package com.muyu.mqtt.config;

import com.muyu.mqtt.service.MqttService;
import lombok.extern.log4j.Log4j2;
import org.eclipse.paho.client.mqttv3.MqttClient;
import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.UUID;

/**
 * @author DongZl
 * @description: Mqtt配置
 * @Date 2023-11-24 下午 02:06
 */
@Log4j2
//@Configuration
public class MqttConfig {

    @Bean
    public MqttClient initClient(MqttProper mqttProper, MqttService mqttService){
        try {
            log.info("mqtt服务器初始化开始");
            long startTime = System.currentTimeMillis();
            MqttClient client = new MqttClient(mqttProper.getBroker(),
                    UUID.randomUUID().toString(),
                    new MemoryPersistence());
            // 连接参数
            MqttConnectOptions options = new MqttConnectOptions();
            options.setConnectionTimeout(60);
            options.setKeepAliveInterval(60);
            log.info("mqtt服务器初始化结束， 耗时：[{}MS]", System.currentTimeMillis() - startTime);
            client.connect(options);
            client.setCallback(mqttService);
            client.subscribe(mqttProper.getTopic(), 0);
            return client;
        }catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}