com.sun.enterprise.mgmt.transport
Class AbstractMulticastMessageSender

java.lang.Object
  com.sun.enterprise.mgmt.transport.AbstractMulticastMessageSender

All Implemented Interfaces:

MulticastMessageSender, ShoalMessageSender

Direct Known Subclasses:

BlockingIOMulticastSender, VirtualMulticastSender

public abstract class AbstractMulticastMessageSender
extends Object
implements MulticastMessageSender

This class implements a common MulticastMessageSender logic simply in order to help the specific transport layer to be implemented easily Mainly, this stores both source's PeerID and target's PeerID before broadcasting the message to all members

Author:

Bongjae Chang

Field Summary

protected PeerID

localPeerID Represents local PeerID.

Fields inherited from interface com.sun.enterprise.mgmt.transport.ShoalMessageSender

TCP_TRANSPORT, UDP_TRANSPORT

Constructor Summary

AbstractMulticastMessageSender()

Method Summary

boolean	broadcast(Message message) Broadcasts or Multicasts the given Message to all members
protected abstract boolean	doBroadcast(Message message) Broadcasts or Multicasts the given Message to all members
void	start()
void	stop()

Methods inherited from class java.lang.Object

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

Field Detail

localPeerID

protected PeerID localPeerID

Represents local PeerID. This value should be assigned in real MessageSender's implementation correspoinding to the specific transport layer

Constructor Detail

AbstractMulticastMessageSender

public AbstractMulticastMessageSender()

Method Detail

broadcast

public boolean broadcast(Message message)
                  throws IOException

Broadcasts or Multicasts the given Message to all members

Specified by:

broadcast in interface MulticastMessageSender

Parameters:

message - a message which is sent to all members

Returns:

true if the message is sent to all members successfully, otherwise false

Throws:

IOException - if I/O error occurs or given parameters are not valid

start

public void start()
           throws IOException

Specified by:

start in interface ShoalMessageSender

Throws:

IOException

stop

public void stop()
          throws IOException

Specified by:

stop in interface ShoalMessageSender

Throws:

IOException

doBroadcast

protected abstract boolean doBroadcast(Message message)
                                throws IOException

Broadcasts or Multicasts the given Message to all members

Parameters:

message - a message which is sent to all members

Returns:

true if the message is sent to all members successfully, otherwise false

Throws:

IOException - if I/O error occurs or given parameters are not valid