NEU

[demos/kafka/chat] / src / main / java / de / juplo / kafka / chat / backend / persistence / kafka / ChatMessageChannel.java

diff --git a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatMessageChannel.java b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatMessageChannel.java
index 69947a9..7b19bb6 100644 (file)
--- a/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatMessageChannel.java
+++ b/src/main/java/de/juplo/kafka/chat/backend/persistence/kafka/ChatMessageChannel.java
@@ -17,15 +17,13 @@ import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 import java.time.*;
-import java.util.Collection;
-import java.util.List;
-import java.util.Map;
-import java.util.UUID;
+import java.util.*;
+import java.util.concurrent.Callable;
 import java.util.stream.IntStream;
 
 
 @Slf4j
-public class ChatMessageChannel implements Runnable, ConsumerRebalanceListener
+public class ChatMessageChannel implements Callable<Optional<Exception>>, ConsumerRebalanceListener
 {
   private final String topic;
   private final Producer<String, MessageTo> producer;
@@ -155,7 +153,7 @@ public class ChatMessageChannel implements Runnable, ConsumerRebalanceListener
   }
 
   @Override
-  public void run()
+  public Optional<Exception> call()
   {
     consumer.subscribe(List.of(topic));
 
@@ -193,7 +191,15 @@ public class ChatMessageChannel implements Runnable, ConsumerRebalanceListener
         log.info("Received WakeupException, exiting!");
         running = false;
       }
+      catch (Exception e)
+      {
+        log.error("Exiting abnormally!");
+        return Optional.of(e);
+      }
     }
+
+    log.info("Exiting normally");
+    return Optional.empty();
   }
 
   void loadMessages(ConsumerRecords<String, MessageTo> records)