updating scs-100 tutorial

scs-100/README.md

@@ -35,7 +35,7 @@ or give the full path)
 java -jar scs-100-0.0.1-SNAPSHOT.jar
 ```
 
-the application starts to listen on port 8080. make sure that port is not occupied by any other app already, if is try
+the application starts to listen on port 8080. make sure that port not being occupied by any other app already, if is try
 to pass the following parameter before `-jar` by adding `-Dserver.port=8081` as:
 
 ```shell

scs-100/src/main/java/com/ehsaniara/scs_kafka_intro/scs100/OrderService.java

@@ -74,9 +74,10 @@ public class OrderService {
 
         // just a simulation of create exception for random orders (1 in 2) in case of inventory insufficiency
         if (System.currentTimeMillis() % 2 == 0) {
-            orderIn.setOrderStatus(OrderStatus.INSUFFICIENT_INVENTORY);
+            orderIn.setOrderStatus(OrderStatus.OUT_OF_STOCK);
             orderDataBase.put(orderIn.getOrderUuid(), orderIn);
             log.warn("Let's assume we ran out of stock for item: {}", orderIn.getItemName());
+            Thread.sleep(5_000);//5 sec delay
             throw new OrderFailedException(String.format("insufficient inventory for order: %s", orderIn.getOrderUuid()));
         }
 

scs-100/src/main/java/com/ehsaniara/scs_kafka_intro/scs100/OrderStatus.java

@@ -6,7 +6,7 @@ import lombok.AllArgsConstructor;
 public enum OrderStatus {
     PENDING("PENDING"),
     INVENTORY_CHECKING("INVENTORY_CHECKING"),
-    INSUFFICIENT_INVENTORY("INSUFFICIENT_INVENTORY"),
+    OUT_OF_STOCK("OUT_OF_STOCK"),
     SHIPPED("SHIPPED"),
     CANCELED("CANCELED");
 

scs-100/src/main/resources/application.yml

@@ -11,7 +11,7 @@ spring:
         destination: scs-100.inventoryChecking
         group: ${spring.application.name}-inventoryChecking-group
         consumer:
-          maxAttempts: 1 # this example for simulating out of stock so there is no point of retrying after it failed in the first attempt
+          maxAttempts: 1 # on example we are simulating "out of stock" scenario, so there is no point for retrying after it failed in the first attempt
 
       order-dlq:
         destination: scs-100.ordering_dlq