rice.pastry.direct
Class EuclideanNetwork

java.lang.Object
  |
  +--rice.pastry.direct.EuclideanNetwork

All Implemented Interfaces:

NetworkSimulator

public class EuclideanNetwork

extends java.lang.Object

implements NetworkSimulator

Euclidean network topology and idealized node life. Emulates a network of nodes that are randomly placed in a plane. Proximity is based on euclidean distance in the plane.

Version:

$Id: EuclideanNetwork.java,v 1.13 2002/07/27 23:24:52 animesh Exp $

Author:

Andrew Ladd, Rongmei Zhang

Constructor Summary

EuclideanNetwork()
Constructor.

Method Summary

void	deliverMessage(Message msg, PastryNode node) Deliver message.
DirectNodeHandle	getClosest(NodeId nid) find the closest NodeId to an input NodeId out of all NodeIds in the network
TestRecord	getTestRecord() get TestRecord
boolean	isAlive(NodeId nid) testing if a NodeId is alive
int	proximity(NodeId a, NodeId b) computes the proximity between two NodeIds
void	registerNodeId(DirectNodeHandle nh) register a new node
void	setAlive(NodeId nid, boolean alive) set the liveliness of a NodeId
void	setTestRecord(TestRecord tr) set TestRecord
boolean	simulate() Simulate one message delivery.

Methods inherited from class java.lang.Object

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

Constructor Detail

EuclideanNetwork

public EuclideanNetwork()

Constructor.

Method Detail

registerNodeId

public void registerNodeId(DirectNodeHandle nh)

register a new node

Specified by:

registerNodeId in interface NetworkSimulator

Parameters:

nh - the DirectNodeHandle being registered

isAlive

public boolean isAlive(NodeId nid)

testing if a NodeId is alive

Specified by:

isAlive in interface NetworkSimulator

Parameters:

nid - the NodeId being tested

Returns:

true if nid is alive false otherwise

setAlive

public void setAlive(NodeId nid,
                     boolean alive)

set the liveliness of a NodeId

Specified by:

setAlive in interface NetworkSimulator

Parameters:

nid - the NodeId being set

alive - the value being set

proximity

public int proximity(NodeId a,
                     NodeId b)

computes the proximity between two NodeIds

Specified by:

proximity in interface NetworkSimulator

Parameters:

a - the first NodeId

b - the second NodeId

Returns:

the proximity between the two input NodeIds

deliverMessage

public void deliverMessage(Message msg,
                           PastryNode node)

Description copied from interface: NetworkSimulator

Deliver message.

Specified by:

deliverMessage in interface NetworkSimulator

Parameters:

msg - message to deliver.

node - the Pastry node to deliver it to.

simulate

public boolean simulate()

Description copied from interface: NetworkSimulator

Simulate one message delivery.

Specified by:

simulate in interface NetworkSimulator

Returns:

true if a message was delivered, false otherwise.

setTestRecord

public void setTestRecord(TestRecord tr)

set TestRecord

Specified by:

setTestRecord in interface NetworkSimulator

Parameters:

tr - input TestRecord

getTestRecord

public TestRecord getTestRecord()

get TestRecord

Specified by:

getTestRecord in interface NetworkSimulator

Returns:

the returned TestRecord

getClosest

public DirectNodeHandle getClosest(NodeId nid)

find the closest NodeId to an input NodeId out of all NodeIds in the network

Specified by:

getClosest in interface NetworkSimulator

Parameters:

nid - the input NodeId

Returns:

the NodeId closest to the input NodeId in the network