "${{ steps.build_light.outputs.digest }}"
            fi

            if [[ "${{ matrix.config.server }}" == "true" ]]; then
                add_digest_rows "server" "${{ steps.build_server.outputs.digest }}"
            fi

      - name: Upload digest metadata
        uses: actions/upload-artifact@bbbca2ddaa5d8feaa63e36b76fdaad77386f024f # v7
        with:
          name: digests-${{ steps.meta.outputs.digest_artifact_suffix }}
          path: /tmp/digests/${{ steps.meta.outputs.digest_artifact_suffix }}.tsv
          if-no-files-found: error

  merge_arch_tags:
    name: Create shared tags from digests
    needs: [prepare_matrices, push_to_registry, create_tag]
    runs-on: ubuntu-24.04
    strategy:
      fail-fast: false
      matrix:
        config: ${{ fromJSON(needs.prepare_matrices.outputs.merge_matrix) }}

    steps:
      - name: Check out the repo
        id: checkout
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

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

      - name: Download digest metadata
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
        with:
          pattern: digests-*
          path: /tmp/digests
          merge-multiple: true

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@4d04d5d9486b7bd6fa91e7baf45bbb4f8b9deedd # v4

      - name: Log in to Docker Registry
        uses: docker/login-action@b45d80f862d83dbcd57f89517bcf500b2ab88fb2 # v4
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Create tags from digests
        shell: bash
        run: |
          set -euo pipefail

          REPO_OWNER="${GITHUB_REPOSITORY_OWNER@L}"  # to lower case
          REPO_NAME="${{ github.event.repository.name }}"
          IMAGE_REPO="ghcr.io/${REPO_OWNER}/${REPO_NAME}"
          PREFIX="${IMAGE_REPO}:"
          SRC_TAG="${{ needs.create_tag.outputs.source_tag }}"
          BUILD_DATE="${{ steps.build_date.outputs.date }}"
          COMMIT_SHA="${{ steps.checkout.outputs.commit }}"
          TAGS="${{ matrix.config.tag }}"
          ARCHES="${{ matrix.config.arches }}"
          DIGEST_GLOB="/tmp/digests/*.tsv"

          if ! ls ${DIGEST_GLOB} >/dev/null 2>&1; then
              echo "No digest metadata found in /tmp/digests" >&2
              exit 1
          fi

          if [[ -z "$SRC_TAG" ]]; then
              echo "Missing source tag from create_tag" >&2
              exit 1
          fi

          find_digest() {
              local tag_name="$1"
              local arch="$2"
              local image_type="$3"
              local digest

              digest="$(awk -F '\t' -v t="$tag_name" -v a="$arch" -v i="$image_type" '$1 == t && $2 == a && $3 == i { print $4; exit }' ${DIGEST_GLOB})"

              # Backward compatibility: s390x tags are aliases of cpu for the linux/s390x platform.
              if [[ -z "$digest" && "$tag_name" == "s390x" && "$arch" == "s390x" ]]; then
                digest="$(awk -F '\t' -v t="cpu" -v a="$arch" -v i="$image_type" '$1 == t && $2 == a && $3 == i { print $4; exit }' ${DIGEST_GLOB})"
              fi

              if [[ -z "$digest" ]]; then
                echo "Missing digest for tag=${tag_name} arch=${arch} image_type=${image_type}" >&2
                exit 1
              fi

              echo "$digest"
          }

          create_manifest_tags() {
              local image_type="$1"
              local tag_name="$2"
              local suffix="$3"

              local merged_tag="${PREFIX}${image_type}${suffix}"
              local merged_versioned_tag="${merged_tag}-${SRC_TAG}"

              local refs=()

              for arch in $ARCHES; do
                  local digest
                  digest="$(find_digest "$tag_name" "$arch" "$image_type")"
                  refs+=("${IMAGE_REPO}@${digest}")
              done

              local annotations=(
                  --annotation "index:org.opencontainers.image.created=${BUILD_DATE}"
                  --annotation "index:org.opencontainers.image.version=${SRC_TAG}"
                  --annotation "index:org.opencontainers.image.revision=${COMMIT_SHA}"
                  --annotation "index:org.opencontainers.image.title=llama.cpp"
                  --annotation "index:org.opencontainers.image.description=LLM inference in C/C++"
                  --annotation "index:org.opencontainers.image.url=${{ github.server_url }}/${{ github.repository }}"
                  --annotation "index:org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}"
              )

              echo "Creating ${merged_tag} from ${refs[*]}"
              docker buildx imagetools create "${annotations[@]}" --tag "${merged_tag}" "${refs[@]}"

              echo "Creating ${merged_versioned_tag} from ${refs[*]}"
              docker buildx imagetools create "${annotations[@]}" --tag "${merged_versioned_tag}" "${refs[@]}"
          }

          for tag in $TAGS; do
              if [[ "$tag" == "cpu" ]]; then
                  TYPE=""
              else
                  TYPE="-$tag"
              fi

              if [[ "${{ matrix.config.full }}" == "true" ]]; then
                  create_manifest_tags "full" "$tag" "$TYPE"
              fi

              if [[ "${{ matrix.config.light }}" == "true" ]]; then
                  create_manifest_tags "light" "$tag" "$TYPE"
              fi

              if [[ "${{ matrix.config.server }}" == "true" ]]; then
                  create_manifest_tags "server" "$tag" "$TYPE"
              fi
          done
        env:
          GITHUB_REPOSITORY_OWNER: '${{ github.repository_owner }}'
