package io.dropwizard.metrics;
/**
* A gauge metric is an instantaneous reading of a particular value. To instrument a queue's depth,
* for example:<br>
* <pre><code>
* final Queue<String> queue = new ConcurrentLinkedQueue<String>();
* final Gauge<Integer> queueDepth = new Gauge<Integer>() {
* public Integer getValue() {
* return queue.size();
* }
* };
* </code></pre>
*
* @param <T> the type of the metric's value
*/
public interface Gauge<T> extends Metric {
/**
* Returns the metric's current value.
*
* @return the metric's current value
*/
T getValue();
}