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MDEV-15530: Variable replicate_rewrite_db cannot be found in "show global variables"

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- Add `replicate_rewrite_db` status variable, that may accept comma
separated key-value pairs.
- Note that option `OPT_REPLICATE_REWRITE_DB` already existed in `mysqld.h`
  from this commit 23d8586dbf

Reviewer:Brandon Nesterenko <brandon.nesterenko@mariadb.com>
This commit is contained in:
Anel Husakovic
2022-08-09 13:50:12 +02:00
committed by Brandon Nesterenko
parent ccf0e27f28
commit 1a057a923b
30 changed files with 936 additions and 141 deletions
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99
mysql-test/suite/sys_vars/r/replicate_rewrite_db.result Normal file
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#
# MDEV-15530: Variable replicate_rewrite_db
# cannot be found in "show global variables"
#
SET @save_replicate_rewrite_db = @@GLOBAL.replicate_rewrite_db;
SELECT @save_replicate_rewrite_db;
@save_replicate_rewrite_db
test->rewrite,mysqltest1->test,a->b
# Test session/Scope (it is global variable)
select @@global.replicate_rewrite_db;
@@global.replicate_rewrite_db
test->rewrite,mysqltest1->test,a->b
SELECT @@SESSION.replicate_rewrite_db;
ERROR HY000: Variable 'replicate_rewrite_db' is a GLOBAL variable
SET @@SESSION.replicate_rewrite_db = "";
ERROR HY000: Variable 'replicate_rewrite_db' is a GLOBAL variable and should be set with SET GLOBAL
show global variables like 'replicate_rewrite_db';
Variable_name Value
replicate_rewrite_db test->rewrite,mysqltest1->test,a->b
show session variables like 'replicate_rewrite_db';
Variable_name Value
replicate_rewrite_db test->rewrite,mysqltest1->test,a->b
select * from information_schema.global_variables where variable_name='replicate_rewrite_db';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_REWRITE_DB test->rewrite,mysqltest1->test,a->b
select * from information_schema.session_variables where variable_name='replicate_rewrite_db';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_REWRITE_DB test->rewrite,mysqltest1->test,a->b
# Incorrect type
SET @@GLOBAL.replicate_rewrite_db=1;
ERROR 42000: Incorrect argument type to variable 'replicate_rewrite_db'
SET @@GLOBAL.replicate_rewrite_db="->";
ERROR HY000: Incorrect arguments to SET
SET @@GLOBAL.replicate_rewrite_db=" ";
ERROR HY000: Incorrect arguments to SET
SET @@GLOBAL.replicate_rewrite_db="a->";
ERROR HY000: Incorrect arguments to SET
SET @@GLOBAL.replicate_rewrite_db="->b";
ERROR HY000: Incorrect arguments to SET
# Check arguments
set session replicate_rewrite_db=1;
ERROR HY000: Variable 'replicate_rewrite_db' is a GLOBAL variable and should be set with SET GLOBAL
set global replicate_rewrite_db=1;
ERROR 42000: Incorrect argument type to variable 'replicate_rewrite_db'
SET @@SESSION.replicate_do_db = "";
ERROR HY000: Variable 'replicate_do_db' is a GLOBAL variable and should be set with SET GLOBAL
SET @@GLOBAL.replicate_rewrite_db="";
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
SET @@GLOBAL.replicate_rewrite_db=null;
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
SET @@GLOBAL.replicate_rewrite_db=DEFAULT;
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
SET @@GLOBAL.replicate_rewrite_db="db1->db3";
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
db1->db3
SET @@GLOBAL.replicate_rewrite_db="db2 ->db4";
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
db2->db4
SET @@GLOBAL.replicate_rewrite_db=" db5 ->db7 ";
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
db5->db7
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_rewrite_db';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_REWRITE_DB db5->db7
select * from information_schema.session_variables where variable_name='replicate_rewrite_db';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_REWRITE_DB db5->db7
show global variables like 'replicate_rewrite_db';
Variable_name Value
replicate_rewrite_db db5->db7
SET @@GLOBAL.replicate_rewrite_db="db1->db2, db3->db4";
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
db1->db2,db3->db4
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='replicate_rewrite_db';
VARIABLE_NAME VARIABLE_VALUE
REPLICATE_REWRITE_DB db1->db2,db3->db4
# Check restart with appending the value
# restart: --replicate_rewrite_db=X->Y
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
test->rewrite,mysqltest1->test,a->b,X->Y
# Check restart with wrong value on CLI
[ERROR] Bad syntax in replicate-rewrite-db.Expected syntax is FROM->TO.
# restart:
SELECT @@GLOBAL.replicate_rewrite_db;
@@GLOBAL.replicate_rewrite_db
test->rewrite,mysqltest1->test,a->b
# Cleanup.
SET @@GLOBAL.replicate_rewrite_db = @save_replicate_rewrite_db;