97 lines
2.6 KiB
Python
97 lines
2.6 KiB
Python
# Copyright 2019 Red Hat
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from __future__ import absolute_import
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import netaddr
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import tobiko
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from tobiko.openstack.neutron import _client
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def new_ipv4_cidr():
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return tobiko.setup_fixture(IPv4CIDRGeneratorFixture).new_cidr()
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def new_ipv6_cidr():
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return tobiko.setup_fixture(IPv6CIDRGeneratorFixture).new_cidr()
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class CIDRGeneratorFixture(tobiko.SharedFixture):
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cidr = None
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prefixlen = None
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client = None
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config = None
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cidr_generator = None
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def __init__(self, cidr=None, prefixlen=None, client=None):
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super(CIDRGeneratorFixture, self).__init__()
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if cidr:
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self.cidr = cidr
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if prefixlen:
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self.prefixlen = prefixlen
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if client:
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self.client = client
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def setup_fixture(self):
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self.setup_config()
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self.setup_client()
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self.setup_cidr_generator()
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def setup_config(self):
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from tobiko import config
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CONF = config.CONF
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self.config = CONF.tobiko.neutron
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def setup_client(self):
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self.client = _client.neutron_client(self.client)
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def setup_cidr_generator(self):
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self.cidr_generator = self.cidr.subnet(self.prefixlen)
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def new_cidr(self):
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used_cidrs = set(_client.list_subnet_cidrs(client=self.client))
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for cidr in self.cidr_generator:
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if cidr not in used_cidrs:
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return cidr
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raise NoSuchCIDRLeft(cidr=self.cidr, prefixlen=self.prefixlen)
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class IPv4CIDRGeneratorFixture(CIDRGeneratorFixture):
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@property
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def cidr(self):
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return netaddr.IPNetwork(self.config.ipv4_cidr)
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@property
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def prefixlen(self):
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return int(self.config.ipv4_prefixlen)
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class IPv6CIDRGeneratorFixture(CIDRGeneratorFixture):
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@property
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def cidr(self):
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return netaddr.IPNetwork(self.config.ipv6_cidr)
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@property
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def prefixlen(self):
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return int(self.config.ipv6_prefixlen)
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class NoSuchCIDRLeft(tobiko.TobikoException):
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message = ("No such subnet CIDR left "
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"(CIDR={cidr!s}, prefixlen={prefixlen!s})")
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