###############################################################################
#
# No more than one configuration change can happen at the same time.
#
# Test:
#   0. This test requires two servers
#   1. Enable debug point to block action
#   2. Execute a switch to single primary mode on server1
#   3. Execute parallel group action on server2 that must fail
#      due to already one operation is being executed
#   4. Unlock the blocked action on server1
#   5. Resume the action on server1
#   6. Cleanup
#
###############################################################################

--source include/have_debug_sync.inc
--source include/have_group_replication_plugin.inc
--source include/group_replication.inc

--echo
--echo # 1. Enable debug point to block action

--let $server1_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
SET @@GLOBAL.DEBUG= '+d,group_replication_block_group_action';

--echo
--echo # 2. Execute a switch to single primary mode on server1

--replace_result $server1_uuid MEMBER1_UUID
--send_eval SELECT group_replication_switch_to_single_primary_mode("$server1_uuid")

--echo
--echo # 3. Execute parallel group action on server2 that must fail
--echo #    due to already one operation is being executed

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

--let $server2_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)

# verify thread THD_group_action_coordinator has started
--let $wait_condition= SELECT COUNT(*)=1 FROM performance_schema.threads WHERE NAME = "thread/group_rpl/THD_group_action_coordinator"
--source include/wait_condition.inc

--echo
--echo # Execute a switch to single primary mode that must fail
--replace_result $server2_uuid MEMBER2_UUID
--error ER_GRP_RPL_UDF_ERROR
--eval SELECT group_replication_switch_to_single_primary_mode("$server2_uuid")

--echo
--replace_result $server1_uuid MEMBER1_UUID
--error ER_GRP_RPL_UDF_ERROR
--eval SELECT group_replication_switch_to_single_primary_mode("$server1_uuid")

--echo
--error ER_GRP_RPL_UDF_ERROR
SELECT group_replication_switch_to_single_primary_mode();

--echo
--echo # Execute a switch to multi primary mode that must be no-op
SELECT group_replication_switch_to_multi_primary_mode();

--echo
--echo # Execute a set primary that must fail as can't initialize
--replace_result $server2_uuid MEMBER2_UUID
--error ER_CANT_INITIALIZE_UDF
--eval SELECT group_replication_set_as_primary("$server2_uuid")

--echo
--replace_result $server1_uuid MEMBER1_UUID
--error ER_CANT_INITIALIZE_UDF
--eval SELECT group_replication_set_as_primary("$server1_uuid")

--echo
--echo # Add suppression
set session sql_log_bin=0;
call mtr.add_suppression("The function 'group_replication_switch_to_single_primary_mode' failed. There is*");
set session sql_log_bin=1;

--echo
--echo # 4. Unlock the blocked action on server1

--let $rpl_connection_name= server_1
--source include/rpl_connection.inc

SET DEBUG_SYNC= "now SIGNAL signal.action_continue";

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

--echo
--echo # 5. Resume the action on server1

--replace_result $server1_uuid MEMBER1_UUID
--reap

--echo
--echo # 6. Cleanup

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