Task2

.github/workflows/go.yml

@@ -0,0 +1,43 @@
+name: Go
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.19
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./...
+
+  linter:
+    strategy:
+      matrix:
+        go-version: [1.19.x]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Checkout code
+      uses: actions/checkout@v2
+    - name: Run linters
+      uses: golangci/golangci-lint-action@v2
+      with:
+        version: latest

.gitignore

@@ -19,3 +19,7 @@
 
 # Go workspace file
 go.work
+
+/bin
+/.idea
+.env

Makefile

@@ -0,0 +1,21 @@
+LOCAL_BIN:=$(CURDIR)/bin
+
+install-go-deps:
+	GOBIN=$(LOCAL_BIN) go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28.1
+	GOBIN=$(LOCAL_BIN) go install -mod=mod google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2
+
+
+.PHONY: lint
+lint:
+	golangci-lint run
+
+.PHONY: cover
+cover:
+	go test -short -count=1 -race -coverprofile=coverage.out ./...
+	go tool cover -html=coverage.out
+	rm coverage.out
+
+.PHONY: gen
+gen:
+	mockgen -source=internal/repository/chat_server/repository.go \
+	-destination=internal/repository/mocks/mock_repository.go

cmd/server/main.go

@@ -0,0 +1,25 @@
+package main
+
+import (
+	"context"
+
+	"github.com/satanaroom/auth/pkg/logger"
+	"github.com/satanaroom/chat_server/internal/app"
+)
+
+func main() {
+	ctx := context.Background()
+
+	chatApp, err := app.NewApp(ctx)
+	if err != nil {
+		logger.Fatalf("failed to initialize app: %s", err.Error())
+	}
+
+	logger.Info("service starting up")
+
+	if err = chatApp.Run(); err != nil {
+		logger.Fatalf("failed to run app: %s", err.Error())
+	}
+
+	logger.Info("service shutting down")
+}

go.mod

@@ -0,0 +1,31 @@
+module github.com/satanaroom/chat_server
+
+go 1.20
+
+require (
+	github.com/georgysavva/scany v1.2.1
+	github.com/jackc/pgconn v1.14.0
+	github.com/jackc/pgx/v4 v4.18.1
+	github.com/joho/godotenv v1.5.1
+	github.com/satanaroom/auth v0.0.0-20230504071525-1f1c0514db48
+)
+
+require (
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.3.2 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20221227161230-091c0ba34f0a // indirect
+	github.com/jackc/pgtype v1.14.0 // indirect
+	github.com/jackc/puddle v1.3.0 // indirect
+	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
+	github.com/sirupsen/logrus v1.4.2 // indirect
+	golang.org/x/crypto v0.8.0 // indirect
+	golang.org/x/net v0.9.0 // indirect
+	golang.org/x/sys v0.7.0 // indirect
+	golang.org/x/text v0.9.0 // indirect
+	google.golang.org/genproto v0.0.0-20230110181048-76db0878b65f // indirect
+	google.golang.org/grpc v1.54.0 // indirect
+	google.golang.org/protobuf v1.30.0 // indirect
+)

internal/app/app.go

@@ -0,0 +1,55 @@
+package app
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/satanaroom/chat_server/internal/closer"
+	"github.com/satanaroom/chat_server/internal/config"
+)
+
+type App struct {
+	serviceProvider *serviceProvider
+}
+
+func NewApp(ctx context.Context) (*App, error) {
+	a := &App{}
+
+	if err := a.initDeps(ctx); err != nil {
+		return nil, fmt.Errorf("init deps: %w", err)
+	}
+
+	return a, nil
+}
+
+func (a *App) Run() error {
+	defer func() {
+		closer.CloseAll()
+		closer.Wait()
+	}()
+
+	// TODO: run some server
+
+	return nil
+}
+
+func (a *App) initDeps(ctx context.Context) error {
+	inits := []func(context.Context) error{
+		config.Init,
+
+		a.initServiceProvider,
+	}
+
+	for _, f := range inits {
+		if err := f(ctx); err != nil {
+			return fmt.Errorf("init: %w", err)
+		}
+	}
+
+	return nil
+}
+
+func (a *App) initServiceProvider(_ context.Context) error {
+	a.serviceProvider = newServiceProvider()
+	return nil
+}

