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Spring integration for Coda Hale's Metrics Library
/**
* Copyright (C) 2012 Ryan W Tenney ([email protected])
*
* 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 com.ryantenney.metrics.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* An annotation requesting that a metric be injected or registered.
*
*
* Given a field like this:
*
* {@literal @}Metric
* public Histogram histogram;
*
*
* A meter of the field's type will be created and injected into Spring-managed beans after construction
* but before initialization. It will be up to the user to interact with the metric. This annotation
* can be used on fields of type Meter, Timer, Counter, and Histogram.
*
*
* This may also be used to register a metric, which is useful for creating a histogram with
* a custom Reservoir.
*
* {@literal @}Metric
* public Histogram uniformHistogram = new Histogram(new UniformReservoir());
*
*
*/
@Deprecated
@com.codahale.metrics.annotation.Metric
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface Metric {
/**
* The name of the metric.
*/
String name() default "";
/**
* If {@code true}, use the given name as an absolute name. If {@code false}, use the given name
* relative to the annotated class.
*/
boolean absolute() default false;
}