com.wavefront.sdk.entities.tracing.sampling

Class MinConditionalSampler

java.lang.Object

com.wavefront.sdk.entities.tracing.sampling.CompositeSampler

com.wavefront.sdk.entities.tracing.sampling.MinConditionalSampler

All Implemented Interfaces:

Sampler

public class MinConditionalSampler
extends CompositeSampler

This an extension of CompositeSampler that runs a pre-check to determine if a span is eligible for sampling. This implementation needs span to meet the minimum duration threshold to be considered for sampling, otherwise span is discarded.

Version:

$Id: $Id

Author:

Anil Kodali (akodali@vmware.com)

Constructor Summary

Constructors

Constructor and Description
MinConditionalSampler(java.util.List<Sampler> samplers, long minimumDurationMillis) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	sample(java.lang.String operationName, long traceId, long duration) Gets whether a span should be allowed given it's operation and trace id.
void	setMinimumDurationMillis(long minimumDurationMillis) Sets the minimum duration for this sampler.

Methods inherited from class com.wavefront.sdk.entities.tracing.sampling.CompositeSampler

isEarly

Methods inherited from class java.lang.Object

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

Constructor Detail

MinConditionalSampler

public MinConditionalSampler(java.util.List<Sampler> samplers,
                             long minimumDurationMillis)

Constructor.

Parameters:

samplers - The list of samplers to delegate to if the minimum duration condition is met.

minimumDurationMillis - The minimum duration in milliseconds. Spans with durations lesser than this are discarded.

Method Detail

sample

public boolean sample(java.lang.String operationName,
                      long traceId,
                      long duration)

Gets whether a span should be allowed given it's operation and trace id.

Specified by:

sample in interface Sampler

Overrides:

sample in class CompositeSampler

Parameters:

operationName - The operation name of the span

traceId - The traceId of the span

duration - The duration of the span in milliseconds

Returns:

true if the span should be allowed, false otherwise

setMinimumDurationMillis

public void setMinimumDurationMillis(long minimumDurationMillis)

Sets the minimum duration for this sampler.

Parameters:

minimumDurationMillis - The minimum duration in milliseconds.