Service ergänzt, der das Dead-Letter-Topic ausliest

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

diff --git a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
index 9e75112..ba15227 100644 (file)
--- a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
+++ b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
@@ -2,22 +2,17 @@ package de.juplo.kafka;
 
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.consumer.Consumer;
 import org.apache.kafka.clients.consumer.ConsumerRebalanceListener;
 import org.apache.kafka.common.TopicPartition;
+import org.springframework.kafka.listener.ConsumerAwareRebalanceListener;
 
-import java.time.Clock;
-import java.time.Duration;
-import java.time.Instant;
 import java.util.*;
-import java.util.concurrent.CountDownLatch;
 
 
 @RequiredArgsConstructor
 @Slf4j
-public class ApplicationRebalanceListener implements ConsumerRebalanceListener
+public class ApplicationRebalanceListener implements ConsumerAwareRebalanceListener
 {
-  private final Consumer consumer;
   private final ApplicationRecordHandler recordHandler;
   private final AdderResults adderResults;
   private final StateRepository stateRepository;
@@ -54,24 +49,6 @@ public class ApplicationRebalanceListener implements ConsumerRebalanceListener
   @Override
   public void onPartitionsRevoked(Collection<TopicPartition> partitions)
   {
-    log.info("{} - Commiting offsets for all previously assigned partitions", id);
-    CountDownLatch commitDone = new CountDownLatch(1);
-    consumer.commitAsync((offsets, e) ->
-    {
-      commitDone.countDown();
-      if (e == null)
-      {
-        log.error("{} - Could not commit offsets to Kafka!", id, e);
-      }
-      else
-      {
-        offsets.entrySet().stream().forEach(entry ->
-        {
-          log.info("{} - Commited offset for {}: {}", id, entry.getKey(), entry.getValue());
-        });
-      }
-    });
-
     partitions.forEach(tp ->
     {
       Integer partition = tp.partition();
@@ -90,19 +67,5 @@ public class ApplicationRebalanceListener implements ConsumerRebalanceListener
       Map<String, List<AdderResult>> results = adderResults.removePartition(partition);
       stateRepository.save(new StateDocument(partition, state, results));
     });
-
-    try
-    {
-      log.debug("{} - Waiting for async commit to complete", id);
-      commitDone.await();
-    }
-    catch (InterruptedException e)
-    {
-      log.warn(
-        "{} - Interrupted while waiting for async commit in onPartitionsRevoked({})",
-        id,
-        partitions,
-        e);
-    }
   }
 }