persisted_variable.cc File Reference

#include "sql/persisted_variable.h"
#include "my_config.h"
#include <assert.h>
#include <ctype.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <algorithm>
#include <array>
#include <iomanip>
#include <memory>
#include <new>
#include <utility>
#include "mysql/components/library_mysys/my_hex_tools.h"
#include "keyring_operations_helper.h"
#include "lex_string.h"
#include "m_ctype.h"
#include "m_string.h"
#include "my_aes.h"
#include "my_compiler.h"
#include "my_default.h"
#include "my_getopt.h"
#include "my_io.h"
#include "my_loglevel.h"
#include "my_macros.h"
#include "my_rnd.h"
#include "my_sys.h"
#include "my_thread.h"
#include "mysql/components/services/bits/psi_bits.h"
#include "mysql/components/services/bits/psi_file_bits.h"
#include "mysql/components/services/bits/psi_memory_bits.h"
#include "mysql/components/services/bits/psi_mutex_bits.h"
#include "mysql/components/services/log_builtins.h"
#include "mysql/components/services/log_shared.h"
#include "mysql/components/services/system_variable_source_type.h"
#include "mysql/psi/mysql_file.h"
#include "mysql/psi/mysql_memory.h"
#include "mysql/psi/mysql_mutex.h"
#include "mysql/status_var.h"
#include "mysql_version.h"
#include "mysqld_error.h"
#include "prealloced_array.h"
#include "scope_guard.h"
#include "sql-common/json_dom.h"
#include "sql/auth/auth_acls.h"
#include "sql/auth/auth_internal.h"
#include "sql/auth/sql_security_ctx.h"
#include "sql/current_thd.h"
#include "sql/debug_sync.h"
#include "sql/derror.h"
#include "sql/item.h"
#include "sql/log.h"
#include "sql/mysqld.h"
#include "sql/server_component/mysql_server_keyring_lockable_imp.h"
#include "sql/set_var.h"
#include "sql/sql_class.h"
#include "sql/sql_error.h"
#include "sql/sql_lex.h"
#include "sql/sql_list.h"
#include "sql/sql_show.h"
#include "sql/sys_vars_shared.h"
#include "sql/thr_malloc.h"
#include "sql_string.h"
#include "template_utils.h"
#include "thr_mutex.h"
#include "typelib.h"

Classes
struct	sort_tv_by_timestamp
	A comparison operator to sort persistent variables entries by timestamp. More...

Namespaces
namespace	anonymous_namespace{persisted_variable.cc}

Functions
void	my_init_persist_psi_keys (void)
	CLASS Persisted_variables_cache Holds <name,value> pair of all options which needs to be persisted to a file. More...
std::string	anonymous_namespace{persisted_variable.cc}::tolower_varname (const char *name)
static bool	check_boolean_value (const char *value, String &bool_str)
	For boolean variable types do validation on what value is set for the variable and then report error in case an invalid value is set. More...
static bool	format_json (const st_persist_var &entry, Json_object &section_object)
static bool	add_json_object (Json_object &section_object, Json_object &json_object, const char *key_section)
static bool	format_set (Persisted_variables_uset &section, string key_section, Json_object &json_object)
static bool	format_map (Persisted_variables_umap &section, string key_section, Json_object &json_object)
static bool	extract_variable_value_and_metadata (const Json_object *json_object, st_persist_var &output)
static bool	extract_set (const Json_object &json_object, const std::string set_key, Persisted_variables_uset &output)
static bool	extract_map (const Json_object &json_object, const std::string map_key, Persisted_variables_umap &output)
static bool	extract_string (Json_object *obj, const std::string &key, std::string &value)

