feat(transport): added ability to enable gRPC reflection

.env.template

@@ -2,4 +2,5 @@
 # Below all environment variables and default values
 
 GRPC_PORT=50051
+GRPC_ENABLE_REFLECTION=false
 LOG_LEVEL=info

README.md

@@ -33,8 +33,9 @@ And setup env vars according to your needs.
 ## Configuration
 
 ```bash
-GRPC_PORT=50051        # gRPC server port
-LOG_LEVEL=info         # logging severity (debug, info, warn, error)
+GRPC_PORT=50051              # gRPC server port
+GRPC_ENABLE_REFLECTION=false # whether to enable gRPC reflection or not
+LOG_LEVEL=info               # logging severity (debug, info, warn, error)
 ```
 
 ## Running

internal/config/config.go

@@ -9,8 +9,9 @@ import (
 )
 
 type Config struct {
-	GRPCPort int
-	LogLevel string
+	GRPCPort             int
+	GRPCEnableReflection bool
+	LogLevel             string
 }
 
 func Load() (*Config, error) {
@@ -27,6 +28,13 @@ func Load() (*Config, error) {
 	}
 	config.GRPCPort = port
 
+	enableReflectionStr := getEnv("GRPC_ENABLE_REFLECTION", "false")
+	enableReflection, err := strconv.ParseBool(enableReflectionStr)
+	if err != nil {
+		return nil, err
+	}
+	config.GRPCEnableReflection = enableReflection
+
 	config.LogLevel = getEnv("LOG_LEVEL", "info")
 
 	return config, nil

internal/server/server.go

@@ -12,6 +12,7 @@ import (
 	pb "orderservice/pkg/api/order"
 
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/reflection"
 )
 
 type Server struct {
@@ -36,6 +37,11 @@ func New(cfg *config.Config) *Server {
 func (s *Server) RegisterServices() {
 	orderService := service.NewOrderServiceServer()
 	pb.RegisterOrderServiceServer(s.grpcServer, orderService)
+
+	if s.config.GRPCEnableReflection {
+		reflection.Register(s.grpcServer)
+		log.Println("gRPC server will start with reflection")
+	}
 }
 
 func (s *Server) Start() error {