Build workflow, version package

.github/CODEOWNERS

@@ -0,0 +1 @@
+* @zikaeroh

.github/workflows/ci.yml

@@ -0,0 +1,154 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+env:
+  GO_DEV_VERSION: "1.14" # Recommended Go version for development.
+  GOLANGCI_LINT_VERSION: "v1.26.0"
+  NODE_VERSION: "14"
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        go: ["1.14"]
+    name: Go ${{ matrix.go }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('**/go.sum') }}
+
+      - name: Install Go
+        uses: actions/setup-go@v2-beta
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Download Go modules
+        run: go mod download
+
+      - name: Run tests
+        run: go test -race -covermode=atomic -coverprofile=coverage.txt ./...
+
+      - name: Run 1x benchmarks
+        run: go test -run=- -bench . -benchtime=1x ./...
+
+  style:
+    name: Style
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ env.GO_DEV_VERSION }}-${{ hashFiles('**/go.sum') }}
+
+      - name: Install Go
+        uses: actions/setup-go@v2-beta
+        with:
+          go-version: ${{ env.GO_DEV_VERSION }}
+
+      - name: Check go.mod tidyness
+        run: |
+          go mod tidy
+          git diff --exit-code go.mod go.sum
+
+      - name: golangci-lint
+        run: |
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin $GOLANGCI_LINT_VERSION
+          $(go env GOPATH)/bin/golangci-lint run --timeout 10m
+
+  generate:
+    name: go generate
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Cache Go modules
+        uses: actions/cache@v1
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ env.GO_DEV_VERSION }}-${{ hashFiles('**/go.sum') }}
+
+      - name: Install Go
+        uses: actions/setup-go@v2-beta
+        with:
+          go-version: ${{ env.GO_DEV_VERSION }}
+
+      - name: go generate
+        run: |
+          go generate ./...
+          git diff --exit-code
+
+  build_frontend:
+    name: Build frontend
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: frontend
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2-beta
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - name: Get yarn cache directory path
+        id: yarn-cache-dir-path
+        run: echo "::set-output name=dir::$(yarn cache dir)"
+
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.yarn-cache-dir-path.outputs.dir }}
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+
+      - name: yarn install
+        run: yarn install --frozen-lockfile
+
+      - name: yarn build
+        run: yarn build
+
+  docker:
+    name: Docker
+    runs-on: ubuntu-latest
+    needs: [test, style, generate, build_frontend]
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Get version
+        run: |
+          export CODIES_VERSION="r$(git rev-list --count HEAD).$(git rev-parse --short HEAD)"
+          echo Version $CODIES_VERSION
+          echo "::set-env name=CODIES_VERSION::$CODIES_VERSION"
+
+      - name: Build / push image
+        uses: whoan/docker-build-with-cache-action@v4
+        with:
+          username: "${{ secrets.DOCKER_USERNAME }}"
+          password: "${{ secrets.DOCKER_PASSWORD }}"
+          image_name: zikaeroh/codies
+          image_tag: "latest,${{ env.CODIES_VERSION }}"
+          build_extra_args: "--build-arg=version=${{ env.CODIES_VERSION }}"
+          push_image_and_stages: ${{ github.repository == 'zikaeroh/codies' && github.event_name == 'push' && github.ref == 'refs/heads/master' }}

Dockerfile

@@ -12,7 +12,9 @@ RUN go mod download
 # Manually copying the required files to make this image's cache only include Go code.
 COPY ./main.go ./main.go
 COPY ./internal ./internal
-RUN go build .
+
+ARG version
+RUN go build  -ldflags="-X github.com/zikaeroh/codies/internal/version.version=${version}" .
 
 # TODO: Use distroless/static and statically compile above. (https://golang.org/issue/26492)
 FROM gcr.io/distroless/base:nonroot

internal/version/version.go

@@ -0,0 +1,12 @@
+// Package version provides a global version string.
+package version
+
+var version string
+
+// Version returns a compile time version string, or "(devel)" if unset.
+func Version() string {
+	if version == "" {
+		return "(devel)"
+	}
+	return version
+}

main.go

@@ -18,6 +18,7 @@ import (
 	"github.com/tomwright/queryparam/v4"
 	"github.com/zikaeroh/codies/internal/protocol"
 	"github.com/zikaeroh/codies/internal/server"
+	"github.com/zikaeroh/codies/internal/version"
 	"golang.org/x/sync/errgroup"
 	"nhooyr.io/websocket"
 )
@@ -31,11 +32,16 @@ var args = struct {
 }
 
 func main() {
+	rand.Seed(time.Now().Unix())
+	log.SetFlags(log.LstdFlags | log.Lshortfile)
+
 	if _, err := flags.Parse(&args); err != nil {
 		// Default flag parser prints messages, so just exit.
 		os.Exit(1)
 	}
 
+	log.Printf("starting codies server, version %s", version.Version())
+
 	wsOpts := &websocket.AcceptOptions{
 		OriginPatterns: args.Origins,
 	}
@@ -45,10 +51,6 @@ func main() {
 		wsOpts.OriginPatterns = []string{"*"}
 	}
 
-	rand.Seed(time.Now().Unix())
-
-	log.SetFlags(log.LstdFlags | log.Lshortfile)
-
 	g, ctx := errgroup.WithContext(ctxutil.Interrupt())
 
 	srv := server.NewServer()