Ignorable_log_event Class Reference

#include <log_event.h>

Inheritance diagram for Ignorable_log_event:

Collaboration diagram for Ignorable_log_event:

Public Member Functions
	Ignorable_log_event (THD *thd_arg)
	Ignorable_log_event (const char *buf, const Format_description_log_event *descr_event)
int	pack_info (Protocol *)
virtual Log_event_type	get_type_code ()
virtual bool	is_valid () const
virtual int	get_data_size ()
Public Member Functions inherited from Log_event
	Log_event (enum_event_cache_type cache_type_arg=EVENT_INVALID_CACHE, enum_event_logging_type logging_type_arg=EVENT_INVALID_LOGGING)
virtual void	print (FILE *file, PRINT_EVENT_INFO *print_event_info)=0
void	print_timestamp (IO_CACHE *file, time_t *ts)
void	print_header (IO_CACHE *file, PRINT_EVENT_INFO *print_event_info, bool is_more)
void	print_base64 (IO_CACHE *file, PRINT_EVENT_INFO *print_event_info, bool is_more)
bool	wrapper_my_b_safe_write (IO_CACHE *file, const uchar *buf, ulong data_length)
void	set_artificial_event ()
void	set_relay_log_event ()
bool	is_artificial_event () const
bool	is_relay_log_event () const
bool	is_ignorable_event () const
bool	is_no_filter_event () const
bool	is_using_trans_cache () const
bool	is_using_stmt_cache () const
bool	is_using_immediate_logging () const
	Log_event (const char *buf, const Format_description_log_event *description_event)
void	register_temp_buf (char *buf)
void	free_temp_buf ()
const char *	get_type_str ()

Additional Inherited Members
Public Types inherited from Log_event
enum	enum_skip_reason { EVENT_SKIP_NOT, EVENT_SKIP_IGNORE, EVENT_SKIP_COUNT }
typedef unsigned char	Byte
Static Public Member Functions inherited from Log_event
static Log_event *	read_log_event (IO_CACHE *file, const Format_description_log_event *description_event, my_bool crc_check)
static void *	operator new (size_t size)
static void	operator delete (void *ptr, size_t)
static void *	operator new (size_t, void *ptr)
static void	operator delete (void *, void *)
static Log_event *	read_log_event (const char *buf, uint event_len, const char **error, const Format_description_log_event *description_event, my_bool crc_check)
static const char *	get_type_str (Log_event_type type)
Public Attributes inherited from Log_event
my_off_t	log_pos
char *	temp_buf
struct timeval	when
ulong	exec_time
ulong	data_written
uint32	server_id
uint32	unmasked_server_id
uint16	flags
ulong	slave_exec_mode
enum_event_cache_type	event_cache_type
enum_event_logging_type	event_logging_type
ha_checksum	crc
ulong	mts_group_idx
Relay_log_info *	worker
ulonglong	future_event_relay_log_pos
uint8	checksum_alg
Protected Types inherited from Log_event
enum	enum_event_cache_type {   EVENT_INVALID_CACHE = 0, EVENT_STMT_CACHE, EVENT_TRANSACTIONAL_CACHE, EVENT_NO_CACHE,   EVENT_CACHE_COUNT }
enum	enum_event_logging_type { EVENT_INVALID_LOGGING = 0, EVENT_NORMAL_LOGGING, EVENT_IMMEDIATE_LOGGING, EVENT_CACHE_LOGGING_COUNT }

Detailed Description

Base class for ignorable log events. Events deriving from this class can be safely ignored by slaves that cannot recognize them. Newer slaves, will be able to read and handle them. This has been designed to be an open-ended architecture, so adding new derived events shall not harm the old slaves that support ignorable log event mechanism (they will just ignore unrecognized ignorable events).

Note

The only thing that makes an event ignorable is that it has the LOG_EVENT_IGNORABLE_F flag set. It is not strictly necessary that ignorable event types derive from Ignorable_log_event; they may just as well derive from Log_event and pass LOG_EVENT_IGNORABLE_F as argument to the Log_event constructor.

Definition at line 4722 of file log_event.h.

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

• sql/log_event.h
• sql/log_event.cc