ci.yml

name: CI

on:
  push:
    branches:
      - main
  pull_request: {}
  workflow_dispatch: {}

env:
  GO_VERSION: '1.21'
  GOLANGCILINT_VERSION: 'v1.55.2'
  DOCKER_BUILDX_VERSION: 'v0.12.0'

jobs:
  detect-noop:
    runs-on: ubuntu-22.04
    outputs:
      noop: ${{ steps.noop.outputs.should_skip }}
    steps:
      - name: Detect No-op Changes
        id: noop
        uses: fkirc/skip-duplicate-actions@v5.2.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          paths_ignore: '["**.md", "**.png", "**.jpg"]'
          do_not_skip: '["workflow_dispatch", "schedule", "push"]'

  lint:
    runs-on: ubuntu-22.04
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'

    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true

      - name: Setup Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Find the Go Build Cache
        id: go
        run: echo "::set-output name=cache::$(make go.cachedir)"

      - name: Cache the Go Build Cache
        uses: actions/cache@v2
        with:
          path: ${{ steps.go.outputs.cache }}
          key: ${{ runner.os }}-build-lint-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-build-lint-

      - name: Cache Go Dependencies
        uses: actions/cache@v2
        with:
          path: .work/pkg
          key: ${{ runner.os }}-pkg-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-pkg-

      - name: Vendor Dependencies
        run: make vendor vendor.check

      # We could run 'make lint' but we prefer this action because it leaves
      # 'annotations' (i.e. it comments on PRs to point out linter violations).
      - name: Lint
        uses: golangci/golangci-lint-action@v3
        with:
          version: ${{ env.GOLANGCILINT_VERSION }}

  check-diff:
    runs-on: ubuntu-22.04
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'

    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true

      - name: Setup Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Find the Go Build Cache
        id: go
        run: echo "::set-output name=cache::$(make go.cachedir)"

      - name: Cache the Go Build Cache
        uses: actions/cache@v2
        with:
          path: ${{ steps.go.outputs.cache }}
          key: ${{ runner.os }}-build-check-diff-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-build-check-diff-

      - name: Cache Go Dependencies
        uses: actions/cache@v2
        with:
          path: .work/pkg
          key: ${{ runner.os }}-pkg-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-pkg-

      - name: Vendor Dependencies
        run: make vendor vendor.check

      - name: Check Diff
        id: check-diff
        run: |
          mkdir _output
          make check-diff

      - name: Show diff
        if: failure() && steps.check-diff.outcome == 'failure'
        run: git diff

  unit-tests:
    runs-on: ubuntu-22.04
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'

    steps:
      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true

      - name: Fetch History
        run: git fetch --prune --unshallow

      - name: Setup Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Find the Go Build Cache
        id: go
        run: echo "::set-output name=cache::$(make go.cachedir)"

      - name: Cache the Go Build Cache
        uses: actions/cache@v2
        with:
          path: ${{ steps.go.outputs.cache }}
          key: ${{ runner.os }}-build-unit-tests-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-build-unit-tests-

      - name: Cache Go Dependencies
        uses: actions/cache@v2
        with:
          path: .work/pkg
          key: ${{ runner.os }}-pkg-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-pkg-

      - name: Vendor Dependencies
        run: make vendor vendor.check

      - name: Run Unit Tests
        run: make -j2 test

      - name: Publish Unit Test Coverage
        uses: codecov/codecov-action@v1
        with:
          flags: unittests
          file: _output/tests/linux_amd64/coverage.txt

  build-artifacts:
    runs-on: ubuntu-22.04
    needs: detect-noop
    if: needs.detect-noop.outputs.noop != 'true'

    steps:
      - name: Setup QEMU
        uses: docker/setup-qemu-action@v1
        with:
          platforms: all

      - name: Setup Docker Buildx
        uses: docker/setup-buildx-action@v1
        with:
          version: ${{ env.DOCKER_BUILDX_VERSION }}
          install: true

      - name: Checkout
        uses: actions/checkout@v2
        with:
          submodules: true

      - name: Fetch History
        run: git fetch --prune --unshallow

      - name: Setup Go
        uses: actions/setup-go@v2
        with:
          go-version: ${{ env.GO_VERSION }}

      - name: Find the Go Build Cache
        id: go
        run: echo "::set-output name=cache::$(make go.cachedir)"

      - name: Cache the Go Build Cache
        uses: actions/cache@v2
        with:
          path: ${{ steps.go.outputs.cache }}
          key: ${{ runner.os }}-build-publish-artifacts-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-build-publish-artifacts-

      - name: Cache Go Dependencies
        uses: actions/cache@v2
        with:
          path: .work/pkg
          key: ${{ runner.os }}-pkg-${{ hashFiles('**/go.sum') }}
          restore-keys: ${{ runner.os }}-pkg-

      - name: Vendor Dependencies
        run: make vendor vendor.check

      - name: Build Artifacts
        run: make -j2 build.all
        env:
          # We're using docker buildx, which doesn't actually load the images it
          # builds by default. Specifying --load does so.
          BUILD_ARGS: "--load"