From: Kai Moritz <kai@juplo.de>
Date: Wed, 10 Jun 2026 19:32:14 +0000 (+0200)
Subject: Umbau in die lauffähige Vorlage mit Code
X-Git-Tag: springkafka/spring-producer--vorlage--2026-06-lvm
X-Git-Url: http://juplo.de/gitweb/?a=commitdiff_plain;h=79dc3aa8ee7f8f7ff405590cd0f98421e6d3ab87;p=demos%2Fkafka%2Ftraining

Umbau in die lauffähige Vorlage mit Code
---

diff --git a/README.sh b/README.sh
deleted file mode 100755
index 1d208d53..00000000
--- a/README.sh
+++ /dev/null
@@ -1,42 +0,0 @@
-#!/bin/bash
-
-IMAGE=juplo/spring-producer:2.0-SNAPSHOT
-
-if [ "$1" = "cleanup" ]
-then
-  docker compose -f docker/docker-compose.yml down -t0 -v --remove-orphans
-  mvn clean
-  exit
-fi
-
-docker compose -f docker/docker-compose.yml up -d --remove-orphans kafka-1 kafka-2 kafka-3
-docker compose -f docker/docker-compose.yml rm -svf producer
-
-if [[
-  $(docker image ls -q $IMAGE) == "" ||
-  "$1" = "build"
-]]
-then
-  mvn clean install || exit
-else
-  echo "Using image existing images:"
-  docker image ls $IMAGE
-fi
-
-docker compose -f docker/docker-compose.yml up --remove-orphans setup || exit 1
-
-
-docker compose -f docker/docker-compose.yml up -d producer
-docker compose -f docker/docker-compose.yml up -d peter ute
-sleep 15
-
-docker compose -f docker/docker-compose.yml stop producer
-
-echo
-echo "Von peter empfangen:"
-docker compose -f docker/docker-compose.yml logs peter | grep 'partition=test-.'
-echo
-echo "Von ute empfangen:"
-docker compose -f docker/docker-compose.yml logs ute | grep 'partition=test-.'
-
-docker compose -f docker/docker-compose.yml stop peter ute
diff --git a/src/main/java/de/juplo/kafka/AddNumberMessage.java b/src/main/java/de/juplo/kafka/AddNumberMessage.java
new file mode 100644
index 00000000..deb6350e
--- /dev/null
+++ b/src/main/java/de/juplo/kafka/AddNumberMessage.java
@@ -0,0 +1,11 @@
+package de.juplo.kafka;
+
+import lombok.Value;
+
+
+@Value
+public class AddNumberMessage implements SumupMessage
+{
+  private final int number;
+  private final int next;
+}
diff --git a/src/main/java/de/juplo/kafka/CalculateSumMessage.java b/src/main/java/de/juplo/kafka/CalculateSumMessage.java
new file mode 100644
index 00000000..6aa0121a
--- /dev/null
+++ b/src/main/java/de/juplo/kafka/CalculateSumMessage.java
@@ -0,0 +1,11 @@
+package de.juplo.kafka;
+
+
+import lombok.Value;
+
+
+@Value
+public class CalculateSumMessage implements SumupMessage
+{
+  private final int number;
+}
diff --git a/src/main/java/de/juplo/kafka/ExampleProducer.java b/src/main/java/de/juplo/kafka/ExampleProducer.java
index 93d0d173..e0b62b59 100644
--- a/src/main/java/de/juplo/kafka/ExampleProducer.java
+++ b/src/main/java/de/juplo/kafka/ExampleProducer.java
@@ -49,6 +49,14 @@ public class ExampleProducer implements Runnable
     {
       for (; running; i++)
       {
+        // TODO: Für eine der folgenden Übungen -- vorerst bitte ignorieren...
+        int number = (int) i % 10;
+        SumupMessage message = (i % 7 == 0)
+          ? new CalculateSumMessage(number)
+          : new AddNumberMessage(number, (int)i);
+
+        // send(Long.toString(number), message);
+
         send(Long.toString(i%10), Long.toString(i));
 
         if (throttle.isPositive())
diff --git a/src/main/java/de/juplo/kafka/SumupMessage.java b/src/main/java/de/juplo/kafka/SumupMessage.java
new file mode 100644
index 00000000..739efd1e
--- /dev/null
+++ b/src/main/java/de/juplo/kafka/SumupMessage.java
@@ -0,0 +1,5 @@
+package de.juplo.kafka;
+
+public interface SumupMessage
+{
+}