examples/sub/subscriber.cpp

/* ****************************************************************************
 * Copyright 2019 Open Systems Development BV                                 *
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#include "subscriber.h"
#include <iostream>
Subscriber::Subscriber( const std::string &client_id )
    : m_mqtt_client( client_id )
{
}
void Subscriber::connect( const std::string &hostname, int portnumber, const std::string &username, const std::string &password, const std::string &lwt_topic, const std::string &lwt_message )
{
    m_mqtt_client.connect( hostname, portnumber, osdev::components::mqtt::Credentials( username, password ), osdev::components::mqtt::mqtt_LWT( lwt_topic, lwt_message ) );
    std::cout << "Client state : " << m_mqtt_client.state() << std::endl;
}
void Subscriber::subscribe( const std::string &message_topic )
{
    m_mqtt_client.subscribe( message_topic, 1, [this](const osdev::components::mqtt::MqttMessage &message )
    {
        this->receive_data( message.topic(), message.payload() );
    });
}
void Subscriber::unsubscribe( const std::string &message_topic )
{
    m_mqtt_client.unsubscribe( message_topic, 1 );
}
void Subscriber::receive_data( const std::string &message_topic, const std::string &message_payload )
{
    std::cout << "[Subscriber::receive_data] - Received message : " << message_payload << " from topic : " << message_topic << std::endl;
}