def _save_subnet(self, context, network, subnet_args, dns_nameservers,
host_routes, allocation_pools):
allocation_pools = self._prepare_allocation_pools(
context, allocation_pools, subnet_args)
self._validate_subnet_cidr(context, network, subnet_args['cidr'])
self._validate_network_subnetpools(network,
subnet_args['subnetpool_id'],
subnet_args['ip_version'])
subnet = models_v2.Subnet(**subnet_args)
context.session.add(subnet)
if attributes.is_attr_set(dns_nameservers):
for addr in dns_nameservers:
ns = models_v2.DNSNameServer(address=addr, subnet_id=subnet.id)
context.session.add(ns)
if attributes.is_attr_set(host_routes):
for rt in host_routes:
route = models_v2.SubnetRoute(subnet_id=subnet.id,
destination=rt['destination'],
nexthop=rt['nexthop'])
context.session.add(route)
self._save_allocation_pools(context, subnet, allocation_pools)
return subnet
def _save_subnet(self, context,
network,
subnet_args,
dns_nameservers,
host_routes,
subnet_request):
self._validate_subnet_cidr(context, network, subnet_args['cidr'])
self._validate_network_subnetpools(network,
subnet_args['subnetpool_id'],
subnet_args['ip_version'])
subnet = models_v2.Subnet(**subnet_args)
context.session.add(subnet)
# NOTE(changzhi) Store DNS nameservers with order into DB one
# by one when create subnet with DNS nameservers
if attributes.is_attr_set(dns_nameservers):
for order, server in enumerate(dns_nameservers):
dns = models_v2.DNSNameServer(
address=server,
order=order,
subnet_id=subnet.id)
context.session.add(dns)
if attributes.is_attr_set(host_routes):
for rt in host_routes:
route = models_v2.SubnetRoute(
subnet_id=subnet.id,
destination=rt['destination'],
nexthop=rt['nexthop'])
context.session.add(route)
self.save_allocation_pools(context, subnet,
subnet_request.allocation_pools)
return subnet
def _update_subnet_dns_nameservers(self, context, id, s):
old_dns_list = self._get_dns_by_subnet(context, id)
new_dns_addr_set = set(s["dns_nameservers"])
old_dns_addr_set = set([dns['address'] for dns in old_dns_list])
new_dns = list(new_dns_addr_set)
for dns_addr in old_dns_addr_set - new_dns_addr_set:
for dns in old_dns_list:
if dns['address'] == dns_addr:
context.session.delete(dns)
for dns_addr in new_dns_addr_set - old_dns_addr_set:
dns = models_v2.DNSNameServer(address=dns_addr, subnet_id=id)
context.session.add(dns)
del s["dns_nameservers"]
return new_dns
def _update_subnet_dns_nameservers(self, context, id, s):
old_dns_list = self._get_dns_by_subnet(context, id)
new_dns_addr_list = s["dns_nameservers"]
# NOTE(changzhi) delete all dns nameservers from db
# when update subnet's DNS nameservers. And store new
# nameservers with order one by one.
for dns in old_dns_list:
context.session.delete(dns)
for order, server in enumerate(new_dns_addr_list):
dns = models_v2.DNSNameServer(address=server,
order=order,
subnet_id=id)
context.session.add(dns)
del s["dns_nameservers"]
return new_dns_addr_list
