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.example;
  
  import java.util.Properties;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.naming.NamingFactory;
  import com.alibaba.nacos.api.naming.NamingService;
  import com.alibaba.nacos.api.naming.listener.Event;
  import com.alibaba.nacos.api.naming.listener.EventListener;
  import com.alibaba.nacos.api.naming.listener.NamingEvent;
  
  /**
   * @author nkorange
   */
  public class NamingExample {
  
      public static void main(String[] args) throws NacosException {
  
          Properties properties = new Properties();
          properties.setProperty("serverAddr", System.getProperty("serverAddr"));
          properties.setProperty("namespace", System.getProperty("namespace"));
  
          NamingService naming = NamingFactory.createNamingService(properties);
  
          naming.registerInstance("nacos.test.3", "11.11.11.11", 8888, "TEST1");
  
          naming.registerInstance("nacos.test.3", "2.2.2.2", 9999, "DEFAULT");
  
          System.out.println(naming.getAllInstances("nacos.test.3"));
  
          naming.deregisterInstance("nacos.test.3", "2.2.2.2", 9999, "DEFAULT");
  
          System.out.println(naming.getAllInstances("nacos.test.3"));
  
          naming.subscribe("nacos.test.3", new EventListener() {
              @Override
              public void onEvent(Event event) {
                  System.out.println(((NamingEvent)event).getServiceName());
                  System.out.println(((NamingEvent)event).getInstances());
              }
          });
      }
  }
  