"""Configure routing between VLANs."""
# Copyright (C) 2015 Brad Cowie, Christopher Lorier and Joe Stringer.
# Copyright (C) 2015 Research and Education Advanced Network New Zealand Ltd.
# Copyright (C) 2015--2018 The Contributors
#
# 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
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# 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 pytricia
from faucet.conf import Conf, test_config_condition
[docs]class Router(Conf):
"""Implement FAUCET configuration for a router."""
defaults = {
'vlans': None,
}
defaults_types = {
'vlans': list,
}
def __init__(self, _id, dp_id, conf):
self.vlans = []
self.vip_map_by_ipv = {}
super(Router, self).__init__(_id, dp_id, conf)
def __str__(self):
return str(self._id)
[docs] def check_config(self):
super(Router, self).check_config()
test_config_condition(not (isinstance(self.vlans, list) and len(self.vlans) > 1), (
'router %s must have at least 2 VLANs configured' % self))
[docs] def vip_map(self, ipa):
"""Return VIP for IP address, if any."""
if ipa.version in self.vip_map_by_ipv:
result = self.vip_map_by_ipv[ipa.version].get(ipa)
if result:
return result
return (None, None)
[docs] def finalize(self):
for vlan in self.vlans:
for faucet_vip in vlan.faucet_vips:
ipv = faucet_vip.version
if ipv not in self.vip_map_by_ipv:
self.vip_map_by_ipv[ipv] = pytricia.PyTricia(
faucet_vip.ip.max_prefixlen)
self.vip_map_by_ipv[ipv][faucet_vip.network] = (
vlan, faucet_vip)
super(Router, self).finalize()