*

internal/transport/grpc/grpc.go

@@ -2,6 +2,7 @@ package grpc
 
 import (
 	"context"
+	"encoding/json"
 	"errors"
 	"log"
 	"net"
@@ -17,13 +18,17 @@ const (
 	topicRegistrations string = "registrations" // Топик для регистраций
 )
 
+type msg struct {
+	Code  string
+	Email string
+}
+
 type user struct {
 	ID        int32
-	Code      string
 	Login     string
 	Password  string
-	Email     string
 	Confirmed bool
+	msg
 }
 
 type AuthDBServer struct {
@@ -91,16 +96,24 @@ func (s *AuthDBServer) Registration(ctx context.Context, req *api.RegistrationRe
 	//
 	user := &user{
 		ID:        s.id,
-		Code:      code,
 		Login:     req.GetLogin(),
 		Password:  code, // TODO
-		Email:     req.GetEmail(),
 		Confirmed: false,
+		msg: msg{
+			Code:  code,
+			Email: req.GetEmail(),
+		},
 	}
 	s.users[req.Login] = user
 
 	// TODO
-	err := s.kafkaWriter.WriteMessage(user.Login, user.Email)
+	value, eru := json.Marshal(user.msg)
+	if eru != nil {
+		return nil, eru
+	}
+
+	//
+	err := s.kafkaWriter.WriteMessage([]byte(user.Login), value)
 	if err != nil {
 		log.Print(err)
 

internal/transport/kafka/kafka_writer.go

@@ -116,9 +116,9 @@ func (s *KafkaWriter) checkTopic() error {
 	return nil
 }
 
-func (s *KafkaWriter) WriteMessage(key string, value string) error {
+func (s *KafkaWriter) WriteMessage(key []byte, value []byte) error {
 	return s.writer.WriteMessages(s.ctx, kafka.Message{
-		Key:   []byte(key),
-		Value: []byte(value),
+		Key:   key,
+		Value: value,
 	})
 }