seda.sandStorm.core
Class MulticlassRateLimitingPredicate

java.lang.Object
  seda.sandStorm.core.MulticlassRateLimitingPredicate

All Implemented Interfaces:

EnqueuePredicateIF

public class MulticlassRateLimitingPredicate
extends java.lang.Object
implements EnqueuePredicateIF

This enqueue predicate implements multiclass input rate policing.

Field Summary

private seda.util.StatsGatherer	acceptArrivalStats
private static boolean	DEBUG
private int[]	depth
private seda.util.StatsGatherer	interArrivalStats
private long[]	lasttime
private long	MIN_REGEN_TIME
private int	NUM_CLASSES
private static boolean	PROFILE
private double[]	regenTimeMS
private double[]	targetRate
private SinkIF	thesink
private double[]	tokenCount

Constructor Summary

MulticlassRateLimitingPredicate(SinkIF sink, int numclasses, double targetRate, int depth)
Create a new RateLimitingPredicate for the given sink, targetRate, and token bucket depth.

Method Summary

boolean	accept(QueueElementIF qel) Returns true if the given element can be accepted into the queue.
int	getBucketSize(int theclass) Return the number of tokens currently in the bucket.
int	getDepth(int theclass) Return the current depth.
double	getTargetRate(int theclass) Return the current rate limit.
void	setDepth(int theclass, int depth) Set the bucket depth.
void	setTargetRate(int theclass, double targetRate) Set the rate limit.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

thesink

private SinkIF thesink

NUM_CLASSES

private int NUM_CLASSES

targetRate

private double[] targetRate

depth

private int[] depth

tokenCount

private double[] tokenCount

regenTimeMS

private double[] regenTimeMS

lasttime

private long[] lasttime

MIN_REGEN_TIME

private long MIN_REGEN_TIME

PROFILE

private static final boolean PROFILE

See Also:

Constant Field Values

interArrivalStats

private seda.util.StatsGatherer interArrivalStats

acceptArrivalStats

private seda.util.StatsGatherer acceptArrivalStats

Constructor Detail

MulticlassRateLimitingPredicate

public MulticlassRateLimitingPredicate(SinkIF sink,
                                       int numclasses,
                                       double targetRate,
                                       int depth)

Create a new RateLimitingPredicate for the given sink, targetRate, and token bucket depth. A rate of -1.0 indicates no rate limit.

Method Detail

accept

public boolean accept(QueueElementIF qel)

Returns true if the given element can be accepted into the queue.

Specified by:

accept in interface EnqueuePredicateIF

Parameters:

qel - The QueueElementIF to enqueue

Returns:

True if the sink accepts the element; false otherwise.

getTargetRate

public double getTargetRate(int theclass)

Return the current rate limit.

getDepth

public int getDepth(int theclass)

Return the current depth.

getBucketSize

public int getBucketSize(int theclass)

Return the number of tokens currently in the bucket.

setTargetRate

public void setTargetRate(int theclass,
                          double targetRate)

Set the rate limit. A limit of -1.0 indicates no rate limit.

setDepth

public void setDepth(int theclass,
                     int depth)

Set the bucket depth.