content: /*
   * Copyright 1999-2018 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.config.server.controller;
  
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.common.utils.CollectionUtils;
  import com.alibaba.nacos.common.utils.NamespaceUtil;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.config.server.constant.Constants;
  import com.alibaba.nacos.config.server.model.SampleResult;
  import com.alibaba.nacos.config.server.paramcheck.ConfigDefaultHttpParamExtractor;
  import com.alibaba.nacos.config.server.remote.ConfigChangeListenContext;
  import com.alibaba.nacos.config.server.service.LongPollingService;
  import com.alibaba.nacos.config.server.utils.GroupKey2;
  import com.alibaba.nacos.core.controller.compatibility.Compatibility;
  import com.alibaba.nacos.core.paramcheck.ExtractorManager;
  import com.alibaba.nacos.core.remote.Connection;
  import com.alibaba.nacos.core.remote.ConnectionManager;
  import com.alibaba.nacos.plugin.auth.constant.ApiType;
  import com.alibaba.nacos.plugin.auth.constant.SignType;
  import jakarta.servlet.http.HttpServletRequest;
  import jakarta.servlet.http.HttpServletResponse;
  import org.springframework.ui.ModelMap;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  import org.springframework.web.bind.annotation.RestController;
  
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * Controller for other node notification.
   *
   * @author boyan
   * @date 2010-5-7
   */
  @RestController
  @RequestMapping(Constants.COMMUNICATION_CONTROLLER_PATH)
  @ExtractorManager.Extractor(httpExtractor = ConfigDefaultHttpParamExtractor.class)
  @Deprecated
  public class CommunicationController {
      
      private final LongPollingService longPollingService;
      
      private final ConfigChangeListenContext configChangeListenContext;
      
      private final ConnectionManager connectionManager;
      
      public CommunicationController(LongPollingService longPollingService,
              ConfigChangeListenContext configChangeListenContext, ConnectionManager connectionManager) {
          this.longPollingService = longPollingService;
          this.configChangeListenContext = configChangeListenContext;
          this.connectionManager = connectionManager;
      }
      
      /**
       * Get client config information of subscriber in local machine.
       */
      @GetMapping("/configWatchers")
      @Compatibility(apiType = ApiType.INNER_API)
      @Secured(signType = SignType.CONFIG, apiType = ApiType.INNER_API)
      public SampleResult getSubClientConfig(@RequestParam("dataId") String dataId, @RequestParam("group") String group,
              @RequestParam(value = "tenant", required = false) String tenant, ModelMap modelMap) {
          group = StringUtils.isBlank(group) ? Constants.DEFAULT_GROUP : group;
          tenant = NamespaceUtil.processNamespaceParameter(tenant);
          // long polling listeners.
          SampleResult result = longPollingService.getCollectSubscribleInfo(dataId, group, tenant);
          // rpc listeners.
          String groupKey = GroupKey2.getKey(dataId, group, tenant);
          Set<String> listenersClients = configChangeListenContext.getListeners(groupKey);
          if (CollectionUtils.isEmpty(listenersClients)) {
              return result;
          }
          Map<String, String> listenersGroupkeyStatus = new HashMap<>(listenersClients.size(), 1);
          for (String connectionId : listenersClients) {
              Connection client = connectionManager.getConnection(connectionId);
              if (client != null) {
                  String md5 = configChangeListenContext.getListenKeyMd5(connectionId, groupKey);
                  if (md5 != null) {
                      listenersGroupkeyStatus.put(client.getMetaInfo().getClientIp(), md5);
                  }
              }
          }
          result.getLisentersGroupkeyStatus().putAll(listenersGroupkeyStatus);
          return result;
      }
      
      /**
       * Get client config listener lists of subscriber in local machine.
       */
      @GetMapping("/watcherConfigs")
      @Compatibility(apiType = ApiType.INNER_API)
      @Secured(signType = SignType.CONFIG, apiType = ApiType.INNER_API)
      public SampleResult getSubClientConfigByIp(HttpServletRequest request, HttpServletResponse response,
              @RequestParam("ip") String ip, ModelMap modelMap) {
          
          SampleResult result = longPollingService.getCollectSubscribleInfoByIp(ip);
          List<Connection> connectionsByIp = connectionManager.getConnectionByIp(ip);
          for (Connection connectionByIp : connectionsByIp) {
              Map<String, String> listenKeys = configChangeListenContext.getListenKeys(
                      connectionByIp.getMetaInfo().getConnectionId());
              if (listenKeys != null) {
                  result.getLisentersGroupkeyStatus().putAll(listenKeys);
              }
          }
          return result;
          
      }
      
  }
  