#include <log_event.h>

Inheritance diagram for Xid_apply_log_event:

Protected Member Functions
	Xid_apply_log_event (THD thd_arg, Log_event_header header_arg, Log_event_footer *footer_arg)

	Xid_apply_log_event (Log_event_header header_arg, Log_event_footer footer_arg)

	~Xid_apply_log_event () override=default

bool	ends_group () const override

enum_skip_reason	do_shall_skip (Relay_log_info *rli) override
	Decide if this event shall be skipped or not and the reason for skipping it. More...

int	do_apply_event (Relay_log_info const *rli) override
	Primitive to apply an event to the database. More...

int	do_apply_event_worker (Slave_worker *rli) override
	Worker commits Xid transaction and in case of its transactional info table marks the current group as done in the Coordinator's Group Assigned Queue. More...

virtual bool	do_commit (THD *thd_arg)=0

Protected Member Functions inherited from Log_event
uint32	write_header_to_memory (uchar *buf)
	Writes the common header of this event to the given memory buffer. More...

bool	write_header (Basic_ostream *ostream, size_t data_length)
	Writes the common-header of this event to the given output stream and updates the checksum. More...

bool	write_footer (Basic_ostream *ostream)

bool	need_checksum ()
	A decider of whether to trigger checksum computation or not. More...

enum_skip_reason	continue_group (Relay_log_info *rli)
	Helper function to ignore an event w.r.t. More...

virtual int	do_update_pos (Relay_log_info *rli)
	Advance relay log coordinates. More...

Additional Inherited Members
Public Types inherited from Log_event
enum	enum_skip_reason { EVENT_SKIP_NOT , EVENT_SKIP_IGNORE , EVENT_SKIP_COUNT }
	Enumeration of what kinds of skipping (and non-skipping) that can occur when the slave executes an event. More...

Public Member Functions inherited from Log_event
	Log_event (Log_event_header header, Log_event_footer footer, enum_event_cache_type cache_type_arg, enum_event_logging_type logging_type_arg)
	This minimal constructor is for when you are not even sure that there is a valid THD. More...

	Log_event (THD thd_arg, uint16 flags_arg, enum_event_cache_type cache_type_arg, enum_event_logging_type logging_type_arg, Log_event_header header, Log_event_footer *footer)

int	net_send (Protocol protocol, const char log_name, my_off_t pos)
	Only called by SHOW BINLOG EVENTS. More...

virtual int	pack_info (Protocol *protocol)
	Stores a string representation of this event in the Protocol. More...

virtual const char *	get_db ()

void *	operator new (size_t size)

bool	wrapper_my_b_safe_write (Basic_ostream ostream, const uchar buf, size_t data_length)
	Write the given buffer to the given output stream, updating the checksum if checksums are enabled. More...

virtual bool	write (Basic_ostream *ostream)

time_t	get_time ()
	Prints a "session_var=value" string. More...

virtual bool	write_data_header (Basic_ostream *)

virtual bool	write_data_body (Basic_ostream *)

virtual Log_event_type	get_type_code () const

virtual bool	is_sbr_logging_format () const
	Return true if the event has to be logged using SBR for DMLs. More...

virtual bool	is_rbr_logging_format () const
	Return true if the event has to be logged using RBR for DMLs. More...

bool	is_valid ()

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 (Log_event_header header, Log_event_footer footer)

virtual void	claim_memory_ownership (bool claim)
	Allow thread to CLAIM or DISCLAIM the ownership of this object depends on the parameter value passed. More...

virtual	~Log_event ()

void	register_temp_buf (char *buf, bool free_in_destructor=true)

void	free_temp_buf ()

virtual size_t	get_data_size ()

const char *	get_type_str () const
	Returns the human readable name of this event's type. More...

bool	is_mts_sequential_exec ()
	Is called from get_mts_execution_mode() to. More...

virtual uint8	get_mts_dbs (Mts_db_names arg, Rpl_filter rpl_filter)
	The method fills in pointers to event's database name c-strings to a supplied array. More...

bool	contains_partition_info (bool)

virtual uint8	mts_number_dbs ()

bool	is_mts_group_isolated ()

virtual bool	starts_group () const
	Events of a certain type can start or end a group of events treated transactionally wrt binlog. More...

int	apply_event (Relay_log_info *rli)
	Apply the event to the database. More...

int	apply_gtid_event (Relay_log_info *rli)
	Apply the GTID event in curr_group_data to the database. More...

int	update_pos (Relay_log_info *rli)
	Update the relay log position. More...

enum_skip_reason	shall_skip (Relay_log_info *rli)
	Decide if the event shall be skipped, and the reason for skipping it. More...

Static Public Member Functions inherited from Log_event
static void	init_show_field_list (mem_root_deque< Item * > *field_list)
	init_show_field_list() prepares the column names and types for the output of SHOW BINLOG EVENTS; it is used only by SHOW BINLOG EVENTS. More...

static void	operator delete (void *ptr, size_t)

static void *	operator new (size_t, void *ptr)

static void	operator delete (void , void )

static const char *	get_type_str (Log_event_type type)
	Returns the human readable name of the given event type. More...

static const char *	get_type_str (uint type)
	Get the name of an event type, or "Unknown" if out of range. More...

