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mariadb/sql/sql_show.h
Michael Widenius 5426facdcb Replication changes for CREATE OR REPLACE TABLE 
- CREATE TABLE is by default executed on the slave as CREATE OR REPLACE
- DROP TABLE is by default executed on the slave as DROP TABLE IF NOT EXISTS

This means that a slave will by default continue even if we try to create
a table that existed on the slave (the table will be deleted and re-created) or
if we try to drop a table that didn't exist on the slave.
This should be safe as instead of having the slave stop because of an inconsistency between
master and slave, it will fix the inconsistency.
Those that would prefer to get a stopped slave instead for the above cases can set slave_ddl_exec_mode to STRICT. 

- Ensure that a CREATE OR REPLACE TABLE which dropped a table is replicated
- DROP TABLE that generated an error on master is handled as an identical DROP TABLE on the slave (IF NOT EXISTS is not added in this case)
- Added slave_ddl_exec_mode variable to decide how DDL's are replicated

New logic for handling BEGIN GTID ... COMMIT from the binary log:

- When we find a BEGIN GTID, we start a transaction and set OPTION_GTID_BEGIN
- When we find COMMIT, we reset OPTION_GTID_BEGIN and execute the normal COMMIT code.
- While OPTION_GTID_BEGIN is set:
  - We don't generate implict commits before or after statements
  - All tables are regarded as transactional tables in the binary log (to ensure things are executed exactly as on the master)
- We reset OPTION_GTID_BEGIN also on rollback

This will help ensuring that we don't get any sporadic commits (and thus new GTID's) on the slave and will help keep the GTID's between master and slave in sync.


mysql-test/extra/rpl_tests/rpl_log.test:
  Added testing of mode slave_ddl_exec_mode=STRICT
mysql-test/r/mysqld--help.result:
  New help messages
mysql-test/suite/rpl/r/create_or_replace_mix.result:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/r/create_or_replace_row.result:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/r/create_or_replace_statement.result:
  Testing replication of create or replace
mysql-test/suite/rpl/r/rpl_gtid_startpos.result:
  Test must be run in slave_ddl_exec_mode=STRICT as part of the test depends on that DROP TABLE should fail on slave.
mysql-test/suite/rpl/r/rpl_row_log.result:
  Updated result
mysql-test/suite/rpl/r/rpl_row_log_innodb.result:
  Updated result
mysql-test/suite/rpl/r/rpl_row_show_relaylog_events.result:
  Updated result
mysql-test/suite/rpl/r/rpl_stm_log.result:
  Updated result
mysql-test/suite/rpl/r/rpl_stm_mix_show_relaylog_events.result:
  Updated result
mysql-test/suite/rpl/r/rpl_temp_table_mix_row.result:
  Updated result
mysql-test/suite/rpl/t/create_or_replace.inc:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_mix.cnf:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_mix.test:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_row.cnf:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_row.test:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_statement.cnf:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/create_or_replace_statement.test:
  Testing of CREATE OR REPLACE TABLE with replication
mysql-test/suite/rpl/t/rpl_gtid_startpos.test:
  Test must be run in slave_ddl_exec_mode=STRICT as part of the test depends on that DROP TABLE should fail on slave.
mysql-test/suite/rpl/t/rpl_stm_log.test:
  Removed some lines
mysql-test/suite/sys_vars/r/slave_ddl_exec_mode_basic.result:
  Testing of slave_ddl_exec_mode
mysql-test/suite/sys_vars/t/slave_ddl_exec_mode_basic.test:
  Testing of slave_ddl_exec_mode
sql/handler.cc:
  Regard all tables as transactional in commit if OPTION_GTID_BEGIN is set.
  This is to ensure that statments are not commited too early if non transactional tables are used.
sql/log.cc:
  Regard all tables as transactional in commit if OPTION_GTID_BEGIN is set.
  Also treat 'direct' log events as transactional (to get them logged as they where on the master)
sql/log_event.cc:
  Ensure that the new error from DROP TABLE when trying to drop a view is treated same as the old one.
  Store error code that slave expects in THD.
  Set OPTION_GTID_BEGIN if we find a BEGIN.
  Reset OPTION_GTID_BEGIN if we find a COMMIT.
sql/mysqld.cc:
  Added slave_ddl_exec_mode_options
sql/mysqld.h:
  Added slave_ddl_exec_mode_options
sql/rpl_gtid.cc:
  Reset OPTION_GTID_BEGIN if we record a gtid (safety)
sql/sql_class.cc:
  Regard all tables as transactional in commit if OPTION_GTID_BEGIN is set.
sql/sql_class.h:
  Added to THD: log_current_statement and slave_expected_error
sql/sql_insert.cc:
  Ensure that CREATE OR REPLACE is logged if table was deleted.
  Don't do implicit commit for CREATE if we are under OPTION_GTID_BEGIN
sql/sql_parse.cc:
  Change CREATE TABLE -> CREATE OR REPLACE TABLE for slaves
  Change DROP TABLE -> DROP TABLE IF EXISTS for slaves
  CREATE TABLE doesn't force implicit commit in case of OPTION_GTID_BEGIN
  Don't do commits before or after any statement if OPTION_GTID_BEGIN was set.
sql/sql_priv.h:
  Added OPTION_GTID_BEGIN
sql/sql_show.cc:
  Enhanced store_create_info() to also be able to handle CREATE OR REPLACE
sql/sql_show.h:
  Updated prototype
sql/sql_table.cc:
  Ensure that CREATE OR REPLACE is logged if table was deleted.
sql/sys_vars.cc:
  Added slave_ddl_exec_mode
sql/transaction.cc:
  Added warning if we got a GTID under OPTION_GTID_BEGIN
2014-02-05 19:01:59 +02:00

