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 = "out")
+ 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[]
\ No newline at end of file