rpl_write_set_handler.cc File Reference

#include "sql/rpl_write_set_handler.h"
#include <inttypes.h>
#include <stddef.h>
#include <sys/types.h>
#include <map>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "extra/xxhash/my_xxhash.h"
#include "lex_string.h"
#include "m_ctype.h"
#include "my_base.h"
#include "my_dbug.h"
#include "my_inttypes.h"
#include "my_murmur3.h"
#include "mysql_com.h"
#include "sql-common/json_binary.h"
#include "sql-common/json_dom.h"
#include "sql/field.h"
#include "sql/key.h"
#include "sql/query_options.h"
#include "sql/rpl_transaction_write_set_ctx.h"
#include "sql/sql_class.h"
#include "sql/sql_const.h"
#include "sql/system_variables.h"
#include "sql/table.h"
#include "sql/transaction_info.h"
#include "template_utils.h"

Macros
#define	HASH_STRING_SEPARATOR   "½"

Functions
const char *	get_write_set_algorithm_string (unsigned int algorithm)
	Function that returns the write set extraction algorithm name. More...
template<class type >
uint64	calc_hash (ulong algorithm, type T, size_t len)
static void	debug_check_for_write_sets (std::vector< std::string > &key_list_to_hash, std::vector< uint64 > &hash_list)
static bool	generate_hash_pke (const std::string &pke, THD *thd, std::vector< std::string > &write_sets, std::vector< uint64 > &hash_list)
	Function to generate the hash of the string passed to this function. More...
static bool	generate_mv_hash_pke (const std::string &prefix_pke, THD *thd, Field *fld, std::vector< std::string > &write_sets, std::vector< uint64 > &hash_list)
	Function to generate set of hashes for a multi-valued key. More...
bool	add_pke (TABLE *table, THD *thd, const uchar *record)
	Function to add the hash of the PKE to the transaction context object. More...

Variables
const char *	transaction_write_set_hashing_algorithms []

Macro Definition Documentation

HASH_STRING_SEPARATOR

#define HASH_STRING_SEPARATOR   "½"

Function Documentation

add_pke()

bool add_pke	(	TABLE *	table,
		THD *	thd,
		const uchar *	record
	)

Function to add the hash of the PKE to the transaction context object.

Parameters

[in]	table	- TABLE object
[in]	thd	- THD object pointing to current thread.
[in]	record	- The record to process (record[0] or record[1]).

Returns

true if an issues exists adding the pke, false otherwise

calc_hash()

template<class type >

uint64 calc_hash	(	ulong	algorithm,
		type	T,
		size_t	len
	)

debug_check_for_write_sets()

static void debug_check_for_write_sets ( std::vector< std::string > &  key_list_to_hash, std::vector< uint64 > &  hash_list  )

static

generate_hash_pke()

static bool generate_hash_pke ( const std::string &  pke, THD *  thd, std::vector< std::string > &  write_sets, std::vector< uint64 > &  hash_list  )

static

Function to generate the hash of the string passed to this function.

Parameters

[in]	pke	- the string to be hashed.
[in]	thd	- THD object pointing to current thread.

Returns

true if a problem occurred on generation or write set tracking.

Parameters

[in]	write_sets	- list of all write sets
[in]	hash_list	- list of all hashes

generate_mv_hash_pke()

static bool generate_mv_hash_pke ( const std::string &  prefix_pke, THD *  thd, Field *  fld, std::vector< std::string > &  write_sets, std::vector< uint64 > &  hash_list  )

static

Function to generate set of hashes for a multi-valued key.

Parameters

[in]	prefix_pke	- stringified non-multi-valued prefix of key
[in]	thd	- THD object pointing to current thread.
[in]	fld	- multi-valued keypart's field

Returns

true if a problem occurred on generation or write set tracking.

Parameters

[in]	write_sets	- DEBUG ONLY, vector of added PKEs
[in]	hash_list	- DEBUG ONLY, list of all hashes

get_write_set_algorithm_string()

const char * get_write_set_algorithm_string

(

unsigned int

algorithm

)

Function that returns the write set extraction algorithm name.

Parameters

[in]

algorithm

The algorithm value

Returns

the algorithm name

Variable Documentation

transaction_write_set_hashing_algorithms

const char* transaction_write_set_hashing_algorithms[]

Initial value:

= {"OFF", "MURMUR32",
                                                          "XXHASH64", nullptr}