com.massa.mrules.extensions.monitoring.micrometer

Class TimeWindowStats

java.lang.Object

com.massa.mrules.extensions.monitoring.micrometer.TimeWindowStats

public class TimeWindowStats
extends Object

An implementation of a moving-window stats based on a configurable ring buffer. Currently exposed statistics are :

• Samples sum
• Samples count
• Samples mean
• Samples min
• Samples frequency (events / milliseconds)
• Time window's oldest event's age

Constructor Summary

Constructors

Constructor and Description
TimeWindowStats(io.micrometer.core.instrument.Clock clock, io.micrometer.core.instrument.distribution.DistributionStatisticConfig config) Constructor
TimeWindowStats(io.micrometer.core.instrument.Clock clock, long rotateFrequencyMillis, int bufferLength) Constructor

Method Summary

Modifier and Type	Method and Description
long	age()
long	count()
double	freq()
long	lastAge()
double	lastValue()
double	mean()
double	min()
void	record(double sample) Increments counter.
double	sum()

Methods inherited from class java.lang.Object

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

Constructor Detail

TimeWindowStats

public TimeWindowStats(io.micrometer.core.instrument.Clock clock,
                       io.micrometer.core.instrument.distribution.DistributionStatisticConfig config)

Constructor

Parameters:

clock -

config -

TimeWindowStats

public TimeWindowStats(io.micrometer.core.instrument.Clock clock,
                       long rotateFrequencyMillis,
                       int bufferLength)

Constructor

Parameters:

clock -

rotateFrequencyMillis -

bufferLength -

Method Detail

record

public void record(double sample)

Increments counter.

Parameters:

sample - Sample to record

count

public long count()

Returns:

event count on time window.

sum

public double sum()

Returns:

sum on time window.

min

public double min()

Returns:

min on time window.

mean

public double mean()

Returns:

mean on time window.

freq

public double freq()

Returns:

frequency (events / milliseconds) on time window.

age

public long age()

Returns:

age of the oldest time window's sample in milliseconds.

lastAge

public long lastAge()

Returns:

age of the last value recorded in milliseconds. -1 if no access recorded.

lastValue

public double lastValue()

Returns:

Last value recorded. -1 if no access recorded.