mqtt断线重连,配置修改重新创建连接

HttpService.cpp

@@ -556,6 +556,7 @@ vides_data::response *HttpService::httpDeviceConfig(const QString &serialNumber,
         config.mqttConfig.timeout = mqttConfigObj["timeout"].toVariant().toULongLong();
         config.mqttConfig.username=mqttConfigObj["username"].toString();
         config.mqttConfig.password=mqttConfigObj["password"].toString();
+        config.mqttConfig.updateAt=mqttConfigObj["updateAt"].toVariant().toULongLong();
 
         resp->msg=map["message"].toString();
     }else{

MqttSubscriber.cpp

@@ -3,16 +3,17 @@
 #include "CameraHandle.h"
 MqttSubscriber* MqttSubscriber::instance = nullptr;
 
-MqttSubscriber* MqttSubscriber::getInstance(vides_data::MqttConfig& config, QObject* parent) {
+MqttSubscriber* MqttSubscriber::getInstance(QObject* parent) {
     if (!instance) {
-        instance = new MqttSubscriber(config, parent);
+        instance = new MqttSubscriber(parent);
     }
     return instance;
 }
 
-MqttSubscriber::MqttSubscriber(vides_data::MqttConfig& config, QObject* parent)
-    : QObject(parent), config(config) {
-    
+void MqttSubscriber::init(vides_data::MqttConfig &config,QString &httpUrl,QString &serialNumber){
+    this->config=config;
+    this->httpUrl=httpUrl;
+    this->serialNumber=serialNumber;
     QByteArray bAddress = config.address.toUtf8();
     char* cAddress=bAddress.data();
 
@@ -27,6 +28,16 @@ MqttSubscriber::MqttSubscriber(vides_data::MqttConfig& config, QObject* parent)
     }, [](void* context, char* topicName, int topicLen, MQTTAsync_message* m) {
         return static_cast<MqttSubscriber*>(context)->messageArrived(topicName, topicLen, m);
     }, nullptr);
+
+    // 连接信号和槽
+     connect(this, &MqttSubscriber::connectionLostSignal, this, &MqttSubscriber::reconnectAndFetchConfig);
+}
+
+MqttSubscriber::MqttSubscriber(QObject* parent)
+    : QObject(parent), retryTimer(new QTimer(this)) {
+    retryTimer->setInterval(10000);  // 设置重试间隔为10秒
+    retryTimer->setSingleShot(true);  // 单次触发
+    connect(retryTimer, &QTimer::timeout, this, &MqttSubscriber::reconnectAndFetchConfig);
 }
 
 MqttSubscriber::~MqttSubscriber() {
@@ -35,6 +46,7 @@ MqttSubscriber::~MqttSubscriber() {
 }
 
 void MqttSubscriber::start() {
+    retryTimer->stop(); // 确保每次开始连接前停止定时器
     MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer;
     conn_opts.keepAliveInterval = 20;
     conn_opts.cleansession = 1;
@@ -63,6 +75,7 @@ void MqttSubscriber::start() {
 }
 
 void MqttSubscriber::onConnect(MQTTAsync_successData* response) {
+    retryTimer->stop();
     MQTTAsync_responseOptions opts = MQTTAsync_responseOptions_initializer;
     opts.onSuccess = [](void* context, MQTTAsync_successData* response) {
         static_cast<MqttSubscriber*>(context)->onSubscribe(response);
@@ -80,8 +93,32 @@ void MqttSubscriber::onConnect(MQTTAsync_successData* response) {
     }
 }
 
+void MqttSubscriber::reconnectAndFetchConfig() {
+    Common & instace= Common::getInstance();
+
+    vides_data::responseConfig re_config;
+    // 使用 HttpService 从远程云端拉取配置
+    HttpService httpService(httpUrl);  // 替换为实际的远程URL
+    vides_data::response *res = httpService.httpDeviceConfig(serialNumber,re_config);
+    if (res->code != 0) {
+        instace.deleteObj(res);
+        re_config.mqttConfig.clientId=serialNumber;
+        QString topic = QStringLiteral("/thingshub/%1/device/reply").arg(serialNumber);
+        re_config.mqttConfig.topic=topic;
+        this->config=re_config.mqttConfig;
+        init(re_config.mqttConfig,httpUrl,serialNumber);
+        start();
+    } else {
+        qInfo() << "配置拉取失败，等待10秒后重试";
+        instace.deleteObj(res);
+        retryTimer->start();  // 启动定时器，10秒后重试
+    }
+}
+
 void MqttSubscriber::onConnectFailure(MQTTAsync_failureData* response) {
     qInfo() << "连接失败, rc" << (response ? response->code : -1);
+    retryTimer->start();
+
 }
 
 void MqttSubscriber::onSubscribe(MQTTAsync_successData* response) {
@@ -97,6 +134,8 @@ void MqttSubscriber::connectionLost(char* cause) {
     if (cause) {
         qInfo() << "Cause:" << cause;
     }
+    emit connectionLostSignal();  // 发出连接丢失信号
+
 }
 
 int MqttSubscriber::messageArrived(char* topicName, int topicLen, MQTTAsync_message* m) {

MqttSubscriber.h

@@ -2,6 +2,7 @@
 #define MQTTSUBSCRIBER_H
 #include <MQTTClient.h>
 #include <MQTTAsync.h>
+#include <QTimer>
 
