org.mule.processor
Class SedaStageInterceptingMessageProcessor

java.lang.Object
  org.mule.processor.AbstractInterceptingMessageProcessor
      org.mule.processor.AsyncInterceptingMessageProcessor
          org.mule.processor.SedaStageInterceptingMessageProcessor

All Implemented Interfaces:

Runnable, EventListener, javax.resource.spi.work.Work, javax.resource.spi.work.WorkListener, Disposable, Initialisable, Lifecycle, Startable, Stoppable, InterceptingMessageProcessor, MessageProcessor, MessageSource

public class SedaStageInterceptingMessageProcessor
extends AsyncInterceptingMessageProcessor
implements javax.resource.spi.work.WorkListener, javax.resource.spi.work.Work, Lifecycle

Processes MuleEvent's asynchronously using a MuleWorkManager to schedule asynchronous processing of the next MessageProcessor. The next MessageProcessor will therefore be executed in a different thread unless the event is synchronous in which case the next MessageProcessor is invoked directly in the same thread.

Field Summary

protected LifecycleState	lifecycleState
protected MuleContext	muleContext
protected String	name
protected Queue	queue
protected static String	QUEUE_NAME_PREFIX
protected QueueProfile	queueProfile
protected QueueStatistics	queueStatistics
protected int	queueTimeout

Fields inherited from class org.mule.processor.AsyncInterceptingMessageProcessor

doThreading, workManager, workManagerSource

Fields inherited from class org.mule.processor.AbstractInterceptingMessageProcessor

logger, next

Fields inherited from interface org.mule.api.lifecycle.Initialisable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Startable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Stoppable

PHASE_NAME

Fields inherited from interface org.mule.api.lifecycle.Disposable

PHASE_NAME

Constructor Summary

SedaStageInterceptingMessageProcessor(String name, QueueProfile queueProfile, int queueTimeout, WorkManagerSource workManagerSource, boolean doThreading, LifecycleState lifecycleState, QueueStatistics queueStatistics, MuleContext muleContext)

Method Summary

protected MuleEvent	dequeue()
void	dispose() A lifecycle method where implementor should free up any resources.
protected void	enqueue(MuleEvent event)
protected String	getQueueName()
int	getQueueSize()
protected String	getStageDescription()
protected String	getStageName()
void	initialise() Method used to perform any initialisation work.
protected boolean	isQueuePersistent() Are the events in the SEDA queue persistent?
protected boolean	isStatsEnabled()
MuleEvent	process(MuleEvent event) Invokes the MessageProcessor.
protected void	processAsync(MuleEvent event)
void	release()
void	run() While the service isn't stopped this runs a continuous loop checking for new events in the queue.
void	start()
void	stop()
protected void	waitIfPaused()

Methods inherited from class org.mule.processor.AsyncInterceptingMessageProcessor

handleWorkException, workAccepted, workCompleted, workRejected, workStarted

Methods inherited from class org.mule.processor.AbstractInterceptingMessageProcessor

processNext, setListener, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.resource.spi.work.WorkListener

workAccepted, workCompleted, workRejected, workStarted

Field Detail

QUEUE_NAME_PREFIX

protected static final String QUEUE_NAME_PREFIX

See Also:

Constant Field Values

queueProfile

protected QueueProfile queueProfile

queueTimeout

protected int queueTimeout

lifecycleState

protected LifecycleState lifecycleState

queueStatistics

protected QueueStatistics queueStatistics

muleContext

protected MuleContext muleContext

name

protected String name

queue

protected Queue queue

Constructor Detail

SedaStageInterceptingMessageProcessor

public SedaStageInterceptingMessageProcessor(String name,
                                             QueueProfile queueProfile,
                                             int queueTimeout,
                                             WorkManagerSource workManagerSource,
                                             boolean doThreading,
                                             LifecycleState lifecycleState,
                                             QueueStatistics queueStatistics,
                                             MuleContext muleContext)

Method Detail

process

public MuleEvent process(MuleEvent event)
                  throws MuleException

Description copied from interface: MessageProcessor

Invokes the MessageProcessor.

Specified by:

process in interface MessageProcessor

Overrides:

process in class AsyncInterceptingMessageProcessor

Parameters:

event - MuleEvent to be processed

Returns:

optional response MuleEvent

Throws:

MuleException

processAsync

protected void processAsync(MuleEvent event)
                     throws MuleException

Overrides:

processAsync in class AsyncInterceptingMessageProcessor

Throws:

MuleException

isStatsEnabled

protected boolean isStatsEnabled()

enqueue

protected void enqueue(MuleEvent event)
                throws Exception

Throws:

Exception

dequeue

protected MuleEvent dequeue()
                     throws Exception

Throws:

Exception

run

public void run()

While the service isn't stopped this runs a continuous loop checking for new events in the queue.

Specified by:

run in interface Runnable

isQueuePersistent

protected boolean isQueuePersistent()

Are the events in the SEDA queue persistent?

getQueueSize

public int getQueueSize()

getQueueName

protected String getQueueName()

getStageName

protected String getStageName()

getStageDescription

protected String getStageDescription()

waitIfPaused

protected void waitIfPaused()
                     throws InterruptedException

Throws:

InterruptedException

release

public void release()

Specified by:

release in interface javax.resource.spi.work.Work

initialise

public void initialise()
                throws InitialisationException

Description copied from interface: Initialisable

Method used to perform any initialisation work. If a fatal error occurs during initialisation an InitialisationException should be thrown, causing the Mule instance to shutdown. If the error is recoverable, say by retrying to connect, a RecoverableException should be thrown. There is no guarantee that by throwing a Recoverable exception that the Mule instance will not shut down.

Specified by:

initialise in interface Initialisable

Throws:

InitialisationException - if a fatal error occurs causing the Mule instance to shutdown

RecoverableException - if an error occurs that can be recovered from

start

public void start()
           throws MuleException

Specified by:

start in interface Startable

Overrides:

start in class AsyncInterceptingMessageProcessor

Throws:

MuleException

stop

public void stop()
          throws MuleException

Specified by:

stop in interface Stoppable

Overrides:

stop in class AsyncInterceptingMessageProcessor

Throws:

MuleException

dispose

public void dispose()

Description copied from interface: Disposable

A lifecycle method where implementor should free up any resources. If an exception is thrown it should just be logged and processing should continue. This method should not throw Runtime exceptions.

Specified by:

dispose in interface Disposable