content: /*
   * Copyright 2013-2023 the original author or authors.
   *
   * 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
   *
   *      https://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.cloud.examples.example;
  
  import java.util.concurrent.Executor;
  import java.util.concurrent.Executors;
  
  
  import com.alibaba.cloud.nacos.NacosConfigManager;
  import com.alibaba.nacos.api.config.ConfigService;
  import com.alibaba.nacos.api.config.listener.Listener;
  import com.alibaba.nacos.api.exception.NacosException;
  import jakarta.annotation.PostConstruct;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.stereotype.Component;
  
  /**
   * Configuration listener example.
   *
   * @author lixiaoshuang
   */
  @Component
  public class ConfigListenerExample {
  
  	Logger logger = LoggerFactory.getLogger(ConfigListenerExample.class);
  
  	/**
  	 * Nacos dataId.
  	 */
  	public static final String DATA_ID = "nacos-config-example.properties";
  
  	/**
  	 * Nacos group.
  	 */
  	public static final String GROUP = "DEFAULT_GROUP";
  
  	@Autowired
  	private NacosConfigManager nacosConfigManager;
  
  	@PostConstruct
  	public void init() throws NacosException {
  		ConfigService configService = nacosConfigManager.getConfigService();
  
  		configService.addListener(DATA_ID, GROUP, new Listener() {
  			@Override
  			public Executor getExecutor() {
  				return Executors.newSingleThreadExecutor();
  			}
  
  			@Override
  			public void receiveConfigInfo(String configInfo) {
  				logger.info("[dataId]:[" + DATA_ID + "],Configuration changed to:"
  						+ configInfo);
  			}
  		});
  	}
  
  }
  