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/*
* Copyright 1999-2011 Alibaba Group.
*
* 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.alibaba.dubbo.registry;
import com.alibaba.dubbo.common.URL;
import com.alibaba.dubbo.common.extension.Adaptive;
import com.alibaba.dubbo.common.extension.SPI;
/**
* RegistryFactory. (SPI, Singleton, ThreadSafe)
*
* @see com.alibaba.dubbo.registry.support.AbstractRegistryFactory
* @author william.liangf
*/
@SPI("dubbo")
public interface RegistryFactory {
/**
* 连接注册中心.
*
* 连接注册中心需处理契约：
* 1. 当设置check=false时表示不检查连接，否则在连接不上时抛出异常。
* 2. 支持URL上的username:password权限认证。
* 3. 支持backup=10.20.153.10备选注册中心集群地址。
* 4. 支持file=registry.cache本地磁盘文件缓存。
* 5. 支持timeout=1000请求超时设置。
* 6. 支持session=60000会话超时或过期设置。
*
* @param url 注册中心地址，不允许为空
* @return 注册中心引用，总不返回空
*/
@Adaptive({"protocol"})
Registry getRegistry(URL url);
}