################################################################################
# The aim of this testcase is to test persisted behavior of replication
# variables with SET PERSIST_ONLY and RESET PERSIST clauses.
#
# Test:
# 0. Check that there are no persisted variable settings due to improper
#    cleanup by other testcases.
# 1. Test SET PERSIST_ONLY. Verify persisted variables.
# 2. Restart server, it must preserve the persisted variable settings.
#    Verify persisted configuration.
# 3. Test RESET PERSIST. 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_ONLY. 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'))
       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=83
--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_ONLY
--let $varid=1
while ( $varid <= $countvars )
{
  --let $varnames= `SELECT varname FROM rplvars WHERE id=$varid`

  # Following variables are non persistent read only variables.
  if (`SELECT '$varnames' IN ('gtid_executed', 'gtid_owned', 'log_bin', 'log_bin_basename', 'log_bin_index', 'relay_log', 'relay_log_basename', 'relay_log_index', 'relay_log_info_file', 'slave_load_tmpdir', 'log_bin_use_v1_row_events')`)
  {
    --error ER_INCORRECT_GLOBAL_LOCAL_VAR
  }
  --eval SET PERSIST_ONLY $varnames = @@GLOBAL.$varnames

  #  TODO: Remove/update this once Bug#27322592 is FIXED.
  if (`SELECT '$varnames' IN ('binlog_direct_non_transactional_updates', 'binlog_order_commits', 'binlog_rows_query_log_events', 'log_bin_trust_function_creators', 'log_slow_slave_statements', 'log_statements_unsafe_for_binlog', 'master_verify_checksum', 'slave_allow_batching', 'slave_compressed_protocol', 'slave_preserve_commit_order', 'slave_sql_verify_checksum', 'relay_log_purge', 'rpl_semi_sync_master_enabled', 'rpl_semi_sync_master_wait_no_slave', 'rpl_semi_sync_slave_enabled', 'binlog_gtid_simple_recovery', 'log_slave_updates', 'relay_log_recovery', 'binlog_rotate_encryption_master_key_at_startup')`)
  {
    --disable_query_log
      --eval SELECT varvalue INTO @varvalues FROM rplvars WHERE id=$varid
      --eval SET PERSIST_ONLY $varnames = @varvalues
    --enable_query_log
  }

  --inc $varid
}

--echo
--let $expected=72
--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

# WL#10957 added binlog_encryption and as it is persisted as read only and
# appended to command line parameter, its value is not converted from 0 to OFF.
# The values at persisted_variables and global_variables tables differ: 0 != OFF.
--dec $expected
--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. Verify persisted variable settings
--echo #    are removed.
--let $varid=1
while ( $varid <= $countvars )
{
  --let $varnames= `SELECT varname FROM rplvars WHERE id=$varid`

  if (`SELECT '$varnames' IN ('gtid_executed', 'gtid_owned', 'log_bin', 'log_bin_basename', 'log_bin_index', 'relay_log', 'relay_log_basename', 'relay_log_index', 'relay_log_info_file', 'slave_load_tmpdir', 'log_bin_use_v1_row_events')`)
  {
    --error ER_VAR_DOES_NOT_EXIST
  }
  --eval RESET PERSIST $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=
--let $varvalues=
SET @varvalues= NULL;
--remove_file $MYSQLD_DATADIR/mysqld-auto.cnf
UNINSTALL PLUGIN rpl_semi_sync_master;
UNINSTALL PLUGIN rpl_semi_sync_slave;
DROP TABLE rplvars;