#
# Purpose:
#   This test ensures that a replica's default value for Using_Gtid is set
# correctly. Specifically, it should default to 'Slave_Pos' unless the primary
# server does not support GTIDs (if its version is less than 10), in which case
# the replica should fall back to 'No'.
#
# Methodology:
#   Validate the value of Using_Gtid on replica initialization and after
# RESET SLAVE commands. Specifically, we validate the following use cases:
#
#   Case 1) A replica will initialize with Slave_Pos if the primary supports
#           GTIDs
#   Case 2) A replica configured with the Using_Gtid=Slave_Pos issued
#           RESET SLAVE will preserve Using_Gtid without any informational
#           messages.
#   Case 3) A replica configured with Using_Gtid=No against a master which
#           supports GTIDs will revert to Using_Gtid=Slave_Pos after issued
#           RESET SLAVE and provide an informational note
#   Case 4) A fresh replica targeting a primary which does not support GTIDs
#           will fall back to Using_Gtid=No when starting. An informational
#           message should be logged.
#   Case 5) A replica connected to a primary which does not support GTIDs
#           should preserve Using_Gtid=No when issued RESET SLAVE. No message
#           should be provided to the user.
#   Case 6) A replica configured with Using_Gtid=Current_Pos should revert
#           to Slave_Pos when issued RESET SLAVE. An informational message
#           should be provided to the user.
#   Case 7) The MTR include file rpl_change_topology.inc should implicitly
#           set MASTER_USE_GTID=NO when provided with $rpl_master_log_file
#   Case 8) The MTR include file reset_slave.inc should keep/delete GTID state
#           when reset_slave_keep_gtid_state is set, respectively.
#   Case 9) A replica issued CHANGE MASTER TO specified with log coordinates
#           but not master_use_gtid=No should warn the user that Using_Gtid is
#           being changed to No.
#   Case 10) A replica issued CHANGE MASTER TO specified with log coordinates
#           and master_use_gtid=Slave_Pos should warn the user that the log
#           coordinates will be ignored.
#
# References:
#   MDEV-19801: Change defaults for CHANGE MASTER TO so that GTID-based
#               replication is used by default if master supports it
#
--source include/have_debug.inc
--source include/master-slave.inc

# Format independent test so just use one
--source include/have_binlog_format_mixed.inc

--echo #
--echo # Slave default configuration should be Slave_Pos
--let $expected_default_using_gtid= Slave_Pos
--connection slave
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != $expected_default_using_gtid)
{
    --die Using_Gtid had wrong default value of '$using_gtid' when it should have been '$expected_default_using_gtid'
}

--echo #
--echo # Ensure that a slave configured with Using_Gtid=Slave_Pos will remain
--echo # as Slave_Pos after RESET SLAVE
--source include/stop_slave.inc
RESET SLAVE;
--echo # No warning should be given because Slave_Pos never changed
SHOW WARNINGS;
--source include/start_slave.inc
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != $expected_default_using_gtid)
{
    --die Using_Gtid has wrong value of '$using_gtid' when it should be '$expected_default_using_gtid'
}


--echo #
--echo # Ensure that a slave configured with Using_Gtid=No will revert to its
--echo # default of Slave_Pos after RESET SLAVE for a master which supports
--echo # GTIDs

--source include/stop_slave.inc
CHANGE MASTER TO MASTER_USE_GTID=NO;
--source include/start_slave.inc
--source include/stop_slave.inc
RESET SLAVE;
--echo # A notification that Using_Gtid was reverted should exist
SHOW WARNINGS;
--source include/start_slave.inc
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != $expected_default_using_gtid)
{
    --die Using_Gtid has wrong value of '$using_gtid' when it should be '$expected_default_using_gtid'
}

--echo # Clear SHOW WARNINGS
--disable_query_log
set SQL_LOG_BIN=0;
CREATE TABLE t1 (a int);
DROP TABLE t1;
set SQL_LOG_BIN=1;
--enable_query_log


