rice.pastry.standard
Class PeriodicLeafSetProtocol

java.lang.Object
  rice.pastry.client.PastryAppl
      rice.pastry.standard.PeriodicLeafSetProtocol

All Implemented Interfaces:

java.util.Observer

public class PeriodicLeafSetProtocol

extends PastryAppl

An implementation of a periodic-style leafset protocol

Version:

$Id: PeriodicLeafSetProtocol.java 3274 2006-05-15 16:17:47Z jeffh $

Author:

Alan Mislove

Nested Class Summary

static class

PeriodicLeafSetProtocol.PLSPMessageDeserializer DESCRIBE THE CLASS

Field Summary

int	CHECK_LIVENESS_PERIOD DESCRIBE THE FIELD
protected java.util.WeakHashMap	lastTimeReceivedBLS NodeHandle -> Long remembers the TIME when we received a BLS from that NodeHandle
protected LeafSet	leafSet DESCRIBE THE FIELD
protected NodeHandle	localHandle DESCRIBE THE FIELD
protected PastryNode	localNode DESCRIBE THE FIELD
int	PING_NEIGHBOR_PERIOD Related to rapidly determining direct neighbor liveness.
protected RoutingTable	routeTable DESCRIBE THE FIELD

Fields inherited from class rice.pastry.client.PastryAppl

address, deserializer, instance, logger, receiver, thePastryNode

Constructor Summary

PeriodicLeafSetProtocol(PastryNode ln, NodeHandle local, LeafSet ls, RoutingTable rt)
Builds a periodic leafset protocol

Method Summary

protected void	broadcastAll() Broadcast the leaf set to all members of the local leaf set.
boolean	deliverWhenNotReady() We always want to receive messages.
void	destroy() DESCRIBE THE METHOD
void	messageForAppl(Message msg) Should not be called becasue we are overriding the receiveMessage() interface anyway.
void	receiveMessage(Message msg) Receives messages.

Methods inherited from class rice.pastry.client.PastryAppl

accept, connect, enrouteMessage, getAddress, getLeafSet, getNodeHandle, getNodeId, getRoutingTable, isClosest, leafSetChange, notifyReady, receiveMessageInternal, receiveSocket, register, routeMsg, routeMsgDirect, routeSetChange, setDeserializer, update

Methods inherited from class java.lang.Object

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

Field Detail

localHandle

protected NodeHandle localHandle

DESCRIBE THE FIELD

localNode

protected PastryNode localNode

DESCRIBE THE FIELD

leafSet

protected LeafSet leafSet

DESCRIBE THE FIELD

routeTable

protected RoutingTable routeTable

DESCRIBE THE FIELD

lastTimeReceivedBLS

protected java.util.WeakHashMap lastTimeReceivedBLS

NodeHandle -> Long remembers the TIME when we received a BLS from that NodeHandle

PING_NEIGHBOR_PERIOD

public final int PING_NEIGHBOR_PERIOD

Related to rapidly determining direct neighbor liveness.

CHECK_LIVENESS_PERIOD

public final int CHECK_LIVENESS_PERIOD

DESCRIBE THE FIELD

Constructor Detail

PeriodicLeafSetProtocol

public PeriodicLeafSetProtocol(PastryNode ln,
                               NodeHandle local,
                               LeafSet ls,
                               RoutingTable rt)

Builds a periodic leafset protocol

Parameters:

ln - DESCRIBE THE PARAMETER

local - DESCRIBE THE PARAMETER

ls - DESCRIBE THE PARAMETER

rt - DESCRIBE THE PARAMETER

Method Detail

receiveMessage

public void receiveMessage(Message msg)

Receives messages.

Overrides:

receiveMessage in class PastryAppl

Parameters:

msg - the message.

broadcastAll

protected void broadcastAll()

Broadcast the leaf set to all members of the local leaf set.

messageForAppl

public void messageForAppl(Message msg)

Should not be called becasue we are overriding the receiveMessage() interface anyway.

Specified by:

messageForAppl in class PastryAppl

Parameters:

msg - DESCRIBE THE PARAMETER

deliverWhenNotReady

public boolean deliverWhenNotReady()

We always want to receive messages.

Overrides:

deliverWhenNotReady in class PastryAppl

Returns:

DESCRIBE THE RETURN VALUE

destroy

public void destroy()

DESCRIBE THE METHOD

Overrides:

destroy in class PastryAppl