internal/app/service_provider.go

@@ -0,0 +1,48 @@
+package app
+
+import (
+	"context"
+
+	authV1 "github.com/satanaroom/auth/pkg/auth_v1"
+	"github.com/satanaroom/auth/pkg/logger"
+
+	authClient "github.com/satanaroom/chat_server/internal/clients/grpc/auth"
+	"github.com/satanaroom/chat_server/internal/closer"
+	"github.com/satanaroom/chat_server/internal/config"
+	chatService "github.com/satanaroom/chat_server/internal/service/chat"
+	"google.golang.org/grpc"
+)
+
+type serviceProvider struct {
+	authConfig config.AuthClientConfig
+
+	authClient  authClient.Client
+	chatService chatService.Service
+}
+
+func newServiceProvider() *serviceProvider {
+	return &serviceProvider{}
+}
+
+func (s *serviceProvider) ChatService(ctx context.Context) chatService.Service {
+	if s.chatService == nil {
+		s.chatService = chatService.NewService(s.AuthClient(ctx))
+	}
+
+	return s.chatService
+}
+
+func (s *serviceProvider) AuthClient(_ context.Context) authClient.Client {
+	if s.authClient == nil {
+		conn, err := grpc.Dial(s.authConfig.Port(), grpc.WithDefaultCallOptions())
+		if err != nil {
+			logger.Fatalf("failed to connect %s: %s", s.authConfig.Port(), err.Error())
+		}
+		closer.Add(conn.Close)
+
+		client := authV1.NewAuthV1Client(conn)
+		s.authClient = authClient.NewClient(client)
+	}
+
+	return s.authClient
+}

internal/clients/grpc/auth/client.go

@@ -0,0 +1,35 @@
+package auth
+
+import (
+	"context"
+	"fmt"
+
+	authV1 "github.com/satanaroom/auth/pkg/auth_v1"
+	"github.com/satanaroom/chat_server/internal/converter/client/auth"
+	"github.com/satanaroom/chat_server/internal/model"
+)
+
+var _ Client = (*client)(nil)
+
+type Client interface {
+	Create(ctx context.Context, info *model.UserInfo) (int64, error)
+}
+
+type client struct {
+	authClient authV1.AuthV1Client
+}
+
+func NewClient(cl authV1.AuthV1Client) *client {
+	return &client{
+		authClient: cl,
+	}
+}
+
+func (c *client) Create(ctx context.Context, info *model.UserInfo) (int64, error) {
+	resp, err := c.authClient.Create(ctx, auth.ToCreateRequest(info))
+	if err != nil {
+		return 0, fmt.Errorf("authClient.Create: %w", err)
+	}
+
+	return auth.FromCreateResponse(resp), nil
+}

internal/closer/closer.go

@@ -0,0 +1,87 @@
+package closer
+
+import (
+	"context"
+	"log"
+	"os"
+	"os/signal"
+	"sync"
+)
+
+var globalCloser = New()
+
+// Add adds `func() error` callback to the globalCloser
+func Add(f ...func() error) {
+	globalCloser.Add(f...)
+}
+
+// Wait ...
+func Wait() {
+	globalCloser.Wait()
+}
+
+// CloseAll ...
+func CloseAll() {
+	globalCloser.CloseAll()
+}
+
+// Closer ...
+type Closer struct {
+	mu    sync.Mutex
+	once  sync.Once
+	done  chan struct{}
+	funcs []func() error
+}
+
+// New returns new Closer, if []os.Signal is specified Closer will automatically call CloseAll when one of signals is received from OS
+func New(sig ...os.Signal) *Closer {
+	c := &Closer{done: make(chan struct{})}
+	if len(sig) > 0 {
+		go func() {
+			ch := make(chan os.Signal, 1)
+			signal.Notify(ch, sig...)
+			<-ch
+			signal.Stop(ch)
+			c.CloseAll()
+		}()
+	}
+	return c
+}
+
+// Add func to closer
+func (c *Closer) Add(f ...func() error) {
+	c.mu.Lock()
+	c.funcs = append(c.funcs, f...)
+	c.mu.Unlock()
+}
+
+// Wait blocks until all closer functions are done
+func (c *Closer) Wait() {
+	<-c.done
+}
+
+// CloseAll calls all closer functions
+func (c *Closer) CloseAll() {
+	c.once.Do(func() {
+		defer close(c.done)
+
+		c.mu.Lock()
+		funcs := c.funcs
+		c.funcs = nil
+		c.mu.Unlock()
+
+		// call all Closer funcs async
+		errs := make(chan error, len(funcs))
+		for _, f := range funcs {
+			go func(f func() error) {
+				errs <- f()
+			}(f)
+		}
+
+		for i := 0; i < cap(errs); i++ {
+			if err := <-errs; err != nil {
+				log.Println(context.Background(), "error returned from Closer: %v", err)
+			}
+		}
+	})
+}

internal/config/auth.go

@@ -0,0 +1,34 @@
+package config
+
+import (
+	"os"
+
+	"github.com/satanaroom/chat_server/internal/errs"
+)
+
+var _ AuthClientConfig = (*authClientConfig)(nil)
+
+const authPortEnvName = "AUTH_PORT"
+
+type AuthClientConfig interface {
+	Port() string
+}
+
+type authClientConfig struct {
+	port string
+}
+
+func NewAuthClientConfig() (*authClientConfig, error) {
+	port := os.Getenv(authPortEnvName)
+	if port == "" {
+		return nil, errs.ErrAuthClientPortNotFound
+	}
+
+	return &authClientConfig{
+		port: port,
+	}, nil
+}
+
+func (c *authClientConfig) Port() string {
+	return c.port
+}