content: /*
   * Copyright 1999-2025 Alibaba Group Holding 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 com.alibaba.nacos.console.cluster;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.common.notify.Event;
  import com.alibaba.nacos.common.notify.NotifyCenter;
  import com.alibaba.nacos.console.handler.impl.remote.EnabledRemoteHandler;
  import com.alibaba.nacos.core.cluster.Member;
  import com.alibaba.nacos.core.cluster.MemberLookup;
  import com.alibaba.nacos.core.cluster.MembersChangeEvent;
  import com.alibaba.nacos.core.cluster.NacosMemberManager;
  import com.alibaba.nacos.core.cluster.lookup.LookupFactory;
  import com.alibaba.nacos.core.utils.Loggers;
  import org.springframework.stereotype.Service;
  
  import javax.annotation.PostConstruct;
  import java.util.Collection;
  import java.util.HashSet;
  import java.util.concurrent.ConcurrentSkipListMap;
  
  /**
   * Nacos remote server members manager. Only working on console mode to keep and update the remote server members.
   *
   * @author xiweng.yy
   */
  @Service
  @EnabledRemoteHandler
  public class RemoteServerMemberManager implements NacosMemberManager {
      
      /**
       * Nacos remote servers cluster node list.
       */
      private volatile ConcurrentSkipListMap<String, Member> serverList;
      
      /**
       * Addressing pattern instances.
       */
      private MemberLookup lookup;
      
      public RemoteServerMemberManager() {
          this.serverList = new ConcurrentSkipListMap<>();
      }
      
      @PostConstruct
      public void init() throws NacosException {
          initAndStartLookup();
      }
      
      private void initAndStartLookup() throws NacosException {
          this.lookup = LookupFactory.createLookUp();
          this.lookup.injectMemberManager(this);
          this.lookup.start();
      }
      
      @Override
      public synchronized boolean memberChange(Collection<Member> members) {
          ConcurrentSkipListMap<String, Member> newServerList = new ConcurrentSkipListMap<>();
          for (Member each : members) {
              newServerList.put(each.getAddress(), each);
          }
          Loggers.CLUSTER.info("[serverlist] nacos remote server members changed to : {}", newServerList);
          this.serverList = newServerList;
          Event event = MembersChangeEvent.builder().members(members).build();
          NotifyCenter.publishEvent(event);
          return true;
      }
      
      @Override
      public Collection<Member> allMembers() {
          return new HashSet<>(serverList.values());
      }
  }
  