Variables
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_value [] = "Value"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_metadata [] = "Metadata"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_timestamp [] = "Timestamp"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_user [] = "User"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_host [] = "Host"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_dynamic_parse_early_variables []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_sensitive_dynamic_variables []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_dynamic_variables [] = "mysql_dynamic_variables"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_static_parse_early_variables []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_sensitive_static_variables []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_static_variables [] = "mysql_static_variables"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_sensitive_variables [] = "mysql_sensitive_variables"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_master_key_id [] = "master_key_id"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_file_key [] = "file_key"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_file_key_iv [] = "file_key_iv"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_key_encryption_algorithm [] = "key_encryption_algorithm"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_data_encryption_algorithm [] = "data_encryption_algorithm"
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_sensitive_variables_iv []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_sensitive_variables_blob []
constexpr char	anonymous_namespace{persisted_variable.cc}::s_key_mysql_encryption_algorithm_default [] = "AES_256_CBC"
PSI_file_key	key_persist_file_cnf
static PSI_file_info	all_persist_files []
PSI_mutex_key	key_persist_file
PSI_mutex_key	key_persist_variables
static PSI_mutex_info	all_persist_mutexes []
PSI_memory_key	key_memory_persisted_variables
static PSI_memory_info	all_options []

Function Documentation

add_json_object()

static bool add_json_object ( Json_object &  section_object, Json_object &  json_object, const char *  key_section  )

static

check_boolean_value()

static bool check_boolean_value ( const char *  value, String &  bool_str  )

static

For boolean variable types do validation on what value is set for the variable and then report error in case an invalid value is set.

Parameters

[in]	value	Value which needs to be checked for.
[out]	bool_str	Target String into which correct value needs to be stored after validation.

Returns

true Failure if value is set to anything other than "true", "on", "1", "false" , "off", "0"

false Success

extract_map()

static bool extract_map ( const Json_object &  json_object, const std::string  map_key, Persisted_variables_umap &  output  )

static

extract_set()

static bool extract_set ( const Json_object &  json_object, const std::string  set_key, Persisted_variables_uset &  output  )

static

extract_string()

static bool extract_string ( Json_object *  obj, const std::string &  key, std::string &  value  )

static

extract_variable_value_and_metadata()

static bool extract_variable_value_and_metadata ( const Json_object *  json_object, st_persist_var &  output  )

static

format_json()

static bool format_json ( const st_persist_var &  entry, Json_object &  section_object  )

static

format_map()

static bool format_map ( Persisted_variables_umap &  section, string  key_section, Json_object &  json_object  )

static

format_set()

static bool format_set ( Persisted_variables_uset &  section, string  key_section, Json_object &  json_object  )

static

my_init_persist_psi_keys()

void my_init_persist_psi_keys

(

void

)

CLASS Persisted_variables_cache Holds <name,value> pair of all options which needs to be persisted to a file.

OVERVIEW

When first SET PERSIST statement is executed we instantiate Persisted_variables_cache which loads the config file if present into m_persisted_dynamic_variables set. This is a singleton operation. m_persisted_dynamic_variables is an in-memory copy of config file itself. If the SET statement passes then this in-memory is updated and flushed to file as an atomic operation.

Next SET PERSIST statement would only update the in-memory copy and sync to config file instead of loading the file again.

Variable Documentation

all_options

PSI_memory_info all_options[]

static

Initial value:

= {
    {&key_memory_persisted_variables, "persisted_options_root", 0,
     PSI_FLAG_ONLY_GLOBAL_STAT, PSI_DOCUMENT_ME}}

all_persist_files

PSI_file_info all_persist_files[]

static

Initial value:

= {
    {&key_persist_file_cnf, "cnf", 0, 0, PSI_DOCUMENT_ME}}

all_persist_mutexes

PSI_mutex_info all_persist_mutexes[]

static

Initial value:

= {
    {&key_persist_file, "m_LOCK_persist_file", 0, 0, PSI_DOCUMENT_ME},
    {&key_persist_variables, "m_LOCK_persist_variables", 0, 0,
     PSI_DOCUMENT_ME}}

key_memory_persisted_variables

PSI_memory_key key_memory_persisted_variables

key_persist_file

PSI_mutex_key key_persist_file

key_persist_file_cnf

PSI_file_key key_persist_file_cnf

key_persist_variables

PSI_mutex_key key_persist_variables