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.naming.misc;
  
  import com.alibaba.nacos.core.config.AbstractDynamicConfig;
  import com.alibaba.nacos.naming.constants.ClientConstants;
  import com.alibaba.nacos.sys.env.EnvUtil;
  
  /**
   * Naming client config.
   *
   * @author xiweng.yy
   */
  public class ClientConfig extends AbstractDynamicConfig {
      
      private static final String NAMING_CLIENT = "NamingClient";
      
      private static final ClientConfig INSTANCE = new ClientConfig();
      
      private long clientExpiredTime = ClientConstants.DEFAULT_CLIENT_EXPIRED_TIME;
      
      private ClientConfig() {
          super(NAMING_CLIENT);
          resetConfig();
      }
      
      public static ClientConfig getInstance() {
          return INSTANCE;
      }
      
      public long getClientExpiredTime() {
          return clientExpiredTime;
      }
      
      public void setClientExpiredTime(long clientExpiredTime) {
          this.clientExpiredTime = clientExpiredTime;
      }
      
      @Override
      protected void getConfigFromEnv() {
          clientExpiredTime = EnvUtil.getProperty(ClientConstants.CLIENT_EXPIRED_TIME_CONFIG_KEY, Long.class,
                  ClientConstants.DEFAULT_CLIENT_EXPIRED_TIME);
      }
      
      @Override
      protected String printConfig() {
          return "ClientConfig{" + "clientExpiredTime=" + clientExpiredTime + '}';
      }
  }
  