Verbesserungen aus 'stored-state' nach 'rebalance-listener' gemerged

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

diff --git a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
index 766740b..7a0a8ad 100644 (file)
--- a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
+++ b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
@@ -1,6 +1,5 @@
 package de.juplo.kafka;
 
-import org.apache.kafka.clients.consumer.ConsumerRecord;
 import org.apache.kafka.clients.consumer.KafkaConsumer;
 import org.apache.kafka.common.serialization.LongDeserializer;
 import org.apache.kafka.common.serialization.StringDeserializer;
@@ -11,7 +10,6 @@ import org.springframework.context.annotation.Configuration;
 import java.util.Properties;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
-import java.util.function.Consumer;
 
 
 @Configuration
@@ -19,19 +17,27 @@ import java.util.function.Consumer;
 public class ApplicationConfiguration
 {
   @Bean
-  public Consumer<ConsumerRecord<String, Long>> consumer()
+  public KeyCountingRecordHandler keyCountingRecordHandler()
   {
-    return (record) ->
-    {
-      // Handle record
-    };
+    return new KeyCountingRecordHandler();
+  }
+
+  @Bean
+  public KeyCountingRebalanceListener keyCountingRebalanceListener(
+      KeyCountingRecordHandler keyCountingRecordHandler,
+      ApplicationProperties properties)
+  {
+    return new KeyCountingRebalanceListener(
+        keyCountingRecordHandler,
+        properties.getClientId());
   }
 
   @Bean
   public EndlessConsumer<String, Long> endlessConsumer(
       KafkaConsumer<String, Long> kafkaConsumer,
       ExecutorService executor,
-      Consumer<ConsumerRecord<String, Long>> handler,
+      KeyCountingRebalanceListener keyCountingRebalanceListener,
+      KeyCountingRecordHandler keyCountingRecordHandler,
       ApplicationProperties properties)
   {
     return
@@ -40,7 +46,8 @@ public class ApplicationConfiguration
             properties.getClientId(),
             properties.getTopic(),
             kafkaConsumer,
-            handler);
+            keyCountingRebalanceListener,
+            keyCountingRecordHandler);
   }
 
   @Bean
@@ -55,6 +62,7 @@ public class ApplicationConfiguration
     Properties props = new Properties();
 
     props.put("bootstrap.servers", properties.getBootstrapServer());
+    props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
     props.put("group.id", properties.getGroupId());
     props.put("client.id", properties.getClientId());
     props.put("auto.offset.reset", properties.getAutoOffsetReset());