io.servicecomb.loadbalance.CseServerList Maven / Gradle / Ivy

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/*
 * Copyright 2017 Huawei Technologies Co., Ltd
 *
 * 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 io.servicecomb.loadbalance;

import java.util.List;

import com.netflix.loadbalancer.Server;
import com.netflix.loadbalancer.ServerList;

/**
 * 通过RegistryUtils查询服务器列表。 RegistryUtils本身具备缓存和刷新不可用服务器的功能，因此这里不需要进行列表缓存和状态检测。
 */
public class CseServerList implements ServerList {
    private ServerListCache serverListCache;

    public CseServerList(String appId, String microserviceName, String microserviceVersionRule,
            String transportName) {
        serverListCache = new ServerListCache(appId, microserviceName, microserviceVersionRule, transportName);
    }

    @Override
    public List getInitialListOfServers() {
        return serverListCache.getLatestEndpoints();
    }

    @Override
    public List getUpdatedListOfServers() {
        return getInitialListOfServers();
    }
}