rice.pastry.testing
Class HelloWorldApp

java.lang.Object
  rice.pastry.client.PastryAppl
      rice.pastry.testing.HelloWorldApp

All Implemented Interfaces:

MessageReceiver

public class HelloWorldApp

extends PastryAppl

A hello world example for pastry. This is the per-node app object.

Version:

$Id: HelloWorldApp.java 3038 2006-02-07 10:01:01Z jeffh $

Author:

Sitaram Iyer

Field Summary

Fields inherited from class rice.pastry.client.PastryAppl

address, instance, logger, thePastryNode

Constructor Summary

HelloWorldApp(PastryNode pn)

Method Summary

boolean	enrouteMessage(Message msg, Id key, NodeHandle nextHop, SendOptions opt) Invoked on intermediate nodes in routing path.
Address	getAddress() Get address.
Credentials	getCredentials() Get credentials.
void	leafSetChange(NodeHandle nh, boolean wasAdded) Invoked upon change to leafset.
void	messageForAppl(Message msg) Invoked on destination node when a message arrives.
void	notifyReady() Invoked by {RMI,Direct}PastryNode when the node has something in its leaf set, and has become ready to receive application messages.
void	routeSetChange(NodeHandle nh, boolean wasAdded) Invoked upon change to routing table.
void	sendRndMsg(RandomSource rng) Sends a message to a randomly chosen node.

Methods inherited from class rice.pastry.client.PastryAppl

deliverWhenNotReady, destroy, getLeafSet, getNodeHandle, getNodeId, getRoutingTable, isClosest, receiveMessage, register, registerReceiver, routeMsg, routeMsgDirect, sendMessage

Methods inherited from class java.lang.Object

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

Constructor Detail

HelloWorldApp

public HelloWorldApp(PastryNode pn)

Method Detail

sendRndMsg

public void sendRndMsg(RandomSource rng)

Sends a message to a randomly chosen node. Yeah, for fun.

Parameters:

rng - Randon number generator.

getAddress

public Address getAddress()

Get address.

Overrides:

getAddress in class PastryAppl

Returns:

the address of this application.

getCredentials

public Credentials getCredentials()

Get credentials.

Specified by:

getCredentials in class PastryAppl

Returns:

credentials.

messageForAppl

public void messageForAppl(Message msg)

Invoked on destination node when a message arrives.

Specified by:

messageForAppl in class PastryAppl

Parameters:

msg - Message being routed around

enrouteMessage

public boolean enrouteMessage(Message msg,
                              Id key,
                              NodeHandle nextHop,
                              SendOptions opt)

Invoked on intermediate nodes in routing path.

Overrides:

enrouteMessage in class PastryAppl

Parameters:

msg - Message that's passing through this node.

key - destination

nextHop - next hop

opt - send options

Returns:

true if message needs to be forwarded according to plan.

leafSetChange

public void leafSetChange(NodeHandle nh,
                          boolean wasAdded)

Invoked upon change to leafset.

Overrides:

leafSetChange in class PastryAppl

Parameters:

nh - node handle that got added/removed

wasAdded - added (true) or removed (false)

routeSetChange

public void routeSetChange(NodeHandle nh,
                           boolean wasAdded)

Invoked upon change to routing table.

Overrides:

routeSetChange in class PastryAppl

Parameters:

nh - node handle that got added/removed

wasAdded - added (true) or removed (false)

notifyReady

public void notifyReady()

Invoked by {RMI,Direct}PastryNode when the node has something in its leaf set, and has become ready to receive application messages.

Overrides:

notifyReady in class PastryAppl