Vorlage

[demos/kafka/training] / src / main / java / de / juplo / kafka / SimpleConsumer.java

diff --git a/src/main/java/de/juplo/kafka/SimpleConsumer.java b/src/main/java/de/juplo/kafka/SimpleConsumer.java
index 3b0202f..82d6794 100644 (file)
--- a/src/main/java/de/juplo/kafka/SimpleConsumer.java
+++ b/src/main/java/de/juplo/kafka/SimpleConsumer.java
@@ -9,21 +9,23 @@ import org.apache.kafka.common.errors.WakeupException;
 
 import java.time.Duration;
 import java.util.Arrays;
+import java.util.concurrent.Callable;
 
 
 @Slf4j
 @RequiredArgsConstructor
-public class SimpleConsumer implements Runnable
+public class SimpleConsumer implements Callable<Integer>
 {
   private final String id;
   private final String topic;
   private final Consumer<String, Message> consumer;
+  private final MessageHandler messageHandler;
 
   private long consumed = 0;
 
 
   @Override
-  public void run()
+  public Integer call()
   {
     try
     {
@@ -50,11 +52,12 @@ public class SimpleConsumer implements Runnable
     catch(WakeupException e)
     {
       log.info("{} - Consumer was signaled to finish its work", id);
+      return 0;
     }
     catch(Exception e)
     {
-      log.error("{} - Unexpected error: {}, unsubscribing!", id, e.toString());
-      consumer.unsubscribe();
+      log.error("{} - Unexpected error: {}!", id, e.toString());
+      return 1;
     }
     finally
     {
@@ -73,5 +76,6 @@ public class SimpleConsumer implements Runnable
   {
     consumed++;
     log.info("{} - {}: {}/{} - {}={}", id, offset, topic, partition, key, value);
+    messageHandler.handle(key, value);
   }
 }