From d95119d9b40c397c5a9d87855791671a62f9eb3a Mon Sep 17 00:00:00 2001
From: Kai Moritz <kai@juplo.de>
Date: Sun, 13 Nov 2022 22:14:00 +0100
Subject: [PATCH] Vorlage

---
 README.sh                                         | 15 ++-------------
 .../de/juplo/kafka/ApplicationConfiguration.java  |  2 +-
 src/main/java/de/juplo/kafka/SimpleConsumer.java  |  8 ++++----
 src/main/resources/application.yml                |  6 ++----
 4 files changed, 9 insertions(+), 22 deletions(-)

diff --git a/README.sh b/README.sh
index a5a4774..a6c932e 100755
--- a/README.sh
+++ b/README.sh
@@ -34,19 +34,8 @@ while ! [[ $(http 0:8080/actuator/health 2> /dev/null) =~ "UP" ]]; do echo "Wait
 while ! [[ $(http 0:8081/actuator/health 2> /dev/null) =~ "UP" ]]; do echo "Waiting for consumer-1..."; sleep 1; done
 while ! [[ $(http 0:8082/actuator/health 2> /dev/null) =~ "UP" ]]; do echo "Waiting for consumer-2..."; sleep 1; done
 
-# tag::nachrichten[]
 echo 6  | http -v :8080/peter
 echo 77 | http -v :8080/klaus
-# end::nachrichten[]
 
-echo "Writing poison pill..."
-# tag::poisonpill[]
-echo 'BOOM!' | kafkacat -P -b :9092 -t test
-# end::poisonpill[]
-
-docker-compose -f docker/docker-compose.yml logs -f consumer-1 consumer-2
-
-echo "Restarting consumer-1..."
-# tag::restart[]
-docker-compose -f docker/docker-compose.yml up consumer-1
-# end::restart[]
+sleep 5
+docker-compose -f docker/docker-compose.yml logs consumer-1 consumer-2
diff --git a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
index a8b3e1d..62d61a2 100644
--- a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
+++ b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
@@ -15,7 +15,7 @@ public class ApplicationConfiguration
 {
   @Bean
   public SimpleConsumer simpleConsumer(
-      Consumer<String, Message> kafkaConsumer,
+      Consumer<String, String> kafkaConsumer,
       KafkaProperties kafkaProperties,
       ApplicationProperties applicationProperties)
   {
diff --git a/src/main/java/de/juplo/kafka/SimpleConsumer.java b/src/main/java/de/juplo/kafka/SimpleConsumer.java
index 45f9b94..bd754fc 100644
--- a/src/main/java/de/juplo/kafka/SimpleConsumer.java
+++ b/src/main/java/de/juplo/kafka/SimpleConsumer.java
@@ -18,7 +18,7 @@ public class SimpleConsumer implements Callable<Integer>
 {
   private final String id;
   private final String topic;
-  private final Consumer<String, Message> consumer;
+  private final Consumer<String, String> consumer;
 
   private long consumed = 0;
 
@@ -33,11 +33,11 @@ public class SimpleConsumer implements Callable<Integer>
 
       while (true)
       {
-        ConsumerRecords<String, Message> records =
+        ConsumerRecords<String, String> records =
             consumer.poll(Duration.ofSeconds(1));
 
         log.info("{} - Received {} messages", id, records.count());
-        for (ConsumerRecord<String, Message> record : records)
+        for (ConsumerRecord<String, String> record : records)
         {
           handleRecord(
             record.topic(),
@@ -72,7 +72,7 @@ public class SimpleConsumer implements Callable<Integer>
     Integer partition,
     Long offset,
     String key,
-    Message value)
+    Object value)
   {
     consumed++;
     log.info("{} - {}: {}/{} - {}={}", id, offset, topic, partition, key, value);
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 07d0625..c62240e 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -30,13 +30,11 @@ spring:
       auto-offset-reset: earliest
       auto-commit-interval: 5s
       key-deserializer: org.apache.kafka.common.serialization.StringDeserializer
-      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
+      value-deserializer: org.apache.kafka.common.serialization.StringDeserializer
       properties:
         partition.assignment.strategy: org.apache.kafka.clients.consumer.StickyAssignor
         metadata.max.age.ms: 1000
-        spring.json.type.mapping: >
-          ADD:de.juplo.kafka.MessageAddNumber,
-          CALC:de.juplo.kafka.MessageCalculateSum
+        spring.json.type.mapping: TODO
 logging:
   level:
     root: INFO
-- 
2.20.1