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test_sql_discovery storage engine

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use it to test main test cases with need_full_discover_for_existence > 0
This commit is contained in:
Sergei Golubchik 2013-04-09 16:07:35 +02:00
parent 4853c7192d
commit 2d788ff5ca
19 changed files with 565 additions and 18 deletions
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9
sql/sql_base.cc
View file

@ -713,15 +713,6 @@ end:
*/
share= (TABLE_SHARE*) 1;
}
else
{
/*
To be able perform any operation on table we should own
some kind of metadata lock on it.
*/
DBUG_ASSERT(thd->mdl_context.is_lock_owner(MDL_key::TABLE, db, table_name,
MDL_SHARED));
}
mysql_mutex_unlock(&LOCK_open);
DBUG_RETURN(share);

13
sql/sql_rename.cc
View file

@ -32,6 +32,9 @@
static TABLE_LIST *rename_tables(THD *thd, TABLE_LIST *table_list,
bool skip_error);
static bool do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db,
char *new_table_name, char *new_table_alias,
bool skip_error);
static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list);
@ -144,10 +147,6 @@ bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent)
MYSQL_OPEN_SKIP_TEMPORARY))
goto err;
for (ren_table= table_list; ren_table; ren_table= ren_table->next_local)
tdc_remove_table(thd, TDC_RT_REMOVE_ALL, ren_table->db,
ren_table->table_name, FALSE);
error=0;
/*
An exclusive lock on table names is satisfactory to ensure
@ -235,7 +234,7 @@ static TABLE_LIST *reverse_table_list(TABLE_LIST *table_list)
true rename failed
*/
bool
static bool
do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db, char *new_table_name,
char *new_table_alias, bool skip_error)
{
@ -269,6 +268,10 @@ do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db, char *new_table_name,
if (old_exists)
{
DBUG_ASSERT(!thd->locked_tables_mode);
tdc_remove_table(thd, TDC_RT_REMOVE_ALL,
ren_table->db, ren_table->table_name, false);
if (hton != view_pseudo_hton)
{
if (!(rc= mysql_rename_table(hton, ren_table->db, old_alias,

3
sql/sql_rename.h
View file

@ -20,8 +20,5 @@ class THD;
struct TABLE_LIST;
bool mysql_rename_tables(THD *thd, TABLE_LIST *table_list, bool silent);
bool do_rename(THD *thd, TABLE_LIST *ren_table, char *new_db,
char *new_table_name, char *new_table_alias,
bool skip_error);
#endif /* SQL_RENAME_INCLUDED */

1
sql/sql_table.cc
View file

@ -22,7 +22,6 @@
#include "unireg.h"
#include "debug_sync.h"
#include "sql_table.h"
#include "sql_rename.h" // do_rename
#include "sql_parse.h" // test_if_data_home_dir
#include "sql_cache.h" // query_cache_*
#include "sql_base.h" // open_table_uncached, lock_table_names

2
storage/test_sql_discovery/CMakeLists.txt Normal file
View file

@ -0,0 +1,2 @@
MYSQL_ADD_PLUGIN(test_sql_discovery test_sql_discovery.cc STORAGE_ENGINE
COMPONENT Test)

3
storage/test_sql_discovery/mysql-test/archive/discover.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source discover.test

11
storage/test_sql_discovery/mysql-test/main/r/partition_disabled.rdiff Normal file
View file

@ -0,0 +1,11 @@
--- r/partition_disabled.result 2013-04-07 12:36:57.000000000 +0200
+++ /usr/home/serg/Abk/mysql/10.0-serg/storage/test_sql_discovery/mysql-test/main/r/partition_disabled.reject 2013-04-07 23:19:14.000000000 +0200
@@ -3,7 +3,7 @@
SELECT * FROM t1;
ERROR HY000: The MariaDB server is running with the --skip-partition option so it cannot execute this statement
TRUNCATE TABLE t1;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: The MariaDB server is running with the --skip-partition option so it cannot execute this statement
ANALYZE TABLE t1;
Table Op Msg_type Msg_text
test.t1 analyze Error The MariaDB server is running with the --skip-partition option so it cannot execute this statement

11
storage/test_sql_discovery/mysql-test/main/r/plugin.rdiff Normal file
View file

@ -0,0 +1,11 @@
--- r/plugin.result 2013-02-21 19:46:59.000000000 +0100
+++ r/plugin.reject 2013-02-27 11:13:22.000000000 +0100
@@ -71,6 +71,8 @@
SELECT * FROM t2;
ERROR 42000: Unknown storage engine 'EXAMPLE'
DROP TABLE t2;
+Warnings:
+Error 1286 Unknown storage engine 'EXAMPLE'
UNINSTALL PLUGIN EXAMPLE;
ERROR 42000: PLUGIN EXAMPLE does not exist
UNINSTALL PLUGIN non_exist;

