################################################################################
# The aim of this testcase is to test persisted behavior of replication
# variables with SET PERSIST and RESET PERSIST IF EXISTS clauses.
#
# Test:
# 0. Check that there are no persisted variable settings due to improper
#    cleanup by other testcases.
# 1. Test SET PERSIST. Verify persisted variables.
# 2. Restart server, it must preserve the persisted variable settings.
#    Verify persisted configuration.
# 3. Test RESET PERSIST IF EXISTS. Verify persisted variable settings are
#    removed.
# 4. Clean up.
################################################################################
--source include/have_log_bin.inc
--source include/have_semisync_plugin.inc


--echo ############################################################
--echo # 0. Check that there are no persisted variable settings.
--let $assert_text= 'Expect 0 persisted variables.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.persisted_variables, count, 1] = 0
--source include/assert.inc


--echo
--echo ############################################################
--echo # 1. Initialization. Test SET PERSIST. Verify persisted
--echo #    variables.
--let $MYSQLD_DATADIR= `select @@datadir;`
CALL mtr.add_suppression("Unsafe statement written to the binary log");

--echo # Install semi-sync related plugins
--disable_query_log
eval INSTALL PLUGIN rpl_semi_sync_master SONAME '$SEMISYNC_MASTER_PLUGIN';
eval INSTALL PLUGIN rpl_semi_sync_slave SONAME '$SEMISYNC_SLAVE_PLUGIN';
--enable_query_log

CREATE TABLE rplvars (id INT PRIMARY KEY AUTO_INCREMENT, varname VARCHAR(64), varvalue VARCHAR(256));
# Disable warning to avoid printing of ER_BINLOG_UNSAFE_STATEMENT
--disable_warnings
INSERT INTO rplvars (varname, varvalue)
 SELECT * FROM performance_schema.global_variables
 WHERE (VARIABLE_NAME LIKE '%binlog%' OR
        VARIABLE_NAME LIKE '%gtid%' OR
        VARIABLE_NAME LIKE '%log_bin%' OR
        VARIABLE_NAME LIKE '%master%' OR
        VARIABLE_NAME LIKE '%relay%' OR
        VARIABLE_NAME LIKE '%rpl%' OR
        VARIABLE_NAME LIKE '%semi_sync%' OR
        VARIABLE_NAME LIKE '%slave%') AND
       (VARIABLE_NAME NOT IN ('innodb_api_enable_binlog',
        'innodb_master_thread_disabled_debug',
        'print_gtid_info_during_recovery',
        'recovery_apply_binlog') AND
        (VARIABLE_NAME NOT LIKE 'xengine_%'))
       ORDER BY VARIABLE_NAME;
--enable_warnings
--let $countvars= `SELECT COUNT(*) FROM rplvars;`

# If this count differs, it means a variable has been added or removed.
# In that case, this testcase needs to be updated accordingly.
--echo
--let $expected=85
--let $assert_text= 'Expect $expected variables in the table.'
--let $assert_cond= [SELECT COUNT(*) as count FROM rplvars, count, 1] = $expected
--source include/assert.inc

--echo
--echo # Test SET PERSIST
--let $varid=1
while ( $varid <= $countvars )
{
  --let $varnames= `SELECT varname FROM rplvars WHERE id=$varid;`

  # Following variables are either non persistent or read only variables.
  if (`SELECT '$varnames' IN ('binlog_row_event_max_size', 'binlog_gtid_simple_recovery', 'gtid_executed', 'gtid_next', 'gtid_owned', 'log_bin', 'log_bin_basename', 'log_bin_index', 'log_slave_updates', 'relay_log', 'relay_log_basename', 'relay_log_index', 'relay_log_index', 'relay_log_info_file', 'relay_log_recovery', 'relay_log_space_limit', 'slave_load_tmpdir', 'slave_load_tmpdir', 'slave_skip_errors', 'log_bin_use_v1_row_events', 'binlog_rotate_encryption_master_key_at_startup')`)
  {
    --error ER_INCORRECT_GLOBAL_LOCAL_VAR
  }
  --eval SET PERSIST $varnames = @@GLOBAL.$varnames

  --inc $varid
}

--echo
--let $expected=67
--let $assert_text= 'Expect $expected persisted variables in persisted_variables table.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.persisted_variables, count, 1] = $expected
--source include/assert.inc

--echo
--echo ############################################################
--echo # 2. Restart server, it must preserve the persisted variable
--echo #    settings. Verify persisted configuration.
--source include/restart_mysqld.inc
--source include/wait_until_connected_again.inc

--echo
--let $assert_text= 'Expect $expected persisted variables in persisted_variables table.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.persisted_variables, count, 1] = $expected
--source include/assert.inc

--let $assert_text= 'Expect $expected persisted variables shown as PERSISTED in variables_info table.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.variables_info WHERE variable_source="PERSISTED", count, 1] = $expected
--source include/assert.inc

--let $assert_text= 'Expect $expected persisted variables with matching persisted and global values.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.variables_info vi JOIN performance_schema.persisted_variables pv JOIN performance_schema.global_variables gv ON vi.variable_name=pv.variable_name AND vi.variable_name=gv.variable_name AND pv.variable_value=gv.variable_value WHERE vi.variable_source="PERSISTED", count, 1] = $expected
--source include/assert.inc


--echo
--echo ############################################################
--echo # 3. Test RESET PERSIST IF EXISTS. Verify persisted variable
--echo #    settings are removed.
--let $varid=1
while ( $varid <= $countvars )
{
  --let $varnames= `SELECT varname FROM rplvars WHERE id=$varid`
  --eval RESET PERSIST IF EXISTS $varnames
  --inc $varid
}

--echo
--let $assert_text= 'Expect 0 persisted variables.'
--let $assert_cond= [SELECT COUNT(*) as count FROM performance_schema.persisted_variables, count, 1] = 0
--source include/assert.inc

--echo
--echo ############################################################
--echo # 4. Clean up.
--let $countvars=
--let $varid=
--let $varnames=
--remove_file $MYSQLD_DATADIR/mysqld-auto.cnf
UNINSTALL PLUGIN rpl_semi_sync_master;
UNINSTALL PLUGIN rpl_semi_sync_slave;
DROP TABLE rplvars;