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protocols_ospf.py
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protocols_ospf.py
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#!/usr/bin/env python3
#
# Copyright (C) 2021 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.config import Config
from vyos.configdict import dict_merge
from vyos.template import render
from vyos.template import render_to_string
from vyos.util import call
from vyos.util import dict_search
from vyos import ConfigError
from vyos import frr
from vyos import airbag
airbag.enable()
config_file = r'/tmp/ospf.frr'
DEBUG = os.path.exists('/tmp/ospf.debug')
if DEBUG:
import logging
lg = logging.getLogger("vyos.frr")
lg.setLevel(logging.DEBUG)
ch = logging.StreamHandler()
lg.addHandler(ch)
def get_config():
conf = Config()
base = ['protocols', 'ospf']
ospf = conf.get_config_dict(base, key_mangling=('-', '_'), get_first_key=True)
return ospf
def verify(ospf):
if not ospf:
return None
return None
def generate(ospf):
if not ospf:
ospf['new_frr_config'] = ''
return None
# render(config) not needed, its only for debug
render(config_file, 'frr/ospf.frr.tmpl', ospf)
ospf['new_frr_config'] = render_to_string('frr/ospf.frr.tmpl', ospf)
return None
def apply(ospf):
# Save original configuration prior to starting any commit actions
frr_cfg = frr.FRRConfig()
frr_cfg.load_configuration(daemon='ospfd')
frr_cfg.modify_section(f'router ospf', '')
# Debugging
if DEBUG:
from pprint import pprint
print('')
print('--------- DEBUGGING ----------')
pprint(dir(frr_cfg))
print('Existing config:\n')
for line in frr_cfg.original_config:
print(line)
print(f'Replacement config:\n')
print(f'{ospf["new_frr_config"]}')
print(f'Modified config:\n')
print(f'{frr_cfg}')
frr_cfg.commit_configuration(daemon='ospfd')
# If FRR config is blank, rerun the blank commit x times due to frr-reload
# behavior/bug not properly clearing out on one commit.
if ospf['new_frr_config'] == '':
for a in range(5):
frr_cfg.commit_configuration(daemon='ospfd')
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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