X-Git-Url: http://juplo.de/gitweb/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fde%2Fjuplo%2Fkafka%2FEndlessConsumer.java;h=a21dd86c925b028c8ac094f1e78713c2beb52405;hb=83a4bf324f5a7ec6010a7921118ec7d6e8f997cf;hp=b173b12cea4be841c82a944695bc702314c28e86;hpb=fb966920f18413076a28876ffcd125c84f9a6f06;p=demos%2Fkafka%2Ftraining

diff --git a/src/main/java/de/juplo/kafka/EndlessConsumer.java b/src/main/java/de/juplo/kafka/EndlessConsumer.java
index b173b12..a21dd86 100644
--- a/src/main/java/de/juplo/kafka/EndlessConsumer.java
+++ b/src/main/java/de/juplo/kafka/EndlessConsumer.java
@@ -19,9 +19,10 @@ import java.util.concurrent.locks.ReentrantLock;
 
 @Slf4j
 @RequiredArgsConstructor
-public class EndlessConsumer<K, V> implements Runnable
+public class EndlessConsumer<K, V> implements ConsumerRebalanceListener, Runnable
 {
   private final ExecutorService executor;
+  private final PartitionStatisticsRepository repository;
   private final String id;
   private final String topic;
   private final Consumer<K, V> consumer;
@@ -37,55 +38,61 @@ public class EndlessConsumer<K, V> implements Runnable
   private final Map<Integer, Long> offsets = new HashMap<>();
 
 
+  @Override
+  public void onPartitionsRevoked(Collection<TopicPartition> partitions)
+  {
+    partitions.forEach(tp ->
+    {
+      Integer partition = tp.partition();
+      Long newOffset = consumer.position(tp);
+      Long oldOffset = offsets.remove(partition);
+      log.info(
+          "{} - removing partition: {}, consumed {} records (offset {} -> {})",
+          id,
+          partition,
+          newOffset - oldOffset,
+          oldOffset,
+          newOffset);
+      Map<String, Long> removed = seen.remove(partition);
+      for (String key : removed.keySet())
+      {
+        log.info(
+            "{} - Seen {} messages for partition={}|key={}",
+            id,
+            removed.get(key),
+            partition,
+            key);
+      }
+      repository.save(new StatisticsDocument(partition, removed));
+    });
+  }
+
+  @Override
+  public void onPartitionsAssigned(Collection<TopicPartition> partitions)
+  {
+    partitions.forEach(tp ->
+    {
+      Integer partition = tp.partition();
+      Long offset = consumer.position(tp);
+      log.info("{} - adding partition: {}, offset={}", id, partition, offset);
+      offsets.put(partition, offset);
+      seen.put(
+          partition,
+          repository
+              .findById(Integer.toString(tp.partition()))
+              .map(document -> document.statistics)
+              .orElse(new HashMap<>()));
+    });
+  }
+
+
   @Override
   public void run()
   {
     try
     {
       log.info("{} - Subscribing to topic {}", id, topic);
-      consumer.subscribe(Arrays.asList(topic), new ConsumerRebalanceListener()
-      {
-        @Override
-        public void onPartitionsRevoked(Collection<TopicPartition> partitions)
-        {
-          partitions.forEach(tp ->
-          {
-            Integer partition = tp.partition();
-            Long newOffset = consumer.position(tp);
-            Long oldOffset = offsets.remove(partition);
-            log.info(
-                "{} - removing partition: {}, consumed {} records (offset {} -> {})",
-                id,
-                partition,
-                newOffset - oldOffset,
-                oldOffset,
-                newOffset);
-            Map<String, Long> removed = seen.remove(partition);
-            for (String key : removed.keySet())
-            {
-              log.info(
-                  "{} - Seen {} messages for partition={}|key={}",
-                  id,
-                  removed.get(key),
-                  partition,
-                  key);
-            }
-          });
-        }
-
-        @Override
-        public void onPartitionsAssigned(Collection<TopicPartition> partitions)
-        {
-          partitions.forEach(tp ->
-          {
-            Integer partition = tp.partition();
-            Long offset = consumer.position(tp);
-            log.info("{} - adding partition: {}, offset={}", id, partition, offset);
-            offsets.put(partition, offset);
-            seen.put(partition, new HashMap<>());
-          });
-        }
-      });
+      consumer.subscribe(Arrays.asList(topic), this);
 
       while (true)
       {