replace class with interface

src/main/java/ru/nsu/fit/directors/userservice/event/OrderCancelledEvent.java

@@ -7,6 +7,6 @@
 @Getter
 @Setter
 @Accessors(chain = true)
-public class OrderCancelledEvent extends OrderEvent {
+public class OrderCancelledEvent implements OrderEvent {
     private Long orderId;
 }

src/main/java/ru/nsu/fit/directors/userservice/event/OrderCreatedEvent.java

@@ -12,7 +12,7 @@
 @Getter
 @Setter
 @Accessors(chain = true)
-public class OrderCreatedEvent extends OrderEvent {
+public class OrderCreatedEvent implements OrderEvent {
     @Min(value = 1, message = "Заказ не может быть на отрицательное количество людей.")
     private Integer guestCount;
     @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
@@ -21,9 +21,5 @@ public class OrderCreatedEvent extends OrderEvent {
     private LocalTime time;
     private Long establishmentId;
     private Long spotId;
-
-    public OrderCreatedEvent setUserId(Long userId) {
-        this.userId = userId;
-        return this;
-    }
+    private Long userId;
 }

src/main/java/ru/nsu/fit/directors/userservice/event/OrderEvent.java

@@ -1,5 +1,4 @@
 package ru.nsu.fit.directors.userservice.event;
 
-public class OrderEvent {
-    protected long userId;
+public interface OrderEvent {
 }

src/main/java/ru/nsu/fit/directors/userservice/service/OrderServiceImpl.java

@@ -30,8 +30,7 @@ public class OrderServiceImpl implements OrderService {
 
     @Override
     public void createOrder(RequestOrderDto order) {
-        User loggedUser = securityService.getLoggedInUser();
-        order.setUserId(loggedUser.getId());
+        order.setUserId(securityService.getLoggedInUser().getId());
         validateOrderTime(order);
         kafkaTemplate.send("orderTopic", toEvent(order));
     }