rice.pastry.direct
Class DirectPastryNode

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

All Implemented Interfaces:

Destructable, Node, NodeHandleFactory

public class DirectPastryNode
extends PastryNode

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

Version:

$Id: DirectPastryNode.java 3613 2007-02-15 14:45:14Z jstewart $

Author:

Sitaram Iyer

Field Summary

protected Timer

timer

Fields inherited from class rice.pastry.PastryNode

apps, joinFailed, joinFailedReason, leafSet, localhandle, logger, myNodeId, routeSet

Constructor Summary

DirectPastryNode(Id id, NetworkSimulator sim, Environment e, NodeRecord nr)

Method Summary

NodeHandle	coalesce(NodeHandle newHandle)
void	connect(NodeHandle remoteNode, AppSocketReceiver receiver, PastryAppl appl, int timeout) Called by PastryAppl to ask the transport layer to open a Socket to its counterpart on another node.
void	destroy() Method which kills a PastryNode.
void	doneNode(NodeHandle[] bootstrap)
static DirectPastryNode	getCurrentNode()
Logger	getLogger()
void	initiateJoin(NodeHandle[] bootstrap) Overridden by derived classes to initiate the join process
boolean	isAlive()
void	nodeIsReady() Called from PastryNode after the join succeeds.
int	proximity(NodeHandle that) The proximity of the node handle.
NodeHandle	readNodeHandle(InputBuffer buf)
void	receiveMessage(Message msg) message receiver interface.
void	route(RouteMessage rm)
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	send(NodeHandle nh, Message m) Deliver message to the NodeHandle.
static DirectPastryNode	setCurrentNode(DirectPastryNode dpn) Returns the previous one.

Methods inherited from class rice.pastry.PastryNode

addDestructable, addLeafSetListener, addLeafSetObserver, addRouteSetListener, addRouteSetObserver, buildEndpoint, deleteLeafSetListener, deleteLeafSetObserver, deleteRouteSetObserver, getDefaultReadyStrategy, getEnvironment, getId, getIdFactory, getLeafSet, getLocalHandle, getLocalNodeHandle, getMessageDispatch, getNodeId, getRoutingTable, isClosest, isReady, joinFailed, joinFailed, joinFailedReason, nodeIsReady, notifyReadyObservers, process, receiveMessage, registerApp, registerApplication, registerReceiver, removeDestructable, removeRouteSetListener, setElements, setMessageDispatch, setReady, setReady, setReadyStrategy, 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

timer

protected Timer timer

Constructor Detail

DirectPastryNode

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

Method Detail

setCurrentNode

public static DirectPastryNode setCurrentNode(DirectPastryNode dpn)

Returns the previous one.

Parameters:

dnh -

Returns:

getCurrentNode

public static DirectPastryNode getCurrentNode()

doneNode

public void doneNode(NodeHandle[] bootstrap)

isAlive

public boolean isAlive()

destroy

public void destroy()

Description copied from class: PastryNode

Method which kills a PastryNode. Note, this doesn't implicitly kill the environment. Make sure to call super.destroy() !!!

Specified by:

destroy in interface Destructable

Overrides:

destroy in class PastryNode

initiateJoin

public final void initiateJoin(NodeHandle[] bootstrap)

Description copied from class: PastryNode

Overridden by derived classes to initiate the join process

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)

Specified by:

coalesce in class PastryNode

receiveMessage

public void receiveMessage(Message msg)

Description copied from class: PastryNode

message receiver interface. synchronized so that the external message processing thread and the leafset/route maintenance thread won't interfere with application messages.

Overrides:

receiveMessage in class PastryNode

route

public void route(RouteMessage rm)

getLogger

public Logger getLogger()

proximity

public int proximity(NodeHandle that)

Description copied from class: PastryNode

The proximity of the node handle.

Specified by:

proximity in class PastryNode

Returns:

send

public void send(NodeHandle nh,
                 Message m)

Description copied from class: PastryNode

Deliver message to the NodeHandle.

Specified by:

send in class PastryNode

connect

public void connect(NodeHandle remoteNode,
                    AppSocketReceiver receiver,
                    PastryAppl appl,
                    int timeout)

Description copied from class: PastryNode

Called by PastryAppl to ask the transport layer to open a Socket to its counterpart on another node.

Specified by:

connect in class PastryNode

readNodeHandle

public NodeHandle readNodeHandle(InputBuffer buf)