edu.vub.at.actors.net.cmd
Class CMDHandshake

java.lang.Object
  edu.vub.at.actors.net.cmd.VMCommand
      edu.vub.at.actors.net.cmd.CMDHandshake

All Implemented Interfaces:

java.io.Serializable

public class CMDHandshake

extends VMCommand

A handshake command is sent when a VM discovers another VM in its environment. It sends its own GUID to the newly discovered VM, which can then add this GUID to its VM address book. SENDER: the discovering VM RECEIVER: the discovered VM MODE: ASYNCHRONOUS, UNICAST PROPERTIES: GUID of sender REPLY: none

Author:

tvcutsem

See Also:

Serialized Form

Field Summary

private GUID

senderVMId_

Fields inherited from class edu.vub.at.actors.net.cmd.VMCommand

_TRANSMISSION_TIMEOUT_

Constructor Summary

CMDHandshake(GUID senderVMId)

Method Summary

void	send(org.jgroups.blocks.MessageDispatcher dispatcher, org.jgroups.Address recipientVM)
java.lang.Object	uponReceiptBy(ELVirtualMachine remoteHost, org.jgroups.Message wrapper) To be overridden by subclasses to specify the behaviour to execute upon reception and execution of the command object at the recipient VM.

Methods inherited from class edu.vub.at.actors.net.cmd.VMCommand

sendAsyncMulticast, sendAsyncUnicast, sendSynchronousUnicast, toString

Methods inherited from class java.lang.Object

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

Field Detail

senderVMId_

private final GUID senderVMId_

Constructor Detail

CMDHandshake

public CMDHandshake(GUID senderVMId)

Method Detail

send

public void send(org.jgroups.blocks.MessageDispatcher dispatcher,
                 org.jgroups.Address recipientVM)

uponReceiptBy

public java.lang.Object uponReceiptBy(ELVirtualMachine remoteHost,
                                      org.jgroups.Message wrapper)
                               throws java.lang.Exception

Description copied from class: VMCommand

To be overridden by subclasses to specify the behaviour to execute upon reception and execution of the command object at the recipient VM. This code is still executed in a JGroups thread!

Specified by:

uponReceiptBy in class VMCommand

Parameters:

remoteHost - the host at which the command arrived and is executed

wrapper - the JGroups message wrapper that was used to transport this command object

Throws:

java.lang.Exception