def create_subnet(self, context, label, tenant_id,
quantum_net_id, priority, cidr=None,
gateway=None, gateway_v6=None, cidr_v6=None,
dns1=None, dns2=None):
"""Re-use the basic FlatManager create_networks method to
initialize the networks and fixed_ips tables in Engine DB.
Also stores a few more fields in the networks table that
are needed by Quantum but not the FlatManager.
"""
admin_context = context.elevated()
subnet_size = len(netaddr.IPNetwork(cidr))
networks = manager.FlatManager.create_networks(self.net_manager,
admin_context, label, cidr,
False, 1, subnet_size, cidr_v6, gateway,
gateway_v6, quantum_net_id, None, dns1, dns2)
if len(networks) != 1:
raise Exception(_("Error creating network entry"))
network = networks[0]
net = {"project_id": tenant_id,
"priority": priority,
"uuid": quantum_net_id}
db.network_update(admin_context, network['id'], net)
