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

Complexity

Total Complexity

1

Size/Duplication

Total Lines	37
Duplicated Lines	0 %

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	PrefixOpaque.unpack()	0	3	1

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

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

from struct import pack
from struct import unpack

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 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            |
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     //              Opaque Prefix Attributes  (variable)           //
#     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
#     https://tools.ietf.org/html/rfc7752#section-3.3.3.6
#


@LinkState.register()
class PrefixOpaque(BaseLS):
    TLV = 1157
    REPR = 'Opaque Prefix Attribute'
    JSON = 'opaque-prefix'

    @classmethod
    def unpack(cls, data, length):
        return cls(unpack("!%ds" % length, data[:length])[0])