rice.pastry.direct
Class DirectPastryNode

java.lang.Object
  java.util.Observable
      rice.pastry.PastryNode
          rice.pastry.direct.DirectPastryNode

All Implemented Interfaces:

Destructable, MessageReceiver, Node

public class DirectPastryNode

extends PastryNode

Direct pastry node. Subclasses PastryNode, and does about nothing else.

Version:

$Id: DirectPastryNode.java 2860 2005-12-20 10:08:14Z jeffh $

Author:

Sitaram Iyer

Field Summary

protected boolean	alive DESCRIBE THE FIELD
protected Timer	timer DESCRIBE THE FIELD

Fields inherited from class rice.pastry.PastryNode

apps, localhandle, logger, myNodeId

Constructor Summary

DirectPastryNode(NodeId id, NetworkSimulator sim, Environment e, NodeRecord nr)
Constructor for DirectPastryNode.

Method Summary

NodeHandle	coalesce(NodeHandle newHandle) DESCRIBE THE METHOD
void	destroy() DESCRIBE THE METHOD
void	doneNode(NodeHandle bootstrap) DESCRIBE THE METHOD
void	initiateJoin(NodeHandle bootstrap) Sends an InitiateJoin message to itself.
boolean	isAlive() Gets the Alive attribute of the DirectPastryNode object
void	nodeIsReady() Called from PastryNode after the join succeeds.
ScheduledMessage	scheduleMsg(Message msg, long delay) Schedule the specified message to be sent to the local node after a specified delay.
ScheduledMessage	scheduleMsg(Message msg, long delay, long period) Schedule the specified message for repeated fixed-delay delivery to the local node, beginning after the specified delay.
ScheduledMessage	scheduleMsgAtFixedRate(Message msg, long delay, long period) Schedule the specified message for repeated fixed-rate delivery to the local node, beginning after the specified delay.
void	setDirectElements() Sets the DirectElements attribute of the DirectPastryNode object

Methods inherited from class rice.pastry.PastryNode

addLeafSetObserver, addRouteSetObserver, deleteLeafSetObserver, deleteRouteSetObserver, getEnvironment, getId, getIdFactory, getLeafSet, getLocalHandle, getLocalNodeHandle, getMessageDispatch, getNodeId, getRoutingTable, isClosest, isReady, nodeIsReady, process, receiveMessage, registerApp, registerApplication, registerApplication, registerReceiver, setElements, setMessageDispatch, setReady, setReady, toString

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Field Detail

alive

protected boolean alive

DESCRIBE THE FIELD

timer

protected Timer timer

DESCRIBE THE FIELD

Constructor Detail

DirectPastryNode

public DirectPastryNode(NodeId id,
                        NetworkSimulator sim,
                        Environment e,
                        NodeRecord nr)

Constructor for DirectPastryNode.

Parameters:

id - DESCRIBE THE PARAMETER

sim - DESCRIBE THE PARAMETER

e - DESCRIBE THE PARAMETER

nr - DESCRIBE THE PARAMETER

Method Detail

isAlive

public boolean isAlive()

Gets the Alive attribute of the DirectPastryNode object

Returns:

The Alive value

setDirectElements

public void setDirectElements()

Sets the DirectElements attribute of the DirectPastryNode object

doneNode

public void doneNode(NodeHandle bootstrap)

DESCRIBE THE METHOD

Parameters:

bootstrap - DESCRIBE THE PARAMETER

destroy

public void destroy()

DESCRIBE THE METHOD

Specified by:

destroy in interface Destructable

Overrides:

destroy in class PastryNode

initiateJoin

public final void initiateJoin(NodeHandle bootstrap)

Sends an InitiateJoin message to itself.

Specified by:

initiateJoin in class PastryNode

Parameters:

bootstrap - Node handle to bootstrap with.

nodeIsReady

public final void nodeIsReady()

Called from PastryNode after the join succeeds.

Specified by:

nodeIsReady in class PastryNode

scheduleMsg

public ScheduledMessage scheduleMsg(Message msg,
                                    long delay)

Schedule the specified message to be sent to the local node after a specified delay. Useful to provide timeouts.

Specified by:

scheduleMsg in class PastryNode

Parameters:

msg - a message that will be delivered to the local node after the specified delay

delay - time in milliseconds before message is to be delivered

Returns:

the scheduled event object; can be used to cancel the message

scheduleMsg

public ScheduledMessage scheduleMsg(Message msg,
                                    long delay,
                                    long period)

Schedule the specified message for repeated fixed-delay delivery to the local node, beginning after the specified delay. Subsequent executions take place at approximately regular intervals separated by the specified period. Useful to initiate periodic tasks.

Specified by:

scheduleMsg in class PastryNode

Parameters:

msg - a message that will be delivered to the local node after the specified delay

delay - time in milliseconds before message is to be delivered

period - time in milliseconds between successive message deliveries

Returns:

the scheduled event object; can be used to cancel the message

scheduleMsgAtFixedRate

public ScheduledMessage scheduleMsgAtFixedRate(Message msg,
                                               long delay,
                                               long period)

Schedule the specified message for repeated fixed-rate delivery to the local node, beginning after the specified delay. Subsequent executions take place at approximately regular intervals, separated by the specified period.

Specified by:

scheduleMsgAtFixedRate in class PastryNode

Parameters:

msg - a message that will be delivered to the local node after the specified delay

delay - time in milliseconds before message is to be delivered

period - time in milliseconds between successive message deliveries

Returns:

the scheduled event object; can be used to cancel the message

coalesce

public NodeHandle coalesce(NodeHandle newHandle)

DESCRIBE THE METHOD

Specified by:

coalesce in class PastryNode

Parameters:

newHandle - DESCRIBE THE PARAMETER

Returns:

DESCRIBE THE RETURN VALUE