def validate_obj_azs(self, availability_zones):
"""Verify that the availability zones exist, and only 1 hint
was set.
"""
# For now we support only 1 hint per network/router
# TODO(asarfaty): support multiple hints
if len(availability_zones) > 1:
err_msg = _("Can't use multiple availability zone hints")
raise n_exc.InvalidInput(error_message=err_msg)
# check that all hints appear in the predefined list of availability
# zones
diff = (set(availability_zones) - set(self.get_azs_names()))
if diff:
raise az_ext.AvailabilityZoneNotFound(
availability_zone=diff.pop())
def validate_availability_zones(self, context, resource_type,
availability_zones):
"""Verify that the availability zones exist."""
if not availability_zones:
return
if resource_type == 'network':
agent_type = constants.AGENT_TYPE_DHCP
elif resource_type == 'router':
agent_type = constants.AGENT_TYPE_L3
else:
return
query = context.session.query(Agent.availability_zone).filter_by(
agent_type=agent_type).group_by(Agent.availability_zone)
query = query.filter(Agent.availability_zone.in_(availability_zones))
azs = [item[0] for item in query]
diff = set(availability_zones) - set(azs)
if diff:
raise az_ext.AvailabilityZoneNotFound(availability_zone=diff.pop())
def get_az_by_hint(self, hint):
az = self._availability_zones_data.get_availability_zone(hint)
if not az:
raise az_ext.AvailabilityZoneNotFound(availability_zone=hint)
return az
