content: /*
   * Copyright 1999-2020 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.core.remote.core;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.remote.RemoteConstants;
  import com.alibaba.nacos.api.remote.request.RequestMeta;
  import com.alibaba.nacos.api.remote.request.ServerLoaderInfoRequest;
  import com.alibaba.nacos.api.remote.response.ServerLoaderInfoResponse;
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.core.remote.ConnectionManager;
  import com.alibaba.nacos.core.remote.RequestHandler;
  import com.alibaba.nacos.core.remote.grpc.InvokeSource;
  import com.alibaba.nacos.plugin.auth.constant.ApiType;
  import com.alibaba.nacos.plugin.auth.constant.SignType;
  import com.alibaba.nacos.sys.env.EnvUtil;
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Component;
  
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * request handler to handle server loader info.
   *
   * @author liuzunfei
   * @version $Id: ServerLoaderInfoRequestHandler.java, v 0.1 2020年09月03日 2:51 PM liuzunfei Exp $
   */
  @Component
  @InvokeSource(source = {RemoteConstants.LABEL_SOURCE_CLUSTER})
  public class ServerLoaderInfoRequestHandler extends RequestHandler<ServerLoaderInfoRequest, ServerLoaderInfoResponse> {
      
      @Autowired
      private ConnectionManager connectionManager;
      
      @Override
      @Secured(resource = "serverLoader", signType = SignType.SPECIFIED, apiType = ApiType.INNER_API)
      public ServerLoaderInfoResponse handle(ServerLoaderInfoRequest request, RequestMeta meta) throws NacosException {
          ServerLoaderInfoResponse serverLoaderInfoResponse = new ServerLoaderInfoResponse();
          serverLoaderInfoResponse.putMetricsValue("conCount", String.valueOf(connectionManager.currentClientsCount()));
          Map<String, String> filter = new HashMap<>(2);
          filter.put(RemoteConstants.LABEL_SOURCE, RemoteConstants.LABEL_SOURCE_SDK);
          serverLoaderInfoResponse
                  .putMetricsValue("sdkConCount", String.valueOf(connectionManager.currentClientsCount(filter)));
          serverLoaderInfoResponse.putMetricsValue("load", String.valueOf(EnvUtil.getLoad()));
          serverLoaderInfoResponse.putMetricsValue("cpu", String.valueOf(EnvUtil.getCpu()));
          
          return serverLoaderInfoResponse;
      }
      
  }
  