Package org.jgroups.util

Class DistributionSampler

java.lang.Object

org.jgroups.util.DistributionSampler

public class DistributionSampler
extends java.lang.Object

Records samples (e.g. message sizes or times) by buckets, e.g. 0-10,11-100,101-1000 etc. All buckets are defined at creation time.

Since:

5.4.9

Author:

Bela Ban

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DistributionSampler.Bucket

Field Summary

Fields

Modifier and Type	Field	Description
protected DistributionSampler.Bucket[]	buckets
protected boolean	exception_on_missing_bucket
protected long	max_value
protected long	min_value

Constructor Summary

Constructors

Constructor	Description
DistributionSampler(long... buckets)	Creates a new sampler
DistributionSampler(java.util.List<java.lang.Long> buckets)

Method Summary

Modifier and Type	Method	Description
DistributionSampler	add(long value)
protected DistributionSampler.Bucket	binarySearch(int from, int to, long value)
DistributionSampler.Bucket[]	buckets()
boolean	exceptionOnMissingBucket()
DistributionSampler	exceptionOnMissingBucket(boolean b)
protected DistributionSampler.Bucket	getBucket(long value)
protected static long[]	listToArray(java.util.List<java.lang.Long> buckets)
long	maxValue()
long	minValue()
DistributionSampler	reset()
protected static void	sanityCheck(long... buckets)
int	size()
java.lang.String	toString()
long	total()

Methods inherited from class java.lang.Object

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

Field Detail

buckets

protected final DistributionSampler.Bucket[] buckets

min_value

protected long min_value

max_value

protected long max_value

exception_on_missing_bucket

protected boolean exception_on_missing_bucket

Constructor Detail

DistributionSampler

public DistributionSampler(long... buckets)

Creates a new sampler

Parameters:

buckets - The buckets. Needs to be an even number. Each tuple defines min-max size. Needs to be in ascending order of size and adjacent.

DistributionSampler

public DistributionSampler(java.util.List<java.lang.Long> buckets)

Method Detail

minValue

public long minValue()

maxValue

public long maxValue()

buckets

public DistributionSampler.Bucket[] buckets()

exceptionOnMissingBucket

public boolean exceptionOnMissingBucket()

exceptionOnMissingBucket

public DistributionSampler exceptionOnMissingBucket(boolean b)

add

public DistributionSampler add(long value)

reset

public DistributionSampler reset()

total

public long total()

size

public int size()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

getBucket

protected DistributionSampler.Bucket getBucket(long value)

binarySearch

protected DistributionSampler.Bucket binarySearch(int from,
                                                  int to,
                                                  long value)

listToArray

protected static long[] listToArray(java.util.List<java.lang.Long> buckets)

sanityCheck

protected static void sanityCheck(long... buckets)