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/* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef SQL_SHOW_H
#define SQL_SHOW_H
#include "sql_list.h" /* List */
#include "handler.h" /* enum_schema_tables */
#include "table.h" /* enum_schema_table_state */
#include "my_apc.h"
/* Forward declarations */
class JOIN;
class String;
class THD;
class sp_name;
struct TABLE_LIST;
typedef class st_select_lex SELECT_LEX;
struct LEX;
typedef struct st_mysql_show_var SHOW_VAR;
typedef struct st_schema_table ST_SCHEMA_TABLE;
struct TABLE;
typedef struct system_status_var STATUS_VAR;
/* Used by handlers to store things in schema tables */
#define IS_FILES_FILE_ID 0
#define IS_FILES_FILE_NAME 1
#define IS_FILES_FILE_TYPE 2
#define IS_FILES_TABLESPACE_NAME 3
#define IS_FILES_TABLE_CATALOG 4
#define IS_FILES_TABLE_SCHEMA 5
#define IS_FILES_TABLE_NAME 6
#define IS_FILES_LOGFILE_GROUP_NAME 7
#define IS_FILES_LOGFILE_GROUP_NUMBER 8
#define IS_FILES_ENGINE 9
#define IS_FILES_FULLTEXT_KEYS 10
#define IS_FILES_DELETED_ROWS 11
#define IS_FILES_UPDATE_COUNT 12
#define IS_FILES_FREE_EXTENTS 13
#define IS_FILES_TOTAL_EXTENTS 14
#define IS_FILES_EXTENT_SIZE 15
#define IS_FILES_INITIAL_SIZE 16
#define IS_FILES_MAXIMUM_SIZE 17
#define IS_FILES_AUTOEXTEND_SIZE 18
#define IS_FILES_CREATION_TIME 19
#define IS_FILES_LAST_UPDATE_TIME 20
#define IS_FILES_LAST_ACCESS_TIME 21
#define IS_FILES_RECOVER_TIME 22
#define IS_FILES_TRANSACTION_COUNTER 23
#define IS_FILES_VERSION 24
#define IS_FILES_ROW_FORMAT 25
#define IS_FILES_TABLE_ROWS 26
#define IS_FILES_AVG_ROW_LENGTH 27
#define IS_FILES_DATA_LENGTH 28
#define IS_FILES_MAX_DATA_LENGTH 29
#define IS_FILES_INDEX_LENGTH 30
#define IS_FILES_DATA_FREE 31
#define IS_FILES_CREATE_TIME 32
#define IS_FILES_UPDATE_TIME 33
#define IS_FILES_CHECK_TIME 34
#define IS_FILES_CHECKSUM 35
#define IS_FILES_STATUS 36
#define IS_FILES_EXTRA 37
int store_create_info(THD *thd, TABLE_LIST *table_list, String *packet,
HA_CREATE_INFO *create_info_arg, bool show_database,
bool create_or_replace);
int view_store_create_info(THD *thd, TABLE_LIST *table, String *buff);
int copy_event_to_schema_table(THD *thd, TABLE *sch_table, TABLE *event_table);
bool append_identifier(THD *thd, String *packet, const char *name,
uint length);
void mysqld_list_fields(THD *thd,TABLE_LIST *table, const char *wild);
int mysqld_dump_create_info(THD *thd, TABLE_LIST *table_list, int fd);
bool mysqld_show_create(THD *thd, TABLE_LIST *table_list);
bool mysqld_show_create_db(THD *thd, char *dbname, HA_CREATE_INFO *create);
