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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/>.
# T3417: migrate IS-IS tagNode to node as we can only have one IS-IS process
from sys import argv
from sys import exit
from vyos.configtree import ConfigTree
if (len(argv) < 1):
print("Must specify file name!")
exit(1)
file_name = argv[1]
with open(file_name, 'r') as f:
config_file = f.read()
base = ['protocols', 'bgp']
config = ConfigTree(config_file)
if not config.exists(base) or not config.is_tag(base):
# Nothing to do
exit(0)
# Only one BGP process is supported, thus this operation is savea
asn = config.list_nodes(base)
bgp_base = base + asn
# We need a temporary copy of the config
tmp_base = ['protocols', 'bgp2']
config.copy(bgp_base, tmp_base)
# Now it's save to delete the old configuration
config.delete(base)
# Rename temporary copy to new final config and set new "local-as" option
config.rename(tmp_base, 'bgp')
config.set(base + ['local-as'], value=asn[0])
try:
with open(file_name, 'w') as f:
f.write(config.to_string())
except OSError as e:
print(f'Failed to save the modified config: {e}')
exit(1)
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