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# Copyright (C) 2014 Nippon Telegraph and Telephone Corporation.
#
# 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.
"""
Defines data types and models required specifically for VPNv4 support.
"""
import logging
from ryu.lib.packet.bgp import IPAddrPrefix
from ryu.lib.packet.bgp import RF_IPv4_VPN
from ryu.services.protocols.bgp.info_base.vpn import VpnDest
from ryu.services.protocols.bgp.info_base.vpn import VpnPath
from ryu.services.protocols.bgp.info_base.vpn import VpnTable
LOG = logging.getLogger('bgpspeaker.info_base.vpnv4')
class Vpnv4Dest(VpnDest):
"""VPNv4 Destination
Store IPv4 Paths.
"""
ROUTE_FAMILY = RF_IPv4_VPN
class Vpnv4Table(VpnTable):
"""Global table to store VPNv4 routing information.
Uses `Vpnv4Dest` to store destination information for each known vpnv4
paths.
"""
ROUTE_FAMILY = RF_IPv4_VPN
VPN_DEST_CLASS = Vpnv4Dest
class Vpnv4Path(VpnPath):
"""Represents a way of reaching an VPNv4 destination."""
ROUTE_FAMILY = RF_IPv4_VPN
VRF_PATH_CLASS = None # defined in init - anti cyclic import hack
NLRI_CLASS = IPAddrPrefix
def __init__(self, *args, **kwargs):
super(Vpnv4Path, self).__init__(*args, **kwargs)
from ryu.services.protocols.bgp.info_base.vrf4 import Vrf4Path
self.VRF_PATH_CLASS = Vrf4Path
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