build-airgap-image-bundle.yml

name: "Build :: Airgap image bundle"

on:
  workflow_call:
    inputs:
      target-os:
        type: string
        description: The OS to build the airgap image bundle for.
      target-arch:
        type: string
        required: true
        description: The architecture to build the airgap image bundle for.
    outputs:
      cache-key:
        description: The airgap image bundle's cache key.
        value: ${{ jobs.build.outputs.cache-key }}

env:
  MAKEFLAGS: -j

jobs:
  build:
    name: "${{ inputs.target-os }}-${{ inputs.target-arch }}"
    runs-on: ubuntu-22.04

    env:
      TARGET_OS: ${{ inputs.target-os }}
      TARGET_ARCH: ${{ inputs.target-arch }}

    steps:
      - name: "Build :: Checkout"
        uses: actions/checkout@v4
        with:
          persist-credentials: false

      - name: "Download :: Airgap image list"
        uses: actions/download-artifact@v4
        with:
          name: airgap-image-list-${{ inputs.target-os }}-${{ inputs.target-arch }}

        # Capture the calculated image bundle source hash in a separate step, as
        # the hashFiles function is evaluated before the step execution. So all
        # the required files need to exist before that.
      - name: "Cache :: Airgap image bundle :: Calculate cache key"
        id: cache-airgap-image-bundle-calc-key
        env:
          HASH_VALUE: ${{ hashFiles('Makefile', 'airgap-images.txt', 'hack/image-bundler/*') }}
        run: |
          printf 'cache-key=build-airgap-image-bundle-%s-%s-%s\n' "$TARGET_OS" "$TARGET_ARCH" "$HASH_VALUE" >> "$GITHUB_OUTPUT"

      - name: "Cache :: Airgap image bundle"
        id: cache-airgap-image-bundle
        uses: actions/cache@v4
        with:
          key: ${{ steps.cache-airgap-image-bundle-calc-key.outputs.cache-key }}
          path: airgap-image-bundle-${{ inputs.target-os }}-${{ inputs.target-arch }}.tar

      - name: "Build :: Airgap image bundle"
        if: steps.cache-airgap-image-bundle.outputs.cache-hit != 'true'
        run: |
          mkdir -p "embedded-bins/staging/$TARGET_OS/bin"
          make --touch airgap-images.txt
          make "airgap-image-bundle-$TARGET_OS-$TARGET_ARCH.tar"

      - name: "Upload :: Airgap image bundle"
        uses: actions/upload-artifact@v4
        with:
          name: airgap-image-bundle-${{ inputs.target-os }}-${{ inputs.target-arch }}
          path: airgap-image-bundle-${{ inputs.target-os }}-${{ inputs.target-arch }}.tar
          compression-level: 0