org.hornetq.core.server.cluster.impl

Class Redistributor

java.lang.Object

org.hornetq.core.server.cluster.impl.Redistributor

All Implemented Interfaces:

Consumer

public class Redistributor
extends Object
implements Consumer

A Redistributor

Author:

Tim Fox Created 8 Feb 2009 14:23:41

Constructor Summary

Constructors

Constructor and Description
Redistributor(Queue queue, StorageManager storageManager, PostOffice postOffice, Executor executor, int batchSize)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
String	debug()
void	getDeliveringMessages(List<MessageReference> refList) Add the in-deliver mode messages to the ref-list passed as parameter
Filter	getFilter()
HandleStatus	handle(MessageReference reference) There was a change on semantic during 2.3 here. We now first accept the message, and the actual deliver is done as part of Consumer.proceedDeliver(MessageReference).
void	proceedDeliver(MessageReference ref) This will proceed with the actual delivery.
void	start()
void	stop()
String	toManagementString() This method will create a string representation meant for management operations.

Methods inherited from class java.lang.Object

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

Constructor Detail

Redistributor

public Redistributor(Queue queue,
             StorageManager storageManager,
             PostOffice postOffice,
             Executor executor,
             int batchSize)

Method Detail

getFilter

public Filter getFilter()

Specified by:

getFilter in interface Consumer

debug

public String debug()

Specified by:

debug in interface Consumer

toManagementString

public String toManagementString()

Description copied from interface: Consumer

This method will create a string representation meant for management operations. This is different from the toString method that's meant for debugging and will contain information that regular users won't understand well

Specified by:

toManagementString in interface Consumer

Returns:

start

public void start()

stop

public void stop()
          throws Exception

Throws:

Exception

getDeliveringMessages

public void getDeliveringMessages(List<MessageReference> refList)

Description copied from interface: Consumer

Add the in-deliver mode messages to the ref-list passed as parameter

Specified by:

getDeliveringMessages in interface Consumer

Parameters:

refList - the placeholder for where the output messages will be placed

close

public void close()

handle

public HandleStatus handle(MessageReference reference)
                    throws Exception

Description copied from interface: Consumer

There was a change on semantic during 2.3 here.
We now first accept the message, and the actual deliver is done as part of Consumer.proceedDeliver(MessageReference). This is to avoid holding a lock on the queues while the delivery is being accomplished To avoid a lock on the queue in case of misbehaving consumers.

This should return busy if handle is called before proceed deliver is called

Specified by:

handle in interface Consumer

Returns:

Throws:

Exception

proceedDeliver

public void proceedDeliver(MessageReference ref)

Description copied from interface: Consumer

This will proceed with the actual delivery. Notice that handle should hold a readLock and proceedDelivery should release the readLock any lock operation on Consumer should also get a writeLock on the readWriteLock to guarantee there are no pending deliveries

Specified by:

proceedDeliver in interface Consumer