package de.juplo.kafka;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.consumer.KafkaConsumer;
import org.apache.kafka.common.serialization.LongDeserializer;
import org.apache.kafka.common.serialization.StringDeserializer;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
+import org.springframework.kafka.support.serializer.JsonDeserializer;
import java.util.Properties;
+import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
+import java.util.function.Consumer;
@Configuration
public class ApplicationConfiguration
{
@Bean
- public EndlessConsumer endlessConsumer(
- KafkaConsumer<String, String> kafkaConsumer,
+ public Consumer<ConsumerRecord<String, ClientMessage>> consumer()
+ {
+ return (record) ->
+ {
+ // Handle record
+ };
+ }
+
+ @Bean
+ public EndlessConsumer<String, ClientMessage> endlessConsumer(
+ KafkaConsumer<String, ClientMessage> kafkaConsumer,
+ ExecutorService executor,
+ Consumer<ConsumerRecord<String, ClientMessage>> handler,
ApplicationProperties properties)
{
- EndlessConsumer consumer =
- new EndlessConsumer(
- Executors.newFixedThreadPool(1),
+ return
+ new EndlessConsumer<>(
+ executor,
properties.getClientId(),
properties.getTopic(),
- kafkaConsumer);
-
- consumer.start();
+ kafkaConsumer,
+ handler);
+ }
- return consumer;
+ @Bean
+ public ExecutorService executor()
+ {
+ return Executors.newSingleThreadExecutor();
}
@Bean(destroyMethod = "close")
- public KafkaConsumer<String, String> kafkaConsumer(ApplicationProperties properties)
+ public KafkaConsumer<String, ClientMessage> kafkaConsumer(ApplicationProperties properties)
{
Properties props = new Properties();
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());
+ props.put("value.deserializer", JsonDeserializer.class.getName());
+ props.put(JsonDeserializer.TYPE_MAPPINGS, "message:" + ClientMessage.class.getName());
+ props.put(JsonDeserializer.TRUSTED_PACKAGES, "de.juplo.kafka");
return new KafkaConsumer<>(props);
}