# Tests for PERFORMANCE_SCHEMA
#
# Check that
# - a regular user can not update setup_ tables under --read-only
# - a user with SUPER privileges can

--source include/not_embedded.inc
--source include/have_perfschema.inc
--enable_connect_log

use performance_schema;

set @start_read_only= @@global.read_only;
set @start_super_read_only= @@global.super_read_only;

set @orig_sql_mode= @@sql_mode;
set sql_mode= (select replace(@@sql_mode,'NO_AUTO_CREATE_USER',''));
grant SELECT, UPDATE on performance_schema.* to pfsuser@localhost;
set sql_mode= @orig_sql_mode;
flush privileges;

connect (con1, localhost, pfsuser, , test);

connection default;

set global read_only=0;

connection con1;

select @@global.read_only;
show grants;
--disable_result_log
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
--enable_result_log

connection default;

set global read_only=1;

connection con1;

select @@global.read_only;
show grants;
--disable_result_log
--echo # Update on perf_schema is allowed in read_only mode.
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
--enable_result_log

connection default;

grant super on *.* to pfsuser@localhost;
flush privileges;

disconnect con1;
connect (con1, localhost, pfsuser, , test);

select @@global.read_only;
show grants;
--disable_result_log
select * from performance_schema.setup_instruments;
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
--enable_result_log

connection default;

set global super_read_only=1;

connection con1;

select @@global.super_read_only;
show grants;
--disable_result_log
select * from performance_schema.setup_instruments;
--echo # Update is allowed in super_read_only on perf schema for
--echo # super user.
update performance_schema.setup_instruments set enabled='NO';
update performance_schema.setup_instruments set enabled='YES';
--enable_result_log

--echo #
--echo # Bug#31080309 - REGRESSION FOR BUG 81009 FIXED IN 5.7.17
--echo #   Bug23103937(BUG81009) - PS_TRUNCATE_ALL_TABLES() DOES NOT WORK IN
--echo #                           SUPER_READ_ONLY MODE.
--echo #

connection default;
--echo # Reset read_only and super_read_only mode.
set global read_only=0;
set global super_read_only=0;
--echo # Grant truncate table and execute stored procedure privileges to pfsuser.
grant DROP on performance_schema.* to pfsuser@localhost;
grant EXECUTE on procedure sys.ps_truncate_all_tables to pfsuser@localhost;

--echo #-----------------------------------------------------------------------
--echo # Test case to verify truncate operation on performance schema table by
--echo # super user with super_read_only=ON.
--echo #-----------------------------------------------------------------------
--echo # Set super_read_only mode.
set global super_read_only=1;

connection con1;
--echo # truncate operation is allowed in super_read_only mode on performance schema
--echo # tables for super user.
--echo # Without fix following statements fail because of super read only mode.
--disable_result_log
truncate table performance_schema.events_statements_summary_by_digest;
call sys.ps_truncate_all_tables(0);
--enable_result_log

--echo #-----------------------------------------------------------------------
--echo # Test case to verify truncate operation on performance schema table by
--echo # super user with read_only=ON.
--echo #-----------------------------------------------------------------------
connection default;
--echo # Reset super_read_only mode.
set global super_read_only=0;
--echo # Set read_only mode.
set global read_only=1;

connection con1;
--echo # truncate operation is allowed in read_only mode on performance schema
--echo # tables for super user.
--echo # Without fix following statements fail because of super read only mode.
--disable_result_log
truncate table performance_schema.events_statements_summary_by_digest;
call sys.ps_truncate_all_tables(0);
--enable_result_log

--echo #-----------------------------------------------------------------------
--echo # Test case to verify truncate operation on performance schema table by
--echo # non-super user with super_read_only=ON.
--echo #-----------------------------------------------------------------------
connection default;
set global super_read_only=0;
--echo # Revoke SUPER privilege from pfsuser.
revoke SUPER on *.* from pfsuser@localhost;
--echo # Reset super_read_only mode.
set global super_read_only=1;

connection con1;
--echo # truncate operation is allowed in super_read_only mode on performance schema
--echo # tables for non-super user.
--disable_result_log
truncate table performance_schema.events_statements_summary_by_digest;
call sys.ps_truncate_all_tables(0);
--enable_result_log

--echo #-----------------------------------------------------------------------
--echo # Test case to verify truncate operation on performance schema table by
--echo # non-super user with read_only=ON.
--echo #-----------------------------------------------------------------------
connection default;
--echo # Reset super_read_only mode.
set global super_read_only=0;
--echo # Set read_only mode.
set global read_only=1;

connection con1;
--echo # truncate operation is allowed in read_only mode on performance schema
--echo # tables for non-super user.
--disable_result_log
truncate table performance_schema.events_statements_summary_by_digest;
call sys.ps_truncate_all_tables(0);
--enable_result_log
--echo ########################################################################

disconnect con1;
--source include/wait_until_disconnected.inc

connection default;

set global read_only= @start_read_only;
set global super_read_only= @start_super_read_only;

drop user pfsuser@localhost;
flush privileges;

--disable_connect_log