org.apache.jcs.auxiliary.lateral.socket.tcp.discovery
Class UDPDiscoveryReceiver

java.lang.Object
  org.apache.jcs.auxiliary.lateral.socket.tcp.discovery.UDPDiscoveryReceiver

All Implemented Interfaces:

IShutdownObserver, java.lang.Runnable

public class UDPDiscoveryReceiver

extends java.lang.Object

implements java.lang.Runnable, IShutdownObserver

Receives UDP Discovery messages.

Nested Class Summary

class

UDPDiscoveryReceiver.MessageHandler Separate thread run when a command comes into the UDPDiscoveryReceiver.

Field Summary

protected UDPDiscoveryService

service Service to get cache names and hande request broadcasts

Constructor Summary

UDPDiscoveryReceiver(UDPDiscoveryService service, java.lang.String multicastAddressString, int multicastPort, ICompositeCacheManager cacheMgr)
Constructor for the LateralUDPReceiver object.

Method Summary

int	getCnt()
void	run() Main processing method for the LateralUDPReceiver object
void	setCnt(int cnt)
void	shutdown() Tells the observer that the observable has received a shutdown command.
java.lang.Object	waitForMessage() Highly unreliable.

Methods inherited from class java.lang.Object

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

Field Detail

service

protected UDPDiscoveryService service

Service to get cache names and hande request broadcasts

Constructor Detail

UDPDiscoveryReceiver

public UDPDiscoveryReceiver(UDPDiscoveryService service,
                            java.lang.String multicastAddressString,
                            int multicastPort,
                            ICompositeCacheManager cacheMgr)
                     throws java.io.IOException

Constructor for the LateralUDPReceiver object.

We determine out own host using InetAddress

Parameters:

service -

multicastAddressString -

multicastPort -

cacheMgr -

Throws:

java.io.IOException

Method Detail

waitForMessage

public java.lang.Object waitForMessage()
                                throws java.io.IOException

Highly unreliable. If it is processing one message while another comes in , the second message is lost. This is for low concurency peppering.

Returns:

the object message

Throws:

java.io.IOException

run

public void run()

Main processing method for the LateralUDPReceiver object

Specified by:

run in interface java.lang.Runnable

setCnt

public void setCnt(int cnt)

Parameters:

cnt - The cnt to set.

getCnt

public int getCnt()

Returns:

Returns the cnt.

shutdown

public void shutdown()

Description copied from interface: IShutdownObserver

Tells the observer that the observable has received a shutdown command.

Specified by:

shutdown in interface IShutdownObserver