<Refactor gRPC address handling in main.go>

cmd/server/main.go

@@ -1,11 +1,11 @@
 package main
 
 import (
+	"fmt"
 	"google.golang.org/grpc"
 	"log"
 	"net"
 	"otel-trace-reciever/internal/config"
-
 	"otel-trace-reciever/internal/repository"
 	"otel-trace-reciever/internal/server"
 	"google.golang.org/grpc/reflection"
@@ -15,7 +15,15 @@ import (
 )
 
 func main() {
+	grpcHost := "0.0.0.0"
+	grpcPort := 4317
+	grpcAddress := fmt.Sprintf("%s:%d", grpcHost, grpcPort)
+
 	cfg, err := config.Load()
+	if err != nil {
+		log.Fatalf("Failed to load config: %v", err)
+	}
+
 	repo, err := repository.NewMongoRepository(cfg.MongoURI)
 	if err != nil {
 		log.Fatalf("Failed to create repository: %v", err)
@@ -29,13 +37,13 @@ func main() {
 
 	reflection.Register(grpcServer)
 
-	lis, err := net.Listen("tcp", "0.0.0.0:4317")
+	lis, err := net.Listen("tcp", grpcAddress)
 	if err != nil {
 		log.Fatalf("Failed to listen: %v", err)
 	}
 
-	log.Println("gRPC server listening on 0.0.0.0:4317")
+	log.Printf("gRPC server listening on %s", grpcAddress)
 	if err := grpcServer.Serve(lis); err != nil {
 		log.Fatalf("Failed to serve: %v", err)
 	}
-}
+}