3
storage/test_sql_discovery/mysql-test/main/t/create.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source create.test

3
storage/test_sql_discovery/mysql-test/main/t/drop.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source drop.test

3
storage/test_sql_discovery/mysql-test/main/t/mdl_sync.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source mdl_sync.test

3
storage/test_sql_discovery/mysql-test/main/t/partition_disabled.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source partition_disabled.test

3
storage/test_sql_discovery/mysql-test/main/t/plugin.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source plugin.test

3
storage/test_sql_discovery/mysql-test/main/t/rename.test Normal file
View file

@ -0,0 +1,3 @@
# run the normal test file with need_full_discover_for_existence>0
--source ../sql_discovery/inc.inc
--source rename.test

4
storage/test_sql_discovery/mysql-test/sql_discovery/inc.inc Normal file
View file

@ -0,0 +1,4 @@
if (`SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.ENGINES WHERE engine = 'test_sql_discovery' AND support='YES'`)
{
--skip Test requires test_sql_discovery engine
}

1
storage/test_sql_discovery/mysql-test/sql_discovery/inc.opt Normal file
View file

@ -0,0 +1 @@
--plugin-load=$HA_TEST_SQL_DISCOVERY_SO

199
storage/test_sql_discovery/mysql-test/sql_discovery/simple.result Normal file
View file

@ -0,0 +1,199 @@
show variables like 'test_sql_discovery%';
Variable_name Value
test_sql_discovery_statement
test_sql_discovery_write_frm ON
set sql_quote_show_create=0;
create table t1 (a int) engine=test_sql_discovery;
ERROR HY000: Can't create table 'test.t1' (errno: 131 "Command not supported by database")
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
set @@test_sql_discovery_statement='t1:foobar bwa-ha-ha';
select * from t0;
ERROR 42S02: Table 'test.t0' doesn't exist
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1064 You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'foobar bwa-ha-ha' at line 1
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:select 1';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'select 1'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int primary key) partition by hash(id) partitions 2';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1290 The MariaDB server is running with the --skip-partition option so it cannot execute this statement
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int) union=(t3,t4)';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 (a int) union=(t3,t4)'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 like t2';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 like t2'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 select * from t2';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 select * from t2'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int) index directory="/tmp"';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 (a int) index directory="/tmp"'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int) data directory="/tmp"';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 (a int) data directory="/tmp"'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int) engine=myisam';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table t1 (a int) engine=myisam'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create temporary table t1 (a int)';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create temporary table t1 (a int)'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table if not exists t1 (a int)';
select * from t1;
ERROR 42S02: Table 'test.t1' doesn't exist
show warnings;
Level Code Message
Error 1939 Engine TEST_SQL_DISCOVERY failed to discover table `test`.`t1` with 'create table if not exists t1 (a int)'
Error 1146 Table 'test.t1' doesn't exist
Error 1030 Got error 130 "Incorrect file format" from storage engine
set @@test_sql_discovery_statement='t1:create table t1 (a int)';
select * from t1;
a
show create table t1;
Table Create Table
t1 CREATE TABLE t1 (
a int(11) DEFAULT NULL
) ENGINE=TEST_SQL_DISCOVERY DEFAULT CHARSET=latin1
drop table t1;
set @@test_sql_discovery_statement='t1:create table t2 (a int)';
select * from t1;
a
select * from t2;
ERROR 42S02: Table 'test.t2' doesn't exist
drop table t1;
set @@test_sql_discovery_statement='t1:
create table t1 (
a int not null default 5 primary key,
b timestamp,
c tinyblob,
d decimal(5,2),
e varchar(30) character set ascii,
f geometry not null,
index (d,b),
unique index (c(10)),
fulltext (e),
spatial (f)
) comment="abc" default character set utf8 max_rows=100 min_rows=10 checksum=1';
show status like 'handler_discover';
Variable_name Value
Handler_discover 13
show create table t1;
Table Create Table
t1 CREATE TABLE t1 (
a int(11) NOT NULL DEFAULT '5',
b timestamp NOT NULL DEFAULT '0000-00-00 00:00:00',
c tinyblob,
d decimal(5,2) DEFAULT NULL,
e varchar(30) CHARACTER SET ascii DEFAULT NULL,
f geometry NOT NULL,
PRIMARY KEY (a),
UNIQUE KEY c (c(10)),
KEY d (d,b),
SPATIAL KEY f (f),
FULLTEXT KEY e (e)
) ENGINE=TEST_SQL_DISCOVERY DEFAULT CHARSET=utf8 MIN_ROWS=10 MAX_ROWS=100 CHECKSUM=1 COMMENT='abc'
show status like 'handler_discover';
Variable_name Value
Handler_discover 14
----
t1.frm
----
show open tables from test;
Database Table In_use Name_locked
test t1 0 0
select * from t1;
a b c d e f
show status like 'handler_discover';
Variable_name Value
Handler_discover 14
flush tables;
select * from t1;
a b c d e f
show status like 'handler_discover';
Variable_name Value
Handler_discover 14
drop table t1;
set @@test_sql_discovery_write_frm=0;
set @@test_sql_discovery_statement='t1:create table t1 (a int)';
show status like 'handler_discover';
Variable_name Value
Handler_discover 14
show create table t1;
Table Create Table
t1 CREATE TABLE t1 (
a int(11) DEFAULT NULL
) ENGINE=TEST_SQL_DISCOVERY DEFAULT CHARSET=latin1
show status like 'handler_discover';
Variable_name Value
Handler_discover 15
----
----
show open tables from test;
Database Table In_use Name_locked
test t1 0 0
select * from t1;
a
show status like 'handler_discover';
Variable_name Value
Handler_discover 15
flush tables;
select * from t1;
a
show status like 'handler_discover';
Variable_name Value
Handler_discover 16
drop table t1;
show status like 'handler_discover';
Variable_name Value
Handler_discover 16

