X-Git-Url: https://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationRebalanceListener.java;fp=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationRebalanceListener.java;h=d31929519e61a4a6fc18f84e4590a7295f757c4f;hb=384ed293b9d6d71f68031f92bd7bf60670a7ba4b;hp=eef0d00d73e07f8eda6053d3334498f439e6f7d7;hpb=4210993f369acfa07ae8d388eb8e32517005de6f;p=demos%2Fkafka%2Ftraining

diff --git a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
index eef0d00..d319295 100644
--- a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
+++ b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
@@ -3,7 +3,6 @@ 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 java.util.*;
@@ -11,7 +10,7 @@ import java.util.*;
 
 @RequiredArgsConstructor
 @Slf4j
-public class ApplicationRebalanceListener implements ConsumerRebalanceListener
+public class ApplicationRebalanceListener implements CommittingConsumerRebalanceListener
 {
   private final ApplicationRecordHandler recordHandler;
   private final AdderResults adderResults;
@@ -21,6 +20,8 @@ public class ApplicationRebalanceListener implements ConsumerRebalanceListener
 
   private final Set<Integer> partitions = new HashSet<>();
 
+  private boolean commitsEnabled = true;
+
   @Override
   public void onPartitionsAssigned(Collection<TopicPartition> partitions)
   {
@@ -50,14 +51,17 @@ public class ApplicationRebalanceListener implements ConsumerRebalanceListener
   @Override
   public void onPartitionsRevoked(Collection<TopicPartition> partitions)
   {
-    log.info("{} - Commiting offsets for all previously assigned partitions", id);
-    try
-    {
-      consumer.commitSync();
-    }
-    catch (Exception e)
+    if (commitsEnabled)
     {
-      log.warn("{} - Could not commit offsets in onPartitionsRevoked():", id, e);
+      log.info("{} - Commiting offsets for all previously assigned partitions", id);
+      try
+      {
+        consumer.commitSync();
+      }
+      catch (Exception e)
+      {
+        log.warn("{} - Could not commit offsets in onPartitionsRevoked():", id, e);
+      }
     }
 
     partitions.forEach(tp ->
@@ -79,4 +83,16 @@ public class ApplicationRebalanceListener implements ConsumerRebalanceListener
       stateRepository.save(new StateDocument(partition, state, results));
     });
   }
+
+  @Override
+  public void enableCommits()
+  {
+    commitsEnabled = true;
+  }
+
+  @Override
+  public void disableCommits()
+  {
+    commitsEnabled = false;
+  }
 }