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 1.21 2005/06/09 16:22:01 jeffh Exp $

Author:

Andrew Ladd, Rongmei Zhang

Constructor Summary

EuclideanNetwork(Environment env)
Constructor.

Method Summary

void	deliverMessage(Message msg, PastryNode node) DESCRIBE THE METHOD
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() DESCRIBE THE METHOD

Methods inherited from class java.lang.Object

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

Constructor Detail

EuclideanNetwork

public EuclideanNetwork(Environment env)

Constructor.

Parameters:

env - DESCRIBE THE PARAMETER

Method Detail

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

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

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

setTestRecord

public void setTestRecord(TestRecord tr)

set TestRecord

Specified by:

setTestRecord in interface NetworkSimulator

Parameters:

tr - input TestRecord

registerNodeId

public void registerNodeId(DirectNodeHandle nh)

register a new node

Specified by:

registerNodeId in interface NetworkSimulator

Parameters:

nh - the DirectNodeHandle being registered

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)

DESCRIBE THE METHOD

Specified by:

deliverMessage in interface NetworkSimulator

Parameters:

msg - DESCRIBE THE PARAMETER

node - DESCRIBE THE PARAMETER

simulate

public boolean simulate()

DESCRIBE THE METHOD

Specified by:

simulate in interface NetworkSimulator

Returns:

DESCRIBE THE RETURN VALUE