Verbesserungen & Korrekturen aus simple-consumer übernommen

[demos/kafka/training] / src / main / java / de / juplo / kafka / Application.java

diff --git a/src/main/java/de/juplo/kafka/Application.java b/src/main/java/de/juplo/kafka/Application.java
index 5226d6b..e3219c1 100644 (file)
--- a/src/main/java/de/juplo/kafka/Application.java
+++ b/src/main/java/de/juplo/kafka/Application.java
@@ -1,57 +1,24 @@
 package de.juplo.kafka;
 
-import org.apache.kafka.clients.consumer.KafkaConsumer;
-import org.apache.kafka.common.serialization.LongDeserializer;
-import org.apache.kafka.common.serialization.StringDeserializer;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
-import org.springframework.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-
-import java.util.Properties;
-import java.util.concurrent.Executors;
-
+import org.springframework.kafka.annotation.KafkaListener;
 
+// tag::supersimple[]
 @SpringBootApplication
-@EnableConfigurationProperties(ApplicationProperties.class)
+@Slf4j
 public class Application
 {
-  @Bean
-  public EndlessConsumer endlessConsumer(
-      KafkaConsumer<String, String> kafkaConsumer,
-      ApplicationProperties properties)
-  {
-    EndlessConsumer consumer =
-        new EndlessConsumer(
-            Executors.newFixedThreadPool(1),
-            properties.getClientId(),
-            properties.getTopic(),
-            kafkaConsumer);
-
-    consumer.start();
-
-    return consumer;
-  }
-
-  @Bean(destroyMethod = "close")
-  public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
+  @KafkaListener(id = "supersimple", topics = "test")
+  public void recieve(String message)
   {
-    Properties props = new Properties();
-
-    props.put("bootstrap.servers", properties.getBootstrapServer());
-    props.put("group.id", properties.getGroupId());
-    props.put("client.id", properties.getClientId());
-    props.put("auto.offset.reset", properties.getAutoOffsetReset());
-    props.put("metadata.max.age.ms", "1000");
-    props.put("key.deserializer", StringDeserializer.class.getName());
-    props.put("value.deserializer", LongDeserializer.class.getName());
-
-    return new KafkaConsumer<>(props);
+    log.info("Recieved message: {}", message);
   }
 
-
   public static void main(String[] args)
   {
     SpringApplication.run(Application.class, args);
   }
 }
+// end::supersimple[]