package de.juplo.kafka;
-import org.apache.kafka.clients.consumer.Consumer;
+import org.apache.kafka.common.serialization.ByteArraySerializer;
+import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.boot.autoconfigure.kafka.KafkaProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
+import java.util.Map;
import java.util.Optional;
-import org.springframework.kafka.core.ConsumerFactory;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
+import org.springframework.kafka.config.KafkaListenerEndpointRegistry;
+import org.springframework.kafka.core.DefaultKafkaProducerFactory;
+import org.springframework.kafka.core.KafkaOperations;
+import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.core.ProducerFactory;
+import org.springframework.kafka.listener.DeadLetterPublishingRecoverer;
+import org.springframework.kafka.listener.DefaultErrorHandler;
+import org.springframework.kafka.support.serializer.DelegatingByTypeSerializer;
+import org.springframework.kafka.support.serializer.JsonSerializer;
+import org.springframework.util.backoff.FixedBackOff;
@Configuration
public class ApplicationConfiguration
{
@Bean
- public ApplicationRecordHandler recordHandler(
+ public ApplicationRecordHandler applicationRecordHandler(
AdderResults adderResults,
KafkaProperties kafkaProperties,
ApplicationProperties applicationProperties)
ApplicationRecordHandler recordHandler,
AdderResults adderResults,
StateRepository stateRepository,
- KafkaProperties kafkaProperties,
- ApplicationProperties applicationProperties)
+ KafkaProperties kafkaProperties)
{
return new ApplicationRebalanceListener(
recordHandler,
}
@Bean
- public EndlessConsumer<String, Message> endlessConsumer(
- Consumer<String, Message> kafkaConsumer,
- ExecutorService executor,
- ApplicationRebalanceListener rebalanceListener,
- ApplicationRecordHandler recordHandler,
+ public EndlessConsumer endlessConsumer(
+ RecordHandler recordHandler,
KafkaProperties kafkaProperties,
- ApplicationProperties applicationProperties)
+ KafkaListenerEndpointRegistry endpointRegistry)
{
return
- new EndlessConsumer<>(
- executor,
+ new EndlessConsumer(
kafkaProperties.getClientId(),
- applicationProperties.getTopic(),
- kafkaConsumer,
- rebalanceListener,
+ endpointRegistry,
recordHandler);
}
@Bean
- public ExecutorService executor()
+ public ProducerFactory<String, Object> producerFactory(
+ KafkaProperties properties)
{
- return Executors.newSingleThreadExecutor();
+ return new DefaultKafkaProducerFactory<>(
+ properties.getProducer().buildProperties(),
+ new StringSerializer(),
+ new DelegatingByTypeSerializer(
+ Map.of(
+ byte[].class, new ByteArraySerializer(),
+ MessageAddNumber.class, new JsonSerializer<>(),
+ MessageCalculateSum.class, new JsonSerializer<>())));
}
- @Bean(destroyMethod = "close")
- public Consumer<String, Message> kafkaConsumer(ConsumerFactory<String, Message> factory)
+ @Bean
+ public KafkaTemplate<String, Object> kafkaTemplate(
+ ProducerFactory<String, Object> producerFactory)
+ {
+ return new KafkaTemplate<>(producerFactory);
+ }
+
+ @Bean
+ public DeadLetterPublishingRecoverer deadLetterPublishingRecoverer(
+ KafkaOperations<?, ?> kafkaTemplate)
+ {
+ return new DeadLetterPublishingRecoverer(kafkaTemplate);
+ }
+
+ @Bean
+ public DefaultErrorHandler errorHandler(
+ DeadLetterPublishingRecoverer recoverer)
{
- return factory.createConsumer();
+ return new DefaultErrorHandler(
+ recoverer,
+ new FixedBackOff(0l, 0l));
}
}