org.apache.servicemix.jbi.nmr.flow.seda
Class SedaFlow

java.lang.Object
  org.apache.servicemix.jbi.management.BaseLifeCycle
      org.apache.servicemix.jbi.nmr.flow.AbstractFlow
          org.apache.servicemix.jbi.nmr.flow.seda.SedaFlow

All Implemented Interfaces:

javax.jbi.management.LifeCycleMBean, MBeanInfoProvider, Flow

public class SedaFlow
extends AbstractFlow

The SedaFlow introduces a simple event staging between the internal processes in the NMR Broker. A Seda flow (the default) is suited for general deployment, as the additional staging is well suited buffering exchanges between heavily routed to components (where state may be being used) for example.

Version:

$Revision: 665811 $

Field Summary

protected ComponentListener	listener
protected Map<ComponentNameSpace,SedaQueue>	queueMap
protected AtomicBoolean	started

Fields inherited from class org.apache.servicemix.jbi.nmr.flow.AbstractFlow

broker, executorFactory, log

Fields inherited from class org.apache.servicemix.jbi.management.BaseLifeCycle

currentState, INITIALIZED

Fields inherited from interface javax.jbi.management.LifeCycleMBean

SHUTDOWN, STARTED, STOPPED, UNKNOWN

Constructor Summary

SedaFlow()

Method Summary

boolean	canHandle(javax.jbi.messaging.MessageExchange me) Check if the flow can support the requested QoS for this exchange
protected SedaQueue	createQueue(ComponentNameSpace cns)
protected void	doRouting(MessageExchangeImpl me) Distribute an ExchangePacket
protected void	doSend(MessageExchangeImpl me) Distribute an ExchangePacket
protected void	enqueuePacket(MessageExchangeImpl me) Put the packet in the queue for later processing.
MBeanAttributeInfo[]	getAttributeInfos() Get an array of MBeanAttributeInfo
String	getDescription() The type of Flow
int	getQueueNumber() Get Queue number
void	init(Broker broker) Initialize the Region
void	onComponentShutdown(ComponentNameSpace cns) Process state changes in Components
protected void	registerQueue(ComponentNameSpace cns, SedaQueue queue)
void	release(SedaQueue queue) release a queue
protected void	resumeTx(MessageExchangeImpl me)
void	shutDown() shutDown the flow
void	start() start the flow
void	stop() stop the flow
protected void	suspendTx(MessageExchangeImpl me)
protected void	unregisterQueue(SedaQueue queue)

Methods inherited from class org.apache.servicemix.jbi.nmr.flow.AbstractFlow

getBroker, getExecutorFactory, getName, getType, isClustered, isPersistent, isSynchronous, isTransacted, resume, send, setName, suspend

Methods inherited from class org.apache.servicemix.jbi.management.BaseLifeCycle

firePropertyChanged, getCurrentState, getObjectToManage, getOperationInfos, getSubType, init, isInitialized, isShutDown, isStarted, isStopped, isUnknown, setCurrentState, setPropertyChangeListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface javax.jbi.management.LifeCycleMBean

getCurrentState

Field Detail

queueMap

protected Map<ComponentNameSpace,SedaQueue> queueMap

started

protected AtomicBoolean started

listener

protected ComponentListener listener

Constructor Detail

SedaFlow

public SedaFlow()

Method Detail

getDescription

public String getDescription()

The type of Flow

Returns:

the type

init

public void init(Broker broker)
          throws javax.jbi.JBIException

Initialize the Region

Specified by:

init in interface Flow

Overrides:

init in class AbstractFlow

Parameters:

broker -

Throws:

javax.jbi.JBIException

canHandle

public boolean canHandle(javax.jbi.messaging.MessageExchange me)

Check if the flow can support the requested QoS for this exchange

Parameters:

me - the exchange to check

Returns:

true if this flow can handle the given exchange

start

public void start()
           throws javax.jbi.JBIException

start the flow

Specified by:

start in interface javax.jbi.management.LifeCycleMBean

Overrides:

start in class AbstractFlow

Throws:

javax.jbi.JBIException

stop

public void stop()
          throws javax.jbi.JBIException

stop the flow

Specified by:

stop in interface javax.jbi.management.LifeCycleMBean

Overrides:

stop in class AbstractFlow

Throws:

javax.jbi.JBIException

shutDown

public void shutDown()
              throws javax.jbi.JBIException

shutDown the flow

Specified by:

shutDown in interface javax.jbi.management.LifeCycleMBean

Overrides:

shutDown in class AbstractFlow

Throws:

javax.jbi.JBIException

doSend

protected void doSend(MessageExchangeImpl me)
               throws javax.jbi.JBIException

Distribute an ExchangePacket

Specified by:

doSend in class AbstractFlow

Parameters:

packet -

Throws:

javax.jbi.JBIException

doRouting

protected void doRouting(MessageExchangeImpl me)
                  throws javax.jbi.messaging.MessagingException

Description copied from class: AbstractFlow

Distribute an ExchangePacket

Overrides:

doRouting in class AbstractFlow

Throws:

javax.jbi.messaging.MessagingException

enqueuePacket

protected void enqueuePacket(MessageExchangeImpl me)
                      throws javax.jbi.JBIException

Put the packet in the queue for later processing.

Parameters:

packet -

Throws:

javax.jbi.JBIException

createQueue

protected SedaQueue createQueue(ComponentNameSpace cns)
                         throws javax.jbi.JBIException

Throws:

javax.jbi.JBIException

onComponentShutdown

public void onComponentShutdown(ComponentNameSpace cns)

Process state changes in Components

Parameters:

event -

release

public void release(SedaQueue queue)

release a queue

Parameters:

queue -

getQueueNumber

public int getQueueNumber()

Get Queue number

Returns:

number of running Queues

registerQueue

protected void registerQueue(ComponentNameSpace cns,
                             SedaQueue queue)

unregisterQueue

protected void unregisterQueue(SedaQueue queue)

getAttributeInfos

public MBeanAttributeInfo[] getAttributeInfos()
                                       throws JMException

Get an array of MBeanAttributeInfo

Specified by:

getAttributeInfos in interface MBeanInfoProvider

Overrides:

getAttributeInfos in class AbstractFlow

Returns:

array of AttributeInfos

Throws:

JMException

suspendTx

protected void suspendTx(MessageExchangeImpl me)
                  throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException

resumeTx

protected void resumeTx(MessageExchangeImpl me)
                 throws javax.jbi.messaging.MessagingException

Throws:

javax.jbi.messaging.MessagingException