#include <rpl_gtid_persist.h>

Public Member Functions
	Gtid_table_persistor ()=default

virtual	~Gtid_table_persistor ()=default

int	save (THD thd, const Gtid gtid)
	Insert the gtid into table. More...

int	save (const Gtid_set *gtid_set, bool compress=true)
	Insert the gtid set into table. More...

int	reset (THD *thd)
	Delete all rows from the table. More...

int	fetch_gtids (Gtid_set *gtid_set)
	Fetch gtids from gtid_executed table and store them into gtid_executed set. More...

int	compress (THD *thd)
	Compress the gtid_executed table completely by employing one or more transactions. More...

int	warn_or_err_on_explicit_modification (THD thd, Table_ref table)
	Push a warning to client if user is modifying the gtid_executed table explicitly by a non-XA transaction. More...

Static Public Attributes
static const uint	number_fields
	the number of fields in mysql.gtid_executed More...

Private Member Functions
int	compress_in_single_transaction (THD *thd, bool &is_complete)
	Compress the gtid_executed table, read each row by the PK(sid, tag, gno_start) in increasing order, compress the first consecutive range of gtids within a single transaction. More...

int	compress_first_consecutive_range (TABLE *table, bool &is_complete)
	Read each row by the PK(sid, tag, gno_start) in increasing order, compress the first consecutive range of gtids. More...

int	fill_fields (Field *fields, const char sid, const char *tag, rpl_gno gno_start, rpl_gno gno_end)
	Fill a gtid interval into fields of the gtid_executed table. More...

int	write_row (TABLE table, const char sid, const char *tag, rpl_gno gno_start, rpl_gno gno_end)
	Write a gtid interval into the gtid_executed table. More...

int	update_row (TABLE table, const char sid, const char *tag, rpl_gno gno_start, rpl_gno new_gno_end)
	Update a gtid interval in the gtid_executed table. More...

int	delete_all (TABLE *table)
	Delete all rows in the gtid_executed table. More...

std::string	encode_gtid_text (TABLE *table)
	Encode the current row fetched from the table into gtid text. More...

void	get_gtid_interval (TABLE *table, std::string &sid, std::string &tag, rpl_gno &gno_start, rpl_gno &gno_end)
	Get gtid interval from the the current row of the table. More...

int	save (TABLE table, const Gtid_set gtid_set)
	Insert the gtid set into table. More...

Gtid_table_persistor &	operator= (const Gtid_table_persistor &info)

	Gtid_table_persistor (const Gtid_table_persistor &info)

Private Attributes
std::atomic< int64 >	m_atomic_count {0}

Constructor & Destructor Documentation

◆ Gtid_table_persistor() [1/2]

Gtid_table_persistor::Gtid_table_persistor ( )

default

◆ ~Gtid_table_persistor()

virtual Gtid_table_persistor::~Gtid_table_persistor ( )

virtualdefault

◆ Gtid_table_persistor() [2/2]

Gtid_table_persistor::Gtid_table_persistor ( const Gtid_table_persistor & info )

private

Member Function Documentation

◆ compress()

int Gtid_table_persistor::compress ( THD * thd )

Compress the gtid_executed table completely by employing one or more transactions.

Parameters

thd	Thread requesting to compress the table

Return values

0	OK
1	The table was not found.
-1	Error

◆ compress_first_consecutive_range()

int Gtid_table_persistor::compress_first_consecutive_range	(	TABLE *	table,
		bool &	is_complete
	)

private

Read each row by the PK(sid, tag, gno_start) in increasing order, compress the first consecutive range of gtids.

For example, 1 1 2 2 3 3 6 6 7 7 8 8 After the compression, the gtids in the table is compressed as following: 1 3 6 6 7 7 8 8

Parameters

	table	Reference to a table object.
[out]	is_complete	True if the gtid_executed table is compressd completely.

Return values

0	OK.
-1	Error.

◆ compress_in_single_transaction()

int Gtid_table_persistor::compress_in_single_transaction	(	THD *	thd,
		bool &	is_complete
	)

private

Compress the gtid_executed table, read each row by the PK(sid, tag, gno_start) in increasing order, compress the first consecutive range of gtids within a single transaction.

Parameters

	thd	Thread requesting to compress the table
[out]	is_complete	True if the gtid_executed table is compressd completely.

Return values

0	OK
1	The table was not found.
-1	Error

◆ delete_all()

int Gtid_table_persistor::delete_all ( TABLE * table )

private

Delete all rows in the gtid_executed table.

Parameters

table Reference to a table object.

Return values

0	OK.
-1	Error.

◆ encode_gtid_text()

string Gtid_table_persistor::encode_gtid_text ( TABLE * table )

private

Encode the current row fetched from the table into gtid text.

Parameters

table Reference to a table object.

Return values

Return the encoded gtid text.

◆ fetch_gtids()

int Gtid_table_persistor::fetch_gtids ( Gtid_set * gtid_set )

Fetch gtids from gtid_executed table and store them into gtid_executed set.

Parameters

[out] gtid_set store gtids fetched from the gtid_executed table.

