org.eclipse.microprofile.metrics

Interface Gauge<T>

Type Parameters:

T - the type of the metric's value

All Superinterfaces:

Metric

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface Gauge<T>
extends Metric

A gauge metric is an instantaneous reading of a particular value. To instrument a queue's depth, for example:

 final Queue<String> queue = new ConcurrentLinkedQueue<String>();
 final Gauge<Integer> queueDepth = new Gauge<Integer>() {
     public Integer getValue() {
         return queue.size();
     }
 };
 

Method Summary

Modifier and Type	Method and Description
T	getValue() Returns the metric's current value.

Method Detail

getValue

T getValue()

Returns the metric's current value.

Returns:

the metric's current value