helm-chart.yml

# Copyright (c) 2023 Contributors to the Eclipse Foundation
#
# See the NOTICE file(s) distributed with this work for additional
# information regarding copyright ownership.
#
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License 2.0 which is available at
# http://www.eclipse.org/legal/epl-2.0
#
# SPDX-License-Identifier: EPL-2.0
name: Lint and test Helm chart

env:
  CONFIG_OPTION_CHART_TESTING: "--config .github/ct.yml"
  VERSION_CHART_TESTING: "v3.8.0" # 3.9.0 has an issue with comparing against "master" branch
  VERSION_HELM: "v3.12.1"
  VERSION_PYTHON: "3.9"
on:
  pull_request:
    paths:
      - 'deployment/helm/**'
      - '.github/workflows/helm-chart.yml'
      - '.github/ct.yml'
      - '.github/kubeval.sh'

jobs:
  lint-chart:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set up Helm
        uses: azure/setup-helm@v3.5
        with:
          version: ${{ env.VERSION_HELM }}
      - uses: actions/setup-python@v4
        with:
          python-version: ${{ env.VERSION_PYTHON }}
          check-latest: true
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.6.1
        with:
          version: ${{ env.VERSION_CHART_TESTING }}
      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed ${{ env.CONFIG_OPTION_CHART_TESTING }} --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi
      - name: Run chart-testing (lint)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct lint ${{ env.CONFIG_OPTION_CHART_TESTING }} --target-branch ${{ github.event.repository.default_branch }}

  kubeval-chart:
    runs-on: ubuntu-latest
    needs: lint-chart
    strategy:
      matrix:
        # the versions supported by kubeval are the ones for
        # which a folder exists at
        # https://github.com/yannh/kubernetes-json-schema/
        k8s:
          - v1.26.6
          - v1.27.3
          - v1.28.3
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Fetch history for chart testing
        run: git fetch --prune --unshallow
      - name: Set up Helm
        uses: azure/setup-helm@v3.5
        with:
          version: ${{ env.VERSION_HELM }}
      - name: Run kubeval
        env:
          KUBERNETES_VERSION: ${{ matrix.k8s }}
        run: .github/kubeval.sh

  install-chart:
    name: install-chart
    runs-on: ubuntu-latest
    needs:
      - lint-chart
      - kubeval-chart
    strategy:
      matrix:
        # the versions supported by chart-testing are the tags
        # available for the docker.io/kindest/node image
        # https://hub.docker.com/r/kindest/node/tags
        k8s:
          - v1.26.6
          - v1.27.3
          - v1.28.0
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Fetch history for chart testing
        run: git fetch --prune --unshallow
      - name: Set up Helm
        uses: azure/setup-helm@v3.5
        with:
          version: ${{ env.VERSION_HELM }}
      - uses: actions/setup-python@v4
        with:
          python-version: ${{ env.VERSION_PYTHON }}
          check-latest: true
      - name: Set up chart-testing
        uses: helm/chart-testing-action@v2.6.1
        with:
          version: ${{ env.VERSION_CHART_TESTING }}
      - name: Run chart-testing (list-changed)
        id: list-changed
        run: |
          changed=$(ct list-changed ${{ env.CONFIG_OPTION_CHART_TESTING }} --target-branch ${{ github.event.repository.default_branch }})
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi
      - name: Create kind ${{ matrix.k8s }} cluster
        if: steps.list-changed.outputs.changed == 'true'
        uses: helm/kind-action@v1.4.0
        with:
          node_image: kindest/node:${{ matrix.k8s }}
      - name: Run chart-testing (install)
        if: steps.list-changed.outputs.changed == 'true'
        run: ct install ${{ env.CONFIG_OPTION_CHART_TESTING }} --target-branch ${{ github.event.repository.default_branch }}