mqtt断线重连,配置修改重新创建连接06

1d4fc2b1 · “liusq” · 0d1cc66f · 1d4fc2b1
Commit 1d4fc2b1 authored Sep 09, 2024 by “liusq”
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Showing with 68 additions and 52 deletions

MqttSubscriber.cpp
+68 -52

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--- a/MqttSubscriber.cpp
+++ b/MqttSubscriber.cpp
 #include "MqttSubscriber.h"
 #include "mainwindow.h"
 #include "CameraHandle.h"
 MqttSubscriber* MqttSubscriber::instance = nullptr;
 MqttSubscriber* MqttSubscriber::getInstance(QObject* parent) {
@@ -10,53 +11,72 @@ MqttSubscriber* MqttSubscriber::getInstance(QObject* parent) {
    return instance;
 }
-void MqttSubscriber::init(vides_data::MqttConfig &config,QString &httpUrl,QString &serialNumber){
+void MqttSubscriber::init(vides_data::MqttConfig &config, QString &httpUrl, QString &serialNumber) {
-    this->config=config;
+    // 清理之前的客户端资源
-    this->httpUrl=httpUrl;
+    if (client != nullptr) {
-    this->serialNumber=serialNumber;
+        MQTTAsync_destroy(&client);  // 释放之前的MQTT客户端
-    QByteArray bAddress = config.address.toUtf8();
+        client = nullptr;  // 确保指针清空
-    char* cAddress=bAddress.data();
+    }
+    // 保存配置信息
+    this->config = config;
+    this->httpUrl = httpUrl;
+    this->serialNumber = serialNumber;
+    // 初始化MQTT客户端
+    QByteArray bAddress = config.address.toUtf8();
+    char* cAddress = bAddress.data();
    QByteArray bClientId = config.clientId.toUtf8();
-    char* cClientId=bClientId.data();
+    char* cClientId = bClientId.data();
+    MQTTAsync_create(&client, cAddress, cClientId, MQTTCLIENT_PERSISTENCE_NONE, nullptr);
-    MQTTAsync_create(&client,cAddress,cClientId, MQTTCLIENT_PERSISTENCE_NONE, nullptr);
    MQTTAsync_setCallbacks(client, this, [](void* context, char* cause) {
        static_cast<MqttSubscriber*>(context)->connectionLost(cause);
    }, [](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,Qt::QueuedConnection);
 }
 MqttSubscriber::MqttSubscriber(QObject* parent)
    : QObject(parent), retryTimer(new QTimer(this)) {
+    // 连接信号和槽
+    connect(this, &MqttSubscriber::connectionLostSignal, this, &MqttSubscriber::reconnectAndFetchConfig, Qt::QueuedConnection);
    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,Qt::QueuedConnection);
+    connect(retryTimer, &QTimer::timeout, this, &MqttSubscriber::reconnectAndFetchConfig, Qt::QueuedConnection);
 }
 MqttSubscriber::~MqttSubscriber() {
+    if (client != nullptr) {
        MQTTAsync_destroy(&client);
+        client = nullptr;
+    }
    instance = nullptr;
 }
 void MqttSubscriber::start() {
-    retryTimer->stop(); // 确保每次开始连接前停止定时器
+    // 确保每次开始连接前停止定时器
+    retryTimer->stop();
+    // 如果客户端已经连接，应该先断开旧的连接
+    if (client != nullptr) {
+        MQTTAsync_disconnectOptions disc_opts = MQTTAsync_disconnectOptions_initializer;
+        int rc = MQTTAsync_disconnect(client, &disc_opts);
+        if (rc != MQTTASYNC_SUCCESS) {
+            qInfo() << "旧连接断开失败，返回编码" << rc;
+        }
+    }
    MQTTAsync_connectOptions conn_opts = MQTTAsync_connectOptions_initializer;
    conn_opts.keepAliveInterval = 20;
    conn_opts.cleansession = 1;
    QByteArray bUsername = config.username.toUtf8();
-    char* cUsername=bUsername.data();
+    char* cUsername = bUsername.data();
    QByteArray bPassword = config.password.toUtf8();
-    char* cPassword=bPassword.data();
+    char* cPassword = bPassword.data();
    conn_opts.username = cUsername;
    conn_opts.password = cPassword;
@@ -86,27 +106,28 @@ void MqttSubscriber::onConnect(MQTTAsync_successData* response) {
    opts.context = this;
    QByteArray bTopic = config.topic.toUtf8();
-    char* cTopic=bTopic.data();
+    char* cTopic = bTopic.data();
    int rc;
    if ((rc = MQTTAsync_subscribe(client, cTopic, config.qos, &opts)) != MQTTASYNC_SUCCESS) {
-        qInfo() << "启动订阅失败，返回编码" << rc<<response->token;
+        qInfo() << "启动订阅失败，返回编码" << rc << response->token;
    }
 }
 void MqttSubscriber::reconnectAndFetchConfig() {
-    qInfo() << "重新连接并获取配置 ";
+    qInfo() << "重新连接并获取配置";
-    Common & instace= Common::getInstance();
+    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);
