Vorlage für die Übung zum `JsonDeserializer`

diff --git a/README.sh b/README.sh
deleted file mode 100755 (executable)
index 7152ec9..0000000
--- a/README.sh
+++ /dev/null
@@ -1,39 +0,0 @@
-#!/bin/bash
-
-IMAGE=juplo/spring-consumer:1.1-json-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 consumer
-
-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 consumer
-
-sleep 5
-docker compose -f docker/docker-compose.yml stop consumer
-
-docker compose -f docker/docker-compose.yml start consumer
-sleep 5
-
-docker compose -f docker/docker-compose.yml stop producer consumer
-docker compose -f docker/docker-compose.yml logs consumer

diff --git a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
index 38a400b3f2daa0781d0d8e400562afb34c884ffa..a45c1505d4697303b999cba64acac0a32d0f16e9 100644 (file)
--- a/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
+++ b/src/main/java/de/juplo/kafka/ApplicationConfiguration.java
@@ -3,7 +3,6 @@ package de.juplo.kafka;
 import org.apache.kafka.clients.consumer.Consumer;
 import org.apache.kafka.clients.consumer.KafkaConsumer;
 import org.apache.kafka.common.serialization.StringDeserializer;
-import org.springframework.kafka.support.serializer.JsonDeserializer;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.annotation.Bean;
@@ -18,7 +17,7 @@ public class ApplicationConfiguration
 {
   @Bean
   public ExampleConsumer exampleConsumer(
-    Consumer<String, Message> kafkaConsumer,
+    Consumer<String, String> kafkaConsumer,
     ApplicationProperties properties,
     ConfigurableApplicationContext applicationContext)
   {
@@ -30,7 +29,7 @@ public class ApplicationConfiguration
   }
 
   @Bean(destroyMethod = "")
-  public KafkaConsumer<String, Message> kafkaConsumer(ApplicationProperties properties)
+  public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
   {
     Properties props = new Properties();
     props.put("bootstrap.servers", properties.getBootstrapServer());
@@ -46,8 +45,7 @@ public class ApplicationConfiguration
     }
     props.put("metadata.max.age.ms", 5000); //  5 Sekunden
     props.put("key.deserializer", StringDeserializer.class.getName());
-    props.put("value.deserializer", JsonDeserializer.class.getName());
-    props.put("spring.json.type.mapping", "ADD:de.juplo.kafka.MessageAddNumber,CALC:de.juplo.kafka.MessageCalculateSum");
+    props.put("value.deserializer", StringDeserializer.class.getName());
 
     return new KafkaConsumer<>(props);
   }

diff --git a/src/main/java/de/juplo/kafka/ExampleConsumer.java b/src/main/java/de/juplo/kafka/ExampleConsumer.java
index 3aac7dba93c826a624066ea0a8200c1626b50eda..30120f8f9ae044d9506ae9e14baa0fbfbc7fe54c 100644 (file)
--- a/src/main/java/de/juplo/kafka/ExampleConsumer.java
+++ b/src/main/java/de/juplo/kafka/ExampleConsumer.java
@@ -16,7 +16,7 @@ public class ExampleConsumer implements Runnable, SmartLifecycle
 {
   private final String id;
   private final String topic;
-  private final Consumer<String, Message> consumer;
+  private final Consumer<String, String> consumer;
 
   private Thread workerThread;
   private volatile boolean running = false;
@@ -26,7 +26,7 @@ public class ExampleConsumer implements Runnable, SmartLifecycle
   public ExampleConsumer(
     String clientId,
     String topic,
-    Consumer<String, Message> consumer)
+    Consumer<String, String> consumer)
   {
     this.id = clientId;
     this.topic = topic;
@@ -57,10 +57,10 @@ public class ExampleConsumer implements Runnable, SmartLifecycle
 
       while (true)
       {
-        ConsumerRecords<String, Message> records = consumer.poll(Duration.ofSeconds(1));
+        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(),
@@ -93,16 +93,16 @@ public class ExampleConsumer implements Runnable, SmartLifecycle
     Integer partition,
     Long offset,
     String key,
-    Message value)
+    String value)
   {
     consumed++;
     log.info("{} - partition={}-{}, offset={}: {}={}", id, topic, partition, offset, key, value);
-    switch (value.getType())
-    {
-      case ADD  -> addNumber((MessageAddNumber)value);
-      case CALC -> calcSum((MessageCalculateSum)value);
-      default   -> log.error("{} - Ignoring message of unknown typ {}", id, value.getType());
-    }
+    // switch (value.getType())
+    // {
+    //   case ADD  -> addNumber((MessageAddNumber)value);
+    //   case CALC -> calcSum((MessageCalculateSum)value);
+    //  default   -> log.error("{} - Ignoring message of unknown typ {}", id, value.getType());
+    //}
   }
 
   private void addNumber(MessageAddNumber addNumber)