def _load_from_db(self, max_age, session, expired_is_error=False):
try:
vpno = controller.get_vpno_obj(
vendor=self._vendor._name, ident=self._canonical_repr,
vpno=self._vpno, session=session
)
data_ts = vpno.updated_at.timestamp
now = time.time()
if now - data_ts > max_age:
# TODO Populate part anyway here, and use sourcing maintenance
# queue to refresh in the background.
raise DBPartDataExpired
self._vqtyavail = vpno.detail.vqtyavail
self._manufacturer = vpno.detail.manufacturer
self._mpartno = vpno.detail.mpartno
self._vpartdesc = vpno.detail.vpartdesc
self._pkgqty = vpno.detail.pkgqty
self._last_updated = vpno.updated_at
self._vparturl = vpno.detail.vparturl
for price in vpno.prices:
self.add_price(
VendorPrice(int(price.moq), float(price.price),
self._vendor.currency, int(price.oqmultiple))
)
return vpno
except NoResultFound:
raise DBPartDataUnavailable
except AttributeError:
raise DBPartDataIncomplete
def _commit_to_db(self, session):
vpno = controller.get_vpno_obj(
vendor=self._vendor._name, ident=self._canonical_repr,
vpno=self._vpno, session=session
)
controller.populate_vpart_detail(
vpno=vpno, vpart=self, session=session
)
controller.populate_vpart_prices(
vpno=vpno, vpart=self, session=session
)
return vpno