Log_resource Class Reference

This is the base class that the logic of collecting a MySQL server instance resources log will call. More...

#include <log_resource.h>

Inheritance diagram for Log_resource:

Public Member Functions
	Log_resource (Json_dom *json_arg)
	Log_resource constructor. More...
virtual	~Log_resource ()
	Destructor. More...
Json_dom *	get_json ()
	Return the pointer to the JSON object that should be used to fill the resource log information. More...
virtual void	lock ()=0
	Lock the resource avoiding updates. More...
virtual void	unlock ()=0
	Unlock the resource allowing updates. More...
virtual bool	collect_info ()=0
	Collect resource log information. More...

Static Public Member Functions
static int	dummy_function_to_ensure_we_are_linked_into_the_server ()
	There must be one function of this kind in order for the symbols in the server's dynamic library to be visible to plugins. More...

Private Attributes
Json_dom *	json = nullptr

Detailed Description

This is the base class that the logic of collecting a MySQL server instance resources log will call.

It basically contains lock, unlock and collect functions that shall be overridden by more specialized classes to handle the specific cases of resources participating in the process.

Constructor & Destructor Documentation

Log_resource()

Log_resource::Log_resource ( Json_dom *  json_arg )

inline

Log_resource constructor.

Parameters

[in]

json_arg

the pointer to the JSON object to be populated with the resource log information.

~Log_resource()

virtual Log_resource::~Log_resource ( )

inlinevirtual

Destructor.

This function will point the JSON object to nullptr.

Member Function Documentation

collect_info()

virtual bool Log_resource::collect_info ( )

pure virtual

Collect resource log information.

Returns

false on success. true if there was an error collecting the information.

Implemented in Log_resource_mi_wrapper, Log_resource_binlog_wrapper, Log_resource_gtid_state_wrapper, and Log_resource_hton_wrapper.

dummy_function_to_ensure_we_are_linked_into_the_server()

int Log_resource::dummy_function_to_ensure_we_are_linked_into_the_server ( )

static

There must be one function of this kind in order for the symbols in the server's dynamic library to be visible to plugins.

get_json()

Json_dom * Log_resource::get_json ( )

inline

Return the pointer to the JSON object that should be used to fill the resource log information.

Returns

the Json_object pointer to be filled with the log information.

lock()

virtual void Log_resource::lock ( )

pure virtual

Lock the resource avoiding updates.

Implemented in Log_resource_mi_wrapper, Log_resource_binlog_wrapper, Log_resource_gtid_state_wrapper, and Log_resource_hton_wrapper.

unlock()

virtual void Log_resource::unlock ( )

pure virtual

Unlock the resource allowing updates.

Implemented in Log_resource_mi_wrapper, Log_resource_binlog_wrapper, Log_resource_gtid_state_wrapper, and Log_resource_hton_wrapper.

Member Data Documentation

json

Json_dom* Log_resource::json = nullptr

private

---

The documentation for this class was generated from the following files:

• sql/log_resource.h
• sql/log_resource.cc