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# Copyright 2020-2024 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
from vyos.configtree import ConfigTree
def migrate(config: ConfigTree) -> None:
if not config.exists(['protocols', 'bgp']):
# Nothing to do
return
# Check if BGP is actually configured and obtain the ASN
asn_list = config.list_nodes(['protocols', 'bgp'])
if asn_list:
# There's always just one BGP node, if any
asn = asn_list[0]
else:
# There's actually no BGP, just its empty shell
return
# Check if BGP scan-time parameter exist
scan_time_param = ['protocols', 'bgp', asn, 'parameters', 'scan-time']
if config.exists(scan_time_param):
# Delete BGP scan-time parameter
config.delete(scan_time_param)
else:
# Do nothing
return
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