com.wavefront.sdk.entities.tracing.sampling

Interface Sampler

All Known Implementing Classes:

CompositeSampler, ConstantSampler, DurationSampler, MinConditionalSampler, RateSampler

public interface Sampler

The interface for sampling tracing spans.

Version:

$Id: $Id

Author:

Vikram Raman (vikram@wavefront.com)

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.

Method Detail

sample

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

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

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

boolean isEarly()

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

Returns:

true for early sampling, false otherwise