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name: Pulsar Helm Chart CI
on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master
  workflow_dispatch:

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  preconditions:
    name: Preconditions
    runs-on: ubuntu-22.04
    if: (github.event_name != 'schedule') || (github.repository == 'apache/pulsar-helm-chart')
    outputs:
      docs_only: ${{ steps.check_changes.outputs.docs_only }}

    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: Detect changed files
        id:   changes
        uses: apache/pulsar-test-infra/paths-filter@master
        with:
          filters: .github/changes-filter.yaml
          list-files: csv

      - name: Check changed files
        id: check_changes
        run: |
          if [[ "${GITHUB_EVENT_NAME}" != "schedule" && "${GITHUB_EVENT_NAME}" != "workflow_dispatch" ]]; then
            echo "docs_only=${{ fromJSON(steps.changes.outputs.all_count) == fromJSON(steps.changes.outputs.docs_count) && fromJSON(steps.changes.outputs.docs_count) > 0 }}" >> $GITHUB_OUTPUT
          else
            echo docs_only=false >> $GITHUB_OUTPUT
          fi

  license-check:
    needs: preconditions
    name: License Check
    runs-on: ubuntu-22.04
    timeout-minutes: 10
    if: ${{ needs.preconditions.outputs.docs_only != 'true' }}
    steps:
      - name: Set up Go 1.12
        uses: actions/setup-go@v4
        with:
          go-version: 1.12
        id: go

      - name: Check out code into the Go module directory
        uses: actions/checkout@v4

      - name: Check license
        run: |
          go test license_test.go

  # run "ct lint" https://github.com/helm/chart-testing/blob/main/doc/ct_lint.md
  ct-lint:
    needs: ['preconditions', 'license-check']
    name: chart-testing lint
    runs-on: ubuntu-22.04
    timeout-minutes: 45
    if: ${{ needs.preconditions.outputs.docs_only != 'true' }}
    steps:
      - name: checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Tune Runner VM
        uses: ./.github/actions/tune-runner-vm

      - name: Setup ssh access to build runner VM
        # ssh access is enabled for builds in own forks
        if: ${{ github.repository != 'apache/pulsar-helm-chart' && github.event_name == 'pull_request' }}
        uses: ./.github/actions/ssh-access
        continue-on-error: true
        with:
          limit-access-to-actor: true

      - name: Set up Helm
        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
        uses: azure/setup-helm@v3
        with:
          version: v3.12.3

      - name: Set up Python
        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
        uses: actions/setup-python@v4
        with:
          python-version: '3.9'

      - name: Set up chart-testing
        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
        uses: ./.github/actions/chart-testing-action

      - name: Run chart-testing (lint)
        id: ct-lint
        if: ${{ steps.check_changes.outputs.docs_only != 'true' }}
        run: |
          ct lint --check-version-increment=false \
            --validate-maintainers=false \
            --target-branch ${{ github.event.repository.default_branch }}

      - name: Wait for ssh connection when build fails
        # ssh access is enabled for builds in own forks
        uses: ./.github/actions/ssh-access
        if: ${{ failure() && github.repository != 'apache/pulsar-helm-chart' && github.event_name == 'pull_request' }}
        continue-on-error: true
        with:
          action: wait

  install-chart-tests:
    name: ${{ matrix.testScenario.name }} - k8s ${{ matrix.k8sVersion.version }} - ${{ matrix.testScenario.type || 'install' }}
    runs-on: ubuntu-22.04
    timeout-minutes: ${{ matrix.testScenario.timeout || 45 }}
    needs: ['preconditions', 'ct-lint']
    if: ${{ needs.preconditions.outputs.docs_only != 'true' }}
    strategy:
      fail-fast: false
      matrix:
        # see https://github.com/kubernetes-sigs/kind/releases/tag/v0.20.0 for the list of supported k8s versions for kind 0.20.0
        k8sVersion:
          - version: "1.21.14"
            kind_image_tag: v1.21.14@sha256:8a4e9bb3f415d2bb81629ce33ef9c76ba514c14d707f9797a01e3216376ba093
          - version: "1.27.3"
            kind_image_tag: v1.27.3@sha256:3966ac761ae0136263ffdb6cfd4db23ef8a83cba8a463690e98317add2c9ba72
        testScenario:
          - name: Upgrade latest released version
            values_file: .ci/clusters/values-upgrade.yaml
            shortname: upgrade
            type: upgrade
          - name: Use Pulsar Image
            values_file: .ci/clusters/values-pulsar-image.yaml
            shortname: pulsar-image
          - name: JWT Asymmetric Keys
            values_file: .ci/clusters/values-jwt-asymmetric.yaml
            shortname: jwt-asymmetric
          - name: JWT Symmetric Key
            values_file: .ci/clusters/values-jwt-symmetric.yaml
            shortname: jwt-symmetric
          - name: TLS
            values_file: .ci/clusters/values-tls.yaml
            shortname: tls
          - name: Broker & Proxy TLS
            values_file: .ci/clusters/values-broker-tls.yaml
            shortname: broker-tls
          - name: BK TLS Only
            values_file: .ci/clusters/values-bk-tls.yaml
            shortname: bk-tls
          - name: ZK TLS Only
            values_file: .ci/clusters/values-zk-tls.yaml
            shortname: zk-tls
          - name: ZK & BK TLS Only
            values_file: .ci/clusters/values-zkbk-tls.yaml
            shortname: zkbk-tls
          - name: PSP
            values_file: .ci/clusters/values-psp.yaml
            shortname: psp
        include:
          - k8sVersion:
              version: "1.21.14"
              kind_image_tag: v1.21.14@sha256:8a4e9bb3f415d2bb81629ce33ef9c76ba514c14d707f9797a01e3216376ba093
            testScenario:
              name: "Upgrade TLS"
              values_file: .ci/clusters/values-tls.yaml
              shortname: tls
              type: upgrade
          - k8sVersion:
              version: "1.21.14"
              kind_image_tag: v1.21.14@sha256:8a4e9bb3f415d2bb81629ce33ef9c76ba514c14d707f9797a01e3216376ba093
            testScenario:
              name: "Upgrade PSP"
              values_file: .ci/clusters/values-psp.yaml
              shortname: psp
              type: upgrade
    env:
      k8sVersion: ${{ matrix.k8sVersion.kind_image_tag }}
      KUBECTL_VERSION: ${{ matrix.k8sVersion.version }}
    steps:
      - name: checkout
        uses: actions/checkout@v4

