Handle review changes

cmd/serve.go

@@ -113,7 +113,6 @@ func serve() {
 		pm.Start(wg)
 		defer pm.Stop()
 
-		rpcPort := nitroConfig.InProcessNode.RpcPort
 		tlsCertFilepath := nitroConfig.InProcessNode.TlsCertFilepath
 		tlsKeyFilepath := nitroConfig.InProcessNode.TlsKeyFilepath
 
@@ -125,7 +124,7 @@ func serve() {
 			}
 		}
 
-		nitroRpcServer, err := initNitroRpcServer(nitroNode, pm, cert, rpcPort)
+		nitroRpcServer, err := initNitroRpcServer(nitroNode, pm, cert, nitroConfig.InProcessNode.RpcPort)
 		if err != nil {
 			logWithCommand.Fatal(err)
 		}
@@ -513,18 +512,24 @@ func initNitroRpcServer(node *nitroNode.Node, pm paymentsmanager.PaymentsManager
 }
 
 func readRpcQueryRates(filepath string) (map[string]*big.Int, error) {
+	result := make(map[string]*big.Int)
+
+	if filepath == "" {
+		logWithCommand.Warn("RPC query rates file path not provided")
+		return result, nil
+	}
+
 	jsonFile, err := os.Open(filepath)
 	defer jsonFile.Close()
 
 	if err != nil {
 		if errors.Is(err, fs.ErrNotExist) {
-			result := make(map[string]*big.Int)
+			logWithCommand.Warn("RPC query rates file does not exist")
 			return result, nil
 		}
 		return nil, err
 	}
 
-	var result map[string]*big.Int
 	decoder := json.NewDecoder(jsonFile)
 	err = decoder.Decode(&result)
 	if err != nil {