Package com.yahoo.vespa.streamingvisitors.tracing

Class ProbabilisticSampleRate

java.lang.Object

com.yahoo.vespa.streamingvisitors.tracing.ProbabilisticSampleRate

All Implemented Interfaces:

SamplingStrategy

public class ProbabilisticSampleRate
extends java.lang.Object
implements SamplingStrategy

Simple implementation of OpenCensus algorithm for probabilistic rate limiting as outlined in https://github.com/census-instrumentation/opencensus-specs/blob/master/trace/Sampling.md

Constructor Summary

Constructors

Constructor	Description
ProbabilisticSampleRate(MonotonicNanoClock nanoClock, java.util.function.Supplier<java.util.Random> randomSupplier, double desiredSamplesPerSec)

Method Summary

Modifier and Type	Method	Description
boolean	shouldSample()
static ProbabilisticSampleRate	withSystemDefaults(double desiredSamplesPerSec)

Methods inherited from class java.lang.Object

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

Constructor Detail

ProbabilisticSampleRate

public ProbabilisticSampleRate(MonotonicNanoClock nanoClock,
                               java.util.function.Supplier<java.util.Random> randomSupplier,
                               double desiredSamplesPerSec)

Method Detail

withSystemDefaults

public static ProbabilisticSampleRate withSystemDefaults(double desiredSamplesPerSec)

shouldSample

public boolean shouldSample()

Specified by:

shouldSample in interface SamplingStrategy