From 361564abbaf2007394c6fe253c0edaf4decd2dcd Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Fri, 12 Aug 2022 22:08:12 +0200
Subject: [PATCH 1/1] Version des `EndlessProducer`, der Nachrichten vom Typ
 `Long` schreibt

---
 README.sh                                         |  2 +-
 docker-compose.yml                                |  2 +-
 pom.xml                                           |  5 +++--
 src/main/java/de/juplo/kafka/EndlessProducer.java | 11 ++++++-----
 4 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/README.sh b/README.sh
index 73ceebc..08fc449 100755
--- a/README.sh
+++ b/README.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-IMAGE=juplo/endless-producer:1.0-SNAPSHOT
+IMAGE=juplo/endless-long-producer:1.0-SNAPSHOT
 
 if [ "$1" = "cleanup" ]
 then
diff --git a/docker-compose.yml b/docker-compose.yml
index a368379..d6855e9 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -37,7 +37,7 @@ services:
     command: sleep infinity
 
   producer:
-    image: juplo/endless-producer:1.0-SNAPSHOT
+    image: juplo/endless-long-producer:1.0-SNAPSHOT
     ports:
       - 8080:8080
     environment:
diff --git a/pom.xml b/pom.xml
index af4a89f..5f145fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,8 +12,9 @@
   </parent>
 
   <groupId>de.juplo.kafka</groupId>
-  <artifactId>endless-producer</artifactId>
-  <name>Endless Producer: a Simple Producer that endlessly writes numbers into a topic</name>
+  <artifactId>endless-long-producer</artifactId>
+  <name>Endless Long-Producer</name>
+  <description>A Simple Producer that endlessly writes numbers into a topic (as long's!)</description>
   <version>1.0-SNAPSHOT</version>
 
   <dependencies>
diff --git a/src/main/java/de/juplo/kafka/EndlessProducer.java b/src/main/java/de/juplo/kafka/EndlessProducer.java
index 7a5b324..9c69f31 100644
--- a/src/main/java/de/juplo/kafka/EndlessProducer.java
+++ b/src/main/java/de/juplo/kafka/EndlessProducer.java
@@ -3,6 +3,7 @@ package de.juplo.kafka;
 import lombok.extern.slf4j.Slf4j;
 import org.apache.kafka.clients.producer.KafkaProducer;
 import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.common.serialization.LongSerializer;
 import org.apache.kafka.common.serialization.StringSerializer;
 
 import javax.annotation.PreDestroy;
@@ -18,7 +19,7 @@ public class EndlessProducer implements Runnable
   private final String id;
   private final String topic;
   private final int throttleMs;
-  private final KafkaProducer<String, String> producer;
+  private final KafkaProducer<String, Long> producer;
 
   private boolean running = false;
   private long i = 0;
@@ -42,7 +43,7 @@ public class EndlessProducer implements Runnable
     props.put("client.id", clientId);
     props.put("acks", acks);
     props.put("key.serializer", StringSerializer.class.getName());
-    props.put("value.serializer", StringSerializer.class.getName());
+    props.put("value.serializer", LongSerializer.class.getName());
 
     this.producer = new KafkaProducer<>(props);
   }
@@ -54,7 +55,7 @@ public class EndlessProducer implements Runnable
     {
       for (; running; i++)
       {
-        send(Long.toString(i%10), Long.toString(i));
+        send(Long.toString(i%10), i);
 
         if (throttleMs > 0)
         {
@@ -85,11 +86,11 @@ public class EndlessProducer implements Runnable
     }
   }
 
-  void send(String key, String value)
+  void send(String key, Long value)
   {
     final long time = System.currentTimeMillis();
 
-    final ProducerRecord<String, String> record = new ProducerRecord<>(
+    final ProducerRecord<String, Long> record = new ProducerRecord<>(
         topic,  // Topic
         key,    // Key
         value   // Value
-- 
2.20.1