Package org.terracotta.statistics

Class SampledStatisticAdapter<T extends java.io.Serializable>

java.lang.Object

org.terracotta.statistics.SampledStatisticAdapter<T>

All Implemented Interfaces:

SampledStatistic<T>, ValueStatistic<T>

public class SampledStatisticAdapter<T extends java.io.Serializable>
extends java.lang.Object
implements SampledStatistic<T>

Field Summary

Fields

Modifier and Type	Field	Description
private ValueStatistic<T>	statistic
private java.util.function.LongSupplier	timeSource

Constructor Summary

Constructors

Modifier	Constructor	Description
private	SampledStatisticAdapter(ValueStatistic<T> statistic, java.util.function.LongSupplier timeSource)

Method Summary

Modifier and Type	Method	Description
java.util.List<Sample<T>>	history()	The history of values
java.util.List<Sample<T>>	history(long since)	The history of values, since a given time in ms
static <T extends java.io.Serializable> SampledStatistic<T>	sample(ValueStatistic<T> accessor, java.util.function.LongSupplier timeSource)
StatisticType	type()
T	value()

Methods inherited from class java.lang.Object

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

Field Detail

timeSource

private final java.util.function.LongSupplier timeSource

statistic

private final ValueStatistic<T extends java.io.Serializable> statistic

Constructor Detail

SampledStatisticAdapter

private SampledStatisticAdapter(ValueStatistic<T> statistic,
                                java.util.function.LongSupplier timeSource)

Method Detail

value

public T value()

Specified by:

value in interface ValueStatistic<T extends java.io.Serializable>

Returns:

The current statistic value

history

public java.util.List<Sample<T>> history()

Description copied from interface: SampledStatistic

The history of values

Specified by:

history in interface SampledStatistic<T extends java.io.Serializable>

Returns:

the list

history

public java.util.List<Sample<T>> history(long since)

Description copied from interface: SampledStatistic

The history of values, since a given time in ms

Specified by:

history in interface SampledStatistic<T extends java.io.Serializable>

Parameters:

since - starting point of history in ms

Returns:

the list

type

public StatisticType type()

Specified by:

type in interface ValueStatistic<T extends java.io.Serializable>

Returns:

The statistic type

sample

public static <T extends java.io.Serializable> SampledStatistic<T> sample(ValueStatistic<T> accessor,
                                                                          java.util.function.LongSupplier timeSource)