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#!/usr/bin/env python3
###############################################################################
# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
# and others #
# #
# All rights reserved. This program and the accompanying materials #
# are made available under the terms of the Apache License, Version 2.0 #
# which accompanies this distribution, and is available at #
# http://www.apache.org/licenses/LICENSE-2.0 #
###############################################################################
# find status of vnic-vconnector link
# vconnector object name defines name of bridge
# use "brctl showmacs <bridge>", then look for the MAC address
import re
import sys
import subprocess
from binary_converter import binary2str
if len(sys.argv) < 3:
print('usage: ' + sys.argv[0] + ' <bridge> <mac_address>')
exit(2)
bridge_name = str(sys.argv[1])
mac_address = str(sys.argv[2])
rc = 0
try:
out = subprocess.check_output(["brctl showmacs " + bridge_name],
stderr=subprocess.STDOUT,
shell=True)
out = binary2str(out)
lines = out.splitlines()
line_number = 1
line = ''
found = False
while line_number < len(lines):
line = lines[line_number]
if mac_address in line:
found = True
break
line_number += 1
state_match = re.match('^\W+([A-Z]+)', line)
if not found:
rc = 2
print('Error: failed to find MAC {}:\n{}\n'
.format(mac_address, out))
else:
# grab "is local?" and "ageing timer" values
line_parts = line.split() # port, mac address, is local?, ageing timer
is_local = line_parts[2]
ageing_timer = line_parts[3]
msg_format =\
'vConnector bridge name: {}\n'\
'vNIC MAC address: {}\n'\
'is local: {}\n'\
'ageing timer: {}\n'\
'vNIC MAC address: {}\n'\
'command: brctl showmacs {}\n'\
'output:\n{}'
msg = msg_format.format(bridge_name, mac_address, is_local,
ageing_timer, mac_address, bridge_name, out)
print(msg)
except subprocess.CalledProcessError as e:
print("Error finding MAC {}: {}\n"
.format(mac_address, binary2str(e.output)))
rc = 2
exit(rc)
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