###############################################################################
#
# When a configuration change involving primary election is
# running no slave channels can be start in the group members.
#
# Test:
#   0. This test need 3 servers
#   1. server1 start group replication and server2 join
#   2. Activate debug point that will block the group action when changing
#      to single primary mode
#   3. Execute action to change group to single primary mode
#   4. Start a slave connection on server1 to server3.
#      It should fail, since a group action is ongoing.
#   5. Verify occurrence of error message
#   6. Unlock the action
#   7. Clean up
#
###############################################################################

--source include/have_debug_sync.inc
--source include/have_group_replication_plugin.inc
--let $rpl_skip_group_replication_start= 1
--let $rpl_server_count= 3
--source include/group_replication.inc

--echo
--echo # 1. server1 start group replication and server2 join

set session sql_log_bin=0;
call mtr.add_suppression("Can't start slave IO THREAD when group replication is running a group configuration operation.");
call mtr.add_suppression("Run function 'thread_start' in plugin 'group_replication' failed");
call mtr.add_suppression("Slave I/O for channel 'ch3_1': Fatal error: Failed to run 'thread_start' hook, Error_code:*");
call mtr.add_suppression("Can't start slave SQL THREAD when group replication is running a group configuration operation.");
call mtr.add_suppression("Run function 'applier_start' in plugin 'group_replication' failed");
call mtr.add_suppression("Slave SQL for channel 'ch3_1': Fatal error: Failed to run 'applier_start' hook, Error_code:*");
set session sql_log_bin=1;

--source include/start_and_bootstrap_group_replication.inc

--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--source include/start_group_replication.inc

--echo
--echo # 2. Activate debug point that will block the group action when changing
--echo #    to single primary mode

SET @@GLOBAL.DEBUG= '+d,group_replication_block_group_action';
--let $server2_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)

--echo
--echo # 3. Execute action to change group to single primary mode

--replace_result $server2_uuid MEMBER1_UUID
--send_eval SELECT group_replication_switch_to_single_primary_mode("$server2_uuid")

--echo
--echo # 4. Start a slave connection on server1 to server3. Should fail, action
--echo #    is ongoing

--let $rpl_connection_name= server1
--source include/rpl_connection.inc

--let $wait_condition=SELECT COUNT(*)=1 FROM performance_schema.events_stages_current WHERE event_name LIKE "%Single-primary Switch: checking group pre-conditions%"
--source include/wait_condition.inc

--replace_result $SERVER_MYPORT_3 SERVER_3_PORT
--eval CHANGE REPLICATION SOURCE TO SOURCE_HOST='localhost', SOURCE_USER='root', SOURCE_PORT=$SERVER_MYPORT_3 for channel 'ch3_1'

--let $rpl_channel_name='ch3_1'

--let $slave_io_errno= convert_error(ER_SLAVE_FATAL_ERROR)
--let $show_slave_io_error= 0
--let $slave_io_error_replace= / at [0-9]*/ at XXX/

--let $slave_sql_errno= convert_error(ER_SLAVE_FATAL_ERROR)
--let $show_slave_sql_error= 0
--let $slave_sql_error_replace= / at [0-9]*/ at XXX/

START SLAVE FOR CHANNEL 'ch3_1';
--source include/wait_for_slave_io_error.inc
--source include/wait_for_slave_sql_error.inc

--let $rpl_channel_name=

--echo
--echo # 5. Verify occurrence of error message

--let $assert_file= $MYSQLTEST_VARDIR/log/mysqld.1.err
--let $assert_count = 1
--let $assert_select = Can't start slave IO THREAD when group replication is running a group configuration operation
--let $assert_text = Found the expected error about failure to start slave IO THREAD.
--source include/assert_grep.inc

--let $assert_file= $MYSQLTEST_VARDIR/log/mysqld.1.err
--let $assert_count = 1
--let $assert_select = Can't start slave SQL THREAD when group replication is running a group configuration operation
--let $assert_text = Found the expected error about failure to start slave SQL THREAD.
--source include/assert_grep.inc

--echo
--echo # 6. Unlock the action

--let $rpl_connection_name= server_2
--source include/rpl_connection.inc

SET DEBUG_SYNC= "now SIGNAL signal.action_continue";

--let $rpl_connection_name= server2
--source include/rpl_connection.inc

--replace_result $server2_uuid MEMBER1_UUID
--reap

--echo
--echo # 7. Clean up

--let $rpl_connection_name= server1
--source include/rpl_connection.inc

RESET SLAVE ALL FOR CHANNEL 'ch3_1';

--let $rpl_connection_name= server2
--source include/rpl_connection.inc

SET @@GLOBAL.DEBUG= '-d,group_replication_block_group_action';

--let $rpl_group_replication_single_primary_mode=1
--let $rpl_group_replication_reset_persistent_vars=1
--source include/group_replication_end.inc