build.yml

name: Build

on:
  push:
    branches: ["master"]
    tags: [v*]
  pull_request:
    types: [opened, synchronize]
  workflow_dispatch:

permissions:
  contents: read

# automatically cancel previous runs on the same PR
# https://stackoverflow.com/questions/66335225/how-to-cancel-previous-runs-in-the-pr-when-you-push-new-commitsupdate-the-curre/67939898#67939898
concurrency:
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
  cancel-in-progress: true

jobs:
  build:
    name: "Build"
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v3
        with:
          # https://github.com/actions/checkout/issues/626
          # This is correct, because we're using a merge queue (mergify) which only merges when built against the latest target branch.
          # https://docs.mergify.com/actions/queue/
          ref: ${{ github.event.pull_request.head.sha }}
      - uses: actions/setup-go@v3
        with:
          go-version-file: go.mod
          cache: true
      - run: go build *.go
      - name: Check if working directory is clean
        run: git diff --quiet --exit-code || (git status && false)

  lint:
    name: "Lint"
    runs-on: ubuntu-22.04
    steps:
      - uses: actions/checkout@v3
        with:
          # https://github.com/actions/checkout/issues/626
          # This is correct, because we're using a merge queue (mergify) which only merges when built against the latest target branch.
          # https://docs.mergify.com/actions/queue/
          ref: ${{ github.event.pull_request.head.sha }}
      - uses: actions/setup-go@v3
        with:
          go-version-file: go.mod
          cache: true
      - name: golangci-lint
        uses: golangci/golangci-lint-action@v3
        with:
          version: v1.50.1
      - name: Check if go code is formatted
        run: |
          UNFORMATTED_FILES=$(gofmt -l .)
          test -z $UNFORMATTED_FILES || (echo -e "Go code not formatted:\n$UNFORMATTED_FILES\n"; exit 1)