qmqtt_pubsubclient.cpp
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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. *
* ***************************************************************************/
// osdev::components
#include "qmqtt_pubsubclient.h"
#include "log.h"
// Qt
#include <QRandomGenerator>
using namespace osdev::components;
QMqttPubSubClient::QMqttPubSubClient(const QHostAddress& host,
const quint16 port,
QObject *parent)
: QMQTT::Client(host, port, parent)
, m_mqtt_topic()
, m_current_state(mqtt::E_CLIENT_UNKNOWN)
, m_subTemp()
, m_pubTemp()
{
this->connectSignalsAndSlots();
this->connectToHost();
}
QMqttPubSubClient::~QMqttPubSubClient()
{
}
void QMqttPubSubClient::subscribe(const QString& message_topic)
{
if(m_current_state == mqtt::E_CLIENT_CONNECTED)
{
QMQTT::Client::subscribe(message_topic);
}
else
{
m_subTemp.first = message_topic;
m_subTemp.second = QString();
}
}
void QMqttPubSubClient::unsubscribe(const QString& message_topic)
{
if(m_current_state == mqtt::E_CLIENT_SUBSCRIBED)
{
QMQTT::Client::unsubscribe( message_topic );
}
}
void QMqttPubSubClient::publish(const QString& message_topic, const QString& message_payload)
{
if(m_current_state == mqtt::E_CLIENT_CONNECTED ||
m_current_state == mqtt::E_CLIENT_SUBSCRIBED ||
m_current_state == mqtt::E_CLIENT_PUBLISHED)
{
QMQTT::Message oMessage( QRandomGenerator::global()->generate(),
message_topic,
QByteArray(message_payload.toStdString().c_str()),
0, true, false );
QMQTT::Client::publish(oMessage);
}
else
{
m_pubTemp.first = message_topic;
m_pubTemp.second = message_payload;
}
}
void QMqttPubSubClient::slotOnConnected()
{
// Ok. We're connected at the moment. Lets set the state and see what we need to do.
m_current_state = mqtt::E_CLIENT_CONNECTED;
if(!m_subTemp.first.isEmpty())
{
this->subscribe( m_subTemp.first );
}
else if(!m_pubTemp.first.isEmpty())
{
this->publish( m_pubTemp.first, m_pubTemp.second );
}
}
void QMqttPubSubClient::slotOnDisconnected()
{
m_current_state = mqtt::E_CLIENT_DISCONNECTED;
}
void QMqttPubSubClient::slotOnError(const QMQTT::ClientError error)
{
m_current_state = mqtt::E_CLIENT_ERROR;
LogError( "[QMqttPubSubClient::slotOnError]", QString( "An error occured : %1" ).arg( error ) );
LogError( "[QMqttPubSubClient::slotOnError]", this->getErrorMessage( error ) );
}
QString QMqttPubSubClient::getErrorMessage( const QMQTT::ClientError error )
{
QString l_error_message;
switch( error )
{
case QMQTT::SocketConnectionRefusedError:
l_error_message = "[Socket] - Connection Refused";
break;
case QMQTT::SocketRemoteHostClosedError:
l_error_message = "[Socket] - Remote Host Closed";
emit signalReInitialise();
break;
case QMQTT::SocketHostNotFoundError:
l_error_message = "[Socket] - Host Not Found.";
break;
case QMQTT::SocketAccessError:
l_error_message = "[Socket] - Access Error.";
break;
case QMQTT::SocketResourceError:
l_error_message = "[Socket] - Resource Error.";
break;
case QMQTT::SocketTimeoutError:
l_error_message = "[Socket] - Timeout.";
break;
case QMQTT::SocketDatagramTooLargeError:
l_error_message = "[Socket] - Datagram Too Large.";
break;
case QMQTT::SocketNetworkError:
l_error_message = "[Socket] - Network Error.";
break;
case QMQTT::SocketAddressInUseError:
l_error_message = "[Socket] - Address In Use.";
break;
case QMQTT::SocketAddressNotAvailableError:
l_error_message = "[Socket] - Address Not Available.";
break;
case QMQTT::SocketUnsupportedSocketOperationError:
l_error_message = "[Socket] - Unsupported Socket Operation.";
break;
case QMQTT::SocketUnfinishedSocketOperationError:
l_error_message = "[Socket] - Unfinished Socket Operation.";
break;
case QMQTT::SocketProxyAuthenticationRequiredError:
l_error_message = "[Socket] - Proxy Authentication Required.";
break;
case QMQTT::SocketSslHandshakeFailedError:
l_error_message = "[Socket] - SSL Handshake Failed.";
