X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2FApplicationRebalanceListener.java;h=365319780b02ecf106557787b484a1493cc3c43e;hb=907fdde716b24bc352f863c06337eda647bb1a59;hp=8e8464fbb09237f56257a69922c90c39f8abe09f;hpb=348477f6e4ff77e78bf7b6db66e4716663c9512d;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 8e8464f..3653197 100644
--- a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
+++ b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
@@ -5,9 +5,6 @@ import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.consumer.Consumer;
 import org.apache.kafka.common.TopicPartition;
 
-import java.time.Clock;
-import java.time.Duration;
-import java.time.Instant;
 import java.util.*;
 
 
@@ -20,15 +17,10 @@ public class ApplicationRebalanceListener implements RebalanceListener
   private final StateRepository stateRepository;
   private final String id;
   private final String topic;
-  private final Clock clock;
-  private final Duration commitInterval;
   private final Consumer consumer;
 
   private final Set<Integer> partitions = new HashSet<>();
 
-  private Instant lastCommit = Instant.EPOCH;
-  private boolean commitsEnabled = true;
-
   @Override
   public void onPartitionsAssigned(Collection<TopicPartition> partitions)
   {
@@ -74,31 +66,24 @@ public class ApplicationRebalanceListener implements RebalanceListener
       Integer partition = tp.partition();
       log.info("{} - removing partition: {}", id, partition);
       this.partitions.remove(partition);
+      Map<String, AdderResult> state = recordHandler.removePartition(partition);
       Long offset = consumer.position(tp);
-      if (commitsEnabled)
+      log.info(
+          "{} - offset of next unseen message for partition {} is {}",
+          id,
+          partition,
+          offset);
+      for (String user : state.keySet())
       {
         log.info(
-            "{} - Storing {} as offset of next message for partition {}",
+            "{} - Saved state for partition={}|user={}: {}",
             id,
-            offset,
-            partition);
-        Map<String, AdderResult> state = recordHandler.removePartition(partition);
-        for (String user : state.keySet())
-        {
-          log.info(
-              "{} - Saved state for partition={}|user={}: {}",
-              id,
-              partition,
-              user,
-              state.get(user));
-        }
-        Map<String, List<AdderResult>> results = adderResults.removePartition(partition);
-        stateRepository.save(new StateDocument(partition, state, results, offset));
-      }
-      else
-      {
-        log.info("{} - Offset commits are disabled! Last commit: {}", id, lastCommit);
+            partition,
+            user,
+            state.get(user));
       }
+      Map<String, List<AdderResult>> results = adderResults.removePartition(partition);
+      stateRepository.save(new StateDocument(partition, state, results, offset));
     });
   }
 
@@ -106,34 +91,29 @@ public class ApplicationRebalanceListener implements RebalanceListener
   @Override
   public void beforeNextPoll()
   {
-    if (!commitsEnabled)
-    {
-      log.info("{} - Offset commits are disabled! Last commit: {}", id, lastCommit);
-      return;
-    }
-
-    if (lastCommit.plus(commitInterval).isBefore(clock.instant()))
-    {
-      log.debug("{} - Storing data and offsets, last commit: {}", id, lastCommit);
-      partitions.forEach(partition -> stateRepository.save(
-          new StateDocument(
-              partition,
-              recordHandler.getState(partition).getState(),
-              adderResults.getState(partition),
-              consumer.position(new TopicPartition(topic, partition)))));
-      lastCommit = clock.instant();
-    }
-  }
-
-  @Override
-  public void enableCommits()
-  {
-    commitsEnabled = true;
-  }
-
-  @Override
-  public void disableCommits()
-  {
-    commitsEnabled = false;
+    partitions
+      .stream()
+      .forEach(partition ->
+      {
+        log.info("{} - persisting state & offset for partition: {}", id, partition);
+        Map<String, AdderResult> state = recordHandler.getState(partition).getState();
+        Long offset = consumer.position(new TopicPartition(topic, partition));
+        log.info(
+          "{} - offset of next unseen message for partition {} is {}",
+          id,
+          partition,
+          offset);
+        for (String user : state.keySet())
+        {
+          log.info(
+            "{} - Saved state for partition={}|user={}: {}",
+            id,
+            partition,
+            user,
+            state.get(user));
+        }
+        Map<String, List<AdderResult>> results = adderResults.getState(partition);
+        stateRepository.save(new StateDocument(partition, state, results, offset));
+      });
   }
 }