org.terracotta.statistics.extended
Class RateImpl<T extends Enum<T>>

java.lang.Object
  org.terracotta.statistics.extended.RateImpl<T>

Type Parameters:

T - the generic type

All Implemented Interfaces:

SampledStatistic<Double>

public class RateImpl<T extends Enum<T>>
extends Object
implements SampledStatistic<Double>

The Class RateStatistic.

Author:

cdennis

Constructor Summary

RateImpl(OperationStatistic<T> source, Set<T> targets, long averagePeriod, TimeUnit averageTimeUnit, ScheduledExecutorService executor, int historySize, long historyPeriod, TimeUnit historyTimeUnit)
Instantiates a new rate statistic.

Method Summary

boolean	active() Active.
protected boolean	expire(long expiry) Check the statistic for expiry.
List<Timestamped<Double>>	history() History.
protected void	setHistory(int historySize, long historyPeriod, TimeUnit historyTimeUnit) Set the sample history parameters.
protected void	setWindow(long averagePeriod, TimeUnit averageTimeUnit) Sets the window.
protected void	start() Start sampling.
Double	value() Value.

Methods inherited from class java.lang.Object

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

Constructor Detail

RateImpl

public RateImpl(OperationStatistic<T> source,
                Set<T> targets,
                long averagePeriod,
                TimeUnit averageTimeUnit,
                ScheduledExecutorService executor,
                int historySize,
                long historyPeriod,
                TimeUnit historyTimeUnit)

Instantiates a new rate statistic.

Parameters:

targets - the targets

averagePeriod - the average period

executor - the executor

historySize - the history size

historyPeriod - the history period

Method Detail

active

public boolean active()

Description copied from interface: SampledStatistic

Active.

Specified by:

active in interface SampledStatistic<Double>

Returns:

true, if successful

value

public Double value()

Description copied from interface: SampledStatistic

Value.

Specified by:

value in interface SampledStatistic<Double>

Returns:

the t

history

public List<Timestamped<Double>> history()

Description copied from interface: SampledStatistic

History.

Specified by:

history in interface SampledStatistic<Double>

Returns:

the list

start

protected void start()

Start sampling.

setWindow

protected void setWindow(long averagePeriod,
                         TimeUnit averageTimeUnit)

Sets the window.

Parameters:

averagePeriod - the new window

averageTimeUnit - the new window's time unit

setHistory

protected void setHistory(int historySize,
                          long historyPeriod,
                          TimeUnit historyTimeUnit)

Set the sample history parameters.

Parameters:

historySize - history sample size

historyPeriod - history sample period

historyTimeUnit - history time unit

expire

protected boolean expire(long expiry)

Check the statistic for expiry.

Parameters:

expiry - expiry threshold

Returns:

true if expired