lp-data-alarm/MQTTAgent/MQTTAgent.cpp

#include "MQTTAgent.h"
#include <QMqtt.h>

MQTTAgent* g_pThis;

QMQTT::Client*  m_pMqtt;
MQTTAgent::MQTTAgent()
	: QObject()
{
    m_pMqtt = nullptr;
    g_pThis = this;
}

MQTTAgent::~MQTTAgent()
{
    if( m_pMqtt != nullptr )
    {
        delete m_pMqtt;
    }
}

void onReceived(const QMQTT::Message& message)
{
    emit g_pThis->sigEvent((char*)message.topic().toLocal8Bit().toStdString().c_str(), (char*)message.payload().toStdString().c_str());
    //qDebug() << "recv" << message.topic() << message.payload();
}

bool MQTTAgent::Connect(tagSetup ts)
{
    m_pMqtt = new QMQTT::Client();

    connect(m_pMqtt, &QMQTT::Client::connected, []{
        qDebug()<< __FILE__ << __LINE__ << "connected";
    });
    connect(m_pMqtt, &QMQTT::Client::disconnected, []{
        qDebug()<< __FILE__ << __LINE__ << "disconnect";
    });
    connect(m_pMqtt, &QMQTT::Client::received, this, &onReceived);

    m_pMqtt->setHostName(ts.addr.c_str());
    //m_pMqtt->setHostName("mq.tongxinmao.com"); //18830
    //m_pMqtt->setHostName("www.kjxry.cn");
    m_pMqtt->setPort(ts.port);
    m_pMqtt->setKeepAlive(60);
    m_pMqtt->setClientId("C001"); //唯一id, 相同id不能同时连接
    m_pMqtt->setUsername(ts.user.c_str());
    m_pMqtt->setPassword(ts.password.c_str());

    m_pMqtt->setAutoReconnect(true); //开启自动重连
    m_pMqtt->setCleanSession(true); //非持久化连接，上线时，将不再关心之前所有的订阅关系以及离线消息

    m_pMqtt->setVersion(QMQTT::V3_1_1);
    qDebug()<< __FILE__ << __LINE__<< "ver" << m_pMqtt->version();

    m_pMqtt->connectToHost();

    return true;
}

bool MQTTAgent::Subscribe(std::list<std::string> topics)
{
    bool ret = true;
    std::list<std::string>::iterator itr;
    for (itr = topics.begin(); itr != topics.end(); ++itr)
    {
        m_pMqtt->subscribe(itr->c_str(), 1);
    }

	return ret;
}

void MQTTAgent::Publish(std::string szKey,QVariant v)
{
    std::string szContent;
    switch( v.type() )
    {
    case QMetaType::Bool:
        szContent = v.toBool() ? "true":"false";
        break;
    case QMetaType::Int:
        szContent = std::to_string(v.toInt());
        break;
    case QMetaType::UInt:
        szContent = std::to_string(v.toUInt());
        break;
    case QMetaType::LongLong:
        szContent = std::to_string(v.toLongLong());
        break;
    case QMetaType::ULongLong:
        szContent = std::to_string(v.toULongLong());
        break;
    case QMetaType::Double:
        szContent = std::to_string(v.toDouble());
        break;
    case QMetaType::QString:
        szContent = v.toString().toLocal8Bit().toStdString();
        break;
    }

    QMQTT::Message message;
    message.setTopic(szKey.c_str());
    message.setPayload(szContent.c_str());
    message.setRetain(true); //保留最后一条数据
    m_pMqtt->publish(message);
}

QStringList MQTTAgent::hvals(QString k)
{
    return QStringList();
}