void mysqld_list_processes(THD *thd,const char *user,bool verbose);
int mysqld_show_status(THD *thd);
int mysqld_show_variables(THD *thd,const char *wild);
bool mysqld_show_storage_engines(THD *thd);
bool mysqld_show_authors(THD *thd);
bool mysqld_show_contributors(THD *thd);
bool mysqld_show_privileges(THD *thd);
char *make_backup_log_name(char *buff, const char *name, const char* log_ext);
void calc_sum_of_all_status(STATUS_VAR *to);
void append_definer(THD *thd, String *buffer, const LEX_STRING *definer_user,
const LEX_STRING *definer_host);
int add_status_vars(SHOW_VAR *list);
void remove_status_vars(SHOW_VAR *list);
void init_status_vars();
void free_status_vars();
void reset_status_vars();
bool show_create_trigger(THD *thd, const sp_name *trg_name);
void view_store_options(THD *thd, TABLE_LIST *table, String *buff);
void init_fill_schema_files_row(TABLE* table);
bool schema_table_store_record(THD *thd, TABLE *table);
void initialize_information_schema_acl();
ST_SCHEMA_TABLE *find_schema_table(THD *thd, const char* table_name);
ST_SCHEMA_TABLE *get_schema_table(enum enum_schema_tables schema_table_idx);
int make_schema_select(THD *thd, SELECT_LEX *sel,
enum enum_schema_tables schema_table_idx);
int mysql_schema_table(THD *thd, LEX *lex, TABLE_LIST *table_list);
bool get_schema_tables_result(JOIN *join,
enum enum_schema_table_state executed_place);
enum enum_schema_tables get_schema_table_idx(ST_SCHEMA_TABLE *schema_table);
/* These functions were under INNODB_COMPATIBILITY_HOOKS */
int get_quote_char_for_identifier(THD *thd, const char *name, uint length);
THD *find_thread_by_id(longlong id, bool query_id= false);
class select_result_explain_buffer;
/*
SHOW EXPLAIN request object.
*/
class Show_explain_request : public Apc_target::Apc_call
{
public:
THD *target_thd; /* thd that we're running SHOW EXPLAIN for */
THD *request_thd; /* thd that run SHOW EXPLAIN command */
/* If true, there was some error when producing EXPLAIN output. */
bool failed_to_produce;
/* SHOW EXPLAIN will be stored here */
select_result_explain_buffer *explain_buf;
/* Query that we've got SHOW EXPLAIN for */
String query_str;
/* Overloaded virtual function */
void call_in_target_thread();
};
/* Handle the ignored database directories list for SHOW/I_S. */
bool ignore_db_dirs_init();
void ignore_db_dirs_free();
void ignore_db_dirs_reset();
bool ignore_db_dirs_process_additions();
bool push_ignored_db_dir(char *path);
extern char *opt_ignore_db_dirs;
#endif /* SQL_SHOW_H */
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