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#!/usr/bin/env python3
#
# Copyright (C) 2023 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/>.
from sys import exit
from vyos.config import Config
from vyos.template import render
from vyos.utils.process import call
from vyos import ConfigError
from vyos import airbag
airbag.enable()
systemd_service = 'aws-gwlbtun.service'
systemd_override = '/run/systemd/system/aws-gwlbtun.service.d/10-override.conf'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['service', 'aws', 'glb']
if not conf.exists(base):
return None
glb = conf.get_config_dict(base, key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True)
return glb
def verify(glb):
# bail out early - looks like removal from running config
if not glb:
return None
def generate(glb):
if not glb:
return None
render(systemd_override, 'aws/override_aws_gwlbtun.conf.j2', glb)
def apply(glb):
call('systemctl daemon-reload')
if not glb:
call(f'systemctl stop {systemd_service}')
else:
call(f'systemctl restart {systemd_service}')
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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