################################################################################
# Group Replication: cross-version policies
# This test-case makes sure in multi-primary mode:
# 1. Lower version servers(considering patch version) do not join group
# 2. Higher version servers(considering patch version) are in read-only mode
# 3. When versions are same(considering patch version) servers are writable
#
# Test:
# 0.   The test requires two servers: M1 and M2.
#      Bootstrap M1 and set environment on M2.
# 1.   Lower version do not join the group.
# 1.1. Make M2 major version lower and make sure START GR fails.
# 1.2. Make M2 minor version lower and make sure START GR fails.
# 1.3. Make M2 patch version lower and make sure START GR fails.
# 2.   Higher version are in read-only mode.
# 2.1. Make M2 major version higher and assert read-only is set.
# 2.2. Make M2 minor version higher and assert read-only is set.
# 2.3. Make M2 patch version higher and assert read-only is set.
# 3.   Make M2 version same as M1 and confirm both M1 and M2 are online.
#      Assert read-only is disabled on M2.
# 4.   Cleanup.
#
################################################################################

--source include/big_test.inc
--source include/have_debug.inc
--source include/have_group_replication_plugin.inc
--let $rpl_skip_group_replication_start= 1
--source include/group_replication.inc

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

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

--let $server2_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
SET SESSION sql_log_bin=0;
call mtr.add_suppression("Member version is incompatible with the group.");
call mtr.add_suppression("Member version is read compatible with the group.");
SET SESSION sql_log_bin=1;

SET @debug_save= @@GLOBAL.DEBUG;

--echo
--echo # 1.   Lower version do not join the group.
--echo

--echo
--echo # 1.1. Make M2 major version lower and make sure START GR fails.

SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_lower_major_version';

--replace_result $group_replication_group_name GROUP_REPLICATION_GROUP_NAME
--eval SET GLOBAL group_replication_group_name= "$group_replication_group_name"
--error ER_GROUP_REPLICATION_CONFIGURATION
START GROUP_REPLICATION;

--let $assert_text= Assert M2 is OFFLINE.
--let $assert_cond= [SELECT COUNT(*) FROM performance_schema.replication_group_members WHERE member_state="OFFLINE" AND member_id="$server2_uuid"] = 1
--source include/assert.inc

--echo
--echo # 1.2. Make M2 minor version lower and make sure START GR fails.

SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_lower_minor_version';

--error ER_GROUP_REPLICATION_CONFIGURATION
START GROUP_REPLICATION;

--let $assert_text= Assert M2 is OFFLINE.
--let $assert_cond= [SELECT COUNT(*) FROM performance_schema.replication_group_members WHERE member_state="OFFLINE" AND member_id="$server2_uuid"] = 1
--source include/assert.inc

--echo
--echo # 1.3. Make M2 patch version lower and make sure START GR fails.

SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_lower_patch_version';

--error ER_GROUP_REPLICATION_CONFIGURATION
START GROUP_REPLICATION;

--let $assert_text= Assert M2 is OFFLINE.
--let $assert_cond= [SELECT COUNT(*) FROM performance_schema.replication_group_members WHERE member_state="OFFLINE" AND member_id="$server2_uuid"] = 1
--source include/assert.inc

--echo
--echo # 2.   Higher version are in read-only mode.
--echo

--echo
--echo # 2.1. Make M2 major version higher and assert read-only is set.

SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_higher_major_version';
--source include/start_group_replication.inc

--source include/gr_assert_mpm_consistency.inc


--echo
--echo # 2.2. Make M2 minor version higher and assert read-only is set.

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

--source include/stop_group_replication.inc
SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_higher_minor_version';
--source include/start_group_replication.inc

--source include/gr_assert_mpm_consistency.inc


--echo
--echo # 2.3. Make M2 patch version higher and assert read-only is set.

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

--source include/stop_group_replication.inc
SET @@GLOBAL.DEBUG= 'd,group_replication_compatibility_higher_patch_version';
--source include/start_group_replication.inc

--source include/gr_assert_mpm_consistency.inc


--echo
--echo # 3.   Make M2 version same as M1 and confirm both M1 and M2 are online.
--echo #      Assert read-only is disabled on M2.
--echo

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

--source include/stop_group_replication.inc

# Single member testing in MPM mode.
--source include/gr_assert_mpm_consistency.inc

SET @@GLOBAL.DEBUG= @debug_save;
--source include/start_group_replication.inc

--source include/gr_assert_mpm_consistency.inc


--echo
--echo # 4.   Cleanup.
--echo

--source include/group_replication_end.inc