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src/qmqtt.cpp 3.88 KB
210d2652   Steven de Ridder   Initial commit.
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  /* ****************************************************************************
   * Copyright 2019 Open Systems Development BV                                 *
   *                                                                            *
   * Permission is hereby granted, free of charge, to any person obtaining a    *
   * copy of this software and associated documentation files (the "Software"), *
   * to deal in the Software without restriction, including without limitation  *
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,   *
   * and/or sell copies of the Software, and to permit persons to whom the      *
   * Software is furnished to do so, subject to the following conditions:       *
   *                                                                            *
   * The above copyright notice and this permission notice shall be included in *
   * all copies or substantial portions of the Software.                        *
   *                                                                            *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,   *
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL    *
   * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING    *
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER        *
   * DEALINGS IN THE SOFTWARE.                                                  *
   * ***************************************************************************/
  #include "qmqtt.h"
  #include "log.h"
  
  using namespace osdev::components;
  
  QMQTTClient::QMQTTClient( const QMqttConfigSettings& connectionSettings, QObject *parent )
      : QObject(parent)
      , m_qhConnections()
      , m_connConfig( connectionSettings )
  {
  
  }
  
  QMQTTClient::~QMQTTClient()
  {
      // Clean up any connections we have.
      for( auto key : m_qhConnections.keys())
      {
          QPointer<QMqttPubSubClient> pTemp = m_qhConnections.take( key );
          if(pTemp)
          {
              delete pTemp.data();
          }
      }
  }
  
  void QMQTTClient::subscribe( const QString& mqtt_topic )
  {
      if(!topicExists( mqtt_topic ) )
      {
          if( !createNewThread( mqtt_topic ) )
          {
              LogError("[QMQTTClient::subscribe]", QString("There was an error creating a subscription to : %1").arg(mqtt_topic));
          }
      }
  
      if( topicExists( mqtt_topic ) )
      {
          m_qhConnections.value( mqtt_topic )->subscribe( mqtt_topic );
      }
  }
  
  void QMQTTClient::unsubscribe(const QString& mqtt_topic)
  {
      if( topicExists( mqtt_topic ) )
      {
          m_qhConnections.value( mqtt_topic )->unsubscribe( mqtt_topic );
      }
  }
  
  void QMQTTClient::publish(const QString& mqtt_topic, const QString& mqtt_message)
  {
      if( !topicExists( mqtt_topic ) )
      {
          if( !createNewThread( mqtt_topic ) )
          {
              LogError("[QMQTTClient::publish]", QString("There was an error creating publishing to : %1").arg( mqtt_topic ) );
          }
      }
  
      if(topicExists(mqtt_topic))
      {
          m_qhConnections.value(mqtt_topic)->publish(mqtt_topic, mqtt_message);
      }
  }
  
  bool QMQTTClient::createNewThread(const QString& topic)
  {
      QPointer<QMqttPubSubClient> pThread = new QMqttPubSubClient(m_connConfig.getHostAddress(), m_connConfig.getPortNumber() );
      if(pThread)
      {
          connect( pThread.data(), &QMqttPubSubClient::signalMessageReceived, this, &QMQTTClient::signalNewMessageReceived );
          connect( pThread.data(), &QMqttPubSubClient::signalReInitialise, this, &QMQTTClient::signalReInitialize );
          m_qhConnections.insert( topic, pThread );
      }
      return m_qhConnections.contains( topic );
  }
  
  bool QMQTTClient::topicExists( const QString& topic )
  {
      if( m_qhConnections.contains( topic ) )
          return true;
      else
          return false;
  }