org.springframework.cloud.stream.binder.kafka

Class KafkaMessageChannelBinder

java.lang.Object

org.springframework.cloud.stream.binder.AbstractBinder<org.springframework.messaging.MessageChannel,C,P>

org.springframework.cloud.stream.binder.AbstractMessageChannelBinder<ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties>,ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>,org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner>

org.springframework.cloud.stream.binder.kafka.KafkaMessageChannelBinder

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.InitializingBean, Binder<org.springframework.messaging.MessageChannel,ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties>,ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>>, ExtendedBindingProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties,org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>, ExtendedPropertiesBinder<org.springframework.messaging.MessageChannel,org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties,org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>, org.springframework.context.ApplicationContextAware

public class KafkaMessageChannelBinder
extends AbstractMessageChannelBinder<ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties>,ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>,org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner>
implements ExtendedPropertiesBinder<org.springframework.messaging.MessageChannel,org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties,org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>

A Binder that uses Kafka as the underlying middleware.

Author:

Eric Bottard, Marius Bogoevici, Ilayaperumal Gopinathan, David Turanski, Gary Russell, Mark Fisher, Soby Chacko

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.cloud.stream.binder.AbstractBinder

AbstractBinder.JavaClassMimeTypeConversion

Field Summary

Fields inherited from class org.springframework.cloud.stream.binder.AbstractMessageChannelBinder

EXPRESSION_PARSER, provisioningProvider

Fields inherited from class org.springframework.cloud.stream.binder.AbstractBinder

logger

Constructor Summary

Constructors

Constructor and Description
KafkaMessageChannelBinder(org.springframework.cloud.stream.binder.kafka.properties.KafkaBinderConfigurationProperties configurationProperties, org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner provisioningProvider)

Method Summary

Modifier and Type	Method and Description
protected org.springframework.integration.core.MessageProducer	createConsumerEndpoint(ConsumerDestination destination, String group, ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties> properties) Creates MessageProducer that receives data from the consumer destination.
protected org.springframework.messaging.MessageHandler	createProducerMessageHandler(ProducerDestination destination, ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties> producerProperties) Creates a MessageHandler with the ability to send data to the target middleware.
org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties	getExtendedConsumerProperties(String channelName)
org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties	getExtendedProducerProperties(String channelName)
void	setExtendedBindingProperties(org.springframework.cloud.stream.binder.kafka.properties.KafkaExtendedBindingProperties extendedBindingProperties)
void	setProducerListener(org.springframework.kafka.support.ProducerListener<byte[],byte[]> producerListener)

Methods inherited from class org.springframework.cloud.stream.binder.AbstractMessageChannelBinder

afterUnbindConsumer, afterUnbindProducer, doBindConsumer, doBindProducer

Methods inherited from class org.springframework.cloud.stream.binder.AbstractBinder

afterPropertiesSet, applyPrefix, bindConsumer, bindProducer, buildPartitionRoutingExpression, buildRetryTemplate, constructDLQName, deserializePayloadIfNecessary, deserializePayloadIfNecessary, getApplicationContext, getBeanFactory, groupedName, onInit, setApplicationContext, setCodec, setIntegrationEvaluationContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.cloud.stream.binder.Binder

bindConsumer, bindProducer

Constructor Detail

KafkaMessageChannelBinder

public KafkaMessageChannelBinder(org.springframework.cloud.stream.binder.kafka.properties.KafkaBinderConfigurationProperties configurationProperties,
                                 org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner provisioningProvider)

Method Detail

setExtendedBindingProperties

public void setExtendedBindingProperties(org.springframework.cloud.stream.binder.kafka.properties.KafkaExtendedBindingProperties extendedBindingProperties)

setProducerListener

public void setProducerListener(org.springframework.kafka.support.ProducerListener<byte[],byte[]> producerListener)

getExtendedConsumerProperties

public org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties getExtendedConsumerProperties(String channelName)

Specified by:

getExtendedConsumerProperties in interface ExtendedBindingProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties,org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>

getExtendedProducerProperties

public org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties getExtendedProducerProperties(String channelName)

Specified by:

getExtendedProducerProperties in interface ExtendedBindingProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties,org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>

createProducerMessageHandler

protected org.springframework.messaging.MessageHandler createProducerMessageHandler(ProducerDestination destination,
                                                                                    ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties> producerProperties)
                                                                             throws Exception

Description copied from class: AbstractMessageChannelBinder

Creates a MessageHandler with the ability to send data to the target middleware. If the returned instance is also a Lifecycle, it will be stopped automatically by the binder.

In order to be fully compliant, the MessageHandler of the binder must observe the following headers:

• BinderHeaders.PARTITION_HEADER - indicates the target partition where the message must be sent

Specified by:

createProducerMessageHandler in class AbstractMessageChannelBinder<ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties>,ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>,org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner>

Parameters:

destination - the name of the target destination

producerProperties - the producer properties

Returns:

the message handler for sending data to the target middleware

Throws:

Exception

createConsumerEndpoint

protected org.springframework.integration.core.MessageProducer createConsumerEndpoint(ConsumerDestination destination,
                                                                                      String group,
                                                                                      ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties> properties)

Description copied from class: AbstractMessageChannelBinder

Creates MessageProducer that receives data from the consumer destination. will be started and stopped by the binder.

Specified by:

createConsumerEndpoint in class AbstractMessageChannelBinder<ExtendedConsumerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaConsumerProperties>,ExtendedProducerProperties<org.springframework.cloud.stream.binder.kafka.properties.KafkaProducerProperties>,org.springframework.cloud.stream.binder.kafka.provisioning.KafkaTopicProvisioner>

Parameters:

destination - reference to the consumer destination

group - the consumer group

properties - the consumer properties

Returns:

the consumer endpoint.