From: Kai Moritz <kai@juplo.de>
Date: Sun, 21 Aug 2022 16:10:09 +0000 (+0200)
Subject: Log-Meldungen bei Assign/Revoke verbessert und angeglichen
X-Git-Tag: sumup-adder---lvm-2-tage~6
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=6bfbab41a28c8fb6252d328954f5b7129b24ec25;p=demos%2Fkafka%2Ftraining

Log-Meldungen bei Assign/Revoke verbessert und angeglichen
---

diff --git a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
index cd9da64..109b205 100644
--- a/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
+++ b/src/main/java/de/juplo/kafka/ApplicationRebalanceListener.java
@@ -35,19 +35,33 @@ public class ApplicationRebalanceListener implements PollIntervalAwareConsumerRe
     partitions.forEach(tp ->
     {
       Integer partition = tp.partition();
+      log.info("{} - adding partition: {}", id, partition);
       this.partitions.add(partition);
       StateDocument document =
           stateRepository
               .findById(Integer.toString(partition))
               .orElse(new StateDocument(partition));
-      log.info("{} - adding partition: {}, offset={}", id, partition, document.offset);
       if (document.offset >= 0)
       {
         // Only seek, if a stored offset was found
         // Otherwise: Use initial offset, generated by Kafka
         consumer.seek(tp, document.offset);
+        log.info(
+            "{} - Seeking to offset {} for partition {}",
+            id,
+            document.offset,
+            partition);
       }
       recordHandler.addPartition(partition, document.state);
+      for (String user : document.state.keySet())
+      {
+        log.info(
+            "{} - Restored state for partition={}|user={}: {}",
+            id,
+            partition,
+            user,
+            document.state.get(user));
+      }
       adderResults.addPartition(partition, document.results);
     });
   }
@@ -58,16 +72,26 @@ public class ApplicationRebalanceListener implements PollIntervalAwareConsumerRe
     partitions.forEach(tp ->
     {
       Integer partition = tp.partition();
+      log.info("{} - removing partition: {}", id, partition);
       this.partitions.remove(partition);
       Long offset = consumer.position(tp);
-      log.info(
-          "{} - removing partition: {}, offset of next message {})",
-          id,
-          partition,
-          offset);
       if (commitsEnabled)
       {
+        log.info(
+            "{} - Storing {} as offset of next message for partition {}",
+            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));
       }