/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.navercorp.pinpoint.common.annotations;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* Copy from hadoop-annotations <br>
* https://github.com/apache/hadoop/tree/trunk/hadoop-common-project/hadoop-annotations/src/main/java/org/apache/hadoop/classification <br><br>
*
* Annotation to inform users of how much to rely on a particular package,
* class or method not changing over time. Currently the stability can be
* {@link Stable}, {@link Evolving} or {@link Unstable}. <br>
*
* <ul><li>All classes that are annotated with {@link InterfaceAudience.Public} or
* {@link InterfaceAudience.LimitedPrivate} must have InterfaceStability annotation. </li>
* <li>Classes that are {@link InterfaceAudience.Private} are to be considered unstable unless
* a different InterfaceStability annotation states otherwise.</li>
* <li>Incompatible changes must not be made to classes marked as stable.</li>
* </ul>
*/
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class InterfaceStability {
/**
* Can evolve while retaining compatibility for minor release boundaries.;
* can break compatibility only at major release (ie. at m.0).
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface Stable {};
/**
* Evolving, but can break compatibility at minor release (i.e. m.x)
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface Evolving {};
/**
* No guarantee is provided as to reliability or stability across any
* level of release granularity.
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
public @interface Unstable {};
}