org.apache.camel.component.rabbitmq.reply

Class ReplyManagerSupport

java.lang.Object

org.apache.camel.support.ServiceSupport

org.apache.camel.component.rabbitmq.reply.ReplyManagerSupport

All Implemented Interfaces:

ReplyManager, org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.StatefulService, org.apache.camel.SuspendableService

Direct Known Subclasses:

TemporaryQueueReplyManager

public abstract class ReplyManagerSupport
extends org.apache.camel.support.ServiceSupport
implements ReplyManager

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.camel.CamelContext	camelContext
protected CorrelationTimeoutMap	correlation
protected RabbitMQEndpoint	endpoint
protected ScheduledExecutorService	executorService
protected com.rabbitmq.client.Connection	listenerContainer
protected org.slf4j.Logger	log
protected String	replyTo
protected CountDownLatch	replyToLatch
protected long	replyToTimeout

Fields inherited from class org.apache.camel.support.ServiceSupport

shutdown, shuttingdown, started, starting, stopped, stopping, suspended, suspending

Constructor Summary

Constructors

Constructor and Description
ReplyManagerSupport(org.apache.camel.CamelContext camelContext)

Method Summary

Modifier and Type	Method and Description
void	cancelCorrelationId(String correlationId) Unregister a correlationId when you no longer need a reply
protected abstract com.rabbitmq.client.Connection	createListenerContainer()
protected abstract ReplyHandler	createReplyHandler(ReplyManager replyManager, org.apache.camel.Exchange exchange, org.apache.camel.AsyncCallback callback, String originalCorrelationId, String correlationId, long requestTimeout)
protected void	doStart()
protected void	doStop()
String	getReplyTo() Gets the reply to queue being used
protected abstract void	handleReplyMessage(String correlationID, com.rabbitmq.client.AMQP.BasicProperties properties, byte[] message)
void	onMessage(com.rabbitmq.client.AMQP.BasicProperties properties, byte[] message)
void	processReply(ReplyHolder holder) Process the reply
String	registerReply(ReplyManager replyManager, org.apache.camel.Exchange exchange, org.apache.camel.AsyncCallback callback, String originalCorrelationId, String correlationId, long requestTimeout) Register a reply
void	setEndpoint(RabbitMQEndpoint endpoint) Sets the belonging RabbitMQEndpoint
void	setReplyTo(String replyTo) Sets the reply to queue the manager should listen for replies.
void	setScheduledExecutorService(ScheduledExecutorService executorService) Sets the scheduled to use when checking for timeouts (no reply received within a given time period)
protected ReplyHandler	waitForProvisionCorrelationToBeUpdated(String correlationID, byte[] message) IMPORTANT: This logic is only being used due to high performance in-memory only testing using InOut over JMS.

Methods inherited from class org.apache.camel.support.ServiceSupport

doResume, doShutdown, doSuspend, getStatus, getVersion, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.component.rabbitmq.reply.ReplyManager

updateCorrelationId

Field Detail

log

protected final org.slf4j.Logger log

camelContext

protected final org.apache.camel.CamelContext camelContext

replyToLatch

protected final CountDownLatch replyToLatch

replyToTimeout

protected final long replyToTimeout

See Also:

Constant Field Values

executorService

protected ScheduledExecutorService executorService

endpoint

protected RabbitMQEndpoint endpoint

replyTo

protected String replyTo

listenerContainer

protected com.rabbitmq.client.Connection listenerContainer

correlation

protected CorrelationTimeoutMap correlation

Constructor Detail

ReplyManagerSupport

public ReplyManagerSupport(org.apache.camel.CamelContext camelContext)

Method Detail

setScheduledExecutorService

public void setScheduledExecutorService(ScheduledExecutorService executorService)

Description copied from interface: ReplyManager

Sets the scheduled to use when checking for timeouts (no reply received within a given time period)

Specified by:

setScheduledExecutorService in interface ReplyManager

setEndpoint

public void setEndpoint(RabbitMQEndpoint endpoint)

Description copied from interface: ReplyManager

Sets the belonging RabbitMQEndpoint

Specified by:

setEndpoint in interface ReplyManager

setReplyTo

public void setReplyTo(String replyTo)

Description copied from interface: ReplyManager

Sets the reply to queue the manager should listen for replies.

The queue is either a temporary or a persistent queue.

Specified by:

setReplyTo in interface ReplyManager

getReplyTo

public String getReplyTo()

Description copied from interface: ReplyManager

Gets the reply to queue being used

Specified by:

getReplyTo in interface ReplyManager

registerReply

public String registerReply(ReplyManager replyManager,
                            org.apache.camel.Exchange exchange,
                            org.apache.camel.AsyncCallback callback,
                            String originalCorrelationId,
                            String correlationId,
                            long requestTimeout)

Description copied from interface: ReplyManager

Register a reply

Specified by:

registerReply in interface ReplyManager

Parameters:

replyManager - the reply manager being used

exchange - the exchange

callback - the callback

originalCorrelationId - an optional original correlation id

correlationId - the correlation id to expect being used

requestTimeout - the timeout

Returns:

the correlation id used

createReplyHandler

protected abstract ReplyHandler createReplyHandler(ReplyManager replyManager,
                                                   org.apache.camel.Exchange exchange,
                                                   org.apache.camel.AsyncCallback callback,
                                                   String originalCorrelationId,
                                                   String correlationId,
                                                   long requestTimeout)

cancelCorrelationId

public void cancelCorrelationId(String correlationId)

Description copied from interface: ReplyManager

Unregister a correlationId when you no longer need a reply

Specified by:

cancelCorrelationId in interface ReplyManager

onMessage

public void onMessage(com.rabbitmq.client.AMQP.BasicProperties properties,
                      byte[] message)

processReply

public void processReply(ReplyHolder holder)

Description copied from interface: ReplyManager

Process the reply

Specified by:

processReply in interface ReplyManager

Parameters:

holder - containing needed data to process the reply and continue routing

handleReplyMessage

protected abstract void handleReplyMessage(String correlationID,
                                           com.rabbitmq.client.AMQP.BasicProperties properties,
                                           byte[] message)

createListenerContainer

protected abstract com.rabbitmq.client.Connection createListenerContainer()
                                                                   throws Exception

Throws:

Exception

waitForProvisionCorrelationToBeUpdated

protected ReplyHandler waitForProvisionCorrelationToBeUpdated(String correlationID,
                                                              byte[] message)

IMPORTANT: This logic is only being used due to high performance in-memory only testing using InOut over JMS. Its unlikely to happen in a real life situation with communication to a remote broker, which always will be slower to send back reply, before Camel had a chance to update it's internal correlation map.

doStart

protected void doStart()
                throws Exception

Specified by:

doStart in class org.apache.camel.support.ServiceSupport

Throws:

Exception

doStop

protected void doStop()
               throws Exception

Specified by:

doStop in class org.apache.camel.support.ServiceSupport

Throws:

Exception