Gcs_default_logger Class Reference

Default logger which is internally used by GCS and XCOM if nothing else is injected by Group Replication. More...

#include <gcs_logging_system.h>

Inheritance diagram for Gcs_default_logger:

Public Member Functions
	Gcs_default_logger (Gcs_async_buffer *sink)
	~Gcs_default_logger () override=default
enum_gcs_error	initialize () override
	Default logger initialization method. More...
enum_gcs_error	finalize () override
	Default logger finalization method. More...
void	log_event (const gcs_log_level_t level, const std::string &message) override
	Asynchronously forwards the received message to a sink. More...
Public Member Functions inherited from Logger_interface
	~Logger_interface () override=default
	Define a virtual destructor as instances of this interface can be polymorphically used. More...
Public Member Functions inherited from Common_interface
virtual	~Common_interface ()=default
	Define a virtual destructor as instances of this interface can be polymorphically used. More...

Private Member Functions
	Gcs_default_logger (Gcs_default_logger &l)
Gcs_default_logger &	operator= (const Gcs_default_logger &l)

Private Attributes
Gcs_async_buffer *	m_sink
	Reference to an asynchronous buffer that encapsulates a sink. More...

Detailed Description

Default logger which is internally used by GCS and XCOM if nothing else is injected by Group Replication.

Constructor & Destructor Documentation

Gcs_default_logger() [1/2]

Gcs_default_logger::Gcs_default_logger ( Gcs_async_buffer *  sink )

explicit

~Gcs_default_logger()

Gcs_default_logger::~Gcs_default_logger ( )

overridedefault

Gcs_default_logger() [2/2]

Gcs_default_logger::Gcs_default_logger ( Gcs_default_logger &  l )

private

Member Function Documentation

finalize()

enum_gcs_error Gcs_default_logger::finalize ( )

overridevirtual

Default logger finalization method.

Return values

GCS_OK

Implements Common_interface.

initialize()

enum_gcs_error Gcs_default_logger::initialize ( )

overridevirtual

Default logger initialization method.

Return values

GCS_OK

Implements Common_interface.

log_event()

void Gcs_default_logger::log_event ( const gcs_log_level_t  level, const std::string &  message  )

overridevirtual

Asynchronously forwards the received message to a sink.

This method prepares the message and writes it to an in-memory buffer. If there is no free entry in the in-memory buffer, the call blocks until an entry becomes available.

Note that the write to the sink is done asynchronously.

This method shouldn't be invoked directly in the code, as it is wrapped by the MYSQL_GCS_LOG_[LEVEL] macros which deal with the rendering of the logging message into a final string that is then handed alongside with the level to this method.

Parameters

level	logging level of the message
message	rendered string of the logging message

Implements Logger_interface.

operator=()

Gcs_default_logger & Gcs_default_logger::operator= ( const Gcs_default_logger &  l )

private

Member Data Documentation

m_sink

Gcs_async_buffer* Gcs_default_logger::m_sink

private

Reference to an asynchronous buffer that encapsulates a sink.

---

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

• plugin/group_replication/libmysqlgcs/include/mysql/gcs/gcs_logging_system.h
• plugin/group_replication/libmysqlgcs/src/interface/gcs_logging_system.cc