25b0d2f8
 Peter M. Groen
Setting up Loggin...
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#pragma once
// std
#include <string>
namespace osdev {
namespace components {
namespace mqtt {
/**
* @brief Set the current thread context
* The context is restored to the previous context when this object goes out of scope.
* @note This object is meat to be used on the stack.
*/
class ThreadContextScope
{
public:
/**
* @brief Construct a scoped object that sets the current thread context.
* @param context The context that will be used by the loggin framework.
*/
explicit ThreadContextScope( const std::string &context );
~ThreadContextScope();
// Non copyable and non movable
ThreadContextScope( const ThreadContextScope& ) = delete;
ThreadContextScope& operator=( const ThreadContextScope& ) = delete;
ThreadContextScope( ThreadContextScope&& ) = delete;
ThreadContextScope& operator=( ThreadContextScope&& ) = delete;
private:
std::string m_previousContext; ///< Copy of the previous context.
};
/**
* @brief Add context to a thread.
* For every thread only one specific instance of this object will exist.
* @note Contexts can only be set by using a ThreadContextScope object.
*/
class ThreadContext
{
// Contexts can only be set by using the ThreadContextScope object.
friend class ThreadContextScope;
public:
static ThreadContext& instance();
/**
* @briefReturn the thread context.
*/
void setContext( const std::string &contextString)
{
m_context = contextString;
}
/**
* Construct a ThreadContext object.
* The context is set to "default"
*/
ThreadContext();
// Non copyable and non moveable
ThreadContext(const ThreadContext&) = delete;
ThreadContext& operator=(const ThreadContext&) = delete;
ThreadContext(ThreadContext&&) = delete;
ThreadContext& operator=(ThreadContext&&) = delete;
std::string m_context; ///< The context string
};
} // End namespace mqtt
} // End namespace components
} // End namespace osdev
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