/*
* Copyright 2012-2013 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.actuate.metrics.rich;
/**
* A basic set of read operations for {@link RichGauge} instances.
*
* @author Dave Syer
*/
public interface RichGaugeReader {
/**
* Find a single instance of a rich gauge by name.
* @param name the name of the gauge
* @return a rich gauge value
*/
RichGauge findOne(String name);
/**
* Find all instances of rich gauge known to this reader.
* @return all instances known to this reader
*/
Iterable<RichGauge> findAll();
/**
* Return the number of gauge values available.
* @return the number of values
*/
long count();
}