133
storage/test_sql_discovery/mysql-test/sql_discovery/simple.test Normal file
View file

@ -0,0 +1,133 @@
--source inc.inc
show variables like 'test_sql_discovery%';
set sql_quote_show_create=0;
let $mysqld_datadir= `select @@datadir`;
--error ER_CANT_CREATE_TABLE
create table t1 (a int) engine=test_sql_discovery;
--error ER_NO_SUCH_TABLE
select * from t1;
set @@test_sql_discovery_statement='t1:foobar bwa-ha-ha';
--error ER_NO_SUCH_TABLE
select * from t0;
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
#
# test different invalid discovering statements
#
set @@test_sql_discovery_statement='t1:select 1';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 (a int primary key) partition by hash(id) partitions 2';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 (a int) union=(t3,t4)';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 like t2';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 select * from t2';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 (a int) index directory="/tmp"';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 (a int) data directory="/tmp"';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table t1 (a int) engine=myisam';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create temporary table t1 (a int)';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
set @@test_sql_discovery_statement='t1:create table if not exists t1 (a int)';
--error ER_NO_SUCH_TABLE
select * from t1;
show warnings;
#
# this should work:
#
set @@test_sql_discovery_statement='t1:create table t1 (a int)';
select * from t1;
show create table t1;
drop table t1;
# table name in the create table statement is ignored
set @@test_sql_discovery_statement='t1:create table t2 (a int)';
select * from t1;
--error ER_NO_SUCH_TABLE
select * from t2;
drop table t1;
# and something more complex
set @@test_sql_discovery_statement='t1:
create table t1 (
a int not null default 5 primary key,
b timestamp,
c tinyblob,
d decimal(5,2),
e varchar(30) character set ascii,
f geometry not null,
index (d,b),
unique index (c(10)),
fulltext (e),
spatial (f)
) comment="abc" default character set utf8 max_rows=100 min_rows=10 checksum=1';
show status like 'handler_discover';
show create table t1;
show status like 'handler_discover';
--echo ----
--list_files $mysqld_datadir/test t*
--echo ----
show open tables from test;
select * from t1;
show status like 'handler_discover';
flush tables;
select * from t1;
show status like 'handler_discover';
drop table t1;
set @@test_sql_discovery_write_frm=0;
set @@test_sql_discovery_statement='t1:create table t1 (a int)';
show status like 'handler_discover';
show create table t1;
show status like 'handler_discover';
--echo ----
--list_files $mysqld_datadir/test t*
--echo ----
show open tables from test;
select * from t1;
show status like 'handler_discover';
flush tables;
select * from t1;
show status like 'handler_discover';
drop table t1;
show status like 'handler_discover';

