Class SHUFFLE

java.lang.Object

org.jgroups.stack.Protocol

org.jgroups.protocols.SHUFFLE

All Implemented Interfaces:

Runnable

public class SHUFFLE
extends Protocol
implements Runnable

This layer shuffles upcoming messages, put it just above your bottom layer. If you system sends less than 2 messages per sec you can notice a latency due to this layer.

Author:

Gianluca Collot

Field Summary

Fields inherited from class Protocol

down_prot, log, props, stack, stats, up_prot

Constructor Summary

Constructors

Constructor	Description
SHUFFLE()

Method Summary

Modifier and Type	Method	Description
String	getName()
void	run()	Removes a random chosen message from the messages Listinvalid input: '<'\code> if there are less than 10 messages in the List it waits some time to ensure to chose from a set of messages > 1.
boolean	setProperties(Properties props)	Configures the protocol initially.
void	start()	Starts the messagesHandlerinvalid input: '<'\code>
void	stop()	Stops the messagesHandler
Object	up(Event evt)	Adds upcoming messages to the messages Listinvalid input: '<'\code> where the messagesHandlerinvalid input: '<'\code> retrieves them.

Methods inherited from class Protocol

destroy, down, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getProperties, getProtocolStack, getThreadFactory, getTransport, getUpProtocol, init, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStats, setDownProtocol, setPropertiesInternal, setProtocolStack, setUpProtocol, statsEnabled, upThreadEnabled

Methods inherited from class Object

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

Constructor Details

SHUFFLE

public SHUFFLE()

Method Details

getName

public String getName()

Specified by:

getName in class Protocol

setProperties

public boolean setProperties(Properties props)

Description copied from class: Protocol

Configures the protocol initially. A configuration string consists of name=value items, separated by a ';' (semicolon), e.g.:

"loopback=false;unicast_inport=4444"

Overrides:

setProperties in class Protocol

up

public Object up(Event evt)

Adds upcoming messages to the messages Listinvalid input: '<'\code> where the messagesHandlerinvalid input: '<'\code> retrieves them.

Overrides:

up in class Protocol

start

public void start()
           throws Exception

Starts the messagesHandlerinvalid input: '<'\code>

Overrides:

start in class Protocol

Throws:

Exception - Thrown if protocol cannot be started successfully. This will cause the ProtocolStack to fail, so Channel.connect(String) will throw an exception

stop

public void stop()

Stops the messagesHandler

Overrides:

stop in class Protocol

run

public void run()

Removes a random chosen message from the messages Listinvalid input: '<'\code> if there are less than 10 messages in the List it waits some time to ensure to chose from a set of messages > 1.

Specified by:

run in interface Runnable