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-Tag: producer/simple-producer--fire+forget---2023-10-signal~2
X-Git-Url: https://juplo.de/gitweb/?a=commitdiff_plain;h=84cd0721b0efaf3151104c355399b08302d7f366;p=demos%2Fkafka%2Ftraining

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

diff --git a/README.sh b/README.sh
index 9d0f94f..b11792d 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
@@ -31,11 +31,8 @@ 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 495e21f..4d385c6 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -100,5 +100,5 @@ services:
       - setup
 
   producer:
-    image: juplo/simple-producer:1.0-SNAPSHOT
+    image: juplo/fire-forget:1.0-SNAPSHOT
     command: kafka:9092 test producer
diff --git a/pom.xml b/pom.xml
index 2928676..ab483d9 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>
   <version>1.0-SNAPSHOT</version>
 
diff --git a/src/main/java/de/juplo/kafka/SimpleProducer.java b/src/main/java/de/juplo/kafka/SimpleProducer.java
index db554d7..57796d0 100644
--- a/src/main/java/de/juplo/kafka/SimpleProducer.java
+++ b/src/main/java/de/juplo/kafka/SimpleProducer.java
@@ -17,8 +17,6 @@ public class SimpleProducer
   private final Producer<String, String> producer;
 
   private long produced = 0;
-  private volatile boolean running = true;
-  private volatile boolean done = false;
 
   public SimpleProducer(String broker, String topic, String clientId)
   {
@@ -35,23 +33,16 @@ public class SimpleProducer
 
   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 (InterruptedException e) {}
     finally
     {
-      log.info("{}: Closing the KafkaProducer", id);
-      producer.close();
       log.info("{}: Produced {} messages in total, exiting!", id, produced);
-      done = true;
     }
   }
 
@@ -126,21 +117,6 @@ public class SimpleProducer
 
     SimpleProducer instance = new SimpleProducer(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 SimpleProducer: broker={}, topic={}, client-id={}",
         broker,