exabgp.bgp.message.update.attribute.bgpls.prefix.ospfaddr

Complexity

Total Complexity

2

Size/Duplication

Total Lines	37
Duplicated Lines	0 %

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	OspfForwardingAddress.unpack()	0	6	2

# encoding: utf-8
"""
ospfaddr.py

Created by Evelio Vila on 2016-12-01.
Copyright (c) 2014-2017 Exa Networks. All rights reserved.
"""

from exabgp.protocol.ip import IP

from exabgp.bgp.message.notification import Notify
from exabgp.bgp.message.update.attribute.bgpls.linkstate import LinkState
from exabgp.bgp.message.update.attribute.bgpls.linkstate import BaseLS

#      0                   1                   2                   3
#      0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     |              Type             |             Length            |
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     //                Forwarding Address (variable)                //
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     https://tools.ietf.org/html/rfc7752#section-3.3.3.5


@LinkState.register()
class OspfForwardingAddress(BaseLS):
    TLV = 1156
    REPR = 'Ospf forwarding address'
    JSON = 'ospf-forwarding-address'

    @classmethod
    def unpack(cls, data, length):
        size = len(data)
        if size not in (4, 16):
            raise Notify(3, 5, "Error parsing OSPF Forwarding Address. Wrong size")
        return cls(IP.unpack(data[:size]))