      - name: Tune Runner VM
        uses: ./.github/actions/tune-runner-vm

      - name: Setup debugging tools for ssh access
        if: ${{ github.repository != 'apache/pulsar-helm-chart' && github.event_name == 'pull_request' }}
        run: |
          cat >> $HOME/.bashrc <<'EOF'
          function use_kind_kubeconfig() {
            export KUBECONFIG=$(ls $HOME/kind/pulsar-ci-*/kubeconfig.yaml)
          }

          function kubectl() {
            # use kind environment's kubeconfig
            if [ -z "$KUBECONFIG" ]; then
              use_kind_kubeconfig
            fi
            command kubectl "$@"
          }

          function k9s() {
            # use kind environment's kubeconfig
            if [ -z "$KUBECONFIG" ]; then
              use_kind_kubeconfig
            fi
            # install k9s on the fly
            if [ ! -x /usr/local/bin/k9s ]; then
              echo "Installing k9s..."
              curl -L -s https://github.com/derailed/k9s/releases/download/v0.29.1/k9s_Linux_amd64.tar.gz | sudo tar xz -C /usr/local/bin k9s
            fi
            command k9s "$@"
          }
          EOF
          cat >> $HOME/.bash_profile <<'EOF'
          if [ -f ~/.bashrc ]; then
            source ~/.bashrc
          fi
          EOF

      - name: Setup ssh access to build runner VM
        # ssh access is enabled for builds in own forks
        if: ${{ github.repository != 'apache/pulsar-helm-chart' && github.event_name == 'pull_request' }}
        uses: ./.github/actions/ssh-access
        continue-on-error: true
        with:
          limit-access-to-actor: true

      - name: Run chart-testing (${{ matrix.testScenario.type || 'install' }})
        run: |
          case "${{ matrix.testScenario.shortname }}" in
            "jwt-symmetric")
              export SYMMETRIC=true
              ;;
          esac
          if [[ "${{ matrix.testScenario.type || 'install' }}" == "upgrade" ]]; then
            export UPGRADE_FROM_VERSION=latest
          fi
          .ci/chart_test.sh ${{ matrix.testScenario.values_file }}

      - name: Collect k8s logs on failure
        if: ${{ cancelled() || failure() }}
        continue-on-error: true
        shell: bash
        run: |
          source .ci/helm.sh
          set +e
          ci::collect_k8s_logs

      - name: Upload k8s logs on failure
        uses: actions/upload-artifact@v2
        if: ${{ cancelled() || failure() }}
        continue-on-error: true
        with:
          name: k8s-logs-${{ matrix.testScenario.shortname }}
          path: /tmp/k8s-logs
          retention-days: 7
          if-no-files-found: ignore          

      - name: Wait for ssh connection when build fails
        # ssh access is enabled for builds in own forks
        uses: ./.github/actions/ssh-access
        if: ${{ failure() && github.repository != 'apache/pulsar-helm-chart' && github.event_name == 'pull_request' }}
        continue-on-error: true
        with:
          action: wait

  # This job is required for pulls to be merged.
  # It depends on all other jobs in this workflow.
  pulsar-helm-chart-ci-checks-completed:
    name: "CI checks completed"
    if: ${{ always() && ((github.event_name != 'schedule') || (github.repository == 'apache/pulsar-helm-chart')) }}
    runs-on: ubuntu-22.04
    timeout-minutes: 10
    needs: [
      'preconditions',
      'license-check',
      'install-chart-tests'
    ]
    steps:
      - name: Check that all required jobs were completed successfully
        if: ${{ needs.preconditions.outputs.docs_only != 'true' }}
        run: |
          if [[ ! ( \
                   "${{ needs.license-check.result }}" == "success" \
                && "${{ needs.install-chart-tests.result }}" == "success" \
               ) ]]; then
            echo "Required jobs haven't been completed successfully."
            exit 1
          fi