+function upgrade_to_36(){
+ echo " Allow null for image_id at 'vms'"
+ sql "ALTER TABLE vms ALTER image_id DROP DEFAULT;"
+ sql "ALTER TABLE vms CHANGE COLUMN image_id image_id VARCHAR(36) NULL COMMENT 'Link to image table' AFTER " \
+ "flavor_id;"
+ echo " Enlarge config at 'wims' and 'wim_accounts'"
+ sql "ALTER TABLE wims CHANGE COLUMN config config TEXT NULL DEFAULT NULL AFTER wim_url;"
+ sql "ALTER TABLE wim_accounts CHANGE COLUMN config config TEXT NULL DEFAULT NULL AFTER password;"
+ sql "INSERT INTO schema_version (version_int, version, openmano_ver, comments, date) "\
+ "VALUES (36, '0.36', '0.6.03', 'Allow vm without image_id for PDUs', '2018-12-19');"
+}
+function downgrade_from_36(){
+ echo " Force back not null for image_id at 'vms'"
+ sql "ALTER TABLE vms ALTER image_id DROP DEFAULT;"
+ sql "ALTER TABLE vms CHANGE COLUMN image_id image_id VARCHAR(36) NOT NULL COMMENT 'Link to image table' AFTER " \
+ "flavor_id;"
+ # For downgrade do not restore wims/wim_accounts config to varchar 4000
+ sql "DELETE FROM schema_version WHERE version_int='36';"
+}
+