f45c31d8
 Peter M. Groen
MOve headers to i...
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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_TOKEN_H
#define OSDEV_COMPONENTS_MQTT_TOKEN_H
// std
#include <ostream>
#include <string>
// paho
#include <MQTTAsync.h>
namespace osdev {
namespace components {
namespace mqtt {
/*!
* \brief The Token class defines an operation token
*/
class Token
{
public:
/*! @brief Construct an invalid token.
* The token number is -1 in that case. The client is undefined, in this case empty.
*/
Token();
/*! @brief Constructs token for an operation originating from specific client wrapper.
* @param clientId - Identifies the client wrapper
* @param tokenNr - Identifies the operation done on that client.
*/
Token( const std::string &clientId, std::int32_t tokenNr );
/*! @return True when token has a valid token number, false otherwise. */
bool isValid() const { return -1 == m_token; }
/*! @return The operation token */
const std::string& clientId() const { return m_clientId; }
/*! @return The operation token */
std::int32_t token() const { return m_token; }
/*! @return True if Tokens have the same clientId and token number, false otherwise. */
bool equals( const Token &rhs ) const;
/*!
* @brief Token is ordered.
* First on lexical test of clientId and with same clientId on token number.
*/
bool smallerThan( const Token &rhs ) const;
private:
std::string m_clientId; ///< Identified the client
std::int32_t m_token; ///< Identifies the operation on that client.
};
/**
* @return True if Tokens have the same clientId and token number, false otherwise.
*/
inline bool operator==( const Token &lhs, const Token &rhs )
{
return lhs.equals( rhs );
}
inline bool operator==( const Token &lhs, std::int32_t rhs )
{
return lhs.token() == rhs;
}
inline bool operator==( std::int32_t lhs, const Token &rhs )
{
return lhs == rhs;
}
template <typename TLeft, typename TRight>
inline bool operator!=( const TLeft &lhs, const TRight &rhs )
{
return !( lhs == rhs );
}
/*!
* @return True if Token lhs is smaller than token rhs
*/
inline bool operator<( const Token &lhs, std::int32_t rhs )
{
return lhs.token() < rhs;
}
inline bool operator<( std::int32_t lhs, const Token &rhs )
{
return lhs < rhs.token();
}
inline bool operator<( const Token &lhs, const Token &rhs )
{
return lhs.smallerThan( rhs );
}
/*!
* @brief Stream operator for a Token
*/
std::ostream& operator<<( std::ostream &os, const Token &rhs );
} // End namespace mqtt
} // End namespace components
} // End namespace osdev
#endif // OSDEV_COMPONENTS_MQTT_TOKEN_H
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