Return values

0	OK
1	The table was not found.
-1	Error

◆ fill_fields()

int Gtid_table_persistor::fill_fields	(	Field **	fields,
		const char *	sid,
		const char *	tag,
		rpl_gno	gno_start,
		rpl_gno	gno_end
	)

private

Fill a gtid interval into fields of the gtid_executed table.

Parameters

fields	Reference to table fields.
sid	The source id component of TSID (UUID)
tag	Tag component of a TSID
gno_start	The first GNO of the gtid interval.
gno_end	The last GNO of the gtid interval.

Return values

0	OK.
-1	Error.

◆ get_gtid_interval()

void Gtid_table_persistor::get_gtid_interval	(	TABLE *	table,
		std::string &	sid,
		std::string &	tag,
		rpl_gno &	gno_start,
		rpl_gno &	gno_end
	)

private

Get gtid interval from the the current row of the table.

Parameters

	table	Reference to a table object.
[out]	sid	The source id component of TSID (UUID)
[out]	tag	tag component of a TSID
[out]	gno_start	The first GNO of the gtid interval.
[out]	gno_end	The last GNO of the gtid interval.

◆ operator=()

Gtid_table_persistor & Gtid_table_persistor::operator= ( const Gtid_table_persistor & info )

private

◆ reset()

int Gtid_table_persistor::reset ( THD * thd )

Delete all rows from the table.

Parameters

thd	Thread requesting to reset the table

Return values

0	OK
1	The table was not found.
-1	Error

◆ save() [1/3]

int Gtid_table_persistor::save	(	const Gtid_set *	gtid_set,
		bool	compress = `true`
	)

Insert the gtid set into table.

Parameters

gtid_set	contains a set of gtid, which holds the sidno and the gno.
compress	notify to compress gtid_executed table

Return values

0	OK
-1	Error

◆ save() [2/3]

int Gtid_table_persistor::save	(	TABLE *	table,
		const Gtid_set *	gtid_set
	)

private

Insert the gtid set into table.

Parameters

table	The gtid_executed table.
gtid_set	Contains a set of gtid, which holds the sidno and the gno.

Return values

0	OK
-1	Error

◆ save() [3/3]

int Gtid_table_persistor::save	(	THD *	thd,
		const Gtid *	gtid
	)

Insert the gtid into table.

Parameters

thd	Thread requesting to save gtid into the table
gtid	holds the sidno and the gno.

Return values

0	OK
1	The table was not found.
-1	Error

◆ update_row()

int Gtid_table_persistor::update_row	(	TABLE *	table,
		const char *	sid,
		const char *	tag,
		rpl_gno	gno_start,
		rpl_gno	new_gno_end
	)

private

Update a gtid interval in the gtid_executed table.

locate the gtid interval by primary key (sid, tag, gno_start) to update it with the new_gno_end.

Parameters

table	Reference to a table object.
sid	The source id component of TSID (UUID)
tag	Tag component of a TSID
gno_start	The first GNO of the gtid interval.
new_gno_end	The new last GNO of the gtid interval.

Return values

0	OK.
-1	Error.

◆ warn_or_err_on_explicit_modification()

int Gtid_table_persistor::warn_or_err_on_explicit_modification	(	THD *	thd,
		Table_ref *	table
	)

inline

Push a warning to client if user is modifying the gtid_executed table explicitly by a non-XA transaction.

Push an error to client if user is modifying it explicitly by a XA transaction.

Parameters

thd	Thread requesting to access the table
table	The table is being accessed.

Return values

0	No warning or error was pushed to the client.
1	Push a warning to client.
2	Push an error to client.

◆ write_row()

int Gtid_table_persistor::write_row	(	TABLE *	table,
		const char *	sid,
		const char *	tag,
		rpl_gno	gno_start,
		rpl_gno	gno_end
	)

private

Write a gtid interval into the gtid_executed table.

Parameters

table	Reference to a table object.
sid	The source id component of TSID (UUID)
tag	Tag component of a TSID
gno_start	The first GNO of the gtid interval.
gno_end	The last GNO of the gtid interval.

Return values

0	OK.
-1	Error.

Member Data Documentation

◆ m_atomic_count

std::atomic<int64> Gtid_table_persistor::m_atomic_count {0}

private

◆ number_fields

const uint Gtid_table_persistor::number_fields

static

Initial value:

=

4

the number of fields in mysql.gtid_executed

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

sql/rpl_gtid_persist.h
sql/rpl_gtid_persist.cc

Public Member Functions

Static Public Attributes

Private Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ Gtid_table_persistor() [1/2]

◆ ~Gtid_table_persistor()

◆ Gtid_table_persistor() [2/2]

Member Function Documentation

◆ compress()

◆ compress_first_consecutive_range()

◆ compress_in_single_transaction()

◆ delete_all()

◆ encode_gtid_text()

◆ fetch_gtids()

◆ fill_fields()

◆ get_gtid_interval()

◆ operator=()

◆ reset()

◆ save() [1/3]

◆ save() [2/3]

◆ save() [3/3]

◆ update_row()

◆ warn_or_err_on_explicit_modification()

◆ write_row()

Member Data Documentation

◆ m_atomic_count

◆ number_fields