add task service

internal/task/server/server.go

@@ -0,0 +1,96 @@
+package server
+
+import (
+	"fmt"
+	"log"
+	"net"
+	"time"
+
+	"datarush/internal/task/config"
+	grpcHandlers "datarush/internal/task/handler/grpc"
+	taskPostgresRepo "datarush/internal/task/repository/postgres"
+	"datarush/internal/task/service"
+	pb "datarush/pkg/api/task"
+
+	"github.com/jmoiron/sqlx"
+	_ "github.com/lib/pq"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
+)
+
+const (
+	httpReadTimeout  = 10 * time.Second
+	httpWriteTimeout = 10 * time.Second
+	httpIdleTimeout  = 60 * time.Second
+)
+
+type Server struct {
+	grpcServer *grpc.Server
+	config     *config.Config
+	db         *sqlx.DB
+}
+
+func New(cfg *config.Config) *Server {
+	return &Server{
+		config: cfg,
+	}
+}
+
+func (s *Server) Start() error {
+	db, err := sqlx.Connect("postgres", s.config.BuildPostgresConnStr())
+	if err != nil {
+		return fmt.Errorf("failed to connect to postgres: %w", err)
+	}
+	s.db = db
+
+	if err := s.registerGRPCServices(); err != nil {
+		return fmt.Errorf("failed to register gRPC services: %w", err)
+	}
+
+	go func() {
+		lis, err := net.Listen("tcp", fmt.Sprintf(":%d", s.config.GRPCPort))
+		if err != nil {
+			log.Fatalf("failed to listen on grpc port: %v", err)
+		}
+
+		log.Printf("starting gRPC server on port %d", s.config.GRPCPort)
+		if err := s.grpcServer.Serve(lis); err != nil {
+			log.Fatalf("failed to serve gRPC: %v", err)
+		}
+	}()
+
+	return nil
+}
+
+func (s *Server) registerGRPCServices() error {
+	s.grpcServer = grpc.NewServer()
+
+	taskRepo := taskPostgresRepo.NewTaskRepository(s.db)
+
+	taskService := service.NewTaskService(taskRepo)
+
+	taskHandler := grpcHandlers.NewTaskHandler(taskService)
+	pb.RegisterTaskServiceServer(s.grpcServer, taskHandler)
+
+	if s.config.GRPCEnableReflection {
+		reflection.Register(s.grpcServer)
+	}
+
+	return nil
+}
+
+func (s *Server) Stop() {
+	log.Println("shutting down task server...")
+
+	if s.grpcServer != nil {
+		s.grpcServer.GracefulStop()
+	}
+
+	if s.db != nil {
+		if err := s.db.Close(); err != nil {
+			log.Printf("failed to close database: %v", err)
+		}
+	}
+
+	log.Println("task server stopped")
+}