From: Kai Moritz <kai@juplo.de>
Date: Mon, 5 Dec 2022 19:35:50 +0000 (+0100)
Subject: Vorlage & Setup für Fire-n-Forget-Übung überarbeitet
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=d1a3c412999501164bff6ad4b43713d3151d586d;p=demos%2Fkafka%2Ftraining

Vorlage & Setup für Fire-n-Forget-Übung überarbeitet
---

diff --git a/README.sh b/README.sh
index 97ca7cc..32c0ecd 100755
--- a/README.sh
+++ b/README.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-IMAGE=juplo/simple-producer:1.0-SNAPSHOT
+IMAGE=juplo/fire-forget:1.0-SNAPSHOT
 
 if [ "$1" = "cleanup" ]
 then
@@ -30,11 +30,8 @@ sleep 1
 docker compose -f docker/docker-compose.yml logs setup
 
 docker compose -f docker/docker-compose.yml ps
-docker compose -f docker/docker-compose.yml up -d producer
-sleep 5
+docker compose -f docker/docker-compose.yml up producer
 
-docker compose -f docker/docker-compose.yml exec cli kafkacat -b kafka:9092 -t test -c 20 -f'topic=%t\tpartition=%p\toffset=%o\tkey=%k\tvalue=%s\n'
-
-docker compose -f docker/docker-compose.yml stop producer
-docker compose -f docker/docker-compose.yml exec cli kafkacat -b kafka:9092 -t test -e -f'topic=%t\tpartition=%p\toffset=%o\tkey=%k\tvalue=%s\n'
-docker compose -f docker/docker-compose.yml logs producer
+# tag::kafkacat[]
+kafkacat -b :9092 -e -q -t test | wc -l
+# end::kafkacat[]
diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 531a116..fc5e67d 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -188,7 +188,7 @@ services:
       - kafka-3
 
   producer:
-    image: juplo/simple-producer:1.0-SNAPSHOT
+    image: juplo/fire-forget:1.0-SNAPSHOT
     command: kafka:9092 test producer
 
 volumes:
diff --git a/pom.xml b/pom.xml
index ad7f17a..61a2d24 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,7 +12,7 @@
   </parent>
 
   <groupId>de.juplo.kafka</groupId>
-  <artifactId>simple-producer</artifactId>
+  <artifactId>fire-forget</artifactId>
   <name>Super Simple Producer</name>
   <description>A Simple Producer, programmed with pure Java, that sends messages via Kafka</description>
   <version>1.0-SNAPSHOT</version>
diff --git a/src/main/java/de/juplo/kafka/ExampleProducer.java b/src/main/java/de/juplo/kafka/ExampleProducer.java
index 06e14ef..4191620 100644
--- a/src/main/java/de/juplo/kafka/ExampleProducer.java
+++ b/src/main/java/de/juplo/kafka/ExampleProducer.java
@@ -16,8 +16,6 @@ public class ExampleProducer
   private final String topic;
   private final Producer<String, String> producer;
 
-  private volatile boolean running = true;
-  private volatile boolean done = false;
   private long produced = 0;
 
   public ExampleProducer(String broker, String topic, String clientId)
@@ -35,14 +33,11 @@ public class ExampleProducer
 
   public void run()
   {
-    long i = 0;
-
     try
     {
-      for (; running; i++)
+      for (int i = 0; i < 10000 ; i++)
       {
         send(Long.toString(i%10), Long.toString(i));
-        Thread.sleep(500);
       }
     }
     catch (Exception e)
@@ -51,10 +46,7 @@ public class ExampleProducer
     }
     finally
     {
-      log.info("{}: Closing the KafkaProducer", id);
-      producer.close();
       log.info("{}: Produced {} messages in total, exiting!", id, produced);
-      done = true;
     }
   }
 
@@ -128,21 +120,6 @@ public class ExampleProducer
 
     ExampleProducer instance = new ExampleProducer(broker, topic, clientId);
 
-    Runtime.getRuntime().addShutdownHook(new Thread(() ->
-    {
-      instance.running = false;
-      while (!instance.done)
-      {
-        log.info("Waiting for main-thread...");
-        try
-        {
-          Thread.sleep(1000);
-        }
-        catch (InterruptedException e) {}
-      }
-      log.info("Shutdown completed.");
-    }));
-
     log.info(
         "Running ExampleProducer: broker={}, topic={}, client-id={}",
         broker,