--source include/have_multi_ndb.inc
--source suite/ndb/include/backup_restore_setup.inc

--echo #
--echo # WL#12731: Improve database synchronization during mysqld startup
--echo #

# Test the database discovery in mysqlds during startup.
# This is done by the following steps :
# 1. Bring up a cluster with multiple mysqlds connected to it.
# 2. Create few databases and tables on both of them.
# 3. Bring down one mysqld.
# 4. Create, alter, drop databases in the other mysqld.
# 5. Start the mysqld which was down and check if the databases are in expected states.

--echo # Setup - create few databases and tables so that the alter and drop statements can be tested.
--connection server1
create database alter_db1 charset utf8mb4;
create table alter_db1.t1 (a int);

create database drop_db1;
create database drop_db2;
create table drop_db2.t1(a int) engine ndb;
create database drop_db3;
create table drop_db3.t1(a int);

create database restore_db1;
create table restore_db1.t1(a int) engine ndb;
create database restore_db2 charset latin1;
create table restore_db2.t1(a int) engine ndb;
create database restore_db3 charset latin1;
create table restore_db3.t1(a int) engine ndb;

--echo # Take a backup of the current setup
--source include/ndb_backup.inc
--echo # Drop restore_db1,restore_db2 to check how the server startup handles database restores
drop database restore_db1;
drop database restore_db2;

--echo #
--echo # Shutdown Server1
--echo #
# Write file to make mysql-test-run.pl expect the restart,
# but don't start it until it's told to.
--write_file $MYSQLTEST_VARDIR/tmp/mysqld.1.1.expect
wait
EOF
# Send shutdown to the connected server and give
# it 30 seconds to die before zapping it.
shutdown_server 30;
# Wait until server is gone.
--source include/wait_until_disconnected.inc

--echo #
--echo # Run DDLs on Server2 when server1 is down
--echo #
--connection server2

--echo # Create a database
create database create_db;
--echo # Add tables to it
create table create_db.t1(a int) engine ndb;
create table create_db.t2(a int);

--echo # Alter already existing databases
alter database alter_db1 charset latin1;
--echo # Create and alter a database
create database alter_db2 charset utf8mb4;
alter database alter_db2 charset latin1;

--echo # Drop databases
drop database drop_db1;
drop database drop_db2;
drop database drop_db3;

--echo # Drop database restore_db3 and then restore restore_db1, restore_db2, restore_db3
drop database restore_db3;
--exec $NDB_RESTORE -b $the_backup_id -n 1 -m --include-databases=restore_db1,restore_db2,restore_db3 $NDB_BACKUPS-$the_backup_id >> $NDB_TOOLS_OUTPUT

--echo #
--echo # Startup server1
--echo #
--connection server1
# Write file to make mysql-test-run.pl start up the server again.
--append_file $MYSQLTEST_VARDIR/tmp/mysqld.1.1.expect
restart
EOF
# Turn on reconnect.
--enable_reconnect
# Call script that will poll the server waiting for it to be back online again.
--source include/wait_until_connected_again.inc
# Turn off reconnect again.
--disable_reconnect

--echo #
--echo # Now check that the databases are in expected states
--echo #

--echo # Verify that create_db has been discovered
show create database create_db;
--echo # Verify t1 has been created. t2 won't be as it is local to Server 2.
show tables from create_db;
show create table create_db.t1;
--error ER_NO_SUCH_TABLE
show create table create_db.t2;

--echo # Verify that the database alter_db1 were properly altered
show create database alter_db1;
--echo # Check that alter_db2 is created and altered
show create database alter_db2;

--echo # Check the states of databases that were dropped
--echo # Databases drop_db1 and drop_db2 should be dropped.
--error ER_BAD_DB_ERROR
show create database drop_db1;
--error ER_BAD_DB_ERROR
show create database drop_db2;
--echo # Database drop_db3 should be preserved.
show create database drop_db3;
# Also, suppress the warning that would have been generated during startup
--disable_query_log ONCE
call mtr.add_suppression("Database 'drop_db3' has tables. Skipped dropping it");

--echo # Check that the databases and tables that were
--echo # dropped and restored are now discovered
show create database restore_db1;
show create table restore_db1.t1;

--echo # restore_db2 was dropped when both mysqlds were alive
--echo # so it would have been discovered with default charset
show create database restore_db2;
show create table restore_db2.t1;

--echo # restore_db3 was dropped when server1 was down
--echo # when server1 came up, it should have been
--echo # preserved the database with previous setting
show create database restore_db3;
show create table restore_db3.t1;
# Also, suppress the warning that would have been generated during startup
--disable_query_log ONCE
call mtr.add_suppression("Database 'restore_db3' has tables. Skipped dropping it");

--echo #
--echo # Cleanup
--echo #

--connection server2
drop table create_db.t2;
--connection server1
drop table drop_db3.t1;

drop database create_db;
drop database alter_db1;
drop database alter_db2;
drop database drop_db3;
drop database restore_db1;
drop database restore_db2;
drop database restore_db3;

--source suite/ndb/include/backup_restore_cleanup.inc
--remove_file $NDB_TOOLS_OUTPUT