org.springframework.amqp.remoting.service

Class AmqpInvokerServiceExporter

java.lang.Object

org.springframework.remoting.support.RemotingSupport

org.springframework.remoting.support.RemoteExporter

org.springframework.remoting.support.RemoteInvocationBasedExporter

org.springframework.amqp.remoting.service.AmqpInvokerServiceExporter

All Implemented Interfaces:

MessageListener, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanClassLoaderAware

public class AmqpInvokerServiceExporter
extends org.springframework.remoting.support.RemoteInvocationBasedExporter
implements MessageListener

This message listener exposes a plain java service via AMQP. Such services can be accessed via plain AMQP or via AmqpProxyFactoryBean. To configure this message listener so that it actually receives method calls via AMQP, it needs to be put into a listener container. See MessageListener.

When receiving a message, a service method is called according to the contained RemoteInvocation. The result of that invocation is returned as a RemoteInvocationResult contained in a message that is sent according to the ReplyToAddress of the received message.

Please note that this exporter does not use the MessageConverter of the injected AmqpTemplate to convert incoming calls and their results. Instead you have to directly inject the MessageConverter into this class.

This listener responds to "Request/Reply"-style messages as described here.

Since:

1.2

Author:

David Bilge, Gary Russell, Artem Bilan

Field Summary

Fields inherited from class org.springframework.remoting.support.RemotingSupport

logger

Constructor Summary

Constructors

Constructor and Description
AmqpInvokerServiceExporter()

Method Summary

Modifier and Type	Method and Description
AmqpTemplate	getAmqpTemplate()
MessageConverter	getMessageConverter()
void	onMessage(Message message)
void	setAmqpTemplate(AmqpTemplate amqpTemplate) The AMQP template to use for sending the return value.
void	setMessageConverter(MessageConverter messageConverter) Set the message converter for this remote service.

Methods inherited from class org.springframework.remoting.support.RemoteInvocationBasedExporter

getRemoteInvocationExecutor, invoke, invokeAndCreateResult, setRemoteInvocationExecutor

Methods inherited from class org.springframework.remoting.support.RemoteExporter

checkService, checkServiceInterface, getExporterName, getProxyForService, getService, getServiceInterface, setInterceptors, setRegisterTraceInterceptor, setService, setServiceInterface

Methods inherited from class org.springframework.remoting.support.RemotingSupport

getBeanClassLoader, overrideThreadContextClassLoader, resetThreadContextClassLoader, setBeanClassLoader

Methods inherited from class java.lang.Object

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

Constructor Detail

AmqpInvokerServiceExporter

public AmqpInvokerServiceExporter()

Method Detail

onMessage

public void onMessage(Message message)

Specified by:

onMessage in interface MessageListener

getAmqpTemplate

public AmqpTemplate getAmqpTemplate()

setAmqpTemplate

public void setAmqpTemplate(AmqpTemplate amqpTemplate)

The AMQP template to use for sending the return value.

Note that the exchange and routing key parameters on this template are ignored for these return messages. Instead of those the respective parameters from the original message's returnAddress are being used.

Also, the template's MessageConverter is not used for the reply.

Parameters:

amqpTemplate - The amqp template.

See Also:

setMessageConverter(MessageConverter)

getMessageConverter

public MessageConverter getMessageConverter()

setMessageConverter

public void setMessageConverter(MessageConverter messageConverter)

Set the message converter for this remote service. Used to deserialize remote method calls and to serialize their return values.

The default converter is a SimpleMessageConverter, which is able to handle byte arrays, Strings, and Serializable Objects depending on the message content type header.

Note that this class never uses the message converter of the underlying AmqpTemplate!

Parameters:

messageConverter - The message converter.

See Also:

SimpleMessageConverter