 #include <QObject>
 #include "VidesData.h"
@@ -9,15 +10,25 @@ class MqttSubscriber : public QObject
 {
     Q_OBJECT
 public:
-    static MqttSubscriber* getInstance(vides_data::MqttConfig& config, QObject* parent = nullptr);    ~MqttSubscriber();
+    static MqttSubscriber* getInstance( QObject* parent = nullptr);    ~MqttSubscriber();
 
+    void init(vides_data:: MqttConfig& config,QString &httpUrl,QString &serialNumber);
     void start();
+signals:
+   void connectionLostSignal();
+
+private slots:
+    void reconnectAndFetchConfig();
 private:
-    MqttSubscriber(vides_data:: MqttConfig& config, QObject* parent = nullptr);
-    MqttSubscriber(const MqttSubscriber&) = delete;
+    MqttSubscriber(QObject* parent = nullptr);
+    MqttSubscriber() = delete;
     MqttSubscriber& operator=(const MqttSubscriber&) = delete;
 
+    QTimer *retryTimer;
+
     MQTTAsync client;
+    QString httpUrl;
+    QString serialNumber;
 
     vides_data::MqttConfig config;
 

VidesData.h

@@ -287,6 +287,7 @@ struct MqttConfig {
     QString topic;
     QString username;
     QString password;
+    quint64 updateAt;
 };
 
 struct responseConfig {

gamera_videos.pro

@@ -126,13 +126,8 @@ HEADERS += \
     BaseAlgorithm.h \
     MqttSubscriber.h
 
-#FORMS += \
-#    mainwindow.ui
-
 # Default rules for deployment.
 qnx: target.path = /tmp/$${TARGET}/bin
 else: unix:!android: target.path = /opt/$${TARGET}/bin
 !isEmpty(target.path): INSTALLS += target
 
-#RESOURCES += \
-#    BG.qrc

mainwindow.cpp

@@ -131,11 +131,15 @@ MainWindow::MainWindow()
     QString topic = QStringLiteral("/thingshub/%1/device/reply").arg(serialNumber);
     config.mqttConfig.topic=topic;
     this->mqttConfig= config.mqttConfig;
-    MqttSubscriber* subscriber = MqttSubscriber::getInstance(mqttConfig);
+    runOrRebootMqtt(mqttConfig,httpurl,serialNumber);
+}
+void MainWindow::runOrRebootMqtt(vides_data::MqttConfig &mqtt_config,QString &httpUrl,QString &serialNumber){
+    MqttSubscriber* subscriber = MqttSubscriber::getInstance(this);
+    subscriber->init(mqtt_config,httpUrl,serialNumber);
     subscriber->start();
 }
 
-void MainWindow::divParameterUpdate(vides_data::responseConfig &cloudConfig ){   
+void MainWindow::divParameterUpdate(vides_data::responseConfig &cloudConfig,QString &httpUrl,QString &serialNumber ){
     bool faceAlgorithm = false, licensePlateAlgorithm = false, uniformAlgorithm = false, timeChange = false;
     AlgorithmTaskManage &algorithmTaskManage= AlgorithmTaskManage::getInstance();
 
@@ -162,6 +166,10 @@ void MainWindow::divParameterUpdate(vides_data::responseConfig &cloudConfig ){
     if(!faceAlgorithm && !licensePlateAlgorithm && !uniformAlgorithm && !timeChange){
         return;
     }
+    if(config.mqttConfig.updateAt!=cloudConfig.mqttConfig.updateAt){
+        cloudConfig.mqttConfig.topic=config.mqttConfig.topic;
+        runOrRebootMqtt(cloudConfig.mqttConfig,httpUrl,serialNumber);
+    }
     __uint8_t alg= this->intToUint8t(faceAlgorithm,licensePlateAlgorithm,uniformAlgorithm) ;
 
     vides_data::DetectionParams params;
@@ -500,7 +508,7 @@ void MainWindow::startCamera(const QString &httpurl){
             return ;
         }
         instace.deleteObj(res_config);
-        divParameterUpdate(cloudConfig);
+        divParameterUpdate(cloudConfig,nonConstHttpUrl,serialNumber);
 
         for (const auto& device : devices.list) {
             if(localDevices.count(device.sSn)>0 ){

mainwindow.h

@@ -38,13 +38,14 @@ public:
     
     void createDirectory(int flag,const QString& dirName, const QString& successMsg, const QString& failureMsg);
     
+    void runOrRebootMqtt(vides_data::MqttConfig &mqtt_config,QString &httpUrl,QString &serialNumber);
     
     void initFaceFaceRecognition();
     
     void initCameras(vides_data::cameraParameters &parameter, vides_data::responseConfig &devConfig, const std::list<vides_data::responseArea>&areas,std::list<vides_data::requestCameraInfo>&camera_info_list);
     __uint8_t intToUint8t(bool faceAlgorithm,bool licensePlateAlgorithm,bool uniformAlgorithm); 
      //盒子参数更新
-     void divParameterUpdate(vides_data::responseConfig &cloudConfig ); 
+     void divParameterUpdate(vides_data::responseConfig &cloudConfig,QString &httpUrl,QString &serialNumber );
     
     static MainWindow * sp_this;