--echo #
--echo # If the primary does not support GTIDs (version < 10), the replica
--echo # should fall back to Using_Gtid=No on slave start, and should not
--echo # revert Using_Gtid to Slave_Pos after RESET SLAVE

--source include/stop_slave.inc
RESET SLAVE ALL;

--replace_result $MASTER_MYPORT MASTER_MYPORT
--eval CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=$MASTER_MYPORT, MASTER_USER='root', MASTER_CONNECT_RETRY=1
SET @saved_dbug= @@GLOBAL.debug_dbug;
set @@global.debug_dbug= "d,mock_mariadb_primary_v5_in_get_master_version";
--source include/start_slave.inc

--echo # Replica should detect at start that the primary does not support GTIDs
--echo # and fall-back to Using_Gtid=No
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != 'No')
{
    --die Using_Gtid has wrong value of '$using_gtid' when it should be 'No'
}

--echo # Replica should have an informational message stating it is falling
--echo # back to Using_Gtid=No
let $log_error_= `SELECT @@GLOBAL.log_error`;
if(!$log_error_)
{
    # MySQL Server on windows is started with --console and thus
    # does not know the location of its .err log, use default location
    let $log_error_ = $MYSQLTEST_VARDIR/log/mysqld.2.err;
}
--let SEARCH_FILE=$log_error_
--let SEARCH_PATTERN=Falling back to Using_Gtid=No because master does not support GTIDs
--source include/search_pattern_in_file.inc

--source include/stop_slave.inc
RESET SLAVE;

--echo # Replica should know that the primary does not support GTIDs and
--echo # preserve Using_Gtid=No
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != 'No')
{
    --die Using_Gtid has wrong value of '$using_gtid' when it should be 'No'
}
--echo # 'No' was not reverted and therefore no note should be added
SHOW WARNINGS;
set @@global.debug_dbug= @saved_dbug;
--source include/start_slave.inc


--echo #
--echo # Ensure that a slave configured with Using_Gtid=Current_Pos will revert
--echo # to its default of Slave_Pos after RESET SLAVE.

--source include/stop_slave.inc
CHANGE MASTER TO MASTER_USE_GTID=Current_Pos;
--source include/start_slave.inc
--source include/stop_slave.inc
RESET SLAVE;
--echo # A notification that Using_Gtid was reverted should exist
SHOW WARNINGS;
--source include/start_slave.inc
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
if ($using_gtid != $expected_default_using_gtid)
{
    --die Using_Gtid has wrong value of '$using_gtid' when it should be '$expected_default_using_gtid'
}

--echo # Clear SHOW WARNINGS
--disable_query_log
set SQL_LOG_BIN=0;
CREATE TABLE t1 (a int);
DROP TABLE t1;
set SQL_LOG_BIN=1;
--enable_query_log

--echo # The MTR include file rpl_change_topology.inc should implicitly set
--echo # MASTER_USE_GTID=NO when provided with \$rpl_master_log_file. Note that
--echo # this will switch master and slave roles.
--connection slave
--source include/stop_slave.inc
--let $pos_c= query_get_value(SHOW SLAVE STATUS, Exec_Master_Log_Pos, 1)
--let $file_c= query_get_value(SHOW SLAVE STATUS, Master_Log_File, 1)
--let $rpl_master_log_file= 2:$file_c
--let $rpl_master_log_pos= 2:$pos_c
--let $rpl_topology= 2->1
--source include/rpl_change_topology.inc

--echo # connection 'master' is the slave in this comparison
--connection master
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
--echo # Validating Using_Gtid=No..
if (`SELECT strcmp("$using_gtid","No") != 0`)
{
    --die Using_Gtid should be No when calling rpl_change_topology with \$rpl_master_log_file set
}
--echo # ..success

--let $rpl_master_log_file=
--let $rpl_topology= 1->2
--source include/rpl_change_topology.inc

--echo # connection 'slave' is back to slave role
--connection slave
--let $using_gtid= query_get_value(SHOW SLAVE STATUS, Using_Gtid, 1)
--echo # Validating Using_Gtid=$expected_default_using_gtid..
if (`SELECT strcmp("$using_gtid","$expected_default_using_gtid")!= 0`)
{
    --die Using_Gtid should be back to $expected_default_using_gtid with empty \$rpl_master_log_file
}
--echo # ..success
--source include/start_slave.inc

