+
+function upgrade_to_8(){
+ echo " upgrade database from version 0.7 to version 0.8"
+ echo " add column 'checksum' to 'images'"
+ echo "ALTER TABLE images ADD COLUMN checksum VARCHAR(32) NULL AFTER name;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "INSERT INTO schema_version (version_int, version, openvim_ver, comments, date) VALUES (8, '0.8', '0.4.10', 'add column checksum to images', '2016-09-30');"| $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+function downgrade_from_8(){
+ echo " downgrade database from version 0.8 to version 0.7"
+ echo " remove column 'checksum' from 'images'"
+ echo "ALTER TABLE images DROP COLUMN checksum;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "DELETE FROM schema_version WHERE version_int = '8';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+
+function upgrade_to_9(){
+ echo " upgrade database from version 0.8 to version 0.9"
+ echo " change types at 'ports'"
+ echo "ALTER TABLE ports CHANGE COLUMN type type ENUM('instance:bridge','instance:data','external','instance:ovs','controller:ovs') NOT NULL DEFAULT 'instance:bridge' AFTER status;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "INSERT INTO schema_version (version_int, version, openvim_ver, comments, date) VALUES (9, '0.9', '0.5.2', 'add column checksum to images', '2016-09-30');"| $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+function downgrade_from_9(){
+ echo " downgrade database from version 0.9 to version 0.8"
+ echo " change back types at 'ports'"
+ echo "ALTER TABLE ports CHANGE COLUMN type type ENUM('instance:bridge','instance:data','external') NOT NULL DEFAULT 'instance:bridge' AFTER status;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "DELETE FROM schema_version WHERE version_int = '9';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}