mirror of
https://github.com/Telecominfraproject/wlan-cloud-lib-cppkafka.git
synced 2025-11-04 04:27:48 +00:00
87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
/*
|
|
* Copyright (c) 2017, Matias Fontanini
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following disclaimer
|
|
* in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
#ifndef CPPKAFKA_MESSAGE_INTERNAL_H
|
|
#define CPPKAFKA_MESSAGE_INTERNAL_H
|
|
|
|
#include <memory>
|
|
|
|
namespace cppkafka {
|
|
|
|
class Message;
|
|
|
|
class Internal {
|
|
public:
|
|
virtual ~Internal() = default;
|
|
};
|
|
using InternalPtr = std::shared_ptr<Internal>;
|
|
|
|
/**
|
|
* \brief Private message data structure
|
|
*/
|
|
class MessageInternal {
|
|
public:
|
|
MessageInternal(void* user_data, std::shared_ptr<Internal> internal);
|
|
static std::unique_ptr<MessageInternal> load(Message& message);
|
|
void* get_user_data() const;
|
|
InternalPtr get_internal() const;
|
|
private:
|
|
void* user_data_;
|
|
InternalPtr internal_;
|
|
};
|
|
|
|
template <typename BuilderType>
|
|
class MessageInternalGuard {
|
|
public:
|
|
MessageInternalGuard(BuilderType& builder)
|
|
: builder_(builder),
|
|
user_data_(builder.user_data()) {
|
|
if (builder_.internal()) {
|
|
// Swap contents with user_data
|
|
ptr_.reset(new MessageInternal(user_data_, builder_.internal()));
|
|
builder_.user_data(ptr_.get()); //overwrite user data
|
|
}
|
|
}
|
|
~MessageInternalGuard() {
|
|
//Restore user data
|
|
builder_.user_data(user_data_);
|
|
}
|
|
void release() {
|
|
ptr_.release();
|
|
}
|
|
private:
|
|
BuilderType& builder_;
|
|
std::unique_ptr<MessageInternal> ptr_;
|
|
void* user_data_;
|
|
};
|
|
|
|
}
|
|
|
|
#endif //CPPKAFKA_MESSAGE_INTERNAL_H
|