--echo #
--echo # The MTR include file reset_slave.inc should keep/delete GTID state
--echo # when reset_slave_keep_gtid_state is set, respectively.
--echo #
--connection master
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
DROP TABLE t1;
--source include/save_master_gtid.inc

--connection slave
--source include/sync_with_master_gtid.inc
--source include/stop_slave.inc

--echo # Tagging gtid_slave_pos before reset_slave.inc as old_slave_pos
--let $old_slave_pos= `SELECT @@gtid_slave_pos`
if (`SELECT strcmp("$old_slave_pos","") = 0`)
{
    die gtid_slave_pos is empty but should not be;
}

--echo # Using reset_slave_keep_gtid_state=1 should preserve GTID state
--let $master_use_gtid_option=Slave_Pos
--let $reset_slave_keep_gtid_state=1
--source include/reset_slave.inc

--echo # Tagging gtid_slave_pos after reset_slave.inc as new_slave_pos
--let $new_slave_pos= `SELECT @@gtid_slave_pos`
--echo # Validating old_slave_pos == new_slave_pos..
if ($old_slave_pos != $new_slave_pos)
{
    die gtid_slave_pos unexpectedly changed after running reset_slave.inc;
}
--echo # ..success

--echo # Using reset_slave_keep_gtid_state=0 should empty GTID state
--let $master_use_gtid_option=Slave_Pos
--let $reset_slave_keep_gtid_state=0
--source include/reset_slave.inc

--echo # Tagging gtid_slave_pos as new_slave_pos
--let $new_slave_pos= `SELECT @@gtid_slave_pos`
--echo # Validating new_slave_pos is empty..
if (`SELECT strcmp("$new_slave_pos","") != 0`)
{
    die gtid_slave_pos should be empty after reset_slave.inc without keeping gtid state;
}
--echo # ..success
--replace_result $old_slave_pos old_slave_pos
eval set global gtid_slave_pos="$old_slave_pos";
--source include/start_slave.inc

--echo #
--echo # A replica issued CHANGE MASTER TO specified with log coordinates but
--echo # not master_use_gtid=no should warn the user that Using_Gtid is being
--echo # changed to No.
--echo #
--connection master
--source include/save_master_pos.inc
--connection slave
--source include/sync_io_with_master.inc
--let $io_log_pos= query_get_value('SHOW SLAVE STATUS', Read_Master_Log_Pos, 1)
--let $io_log_file= query_get_value('SHOW SLAVE STATUS', Master_Log_File, 1)
--source include/stop_slave.inc
--replace_result $io_log_file io_log_file $io_log_pos io_log_pos
--eval CHANGE MASTER TO master_log_pos=$io_log_pos, master_log_file='$io_log_file'
--source include/start_slave.inc


--echo #
--echo # A replica issued CHANGE MASTER TO specified with log coordinates and
--echo # master_use_gtid=Slave_Pos should warn the user that the log
--echo # coordinates will be ignored.
--echo #
--connection slave
--let $io_log_pos= query_get_value('SHOW SLAVE STATUS', Read_Master_Log_Pos, 1)
--let $io_log_file= query_get_value('SHOW SLAVE STATUS', Master_Log_File, 1)
--let $relay_log_pos= 4
--let $relay_log_file= slave-relay-bin.000001
--source include/stop_slave.inc
--replace_result $io_log_file io_log_file $io_log_pos io_log_pos
--eval CHANGE MASTER TO master_log_pos=$io_log_pos, master_log_file='$io_log_file', master_use_gtid=Slave_Pos
--replace_result $relay_log_file relay_log_file $relay_log_pos relay_log_pos
--eval CHANGE MASTER TO relay_log_pos=$relay_log_pos, relay_log_file='$relay_log_file', master_use_gtid=Slave_Pos
--source include/start_slave.inc

--source include/rpl_end.inc

--echo #
--echo # End of rpl_using_gtid_default.test