com.sleepycat.je.utilint

Class LatencyPercentileMapStat

java.lang.Object

com.sleepycat.je.utilint.BaseStat<T>

com.sleepycat.je.utilint.Stat<String>

com.sleepycat.je.utilint.MapStat<Long,LatencyPercentile>

com.sleepycat.je.utilint.LatencyPercentileMapStat

All Implemented Interfaces:

Serializable, Cloneable

public class LatencyPercentileMapStat
extends MapStat<Long,LatencyPercentile>

A JE stat that maintains a map of individual LatencyPercentile values which can be looked up with a String key, and that returns results as a formatted string.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.sleepycat.je.utilint.MapStat

statMap

Fields inherited from class com.sleepycat.je.utilint.Stat

definition

Constructor Summary

Constructors

Constructor and Description
LatencyPercentileMapStat(StatGroup group, StatDefinition definition, float percentile) Creates an instance of this class using the default maximum for tracking latency values of .
LatencyPercentileMapStat(StatGroup group, StatDefinition definition, float percentile, int maxTrackedLatencyMillis) Creates an instance of this class.

Method Summary

Modifier and Type	Method and Description
LatencyPercentileMapStat	computeInterval(Stat<String> base) Creates a new map that contains entries that represent the interval for all keys that appear in both maps.
LatencyPercentileMapStat	copy() Returns a copy of this statistic.
LatencyPercentile	createStat(String key) Creates, stores, and returns a new stat for the specified key.
void	negate() Negate the value.

Methods inherited from class com.sleepycat.je.utilint.MapStat

add, clear, copyAndClear, get, getFormattedValue, getMap, isNotSet, removeStat, set

Methods inherited from class com.sleepycat.je.utilint.Stat

copyAndAdd, getDefinition, toString, toStringVerbose

Methods inherited from class java.lang.Object

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

Constructor Detail

LatencyPercentileMapStat

public LatencyPercentileMapStat(StatGroup group,
                                StatDefinition definition,
                                float percentile)

Creates an instance of this class using the default maximum for tracking latency values of . The definition type must be INCREMENTAL.

Parameters:

group - the owning group

definition - the associated definition

percentile - the percentile latency to report as a ratio between 0.0 and 1.0

Throws:

IllegalArgumentException - if the stat definition type is not INCREMENTAL, the percentile is less than 0.0 or greater than 1.0 or maxTrackedLatencyMillis is less than 0

LatencyPercentileMapStat

public LatencyPercentileMapStat(StatGroup group,
                                StatDefinition definition,
                                float percentile,
                                int maxTrackedLatencyMillis)

Creates an instance of this class. The definition type must be INCREMENTAL.

Parameters:

group - the owning group

definition - the associated definition

percentile - the percentile latency to report as a ratio between 0.0 and 1.0

maxTrackedLatencyMillis - the maximum for tracking latency values

Throws:

IllegalArgumentException - if the stat definition type is not INCREMENTAL, the percentile is less than 0.0 or greater than 1.0 or maxTrackedLatencyMillis is less than 0

Method Detail

createStat

public LatencyPercentile createStat(String key)

Creates, stores, and returns a new stat for the specified key.

Parameters:

key - the key

Returns:

the new stat

copy

public LatencyPercentileMapStat copy()

Description copied from class: BaseStat

Returns a copy of this statistic.

Overrides:

copy in class Stat<String>

Returns:

a copy

computeInterval

public LatencyPercentileMapStat computeInterval(Stat<String> base)

Creates a new map that contains entries that represent the interval for all keys that appear in both maps. The base argument must be a LatencyPercentileMapStat.

Specified by:

computeInterval in class Stat<String>

negate

public void negate()

Description copied from class: Stat

Negate the value.

Specified by:

negate in class Stat<String>