mqttfailure.h
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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. *
* ***************************************************************************/
#ifndef OSDEV_COMPONENTS_MQTT_MQTTFAILURE_H
#define OSDEV_COMPONENTS_MQTT_MQTTFAILURE_H
// std
#include <string>
// paho
#include <MQTTAsync.h>
namespace osdev {
namespace components {
namespace mqtt {
/*!
* \brief Class for paho mqtt failure response data.
*/
class MqttFailure
{
public:
/*!
* \brief Construct MqttFailure instance by copying information from the paho failure struct.
* \param data Paho response failure data.
*/
explicit MqttFailure(const MQTTAsync_failureData* data);
/*!
* \return The command token
*/
MQTTAsync_token token() const { return m_token; }
/*!
* \return The failure code.
*/
int code() const { return m_code; }
/*!
* \return The failure message.
* \retval "no message" when no message is available.
*/
const std::string& message() const { return m_message; }
/*!
* \return string interpretation of the code.
* \note negative codes are interpreted as paho error codes.
*/
std::string codeToString() const;
private:
MQTTAsync_token m_token; ///< Command token.
int m_code; ///< Failure code.
std::string m_message; ///< Optional message. Equal to "no message" when message is not available.
};
} // End namespace mqtt
} // End namespace components
} // End namespace osdev
#endif // OSDEV_COMPONENTS_MQTT_MQTTFAILURE_H