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# Copyright 2016 Red Hat, Inc.
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import functools
import netaddr
from neutron.tests.common.exclusive_resources import ip_address
from neutron.tests.common.exclusive_resources import resource_allocator
def _get_random_network(low, high, netmask):
ip = ip_address.get_random_ip(low, high)
return str(netaddr.IPNetwork("%s/%s" % (ip, netmask)).cidr)
class ExclusiveIPNetwork(resource_allocator.ExclusiveResource):
"""Allocate a non-overlapping ip network.
:ivar network: allocated ip network
:type network: netaddr.IPNetwork
def __init__(self, low, high, netmask):
super(ExclusiveIPNetwork, self).__init__(
functools.partial(_get_random_network, low, high, netmask),
def _setUp(self):
super(ExclusiveIPNetwork, self)._setUp() = netaddr.IPNetwork(self.resource)
def is_valid(self, new_resource, allocated_resources):
new_ipset = netaddr.IPSet([new_resource])
allocated_ipset = netaddr.IPSet(allocated_resources)
return new_ipset.isdisjoint(allocated_ipset)