Package io.github.resilience4j.core.metrics

Class PackedAggregation

java.lang.Object

io.github.resilience4j.core.metrics.PackedAggregation

All Implemented Interfaces:

CumulativeMeasurement, MeasurementData

public class PackedAggregation
extends Object
implements CumulativeMeasurement

A measurement implementation used in sliding windows to track the total duration and the number of calls in the window, along with the duration and number of calls of the current entry/bucket.

This implementation has the advantage of being cache friendly, benefiting from cache locality when counting/discarding the tracked metrics.

Besides this, metrics can also be quickly cloned, which is important for the lock-free algorithms which are operating with immutable objects.

Constructor Summary

Constructors

Constructor	Description
PackedAggregation()
PackedAggregation(long[] durations, int[] counts)

Method Summary

Modifier and Type	Method	Description
int	getNumberOfCalls()	Returns the total number of all calls in this measurement.
int	getNumberOfFailedCalls()	Returns the number of failed calls in this measurement.
int	getNumberOfSlowCalls()	Returns the number of calls in this measurement which were slower than a certain threshold.
int	getNumberOfSlowFailedCalls()	Returns the number of failed calls in this measurement which were slower than a certain threshold.
long	getTotalDurationInMillis()	Returns the total duration of all calls in this measurement.
void	record(long duration, TimeUnit durationUnit, Metrics.Outcome outcome)	Records a call duration and its outcome.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

PackedAggregation

public PackedAggregation()

PackedAggregation

public PackedAggregation(long[] durations,
 int[] counts)

Method Details

record

public void record(long duration,
 TimeUnit durationUnit,
 Metrics.Outcome outcome)

Description copied from interface: CumulativeMeasurement

Records a call duration and its outcome.

Specified by:

record in interface CumulativeMeasurement

Parameters:

duration - the call duration

durationUnit - the time unit of the call duration

outcome - the outcome of the call

getTotalDurationInMillis

public long getTotalDurationInMillis()

Description copied from interface: MeasurementData

Returns the total duration of all calls in this measurement.

Specified by:

getTotalDurationInMillis in interface MeasurementData

Returns:

the total duration of all calls

getNumberOfSlowCalls

public int getNumberOfSlowCalls()

Description copied from interface: MeasurementData

Returns the number of calls in this measurement which were slower than a certain threshold.

Specified by:

getNumberOfSlowCalls in interface MeasurementData

Returns:

the number of calls which were slower than a certain threshold

getNumberOfSlowFailedCalls

public int getNumberOfSlowFailedCalls()

Description copied from interface: MeasurementData

Returns the number of failed calls in this measurement which were slower than a certain threshold.

Specified by:

getNumberOfSlowFailedCalls in interface MeasurementData

Returns:

the number of failed calls which were slower than a certain threshold

getNumberOfFailedCalls

public int getNumberOfFailedCalls()

Description copied from interface: MeasurementData

Returns the number of failed calls in this measurement.

Specified by:

getNumberOfFailedCalls in interface MeasurementData

Returns:

the number of failed calls

getNumberOfCalls

public int getNumberOfCalls()

Description copied from interface: MeasurementData

Returns the total number of all calls in this measurement.

Specified by:

getNumberOfCalls in interface MeasurementData

Returns:

the total number of all calls

toString

public String toString()

Overrides:

toString in class Object