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;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.remote.Requester;
  import com.alibaba.nacos.api.remote.request.Request;
  
  import java.util.Map;
  
  /**
   * Connection.
   *
   * @author liuzunfei
   * @version $Id: Connection.java, v 0.1 2020年07月13日 7:08 PM liuzunfei Exp $
   */
  @SuppressWarnings("PMD.AbstractClassShouldStartWithAbstractNamingRule")
  public abstract class Connection implements Requester {
      
      private boolean traced = false;
      
      private Map<String, Boolean> abilityTable;
      
      private final ConnectionMeta metaInfo;
      
      public Connection(ConnectionMeta metaInfo) {
          this.metaInfo = metaInfo;
      }
      
      public Map<String, String> getLabels() {
          return metaInfo.getLabels();
      }
      
      public Map<String, String> getAppLabels() {
          return metaInfo.getAppLabels();
      }
      
      public boolean isTraced() {
          return traced;
      }
      
      public void setTraced(boolean traced) {
          this.traced = traced;
      }
      
      public void setAbilityTable(Map<String, Boolean> abilityTable) {
          this.abilityTable = abilityTable;
      }
      
      public Map<String, Boolean> getAbilityTable() {
          return this.abilityTable;
      }
      
      /**
       * check is connected.
       *
       * @return if connection or not,check the inner connection is active.
       */
      public abstract boolean isConnected();
      
      /**
       * Update last Active Time to now.
       */
      public void freshActiveTime() {
          metaInfo.setLastActiveTime(System.currentTimeMillis());
      }
      
      /**
       * Getter method for property <tt>metaInfo</tt>.
       *
       * @return property value of metaInfo
       */
      public ConnectionMeta getMetaInfo() {
          return metaInfo;
      }
      
      /**
       * Send request to remote.
       *
       * @param request request.
       * @throws NacosException nacos exception.
       */
      public abstract void sendRequestNoAck(Request request) throws NacosException;
      
      @Override
      public String toString() {
          return "Connection{" + "traced=" + traced + ", abilities=" + abilityTable + ", metaInfo=" + metaInfo + '}';
      }
  }
  
  