From: Kai Moritz <kai@juplo.de>
Date: Fri, 14 Mar 2025 09:21:52 +0000 (+0100)
Subject: Ergebniskontrolle über das zurückgegebenen Future<RecordMetadata>
X-Git-Tag: grundlagen/simple-producer--completablefuture--2026-03-22--22-01~6
X-Git-Url: https://juplo.de/gitweb/?a=commitdiff_plain;h=b1a93930c4e9bfde928c442d79673d6b8643f9f4;p=demos%2Fkafka%2Ftraining

Ergebniskontrolle über das zurückgegebenen Future<RecordMetadata>
---

diff --git a/src/main/java/de/juplo/kafka/ExampleProducer.java b/src/main/java/de/juplo/kafka/ExampleProducer.java
index a7645889..c81d3bf7 100644
--- a/src/main/java/de/juplo/kafka/ExampleProducer.java
+++ b/src/main/java/de/juplo/kafka/ExampleProducer.java
@@ -1,12 +1,14 @@
 package de.juplo.kafka;
 
 import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.producer.Producer;
 import org.apache.kafka.clients.producer.KafkaProducer;
+import org.apache.kafka.clients.producer.Producer;
 import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.clients.producer.RecordMetadata;
 import org.apache.kafka.common.serialization.StringSerializer;
 
 import java.util.Properties;
+import java.util.concurrent.CompletableFuture;
 
 
 @Slf4j
@@ -71,7 +73,20 @@ public class ExampleProducer
       value   // Value
     );
 
-    producer.send(record, (metadata, e) ->
+    CompletableFuture<RecordMetadata> completableFuture = CompletableFuture
+      .supplyAsync(() ->
+      {
+        try
+        {
+          return producer.send(record).get();
+        }
+        catch (Exception e)
+        {
+          throw new RuntimeException(e);
+        }
+      });
+
+    completableFuture.whenComplete((metadata, e) ->
     {
       long sendRequestProcessed = System.currentTimeMillis();
       if (e == null)