alloy/.github/workflows/helm-test.yml at 70372a83622f3f6bc0d8f8c6916924a54da2fd64 · grafana/alloy · GitHub

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name: Test Helm chart
on: pull_request

permissions:
  contents: read

jobs:
  regenerate-docs:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          persist-credentials: false

      - name: Setup tools
        uses: jdx/mise-action@dba19683ed58901619b14f395a24841710cb4925 # v4.1.0
        with:
          install_args: helm-docs

      - name: Regenerate docs
        run: |
          make generate-helm-docs
          if ! git diff --exit-code; then
            echo "Helm chart documentation is not up to date. Please run 'make generate-helm-docs' and commit changes!" >&2
            exit 1
          fi

  regenerate-tests:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          persist-credentials: false

      - name: Install Helm
        uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5.0.0
        with:
          # renovate: datasource=github-releases packageName=helm/helm
          version: v3.21.1

      - name: Regenerate tests
        run: |
          make generate-helm-tests
          if [ ! -z "$(git status --porcelain)" ]; then
            echo "Helm chart tests are not up to date. Please run 'make generate-helm-tests' and commit changes!" >&2
            exit 1
          fi

  lint-test:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
        with:
          fetch-depth: 0
          persist-credentials: false

      - name: Install Helm
        uses: azure/setup-helm@dda3372f752e03dde6b3237bc9431cdc2f7a02a2 # v5.0.0
        with:
          # renovate: datasource=github-releases packageName=helm/helm
          version: v3.21.1

      - name: Install Python
        uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0
        with:
          python-version: '3.13.3'
          check-latest: true

      - name: Install chart-testing
        uses: helm/chart-testing-action@6ec842c01de15ebb84c8627d2744a0c2f2755c9f # v2.8.0

      - name: Determine changed charts
        id: list-changed
        run: |
          changed=$(ct list-changed --config ./operations/helm/ct.yaml)
          if [[ -n "$changed" ]]; then
            echo "changed=true" >> $GITHUB_OUTPUT
          fi

      - name: Lint charts
        run: ct lint --config ./operations/helm/ct.yaml

      - name: Create kind cluster
        uses: helm/kind-action@ef37e7f390d99f746eb8b610417061a60e82a6cc # v1.14.0
        if: steps.list-changed.outputs.changed == 'true'

      - name: Add dependency chart repos
        if: steps.list-changed.outputs.changed == 'true'
        run: |
          helm repo add prometheus-community https://prometheus-community.github.io/helm-charts

      - name: Install Prometheus Operator CRDs
        if: steps.list-changed.outputs.changed == 'true'
        run: |
          helm install my-prometheus-operator-crds prometheus-community/prometheus-operator-crds --version 6.0.0

      - name: Test charts
        run: ct install --config ./operations/helm/ct.yaml

      - name: Assert external HPA validation failure
        run: |
          set -e
          cd operations/helm/charts/alloy
          if helm template . --values ci/external-hpa-validation-failure.yaml > /dev/null 2>&1; then
            echo "ERROR: expected helm template to fail due to mutually-exclusive flags" >&2
            exit 1
          fi
          helm template . --values ci/external-hpa-validation-failure.yaml 2>&1 \
            | grep -q "mutually exclusive" \
            || { echo "ERROR: helm template failed but error message did not match expected text" >&2; exit 1; }
          echo "OK: external HPA validation fails with expected message"