PR-build.yml

# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT

name: PR Build
on:
  workflow_dispatch:
  pull_request:
    branches: 
      - main*
      - feature*
    types: 
      - opened
      - synchronize
      - reopened
      - ready_for_review

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

jobs:
  changes:
    name: Check changes
    runs-on: ubuntu-latest
    outputs:
      build: ${{ steps.filter.outputs.build }}
      lint: ${{ steps.filter.outputs.lint }}
    steps:
      - uses: actions/checkout@v3
      - uses: dorny/paths-filter@v2
        id: filter
        with:
          list-files: shell
          filters: .github/config/file-filters.yml

      - name: List all updated files
        run: |
          for file in ${{ steps.filter.outputs.build_files }}; do
            echo "$file"
          done

  lint:
    needs: [changes]
    name: Check lint
    runs-on: ubuntu-latest
    steps:
      - name: Set up Go 1.x
        if: needs.changes.outputs.lint == 'true'
        uses: actions/setup-go@v4
        with:
          go-version: ~1.22.2
          cache: false

      - name: Check out code
        if: needs.changes.outputs.lint == 'true'
        uses: actions/checkout@v3

      - name: Check format
        if: needs.changes.outputs.lint == 'true'
        run: |
          make fmt fmt-sh
          if [ ! -z "`git status --porcelain`" ]; then
            echo "make fmt changed files"
            git status
            exit 1
          fi

      - name: Check license and imports
        if: needs.changes.outputs.lint == 'true'
        run: make simple-lint

  build:
    needs: [lint, changes]
    name: Build ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest, windows-2019, windows-latest, macos-12]
        include:
          - os: ubuntu-latest
            family: linux
            cache-path: |
              ~/.cache/go-build
              ~/go/pkg/mod
          - os: macos-12
            family: darwin
            cache-path: |
              ~/Library/Caches/go-build
              ~/go/pkg/mod
          - os: windows-2019
            family: windows
            cache-path: |
              ~\AppData\Local\go-build
              ~\go\pkg\mod
          - os: windows-latest
            family: windows
            cache-path: |
              ~\AppData\Local\go-build
              ~\go\pkg\mod
    steps:
      - name: Set up Go 1.x
        if: needs.changes.outputs.build == 'true'
        uses: actions/setup-go@v4
        with:
          go-version: ~1.22.2
          cache: false

      - name: Check out code
        if: needs.changes.outputs.build == 'true'
        uses: actions/checkout@v3

      - name: Cache binaries
        id: cached_binaries
        if: needs.changes.outputs.build == 'true'
        uses: actions/cache@v3
        with:
          key: "cached-binaries-${{ matrix.os }}-${{ github.sha }}"
          path: go.mod

      - name: Cache build output
        if: steps.cached_binaries.outputs.cache-hit != 'true' && needs.changes.outputs.build == 'true'
        uses: actions/cache@v3
        with:
          path: ${{ matrix.cache-path }}
          key: v1-go-pkg-mod-${{ matrix.os }}-${{ hashFiles('**/go.sum') }}

      - name: Install make
        if: matrix.family == 'windows' && steps.cached_binaries.outputs.cache-hit != 'true' && needs.changes.outputs.build == 'true'
        run: choco install make

      - name: Unit Test
        if:  steps.cached_binaries.outputs.cache-hit != 'true' && needs.changes.outputs.build == 'true'
        run: make test

      - name: Build
        if: steps.cached_binaries.outputs.cache-hit != 'true' && needs.changes.outputs.build == 'true'
        run: make amazon-cloudwatch-agent-${{ matrix.family }}