name: Mixin

on:
  pull_request:
    paths:
      - contrib/mixin/**
      - dashboard/windows-exporter-dashboard.json
      - .github/workflows/mixin.yml
  push:
    branches:
      - master
      - next
      - main
    paths:
      - contrib/mixin/**
      - dashboard/windows-exporter-dashboard.json
      - .github/workflows/mixin.yml
  workflow_dispatch:

permissions: {}

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

jobs:
  rules:
    name: Validate Prometheus rules
    runs-on: ubuntu-24.04
    timeout-minutes: 15
    permissions:
      contents: read
    defaults:
      run:
        working-directory: contrib/mixin
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: 'false'

      - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7.0.0
        with:
          go-version-file: go.mod

      - name: Cache mixin tools
        id: tools-cache
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/go/bin
          key: ${{ runner.os }}-${{ runner.arch }}-mixin-tools-${{ hashFiles('contrib/mixin/Makefile', 'go.mod') }}

      - name: Install pinned tools
        if: steps.tools-cache.outputs.cache-hit != 'true'
        run: make tools

      - name: Lint and test rules
        run: |
          make test PROMTOOL="docker run --rm --entrypoint promtool -v \"$PWD:/mixin:ro\" -w /mixin prom/prometheus:v3.15.0"