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.druid.support.http;
  
  import com.alibaba.druid.support.monitor.MonitorClient;
  
  import javax.servlet.ServletContextEvent;
  import javax.servlet.ServletContextListener;
  
  public class MonitorClientContextListener implements ServletContextListener {
      private MonitorClient client;
  
      @Override
      public void contextInitialized(ServletContextEvent event) {
          client = new MonitorClient();
          client.start();
      }
  
      @Override
      public void contextDestroyed(ServletContextEvent event) {
          if (client != null) {
              client.stop();
              this.client = null;
          }
      }
  
  }
  