ds.funnel.traffic.component

Interface PacketTimeDistribution

All Known Implementing Classes:

BurstyTimeDistribution, ECGTimeDistribution, EEGTimeDistribution, NormalTimeDistribution, RandomTimeDistribution, RegularTimeDistribution, ThoraxTimeDistribution

public interface PacketTimeDistribution

The PacketTimeDistribution interface defines an object which specifies some sort of time distribution pattern for packet transmissions. A PacketTimeDistribution has a specified type (Poisson, bursty, etc); any class implementing the interface must have a method getType() which returns a typeId (an int) designating the type of distribution it simulates. Additionally, a class implementing PacketTimeDistribution must define a method nextInterval() of return type int which takes no arguments. nextInterval() should return a time, in ms, before the next packet will be sent following the class' distribution type.

Author:

Kira Lindburg

Method Summary

Modifier and Type	Method and Description
int	getType()
int	nextInterval()
int[]	prediction(int size) Generates an array containing predicted packet transmission times, in terms of number of ms from this instant.

Method Detail

getType

int getType()

Returns:

an integer id number specifying the type of distribution. This should be a unique identifier for the type of time distribution generated by a given PacketTimeDistribution.

nextInterval

int nextInterval()

Returns:

an interval, in ms, to wait before the next packet should be sent following this distribution

prediction

int[] prediction(int size)

Generates an array containing predicted packet transmission times, in terms of number of ms from this instant.

Parameters:

size - the number of predictions contained in the returned array

Returns:

an array of the specified size, containing predicted packet transmission times in numbers of ms after this method was called