ci.yaml

name: Lint and Test Charts

# This file shamelessly ripped from datadog's helm chart setup
# https://github.com/DataDog/helm-charts/blob/main/.github/workflows/ci.yaml

on:
  pull_request:
    paths:
      - "charts/**"

jobs:
  changed:
    runs-on: ubuntu-latest
    outputs:
      charts: ${{ steps.list-changed.outputs.changed }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Set up Helm
        uses: azure/setup-helm@v3.5
        with:
          version: v3.6.3
      - uses: actions/setup-python@v4
        with:
          python-version: 3.7
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.3.1
      - name: Run chart-testing (list-changed)
        id: list-changed
        env:
          CT_DEBUG: "false"
        run: |
          changed=$(ct list-changed --config .github/ct.yaml)
          if [[ -n "$changed" ]]; then
            echo -n "Charts changed:"
            echo "$changed"
            echo "::set-output name=changed::$changed"
          else
            echo "PR without any chart changes - failing"
            exit 1
          fi

  lint-chart:
    runs-on: ubuntu-latest
    needs:
      - changed
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - uses: actions/setup-python@v4
        with:
          python-version: 3.7
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.3.1
      - name: Run chart-testing (lint)
        run: ct lint --config .github/ct.yaml

  # We don't use helm-docs yet, can set this up later
  #
  # lint-docs:
  #   runs-on: ubuntu-latest
  #   needs:
  #     - changed
  #   steps:
  #     - name: Checkout
  #       uses: actions/checkout@v3
  #       with:
  #         fetch-depth: 0
  #     - name: Run helm-docs
  #       run: .github/helm-docs.sh

  kubeconform-chart:
    runs-on: ubuntu-latest
    needs:
      - changed
    strategy:
      matrix:
        # When changing versions here, check that the version exists at:
        # https://github.com/yannh/kubernetes-json-schema
        k8s:
          - v1.28.2
          - v1.27.6
          - v1.26.5
          - v1.25.2
          - v1.24.2
          - v1.22.9
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Run kubeconform
        env:
          KUBERNETES_VERSION: ${{ matrix.k8s }}
          CHANGED_CHARTS: ${{needs.changed.outputs.charts}}
        run: .github/kubeconform.sh

  install-chart:
    name: install-chart
    runs-on:
      group: retool-helm-kind-runners
    needs:
      - lint-chart
      - kubeconform-chart
    strategy:
      max-parallel: 1
      matrix:
        # Only keep a couple because they take ~5 min each to run :(
        k8s:
          - v1.26.4
          # - v1.25.2
          # - v1.24.2
          - v1.22.9
          # - v1.18.20
          # - v1.16.15
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Create kind ${{ matrix.k8s }} cluster
        uses: helm/kind-action@v1.5.0
        with:
          node_image: kindest/node:${{ matrix.k8s }}
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.3.1
      - name: Run chart-testing (install)
        run: ct install --config .github/ct.yaml

  pr-validated:
    name: pr-validated
    runs-on: ubuntu-latest
    needs:
      - install-chart
    steps:
      - name: validate
        run: echo "PR OK"