Package io.prometheus.client.exemplars

Interface CounterExemplarSampler

All Known Subinterfaces:

ExemplarSampler

All Known Implementing Classes:

DefaultExemplarSampler

public interface CounterExemplarSampler

Exemplar sampler for counter metrics.

Method Summary

Modifier and Type	Method	Description
Exemplar	sample(double increment, Exemplar previous)

Method Detail

sample

Exemplar sample(double increment,
                Exemplar previous)

Parameters:

increment - the value added to the counter on this event

previous - the previously sampled exemplar, or null if there is none.

Returns:

an Exemplar to be sampled, or null if the previous exemplar does not need to be updated. Returning null and returning previous is equivalent.