package com.doumee.core.mqtt.config;
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import com.doumee.config.SpringContextUtil;
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import com.doumee.core.constants.Constants;
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import com.doumee.core.mqtt.service.MqttPushCallback;
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import com.doumee.core.mqtt.service.MqttSubService;
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import com.doumee.core.mqtt.service.MqttToolService;
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import org.eclipse.paho.client.mqttv3.MqttClient;
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import org.eclipse.paho.client.mqttv3.MqttConnectOptions;
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import org.eclipse.paho.client.mqttv3.MqttException;
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import org.eclipse.paho.client.mqttv3.MqttTopic;
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import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;
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import org.springframework.beans.factory.annotation.Autowired;
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public class MqttClientInit {
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static MqttClient client;
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static MqttClient subClient;
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public static boolean isNeedReSub =false ;
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public static synchronized MqttClient getInstance(MqttConfig config ){
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if(client !=null){
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if(!client.isConnected()){
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try {
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client.reconnect();
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} catch (MqttException e) {
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throw new RuntimeException(e);
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}
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}
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return client;
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}
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try {
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// host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
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String clientId =config.getClientid() +config.getVersion();
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client = new org.eclipse.paho.client.mqttv3.MqttClient(config.getHost(), clientId,new MemoryPersistence());
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// MQTT的连接设置
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MqttConnectOptions options = new MqttConnectOptions();
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// 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，设置为true表示每次连接到服务器都以新的身份连接
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options.setCleanSession(false);
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// 设置连接的用户名
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options.setUserName(config.getUsername());
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// 设置连接的密码
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options.setPassword(config.getPassword().toCharArray());
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// 设置超时时间 单位为秒
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options.setConnectionTimeout(10);
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// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
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options.setKeepAliveInterval(20);
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//设置断开后重新连接
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options.setAutomaticReconnect(true);
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MqttTopic topic = client.getTopic(clientId+"_close");
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//遗嘱
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options.setWill(topic, "close".getBytes(), 1, true);
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client.connect(options);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return client;
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}
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public static synchronized MqttClient getSubInstance(MqttConfig config,MqttPushCallback callBack){
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if(subClient !=null){
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refreshClient();
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return subClient;
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}
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try {
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// host为主机名，clientid即连接MQTT的客户端ID，一般以唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
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String clientId =config.getSubclientid() +config.getVersion();
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subClient = new org.eclipse.paho.client.mqttv3.MqttClient(config.getHost(), clientId,new MemoryPersistence());
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// MQTT的连接设置
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MqttConnectOptions options = new MqttConnectOptions();
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// 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，设置为true表示每次连接到服务器都以新的身份连接
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options.setCleanSession(false);
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// 设置连接的用户名
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options.setUserName(config.getUsername());
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// 设置连接的密码
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options.setPassword(config.getPassword().toCharArray());
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// 设置超时时间 单位为秒
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options.setConnectionTimeout(10);
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// 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
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options.setKeepAliveInterval(20);
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// 设置回调
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subClient.setCallback(callBack);
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//设置断开后重新连接
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options.setAutomaticReconnect(true);
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MqttTopic topic = subClient.getTopic(clientId+"_close");
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//遗嘱
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options.setWill(topic, "close".getBytes(), 1, true);
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subClient.connect(options);
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} catch (Exception e) {
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e.printStackTrace();
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}
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return subClient;
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}
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public static synchronized void isSubClientValid() {
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if(isNeedReSub){
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MqttSubService service = SpringContextUtil.getBean(MqttSubService.class);
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if(service!=null){
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service.startSubcribe();
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}
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}
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}
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public static synchronized void refreshClient() {
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try {
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if(subClient !=null && !subClient.isConnected()){
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subClient.reconnect();
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}
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}catch (Exception e){
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e.printStackTrace();
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}
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}
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}
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