com.wavefront.sdk.entities.tracing.sampling

Class CompositeSampler

java.lang.Object

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

All Implemented Interfaces:

Sampler

Direct Known Subclasses:

MinConditionalSampler

public class CompositeSampler
extends java.lang.Object
implements Sampler

Sampler that delegates to multiple other samplers for sampling. The sampling decision is true if any of the delegate samplers allow the span.

Version:

$Id: $Id

Author:

Vikram Raman (vikram@wavefront.com)

Constructor Summary

Constructors

Constructor and Description
CompositeSampler(java.util.List<Sampler> samplers) Constructor for CompositeSampler.

Method Summary

Modifier and Type	Method and Description
boolean	isEarly() Whether this sampler performs early or head based sampling.
boolean	sample(java.lang.String operationName, long traceId, long duration) Gets whether a span should be allowed given it's operation and trace id.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeSampler

public CompositeSampler(java.util.List<Sampler> samplers)

Constructor for CompositeSampler.

Parameters:

samplers - a List object

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

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

isEarly

public boolean isEarly()

Whether this sampler performs early or head based sampling. Offers a non-binding hint for clients using the sampler.

Specified by:

isEarly in interface Sampler

Returns:

true for early sampling, false otherwise