# ==== Purpose ====
#
# Verify that in statement based replication, no operation update query
# should not be logged into binlog if the read_only mode is ON.
#
# ==== Implementation ====
#
# 1. Create a table 't' and insert a row in it.
# 2. Begin a transaction and execute noop UPDATE query on table 't'.
# 3. Start another connection and set super_read_only mode to ON.
# 4. Commit the transaction started in step #2.
# 5. Clean up.
#
# ==== References ====
#
# Bug #29009092  NOOP UPDATE QUERY IS LOGGED TO BINLOG AFTER READ_ONLY FLAG IS SET

--source include/have_binlog_format_statement.inc
SET @saved_value_super= @@GLOBAL.SUPER_READ_ONLY;
SET @saved_value= @@GLOBAL.read_only;
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);

# Test-1: Execute only noop UPDATE in the transaction
connect (con1,localhost,root,,test);
BEGIN;
UPDATE t1 SET a = 1 where a =1;

connection default;
SET GLOBAL SUPER_READ_ONLY=1;

connection con1;
--error ER_OPTION_PREVENTS_STATEMENT
COMMIT;

connection default;
SET GLOBAL SUPER_READ_ONLY=0;

# Test-2: Execute a noop UPDATE and a temporary table INSERT in the transaction
connection con1;
CREATE TEMPORARY TABLE t2 (a INT) ENGINE=INNODB;

BEGIN;
UPDATE t1 SET a = 1 where a = 1;
INSERT INTO t2 values(10);

connection default;
SET GLOBAL SUPER_READ_ONLY=1;

connection con1;
--error ER_OPTION_PREVENTS_STATEMENT
COMMIT;
DROP TABLE t2;

connection default;
SET GLOBAL SUPER_READ_ONLY=0;
SET GLOBAL READ_ONLY=0;

# READ_ONLY does nothing to SUPER users so we setup a non-SUPER user.
CREATE USER test@localhost;
GRANT CREATE TEMPORARY TABLES, UPDATE, DROP ON *.* TO test@localhost;
connect (con2,localhost,test,,test);

# Test-3: A non-SUPER user execute only noop UPDATE in the transaction.
connection con2;
BEGIN;
UPDATE t1 SET a = 1 where a =1;

connection default;
SET GLOBAL READ_ONLY=1;

connection con2;
--error ER_OPTION_PREVENTS_STATEMENT
COMMIT;

connection default;
SET GLOBAL READ_ONLY=0;

# Test-4: A non-SUPER user execute a noop UPDATE and a temporary table
# INSERT in the transaction
connection con2;
CREATE TEMPORARY TABLE t2 (a INT) ENGINE=INNODB;

BEGIN;
UPDATE t1 SET a = 1 where a = 1;
INSERT INTO t2 values(10);

connection default;
SET GLOBAL READ_ONLY=1;

connection con2;
--error ER_OPTION_PREVENTS_STATEMENT
COMMIT;
DROP TABLE t2;

# Clean up
connection default;
DROP USER test@localhost;
SET GLOBAL SUPER_READ_ONLY= @saved_value_super;
SET GLOBAL read_only= @saved_value;
DROP TABLE t1;