+function upgrade_to_20(){
+ # echo " upgrade database from version 0.19 to version 0.20"
+ echo " add column 'sdn_net_id' at table 'instance_nets' and columns 'sdn_port_id', 'compute_node', 'pci' and 'vlan' to table 'instance_interfaces'"
+ echo "ALTER TABLE instance_nets ADD sdn_net_id varchar(36) DEFAULT NULL NULL COMMENT 'Network id in ovim';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces ADD sdn_port_id varchar(36) DEFAULT NULL NULL COMMENT 'Port id in ovim';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces ADD compute_node varchar(100) DEFAULT NULL NULL COMMENT 'Compute node id used to specify the SDN port mapping';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces ADD pci varchar(12) DEFAULT NULL NULL COMMENT 'PCI of the physical port in the host';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces ADD vlan SMALLINT UNSIGNED DEFAULT NULL NULL COMMENT 'VLAN tag used by the port';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "INSERT INTO schema_version (version_int, version, openmano_ver, comments, date) VALUES (20, '0.20', '0.5.9', 'Added columns to store dataplane connectivity info', '2017-03-13');" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+function downgrade_from_20(){
+ # echo " downgrade database from version 0.20 to version 0.19"
+ echo " remove column 'sdn_net_id' at table 'instance_nets' and columns 'sdn_port_id', 'compute_node', 'pci' and 'vlan' to table 'instance_interfaces'"
+ echo "ALTER TABLE instance_nets DROP COLUMN sdn_net_id;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces DROP COLUMN vlan;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces DROP COLUMN pci;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces DROP COLUMN compute_node;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "ALTER TABLE instance_interfaces DROP COLUMN sdn_port_id;" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+ echo "DELETE FROM schema_version WHERE version_int='20';" | $DBCMD || ! echo "ERROR. Aborted!" || exit -1
+}
+