break;
case QMQTT::SocketProxyConnectionRefusedError:
l_error_message = "[Socket] - Proxy Connection Refused.";
break;
case QMQTT::SocketProxyConnectionClosedError:
l_error_message = "[Socket] - Proxy Connection Closed.";
break;
case QMQTT::SocketProxyConnectionTimeoutError:
l_error_message = "[Socket] - Proxy Connection Closed.";
break;
case QMQTT::SocketProxyNotFoundError:
l_error_message = "[Socket] - Proxy Not Found.";
break;
case QMQTT::SocketProxyProtocolError:
l_error_message = "[Socket] - Proxy Protocol Error.";
break;
case QMQTT::SocketOperationError:
l_error_message = "[Socket] - Operation Error.";
break;
case QMQTT::SocketSslInternalError:
l_error_message = "[Socket] - SSL Internal Error.";
break;
case QMQTT::SocketSslInvalidUserDataError:
l_error_message = "[Socket] - SSL Invalid User Data.";
break;
case QMQTT::SocketTemporaryError:
l_error_message = "[Socket] - Temporary Error.";
break;
case QMQTT::MqttUnacceptableProtocolVersionError:
l_error_message = "[MQTT] - Unacceptable Protocol Version.";
break;
case QMQTT::MqttIdentifierRejectedError:
l_error_message = "[MQTT] - Identifier Rejected.";
break;
case QMQTT::MqttServerUnavailableError:
l_error_message = "[MQTT] - Server Unavailable.";
break;
case QMQTT::MqttBadUserNameOrPasswordError:
l_error_message = "[MQTT] - Bad Username Or Password.";
break;
case QMQTT::MqttNotAuthorizedError:
l_error_message = "[MQTT] - Not Authorized.";
break;
case QMQTT::MqttNoPingResponse:
l_error_message = "[MQTT] - No Ping Response";
break;
case QMQTT::UnknownError:
default:
l_error_message = "An Unknown Error Occurred";
break;
}
return l_error_message;
}
void QMqttPubSubClient::slotOnSubscribed(const QString& topic, const quint8 qos)
{
Q_UNUSED(qos);
m_current_state = mqtt::E_CLIENT_SUBSCRIBED;
LogInfo("[QMqttPubSubClient::slotOnSubscribed]", QString("Subscribed to topic %1").arg(topic));
}
void QMqttPubSubClient::slotOnUnSubscribed(const QString& topic)
{
m_current_state = mqtt::E_CLIENT_UNSUBSCRIBED;
LogInfo("[QMqttPubSubClient::slotOnUnSubscribed]", QString("Unsubscribed to topic %1").arg(topic));
}
void QMqttPubSubClient::slotOnPublished(const QMQTT::Message& message, quint16 msgid)
{
m_current_state = mqtt::E_CLIENT_PUBLISHED;
LogInfo("[QMqttPubSubClient::slotOnPublished]", QString("Message %1 published to topic %2 with id %3").arg(message.topic()).arg(message.payload().toStdString().c_str()).arg(msgid));
}
void QMqttPubSubClient::slotOnReceived(const QMQTT::Message& message)
{
LogDebug("[QMqttPubSubClient::slotOnReceived]", QString("Received payload : %1 from topic : %2").arg(message.payload().toStdString().c_str()).arg(message.topic()));
emit signalMessageReceived(message.topic(), message.payload().toStdString().c_str());
}
void QMqttPubSubClient::slotOnPingResp()
{
LogDebug("[QMqttPubSubClient::slotOnPingResp]", QString("Ping Response received."));
}
#ifndef QT_NO_SSL
void QMqttPubSubClient::slotSslErrors(const QList<QSslError>& errors)
{
Q_UNUSED(errors);
}
#endif /* QT_NO_SSL */
void QMqttPubSubClient::connectSignalsAndSlots()
{
connect(this, &QMQTT::Client::connected, this, &QMqttPubSubClient::slotOnConnected);
connect(this, &QMQTT::Client::disconnected, this, &QMqttPubSubClient::slotOnDisconnected);
connect(this, &QMQTT::Client::error, this, &QMqttPubSubClient::slotOnError);
connect(this, &QMQTT::Client::subscribed, this, &QMqttPubSubClient::slotOnSubscribed);
connect(this, &QMQTT::Client::unsubscribed, this, &QMqttPubSubClient::slotOnUnSubscribed);
connect(this, &QMQTT::Client::published, this, &QMqttPubSubClient::slotOnPublished);
connect(this, &QMQTT::Client::received, this, &QMqttPubSubClient::slotOnReceived);
connect(this, &QMQTT::Client::pingresp, this, &QMqttPubSubClient::slotOnPingResp);
#ifndef QT_NO_SSL
connect(this, &QMQTT::Client::sslErrors, this, &QMqttPubSubClient::slotSslErrors);
#endif /* QT_NO_SSL */
}