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interfaces-loopback.py
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interfaces-loopback.py
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#!/usr/bin/env python3
#
# Copyright (C) 2019-2020 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
from sys import exit
from vyos.ifconfig import LoopbackIf
from vyos.config import Config
from vyos import ConfigError, airbag
airbag.enable()
def get_config():
""" Retrive CLI config as dictionary. Dictionary can never be empty,
as at least the interface name will be added or a deleted flag """
conf = Config()
# determine tagNode instance
if 'VYOS_TAGNODE_VALUE' not in os.environ:
raise ConfigError('Interface (VYOS_TAGNODE_VALUE) not specified')
ifname = os.environ['VYOS_TAGNODE_VALUE']
base = ['interfaces', 'loopback', ifname]
loopback = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
# Check if interface has been removed
if loopback == {}:
loopback.update({'deleted' : ''})
# store interface instance name in dictionary
loopback.update({'ifname': ifname})
return loopback
def verify(loopback):
return None
def generate(loopback):
return None
def apply(loopback):
l = LoopbackIf(loopback['ifname'])
if 'deleted' in loopback.keys():
l.remove()
else:
l.update(loopback)
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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