From: Kai Moritz <kai@juplo.de>
Date: Sun, 12 Jun 2022 08:57:42 +0000 (+0200)
Subject: Das erzeugen des `ProducerRecord` wird dem `KafkaTemplate` überlassen
X-Git-Tag: bytestream-producer~6
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=9b2b80f42860bcc954edf72cae931e9ba9f2e4c5;p=demos%2Fkafka%2Ftraining

Das erzeugen des `ProducerRecord` wird dem `KafkaTemplate` überlassen
---

diff --git a/src/main/java/de/juplo/kafka/RestProducer.java b/src/main/java/de/juplo/kafka/RestProducer.java
index 56f3382..56758f8 100644
--- a/src/main/java/de/juplo/kafka/RestProducer.java
+++ b/src/main/java/de/juplo/kafka/RestProducer.java
@@ -1,7 +1,6 @@
 package de.juplo.kafka;
 
 import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.clients.producer.RecordMetadata;
 import org.springframework.http.HttpStatus;
 import org.springframework.kafka.core.KafkaTemplate;
@@ -37,26 +36,14 @@ public class RestProducer
       @RequestBody String value)
   {
     key = key.trim();
-    final ProducerRecord<String, Object> record = new ProducerRecord<>(
-        topic,  // Topic
-        key,    // Key
-        new ClientMessage(key, value) // Value
-    );
-
-    return send(record);
+    return send(key, new ClientMessage(key, value));
   }
 
   @PutMapping(path = "{key}")
   public DeferredResult<ProduceResult> message(@PathVariable String key)
   {
     key = key.trim();
-    final ProducerRecord<String, Object> record = new ProducerRecord<>(
-        topic,  // Topic
-        key,    // Key
-        new FooMessage(key, System.currentTimeMillis()) // Value
-    );
-
-    return send(record);
+    return send(key, new FooMessage(key, System.currentTimeMillis()));
   }
 
   @PostMapping(path = "/")
@@ -64,22 +51,16 @@ public class RestProducer
       @RequestBody String name)
   {
     name = name.trim();
-    final ProducerRecord<String, Object> record = new ProducerRecord<>(
-        topic,  // Topic
-        name,    // Key
-        new Greeting(name) // Value
-    );
-
-    return send(record);
+    return send(name, new Greeting(name));
   }
 
-  private DeferredResult<ProduceResult> send(ProducerRecord<String, Object> record)
+  private DeferredResult<ProduceResult> send(String key, Object value)
   {
     DeferredResult<ProduceResult> result = new DeferredResult<>();
 
     final long time = System.currentTimeMillis();
 
-    kafkaTemplate.send(record).addCallback(
+    kafkaTemplate.send(topic, key, value).addCallback(
       (sendResult) ->
       {
         long now = System.currentTimeMillis();
@@ -91,8 +72,8 @@ public class RestProducer
         log.debug(
             "{} - Sent key={} message={} partition={}/{} timestamp={} latency={}ms",
             id,
-            record.key(),
-            record.value(),
+            key,
+            value,
             metadata.partition(),
             metadata.offset(),
             metadata.timestamp(),
@@ -108,7 +89,7 @@ public class RestProducer
         log.error(
             "{} - ERROR key={} timestamp=-1 latency={}ms: {}",
             id,
-            record.key(),
+            key,
             now - time,
             e.toString()
         );
@@ -118,7 +99,7 @@ public class RestProducer
     log.trace(
         "{} - Queued key={} latency={}ms",
         id,
-        record.key(),
+        key,
         now - time
     );