Silence all errors and warnings reported when performing a write to a log table. More...

Inheritance diagram for Silence_log_table_errors:

Public Member Functions
	Silence_log_table_errors ()

bool	handle_condition (THD , uint, const char , Sql_condition::enum_severity_level , const char msg) override
	Handle a sql condition. More...

const char *	message () const

Private Attributes
char	m_message [MYSQL_ERRMSG_SIZE]

Additional Inherited Members
Protected Member Functions inherited from Internal_error_handler
	Internal_error_handler ()

Internal_error_handler *	prev_internal_handler () const

virtual	~Internal_error_handler ()=default

Detailed Description

Silence all errors and warnings reported when performing a write to a log table.

Errors and warnings are not reported to the client or SQL exception handlers, so that the presence of logging does not interfere and affect the logic of an application.

Constructor & Destructor Documentation

◆ Silence_log_table_errors()

Silence_log_table_errors::Silence_log_table_errors ( )

inline

Member Function Documentation

◆ handle_condition()

bool Silence_log_table_errors::handle_condition	(	THD *	thd,
		uint	sql_errno,
		const char *	sqlstate,
		Sql_condition::enum_severity_level *	level,
		const char *	msg
	)

inlineoverridevirtual

Handle a sql condition.

This method can be implemented by a subclass to achieve any of the following:

mask a warning/error internally, prevent exposing it to the user,
mask a warning/error and throw another one instead. When this method returns true, the sql condition is considered 'handled', and will not be propagated to upper layers. It is the responsibility of the code installing an internal handler to then check for trapped conditions, and implement logic to recover from the anticipated conditions trapped during runtime.

This mechanism is similar to C++ try/throw/catch:

'try' correspond to THD::push_internal_handler(),
'throw' correspond to my_error(), which invokes my_message_sql(),
'catch' correspond to checking how/if an internal handler was invoked, before removing it from the exception stack with THD::pop_internal_handler().

Parameters

thd	the calling thread
sql_errno	the error number for the condition raised.
sqlstate	the SQLSTATE for the condition raised.
level	the severity level for the condition raised.
msg	the error message for the condition raised.

Returns: true if the condition is handled

Implements Internal_error_handler.

◆ message()

const char * Silence_log_table_errors::message ( ) const

inline

Member Data Documentation

◆ m_message

char Silence_log_table_errors::m_message[MYSQL_ERRMSG_SIZE]

private

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

sql/log.cc

Public Member Functions

Private Attributes

Additional Inherited Members