exabgp.bgp.message.update.attribute.sr.srv6l3vpnsid

Complexity

Total Complexity

6

Size/Duplication

Total Lines	65
Duplicated Lines	52.31 %

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	Srv6L3vpnSid.unpack()	8	8	2
A	Srv6L3vpnSid.__init__()	3	3	1
A	Srv6L3vpnSid.pack()	9	9	1
A	Srv6L3vpnSid.__repr__()	2	2	1
A	Srv6L3vpnSid.json()	2	2	1

# encoding: utf-8
"""
sr/srv6l3vpnsid.py

Created by Hiroki Shirokura 2020-01-09
Copyright (c) 2020 Hiroki Shirokura . All rights reserved.
"""
from struct import pack

from exabgp.util import concat_bytes
from exabgp.protocol.ip import IP

from exabgp.bgp.message.notification import Notify
from exabgp.bgp.message.update.attribute.sr.prefixsid import PrefixSid

# 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            |   RESERVED    |
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# |                                                               |
# |                      L3VPN SID (16 octets)                    |
# |                                                               |
# |                                                               |
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# | 　SID Flags   |       Endpoint Behavior       |   RESERVED    |
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# 3.2.  SRv6 L3 Service


@PrefixSid.register()

This code seems to be duplicated in your project.

class Srv6L3vpnSid(object):
	TLV = 5
	LENGTH = 21

	def __init__ (self,l3vpnsid,packed=None):
		self.l3vpnsid = l3vpnsid
		self.packed = self.pack()

	def __repr__ (self):
		return "srv6-l3vpn-sid %s" % (self.l3vpnsid)

	def pack (self):
		return concat_bytes(
			pack('!B', self.TLV),
			pack('!H', self.LENGTH),
			pack('!B', 0),
			IP.pton(self.l3vpnsid),
			pack('!B', 0),
			pack('!H', 0xffff),
			pack('!B', 0),
		)

	@classmethod
	def unpack (cls,data,length):
		l3vpnsid = -1
		if cls.LENGTH != length:
			raise Notify(3,5, "Invalid TLV size. Should be {0} but {1} received".format(cls.LENGTH, length))
		data = data[1:17]
		l3vpnsid = IP.unpack(data)
		return cls(l3vpnsid=l3vpnsid,packed=data)

	def json (self, compact=None):
		return '"srv6-vpn-sid": "%s"' % (self.l3vpnsid)