/*
* Copyright 2008-2009 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.
*/
/**
* 优雅下线功能。
* <p>场景:当应用准备关闭下线,或者因为升级需要应用程序需要结束运行,但是远程服务消费者可能还在请求这台机器。
* <p>优雅下线,分为两个阶段。第一个阶段应用在下线的时候会通知注册中心,注册中心会讲准备下线的应用地址推送给其它服务消费者。
* 其次第二个阶段,应用本身要确保没有新的服务调用请求能够进来。这个软件包的功能就是来保证第二个阶段。
*/
package net.hasor.rsf.filters.online;