org.springframework.cloud.sleuth.sampler

Class PercentageBasedSampler

java.lang.Object

org.springframework.cloud.sleuth.sampler.PercentageBasedSampler

All Implemented Interfaces:

Sampler

public class PercentageBasedSampler
extends Object
implements Sampler

This sampler is appropriate for low-traffic instrumentation (ex servers that each receive <100K requests), or those who do not provision random trace ids. It not appropriate for collectors as the sampling decision isn't idempotent (consistent based on trace id).

Implementation

Taken from Zipkin project

This counts to see how many out of 100 traces should be retained. This means that it is accurate in units of 100 traces.

Since:

1.0.0

Author:

Marcin Grzejszczak, Adrian Cole

Constructor Summary

Constructors

Constructor and Description
PercentageBasedSampler(SamplerProperties configuration)

Method Summary

Modifier and Type	Method and Description
boolean	isSampled(Span currentSpan)

Methods inherited from class java.lang.Object

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

Constructor Detail

PercentageBasedSampler

public PercentageBasedSampler(SamplerProperties configuration)

Method Detail

isSampled

public boolean isSampled(Span currentSpan)

Specified by:

isSampled in interface Sampler

Returns:

true if the span is not null and should be exported to the tracing system