GeoHazardMonitor/business-service/src/main/java/com/ozs/service/utils/PublishClient.java

package com.ozs.service.utils;

import com.alibaba.fastjson2.JSON;
import com.ozs.common.utils.sign.Md5Utils;
import com.ozs.service.entity.vo.BaseCameraVersionVo;
import com.ozs.service.entity.vo.Data;
import com.ozs.service.entity.vo.Heartbeat;
import com.ozs.service.entity.vo.UpdateDeviceSn;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.MqttDeliveryToken;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.MqttMessage;
import org.eclipse.paho.client.mqttv3.MqttPersistenceException;
import org.eclipse.paho.client.mqttv3.MqttTopic;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.springframework.beans.factory.annotation.Value;

import java.util.UUID;


/**
 * 发布客户端
 *
 * @author Administrator
 */
public class PublishClient {
    /**
     * mqtt服务器地址
     */
    public static  final String HOST="tcp://124.70.58.209:1883";
    /**
     * 主题
     */
    private final String topic;
    /**
     * 客户端实例
     */
    private final MqttClient client;
    /**
     * 主题实例
     */
    private MqttTopic topic11;
    private static final String USER_NAME = "guest";
    private static final String PASS_WORD = "guest";
    private MqttMessage message;

    /**
     * 初始化客户端实例
     * @param topic
     * @param clientId
     * @throws MqttException
     */
    public PublishClient(String topic,String clientId) throws MqttException {
        /**
         * mqtt 客户机ID
         * heart_DEVICESN
         */
        this.topic=topic;
        /**
         * MemoryPersistence设置clientId的保存形式，默认为以内存保存
         */
        client = new MqttClient(HOST, clientId, new MemoryPersistence());
        connect();
    }

    /**
     * 连接服务器
     */
    private void connect() {
        /**
         * 连接配置
         */
        MqttConnectOptions options = new MqttConnectOptions();
        /**
         * 不保存，每次重启新client
         */
        options.setCleanSession(true);
        options.setUserName(USER_NAME);
        options.setPassword(PASS_WORD.toCharArray());
        /**
         * 设置超时时间
         */
        options.setConnectionTimeout(10);
        /**
         * 设置会话心跳时间
         */
        options.setKeepAliveInterval(20);
        try {
            /**
             * 设置发布回调
             */
            client.setCallback(new PublishCallback());
            client.connect(options);
            topic11 = client.getTopic(topic);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 发布
     * @param topic
     * @param message
     * @throws MqttPersistenceException
     * @throws MqttException
     */
    public void publish(MqttTopic topic, MqttMessage message) throws MqttPersistenceException,
            MqttException {
        MqttDeliveryToken token = topic.publish(message);
        token.waitForCompletion();
        System.out.println("message is published completely! " + token.isComplete());
    }
    
    public static void pull(String sign,String deviceSn) throws MqttException, InterruptedException {
        /**
         * 发布客户端
         */
        PublishClient server = new PublishClient("heart_"+deviceSn,"heart_"+deviceSn);
        Heartbeat test = new Heartbeat();
        test.setName("HeartResponse");
        Data data = new Data();
        data.setAlarm(0);
        data.setStream(0);
        test.setData(data);
        test.setCode(200);
        test.setSign(sign);
        String s = JSON.toJSONString(test);
        server.message = new MqttMessage();
        /**
         * 保证消息能到达一次
         */
        server.message.setQos(1);
        /**
         * 消息保留
         */
//        server.message.setRetained(false);
        /**
         * 消息内容
         */
        server.message.setPayload(s.getBytes());
        /**
         * 发布
         */
        server.publish(server.topic11, server.message);
    }

    public static void updateDeviceSn(BaseCameraVersionVo baseCameraVersionVo){
        /**
         * 发布客户端
         */
        for (String code : baseCameraVersionVo.getCameraCodeList()) {
            try {
                PublishClient server = new PublishClient("update_" + code, "update_" + code);
                UpdateDeviceSn updateDeviceSn = new UpdateDeviceSn();
                updateDeviceSn.setName("UpdateRequest");
                updateDeviceSn.setType(Integer.valueOf(baseCameraVersionVo.getUpgradeType()));
                updateDeviceSn.setMd5(baseCameraVersionVo.getMd5());
                updateDeviceSn.setSign(UUID.randomUUID().toString());
                updateDeviceSn.setUrl(baseCameraVersionVo.getVersionAddress());
                String s = JSON.toJSONString(updateDeviceSn);
                server.message = new MqttMessage();
                /**
                 * 保证消息能到达一次
                 */
                server.message.setQos(1);
                /**
                 * 消息保留
                 */
//                server.message.setRetained(false);
                /**
                 * 消息内容
                 */
                server.message.setPayload(s.getBytes());
                /**
                 * 发布
                 */
                server.publish(server.topic11, server.message);
            } catch (MqttException e) {
                System.out.println(e.getMessage());
            }
        }
    }
}