ci.yml

name: continuous-integration

on:
  push:
    branches:
    - main
    - release*
    tags:
    - v1.*
    - v2.*
  pull_request:
    branches:
    - main
    - release*

permissions:
  contents: read

env:
  E2E_SETUP_KIND: yes
  E2E_SETUP_KUBECTL: yes
  SUDO: sudo
  GO_VERSION: "^1.23"
  GOLANGCI_LINT_VERSION: "v1.61.0"

jobs:
  ci-go-lint:
    name: ci-go-lint
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Lint
      run: |
        curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin ${{ env.GOLANGCI_LINT_VERSION }}
        make lint

  ci-validate-manifests:
    name: ci-validate-manifests
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Validate generated manifests
      run: |
        make validate-manifests

  ci-validate-go-modules:
    name: ci-validate-go-modules
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Validate go modules
      run: |
        make validate-modules

  ci-validate-docs:
    name: ci-validate-docs
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Check that all metrics are documented and templates have no delta
      run: |
        make doccheck

  ci-unit-tests:
    name: ci-unit-tests
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Unit tests
      run: |
        make test-unit

  ci-rule-tests:
    name: ci-rule-tests
    runs-on: ubuntu-latest
    steps:
      - name: Check out code into the Go module directory
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

      - name: Setup promtool
        run: |
          make install-promtool

      - name: Rule tests
        run: |
          PROMTOOL_CLI=./promtool make test-rules

  ci-benchmark-tests:
    name: ci-benchmark-tests
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Benchmark tests
      run: |
        BENCHSTAT_OUTPUT_FILE=result.txt make test-benchmark-compare
    - run: |
        echo "\`\`\`" >> "$GITHUB_STEP_SUMMARY"
        cat result.txt >> "$GITHUB_STEP_SUMMARY"
        echo "\`\`\`" >> "$GITHUB_STEP_SUMMARY"
        cat <<EOL >> "$GITHUB_STEP_SUMMARY"
        <hr />
        The table shows the median and 95% confidence interval (CI) summaries for each benchmark comparing the HEAD and the BASE, and an A/B comparison under "vs base". The last column shows the statistical p-value with ten runs (n=10).
        The last row has the Geometric Mean (geomean) for the given rows in the table.
        Refer to [benchstat's documentation](https://pkg.go.dev/golang.org/x/perf/cmd/benchstat) for more help.
        EOL

  ci-build-kube-state-metrics:
    name: ci-build-kube-state-metrics
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: Build
      run: |
        make build

  ci-e2e-tests:
    name: ci-e2e-tests
    runs-on: ubuntu-latest
    steps:
    - name: Check out code into the Go module directory
      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2

    - name: Set up Go 1.x
      uses: actions/setup-go@41dfa10bad2bb2ae585af6ee5bb4d7d973ad74ed # v5.1.0
      with:
        go-version: ${{ env.GO_VERSION }}
      id: go

    - name: Setup environment
      run: |
        make install-tools

    - name: End-to-end tests
      run: |
        make e2e