helm-builder.yaml

# Pull the GitHub Runner Scale Set Controller OCI Artifact
# and convert it to a standard Helm tar.gz file and push it
# to this repository for use with tools like Kustomize.

name: GitHub Runner Scale Set Controller Helm Builder
run-name: ${{github.actor}} - GitHub Runner Scale Set Controller Helm Builder

on:
  pull_request:
    types:
      - closed
    branches:
      - main

env:
  # renovate: datasource=docker
  GHRSS_VERSION: "ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set:0.9.0"
  # renovate: datasource=docker
  GHRSSC_VERSION: "ghcr.io/actions/actions-runner-controller-charts/gha-runner-scale-set-controller:0.8.3"
  # renovate: datasource=github-releases depName=helm/chart-releaser
  CR_VERSION: "v1.6.1"
  # Branch name where GitHub Pages are published
  # https://docs.github.com/en/pages/getting-started-with-github-pages/configuring-a-publishing-source-for-your-github-pages-site
  PAGES_BRANCH: "gh-pages"

jobs:
  helm:
    runs-on: ubuntu-latest
    if: github.event.pull_request.merged == true

    permissions:
      contents: write
      packages: write

    strategy:
      max-parallel: 1
      matrix:
        chartName: [GHRSSC_VERSION, GHRSS_VERSION]

    steps:
      - name: Clone Repository
        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
        with:
          fetch-depth: 0

      - name: Install required tools
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            skopeo wget file git

      - name: install chart-releaser
        run: |
          if [ ! -f ./cr ]; then
            version="${{env.CR_VERSION}}"
            wget -qO- \
            https://github.com/helm/chart-releaser/releases/download/${version}/chart-releaser_${version#v}_linux_amd64.tar.gz | \
            tar -xvz -C ./
          fi

      - name: Copy and Download the OCI Artifact
        id: copy
        run: |
          mkdir -p arc
          # Check for the matrix, set the chart URL and clone it
          if [[ "${{ matrix.chartName }}" == "GHRSSC_VERSION" ]]; then
            chart="${{ env.GHRSSC_VERSION }}"
          elif [[ "${{ matrix.chartName }}" == "GHRSS_VERSION" ]]; then
            chart="${{ env.GHRSS_VERSION }}"
          fi
          skopeo copy docker://${chart} dir:./arc
          # Output
          echo "chart=${chart}" >> "$GITHUB_OUTPUT"

      - name: Find and extract the Helm Chart
        id: extract
        run: |
          for file in $(find arc -type f); do
            if [[ $(file $file --mime-type | awk '{print $2}') == "application/gzip" ]]; then
              tar -zxvf $file
              break
            fi
          done
          # Output
          echo "directory=$(ls | grep gha)" >> "$GITHUB_OUTPUT"

      - name: Package the GitHub Action Runner Scale Set Helm Chart
        run: |
          package="$(echo "${{ steps.copy.outputs.chart }}" | awk -F\/ '{print $4}' | cut -d: -f1)"
          ./cr package ${package}/

      - name: Upload Helm Chart to GitHub
        run: |
          ./cr upload \
            --owner ${{github.event.repository.owner.login}} \
            --git-repo ${{github.event.repository.name}} \
            --token ${{secrets.GITHUB_TOKEN}} \
            --skip-existing \
            --push

      - name: Set Git User values
        run: |
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          git config --global user.name "github-actions[bot]"

        # https://github.com/helm/chart-releaser/issues/187
      - name: Create and push the Helm Index to GitHub
        run: |
          # Verify that the PAGES_BRANCH exists on origin
          git show-ref origin ${{env.PAGES_BRANCH}} || ( echo "Branch ${{env.PAGES_BRANCH}} does not exist on origin" && exit 1 )
          mkdir -p .cr-index
          git fetch --all
          ./cr index \
          --owner ${{github.event.repository.owner.login}} \
          --git-repo ${{github.event.repository.name}} \
          --token ${{secrets.GITHUB_TOKEN}} \
          --index-path . \
          --pages-branch ${{env.PAGES_BRANCH}} \
          --push