def downgrade(self, version):
try:
#version for migrate should be valid int - else skip
if version in ('base', None):
version = self.init_version
version = int(version)
return migration.db_sync(
self.repository, version,
init_version=self.init_version)
except ValueError:
LOG.error(
_('Migration number for migrate plugin must be valid '
'integer or empty, if you want to downgrade '
'to initial state')
)
raise
def upgrade(self, version):
version = None if version == 'head' else version
return migration.db_sync(
self.repository, version,
init_version=self.init_version)