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.client.config.impl;
  
  import com.alibaba.nacos.api.config.remote.request.ConfigFuzzyWatchChangeNotifyRequest;
  import com.alibaba.nacos.api.config.remote.request.ConfigFuzzyWatchSyncRequest;
  import com.alibaba.nacos.api.remote.request.Request;
  import com.alibaba.nacos.api.remote.response.Response;
  import com.alibaba.nacos.common.remote.client.Connection;
  import com.alibaba.nacos.common.remote.client.ServerRequestHandler;
  
  /**
   * fuzzy watch request from server .
   * @author shiyiyue
   */
  public class ClientFuzzyWatchNotifyRequestHandler implements ServerRequestHandler {
      
      ConfigFuzzyWatchGroupKeyHolder configFuzzyWatchGroupKeyHolder;
      
      public ClientFuzzyWatchNotifyRequestHandler(ConfigFuzzyWatchGroupKeyHolder configFuzzyWatchGroupKeyHolder) {
          
          this.configFuzzyWatchGroupKeyHolder = configFuzzyWatchGroupKeyHolder;
      }
      
      @Override
      public Response requestReply(Request request, Connection connection) {
          //fuzzy watch diff reconciliation sync
          if (request instanceof ConfigFuzzyWatchSyncRequest) {
              return configFuzzyWatchGroupKeyHolder.handleFuzzyWatchSyncNotifyRequest(
                      (ConfigFuzzyWatchSyncRequest) request);
          }
          //fuzzy watch changed notify for a single config. include config changed or config delete.
          if (request instanceof ConfigFuzzyWatchChangeNotifyRequest) {
              return configFuzzyWatchGroupKeyHolder.handlerFuzzyWatchChangeNotifyRequest(
                      (ConfigFuzzyWatchChangeNotifyRequest) request);
          }
          return null;
      }
  }
  