Class RecordMessagingMessageListenerAdapter<K,V>

java.lang.Object

org.springframework.kafka.listener.adapter.MessagingMessageListenerAdapter<K,V>

org.springframework.kafka.listener.adapter.RecordMessagingMessageListenerAdapter<K,V>

Type Parameters:

K - the key type.

V - the value type.

All Implemented Interfaces:

AcknowledgingConsumerAwareMessageListener<K,V>, AsyncRepliesAware, ConsumerSeekAware, GenericMessageListener<org.apache.kafka.clients.consumer.ConsumerRecord<K,V>>, MessageListener<K,V>

public class RecordMessagingMessageListenerAdapter<K,V>
extends MessagingMessageListenerAdapter<K,V>
implements AcknowledgingConsumerAwareMessageListener<K,V>

A MessageListener adapter that invokes a configurable HandlerAdapter; used when the factory is configured for the listener to receive individual messages.

Wraps the incoming Kafka Message to Spring's Message abstraction.

The original ConsumerRecord and the Acknowledgment are provided as additional arguments so that these can be injected as method arguments if necessary.

Nested Class Summary

Nested classes/interfaces inherited from class MessagingMessageListenerAdapter

MessagingMessageListenerAdapter.ReplyExpressionRoot

Nested classes/interfaces inherited from interface ConsumerSeekAware

ConsumerSeekAware.ConsumerSeekCallback

Field Summary

Fields inherited from class MessagingMessageListenerAdapter

logger, NULL_MESSAGE

Constructor Summary

Constructors

Constructor	Description
RecordMessagingMessageListenerAdapter(@Nullable Object bean, @Nullable Method method)
RecordMessagingMessageListenerAdapter(@Nullable Object bean, @Nullable Method method, @Nullable KafkaListenerErrorHandler errorHandler)

Method Summary

Modifier and Type	Method	Description
void	onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> record, @Nullable Acknowledgment acknowledgment, @Nullable org.apache.kafka.clients.consumer.Consumer<?,?> consumer)	Kafka AcknowledgingConsumerAwareMessageListener entry point.

Methods inherited from class MessagingMessageListenerAdapter

acknowledge, asyncFailure, asyncSuccess, createMessagingErrorMessage, determineInferredType, getMessageConverter, getReplyHeadersConfigurer, getType, handleException, handleResult, invoke, invokeHandler, isAsyncReplies, isConsumerRecordList, isConsumerRecords, isConversionNeeded, isMessageList, isSplitIterables, onIdleContainer, onPartitionsAssigned, onPartitionsRevoked, registerSeekCallback, sendResponse, setBeanResolver, setCallbackForAsyncFailure, setCorrelationHeaderName, setFallbackType, setHandlerMethod, setMessageConverter, setMessagingConverter, setObservationRegistry, setReplyHeadersConfigurer, setReplyTemplate, setReplyTopic, setSplitIterables, toMessagingMessage

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface AcknowledgingConsumerAwareMessageListener

onMessage

Methods inherited from interface ConsumerSeekAware

onFirstPoll, unregisterSeekCallback

Methods inherited from interface GenericMessageListener

onMessage, onMessage

Constructor Details

RecordMessagingMessageListenerAdapter

public RecordMessagingMessageListenerAdapter(@Nullable Object bean,
 @Nullable Method method)

RecordMessagingMessageListenerAdapter

public RecordMessagingMessageListenerAdapter(@Nullable Object bean,
 @Nullable Method method,
 @Nullable KafkaListenerErrorHandler errorHandler)

Method Details

onMessage

public void onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> record,
 @Nullable Acknowledgment acknowledgment,
 @Nullable org.apache.kafka.clients.consumer.Consumer<?,?> consumer)

Kafka AcknowledgingConsumerAwareMessageListener entry point.

Delegate the message to the target listener method, with appropriate conversion of the message argument.

Specified by:

onMessage in interface AcknowledgingConsumerAwareMessageListener<K,V>

Specified by:

onMessage in interface GenericMessageListener<K>

Parameters:

record - the incoming Kafka ConsumerRecord.

acknowledgment - the acknowledgment.

consumer - the consumer.