Package org.springframework.integration.handler

Class ReactiveMessageHandlerAdapter

java.lang.Object

org.springframework.integration.handler.ReactiveMessageHandlerAdapter

All Implemented Interfaces:

MessageHandler

public class ReactiveMessageHandlerAdapter
extends Object
implements MessageHandler

A MessageHandler implementation to adapt a ReactiveMessageHandler for synchronous invocations. A subscription to the returned reactive type from ReactiveMessageHandler.handleMessage(Message) call is done directly in the handleMessage(org.springframework.messaging.Message<?>) implementation.

The framework wraps a target ReactiveMessageHandler into this instance automatically for XML and Annotation configuration. For Java DSL it is recommended to wrap for generic usage (.handle(MessageHandle)) or it has to be done in the MessageHandlerSpec implementation for protocol-specif ReactiveMessageHandler.

The framework unwraps a delegate ReactiveMessageHandler whenever it can compose reactive streams, e.g. ReactiveStreamsConsumer.

Since:

5.3

Author:

Artem Bilan

See Also:

• ReactiveStreamsConsumer

Constructor Summary

Constructors

Constructor	Description
ReactiveMessageHandlerAdapter(ReactiveMessageHandler reactiveMessageHandler)	Instantiate based on the provided ReactiveMessageHandler.

Method Summary

Modifier and Type	Method	Description
ReactiveMessageHandler	getDelegate()	Get access to the delegate ReactiveMessageHandler.
void	handleMessage(Message<?> message)

Methods inherited from class java.lang.Object

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

Constructor Details

ReactiveMessageHandlerAdapter

public ReactiveMessageHandlerAdapter(ReactiveMessageHandler reactiveMessageHandler)

Instantiate based on the provided ReactiveMessageHandler.

Parameters:

reactiveMessageHandler - the ReactiveMessageHandler to delegate to.

Method Details

getDelegate

public ReactiveMessageHandler getDelegate()

Get access to the delegate ReactiveMessageHandler. Typically used in the framework internally in components which can compose reactive streams internally and allow us to avoid an explicit subscribe() call.

Returns:

the ReactiveMessageHandler this instance is delegating to.

handleMessage

public void handleMessage(Message<?> message)
                   throws MessagingException

Specified by:

handleMessage in interface MessageHandler

Throws:

MessagingException