+    vides_data::response* res = httpService.httpDeviceConfig(serialNumber, re_config);
    if (res->code == 0) {
        instace.deleteObj(res);
-        re_config.mqttConfig.clientId=serialNumber;
+        re_config.mqttConfig.clientId = serialNumber;
        QString topic = QStringLiteral("/thingshub/%1/device/reply").arg(serialNumber);
-        re_config.mqttConfig.topic=topic;
+        re_config.mqttConfig.topic = topic;
-        this->config=re_config.mqttConfig;
+        this->config = re_config.mqttConfig;
-        this->init(re_config.mqttConfig,httpUrl,serialNumber);
+        this->init(re_config.mqttConfig, httpUrl, serialNumber);
        start();
    } else {
        qInfo() << "配置拉取失败，等待10秒后重试";
@@ -118,11 +139,10 @@ void MqttSubscriber::reconnectAndFetchConfig() {
 void MqttSubscriber::onConnectFailure(MQTTAsync_failureData* response) {
    qInfo() << "连接失败, rc" << (response ? response->code : -1);
    retryTimer->start();
 }
 void MqttSubscriber::onSubscribe(MQTTAsync_successData* response) {
-    qInfo() << "订阅成功"<<response->token;
+    qInfo() << "订阅成功" << response->token;
 }
 void MqttSubscriber::onSubscribeFailure(MQTTAsync_failureData* response) {
@@ -135,7 +155,6 @@ void MqttSubscriber::connectionLost(char* cause) {
        qInfo() << "Cause:" << cause;
    }
    emit connectionLostSignal();  // 发出连接丢失信号
 }
 int MqttSubscriber::messageArrived(char* topicName, int topicLen, MQTTAsync_message* m) {
@@ -152,30 +171,28 @@ int MqttSubscriber::messageArrived(char* topicName, int topicLen, MQTTAsync_mess
    } else {
        qInfo() << "Failed to parse JSON payload";
    }
-    int res=-2;
-    //1开  2关  3 重启 4 GB28181开 5 GB28181关
+    int res = -2;
-    CameraHandle*cameraHandle= MainWindow::sp_this->findHandle(response.sn);
+    CameraHandle* cameraHandle = MainWindow::sp_this->findHandle(response.sn);
-    if(cameraHandle==nullptr){
+    if (cameraHandle == nullptr) {
        qInfo() << "不存在该相机";
-        res=-1;
+        res = -1;
-    }else{
+    } else {
-        if(response.msg_type==2){
+        if (response.msg_type == 2) {
-            res=cameraHandle->deviceShutdown();
+            res = cameraHandle->deviceShutdown();
-        }
+        } else if (response.msg_type == 3) {
-        if(response.msg_type==3){
+            res = cameraHandle->deviceReboot();
-            res= cameraHandle->deviceReboot();
+        } else if (response.msg_type == 4) {
-        }
+            res = cameraHandle->updateSdkDevStatus(true);
-        if(response.msg_type==4){
+        } else if (response.msg_type == 5) {
-            res=cameraHandle->updateSdkDevStatus(true);
+            res = cameraHandle->updateSdkDevStatus(false);
-        }
-        if(response.msg_type==5){
-            res= cameraHandle->updateSdkDevStatus(false);
        }
    }
    vides_data::requestMqttData request;
-    request.code =res>=0?0:0x01;
+    request.code = (res >= 0) ? 0 : 0x01;
    request.uniq = response.uniq;
-    request.sn=response.sn ;
+    request.sn = response.sn;
    sendSubscriptionConfirmation(request);
    MQTTAsync_freeMessage(&m);
@@ -184,13 +201,11 @@ int MqttSubscriber::messageArrived(char* topicName, int topicLen, MQTTAsync_mess
 }
 void MqttSubscriber::sendSubscriptionConfirmation(const vides_data::requestMqttData& response) {
    QString responseTopic = "/thingshub/" + response.sn + "/device/post";
    QByteArray bResponseTopic = responseTopic.toUtf8();
    char* cResponseTopic = bResponseTopic.data();
-    qInfo() << "sendSubscriptionConfirmation"<<cResponseTopic;
+    qInfo() << "sendSubscriptionConfirmation" << cResponseTopic;
-    // 将 struct 转换成 JSON 格式
    QJsonObject json;
    json["code"] = response.code;
    json["uniq"] = response.uniq;
@@ -219,9 +234,10 @@ void MqttSubscriber::sendSubscriptionConfirmation(const vides_data::requestMqttD
 }
 void MqttSubscriber::onPublishSuccess(MQTTAsync_successData* response) {
-    qInfo() << "消息已成功发布"<<response->token;
+    qInfo() << "消息已成功发布" << response->token;
 }
 void MqttSubscriber::onPublishFailure(MQTTAsync_failureData* response) {
    qInfo() << "消息发布失败, rc" << (response ? response->code : -1);
 }