Public Attributes inherited from Log_event
char *	temp_buf

bool	m_free_temp_buf_in_destructor

ulong	exec_time

uint32	server_id

ulong	rbr_exec_mode
	A storage to cache the global system variable's value. More...

enum_event_cache_type	event_cache_type
	Defines the type of the cache, if any, where the event will be stored before being flushed to disk. More...

enum_event_logging_type	event_logging_type
	Defines when information, i.e. More...

ha_checksum	crc
	Placeholder for event checksum while writing to binlog. More...

ulong	mts_group_idx
	Index in `rli->gaq` array to indicate a group that this event is purging. More...

binary_log::Log_event_header *	common_header
	The Log_event_header class contains the variable present in the common header. More...

binary_log::Log_event_footer *	common_footer
	The Log_event_footer class contains the variable present in the common footer. More...

Relay_log_info *	worker
	MTS: associating the event with either an assigned Worker or Coordinator. More...

ulonglong	future_event_relay_log_pos
	A copy of the main rli value stored into event to pass to MTS worker rli. More...

THD *	thd

db_worker_hash_entry *	mts_assigned_partitions [MAX_DBS_IN_EVENT_MTS]
	Partition info associate with event to deliver to MTS event applier. More...

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 }

Constructor & Destructor Documentation

◆ Xid_apply_log_event() [1/2]

Xid_apply_log_event::Xid_apply_log_event	(	THD *	thd_arg,
		Log_event_header *	header_arg,
		Log_event_footer *	footer_arg
	)

inlineprotected

◆ Xid_apply_log_event() [2/2]

Xid_apply_log_event::Xid_apply_log_event	(	Log_event_header *	header_arg,
		Log_event_footer *	footer_arg
	)

inlineprotected

◆ ~Xid_apply_log_event()

Xid_apply_log_event::~Xid_apply_log_event ( )

overrideprotecteddefault

Member Function Documentation

◆ do_apply_event()

int Xid_apply_log_event::do_apply_event ( Relay_log_info const * rli )

overrideprotectedvirtual

Primitive to apply an event to the database.

This is where the change to the database is made.

Note: The primitive is protected instead of private, since there is a hierarchy of actions to be performed in some cases.

See also: Format_description_log_event::do_apply_event()

Parameters

rli	Pointer to relay log info structure

Return values

0	Event applied successfully
errno	Error code if event application failed

Commit operation expects the global transaction state variable 'xa_state'to be set to 'XA_NOTR'. In order to simulate commit failure we set the 'xa_state' to 'XA_IDLE' so that the commit reports 'ER_XAER_RMFAIL' error.

Reimplemented from Log_event.

◆ do_apply_event_worker()

int Xid_apply_log_event::do_apply_event_worker ( Slave_worker * w )

overrideprotectedvirtual

Worker commits Xid transaction and in case of its transactional info table marks the current group as done in the Coordinator's Group Assigned Queue.

Returns: zero as success or non-zero as an error

Reimplemented from Log_event.

◆ do_commit()

virtual bool Xid_apply_log_event::do_commit ( THD * thd_arg )

protectedpure virtual

Implemented in XA_prepare_log_event, and Xid_log_event.

◆ do_shall_skip()

Log_event::enum_skip_reason Xid_apply_log_event::do_shall_skip ( Relay_log_info * rli )

overrideprotectedvirtual

Decide if this event shall be skipped or not and the reason for skipping it.

The default implementation decide that the event shall be skipped if either:

the server id of the event is the same as the server id of the server and rli->replicate_same_server_id is true, or
if rli->slave_skip_counter is greater than zero.

See also: do_apply_event; do_update_pos

Return values

Log_event::EVENT_SKIP_NOT	The event shall not be skipped and should be applied.
Log_event::EVENT_SKIP_IGNORE	The event shall be skipped by just ignoring it, i.e., the slave skip counter shall not be changed. This happends if, for example, the originating server id of the event is the same as the server id of the slave.
Log_event::EVENT_SKIP_COUNT	The event shall be skipped because the slave skip counter was non-zero. The caller shall decrease the counter by one.

Reimplemented from Log_event.

◆ ends_group()

bool Xid_apply_log_event::ends_group ( ) const

inlineoverrideprotectedvirtual

Returns: true if the event ends a group (transaction) false otherwise

Reimplemented from Log_event.

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

sql/log_event.h
sql/log_event.cc

Protected Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ Xid_apply_log_event() [1/2]

◆ Xid_apply_log_event() [2/2]

◆ ~Xid_apply_log_event()

Member Function Documentation

◆ do_apply_event()

◆ do_apply_event_worker()

◆ do_commit()

◆ do_shall_skip()

◆ ends_group()