175
storage/test_sql_discovery/test_sql_discovery.cc Normal file
View file

@ -0,0 +1,175 @@
/*
Copyright (c) 2013 Monty Program Ab
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
*/
/*
a really minimal engine to test table discovery via sql statements.
See the archive engine if you're interested in real-life usable engine that
uses discovery via frm shipping.
*/
#include <mysql_version.h>
#include <handler.h>
#include <table.h>
static MYSQL_THDVAR_STR(statement, PLUGIN_VAR_MEMALLOC,
"The table name and the SQL statement to discover the next table",
NULL, NULL, 0);
static MYSQL_THDVAR_BOOL(write_frm, 0,
"Whether to cache discovered table metadata in frm files",
NULL, NULL, TRUE);
static struct st_mysql_sys_var *sysvars[] = {
MYSQL_SYSVAR(statement),
MYSQL_SYSVAR(write_frm),
NULL
};
typedef struct st_share {
const char *name;
THR_LOCK lock;
uint use_count;
struct st_share *next;
} SHARE;
class ha_tsd: public handler
{
private:
THR_LOCK_DATA lock;
SHARE *share;
public:
ha_tsd(handlerton *hton, TABLE_SHARE *table_arg)
: handler(hton, table_arg) { }
ulonglong table_flags() const
{ // NO_TRANSACTIONS and everything that affects CREATE TABLE
return HA_NO_TRANSACTIONS | HA_CAN_GEOMETRY | HA_NULL_IN_KEY |
HA_CAN_INDEX_BLOBS | HA_AUTO_PART_KEY | HA_CAN_RTREEKEYS |
HA_CAN_FULLTEXT;
}
ulong index_flags(uint inx, uint part, bool all_parts) const { return 0; }
THR_LOCK_DATA **store_lock(THD *thd, THR_LOCK_DATA **to,
enum thr_lock_type lock_type)
{
if (lock_type != TL_IGNORE && lock.type == TL_UNLOCK)
lock.type = lock_type;
*to ++= &lock;
return to;
}
int rnd_init(bool scan) { return 0; }
int rnd_next(unsigned char *buf) { return HA_ERR_END_OF_FILE; }
void position(const uchar *record) { }
int rnd_pos(uchar *buf, uchar *pos) { return HA_ERR_END_OF_FILE; }
int info(uint flag) { return 0; }
uint max_supported_keys() const { return 16; }
int create(const char *name, TABLE *table_arg,
HA_CREATE_INFO *create_info) { return HA_ERR_WRONG_COMMAND; }
int open(const char *name, int mode, uint test_if_locked);
int close(void);
};
static SHARE *find_or_create_share(const char *table_name, TABLE *table)
{
SHARE *share;
for (share = (SHARE*)table->s->ha_data; share; share = share->next)
if (my_strcasecmp(table_alias_charset, table_name, share->name) == 0)
return share;
share = (SHARE*)alloc_root(&table->s->mem_root, sizeof(*share));
bzero(share, sizeof(*share));
share->name = strdup_root(&table->s->mem_root, table_name);
share->next = (SHARE*)table->s->ha_data;
table->s->ha_data = share;
return share;
}
int ha_tsd::open(const char *name, int mode, uint test_if_locked)
{
mysql_mutex_lock(&table->s->LOCK_ha_data);
share = find_or_create_share(name, table);
if (share->use_count++ == 0)
thr_lock_init(&share->lock);
mysql_mutex_unlock(&table->s->LOCK_ha_data);
thr_lock_data_init(&share->lock,&lock,NULL);
return 0;
}
int ha_tsd::close(void)
{
mysql_mutex_lock(&table->s->LOCK_ha_data);
if (--share->use_count == 0)
thr_lock_delete(&share->lock);
mysql_mutex_unlock(&table->s->LOCK_ha_data);
return 0;
}
static handler *create_handler(handlerton *hton, TABLE_SHARE *table,
MEM_ROOT *mem_root)
{
return new (mem_root) ha_tsd(hton, table);
}
static int discover_table(handlerton *hton, THD* thd, TABLE_SHARE *share)
{
const char *sql= THDVAR(thd, statement);
// the table is discovered if sql starts from "table_name:"
if (!sql ||
strncmp(sql, share->table_name.str, share->table_name.length) ||
sql[share->table_name.length] != ':')
return HA_ERR_NO_SUCH_TABLE;
sql+= share->table_name.length + 1;
return share->init_from_sql_statement_string(thd, THDVAR(thd, write_frm),
sql, strlen(sql));
}
static int init(void *p)
{
handlerton *hton = (handlerton *)p;
hton->create = create_handler;
hton->discover_table = discover_table;
return 0;
}
struct st_mysql_storage_engine descriptor =
{ MYSQL_HANDLERTON_INTERFACE_VERSION };
maria_declare_plugin(tsd)
{
MYSQL_STORAGE_ENGINE_PLUGIN,
&descriptor,
"TEST_SQL_DISCOVERY",
"Sergei Golubchik",
"Minimal engine to test table discovery via sql statements",
PLUGIN_LICENSE_GPL,
init,
NULL,
0x0001,
NULL,
sysvars,
"0.1",
MariaDB_PLUGIN_MATURITY_EXPERIMENTAL
}
maria_declare_plugin_end;