def destroy_baymodel(self, baymodel_id):
session = get_session()
with session.begin():
query = model_query(models.BayModel, session=session)
query = add_identity_filter(query, baymodel_id)
try:
baymodel_ref = query.one()
except NoResultFound:
raise exception.BayModelNotFound(baymodel=baymodel_id)
if self._is_baymodel_referenced(session, baymodel_ref['uuid']):
raise exception.BayModelReferenced(baymodel=baymodel_id)
query.delete()
def _do_update_baymodel(self, baymodel_id, values):
session = get_session()
with session.begin():
query = model_query(models.BayModel, session=session)
query = add_identity_filter(query, baymodel_id)
try:
ref = query.with_lockmode('update').one()
except NoResultFound:
raise exception.BayModelNotFound(baymodel=baymodel_id)
if self.is_baymodel_referenced(session, ref['uuid']):
raise exception.BayModelReferenced(baymodel=baymodel_id)
ref.update(values)
return ref
def destroy_baymodel(self, baymodel_id):
def is_baymodel_referenced(session, baymodel_uuid):
"""Checks whether the baymodel is referenced by bay(s)."""
query = model_query(models.Bay, session=session)
query = self._add_bays_filters(query,
{'baymodel_id': baymodel_uuid})
return query.count() != 0
session = get_session()
with session.begin():
query = model_query(models.BayModel, session=session)
query = add_identity_filter(query, baymodel_id)
try:
baymodel_ref = query.one()
except NoResultFound:
raise exception.BayModelNotFound(baymodel=baymodel_id)
if is_baymodel_referenced(session, baymodel_ref['uuid']):
raise exception.BayModelReferenced(baymodel=baymodel_id)
query.delete()
def test_BayModelReferenced(self):
self.assertRaises(exception.BayModelReferenced,
lambda: self.raise_(exception.BayModelReferenced()))