Class VivaldiPositionImpl

java.lang.Object

com.biglybt.core.dht.netcoords.vivaldi.ver1.impl.VivaldiPositionImpl

All Implemented Interfaces:

DHTNetworkPosition, VivaldiPosition

public class VivaldiPositionImpl
extends Object
implements VivaldiPosition

Vivaldi Papers : http://www.sigcomm.org/sigcomm2004/papers/p426-dabek111111.pdf

Field Summary

Fields

Modifier and Type	Field	Description
private static final float	cc
private static final float	ce
private HeightCoordinatesImpl	coordinates
private float	error
private static final float	initial_error
private int	nbUpdates

Fields inherited from interface DHTNetworkPosition

POSITION_TYPE_NONE, POSITION_TYPE_VIVALDI_V1, POSITION_TYPE_VIVALDI_V2

Fields inherited from interface VivaldiPosition

CONVERGE_EVERY, CONVERGE_FACTOR, ERROR_MIN, FLOAT_ARRAY_SIZE

Constructor Summary

Constructors

Constructor	Description
VivaldiPositionImpl(HeightCoordinatesImpl coordinates)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object arg0)
float	estimateRTT(DHTNetworkPosition _other)
float	estimateRTT(Coordinates coordinates)
void	fromFloatArray(float[] data)
Coordinates	getCoordinates()
float	getErrorEstimate()
double[]	getLocation()
byte	getPositionType()
int	getSerialisedSize()	number of bytes on wire
boolean	isValid()
void	serialise(DataOutputStream os)
void	setErrorEstimate(float error)
float[]	toFloatArray()
String	toString()
void	update(byte[] _other_id, DHTNetworkPosition _other, float rtt)
void	update(float rtt, float[] data)
void	update(float rtt, Coordinates cj, float ej)
private boolean	valid(float f)

Methods inherited from class Object

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

Field Details

cc

private static final float cc

See Also:

• Constant Field Values

ce

private static final float ce

See Also:

• Constant Field Values

initial_error

private static final float initial_error

See Also:

• Constant Field Values

coordinates

private HeightCoordinatesImpl coordinates

error

private float error

nbUpdates

private int nbUpdates

Constructor Details

VivaldiPositionImpl

public VivaldiPositionImpl(HeightCoordinatesImpl coordinates)

Method Details

getPositionType

public byte getPositionType()

Specified by:

getPositionType in interface DHTNetworkPosition

getCoordinates

public Coordinates getCoordinates()

Specified by:

getCoordinates in interface VivaldiPosition

getLocation

public double[] getLocation()

Specified by:

getLocation in interface DHTNetworkPosition

getErrorEstimate

public float getErrorEstimate()

Specified by:

getErrorEstimate in interface VivaldiPosition

setErrorEstimate

public void setErrorEstimate(float error)

Specified by:

setErrorEstimate in interface VivaldiPosition

update

public void update(float rtt,
 Coordinates cj,
 float ej)

Specified by:

update in interface VivaldiPosition

isValid

public boolean isValid()

Specified by:

isValid in interface DHTNetworkPosition

valid

private boolean valid(float f)

update

public void update(float rtt,
 float[] data)

Specified by:

update in interface VivaldiPosition

estimateRTT

public float estimateRTT(Coordinates coordinates)

Specified by:

estimateRTT in interface VivaldiPosition

toFloatArray

public float[] toFloatArray()

Specified by:

toFloatArray in interface VivaldiPosition

fromFloatArray

public void fromFloatArray(float[] data)

Specified by:

fromFloatArray in interface VivaldiPosition

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object arg0)

Overrides:

equals in class Object

estimateRTT

public float estimateRTT(DHTNetworkPosition _other)

Specified by:

estimateRTT in interface DHTNetworkPosition

Parameters:

_other -

Returns:

Float.NaN if no value available

update

public void update(byte[] _other_id,
 DHTNetworkPosition _other,
 float rtt)

Specified by:

update in interface DHTNetworkPosition

getSerialisedSize

public int getSerialisedSize()

Description copied from interface: DHTNetworkPosition

number of bytes on wire

Specified by:

getSerialisedSize in interface DHTNetworkPosition

Returns:

serialise

public void serialise(DataOutputStream os)
               throws IOException

Specified by:

serialise in interface DHTNetworkPosition

Throws:

IOException