def _get_cell_mapping(self):
session = db_api.get_api_session()
with session.begin():
cell_map = (session.query(api_models.CellMapping).join(
api_models.HostMapping).filter(
api_models.HostMapping.host == self.host).first())
if cell_map is not None:
return CellMapping._from_db_object(self._context,
CellMapping(), cell_map)
def _from_db_object(context, host_mapping, db_host_mapping):
for key in host_mapping.fields:
db_value = db_host_mapping.get(key)
if key == "cell_mapping":
# NOTE(dheeraj): If cell_mapping is stashed in db object
# we load it here. Otherwise, lazy loading will happen
# when .cell_mapping is accessd later
if not db_value:
continue
db_value = CellMapping._from_db_object(host_mapping._context,
CellMapping(), db_value)
setattr(host_mapping, key, db_value)
host_mapping.obj_reset_changes()
host_mapping._context = context
return host_mapping
def _get_cell_mapping(self):
session = db_api.get_api_session()
with session.begin():
cell_map = (session.query(api_models.CellMapping)
.join(api_models.HostMapping)
.filter(api_models.HostMapping.host == self.host)
.first())
if cell_map is not None:
return CellMapping._from_db_object(
self._context, CellMapping(), cell_map)
def _from_db_object(context, host_mapping, db_host_mapping):
for key in host_mapping.fields:
db_value = db_host_mapping.get(key)
if key == "cell_mapping":
# NOTE(dheeraj): If cell_mapping is stashed in db object
# we load it here. Otherwise, lazy loading will happen
# when .cell_mapping is accessd later
if not db_value:
continue
db_value = CellMapping._from_db_object(
host_mapping._context, CellMapping(), db_value)
setattr(host_mapping, key, db_value)
host_mapping.obj_reset_changes()
host_mapping._context = context
return host_mapping
