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restart.py
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#!/usr/bin/env python3
#
# Copyright (C) 2024 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 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 sys
import typing
import vyos.opmode
from vyos.configquery import ConfigTreeQuery
from vyos.utils.process import call
from vyos.utils.commit import commit_in_progress
config = ConfigTreeQuery()
service_map = {
'dhcp': {
'systemd_service': 'kea-dhcp4-server',
'path': ['service', 'dhcp-server'],
},
'dhcpv6': {
'systemd_service': 'kea-dhcp6-server',
'path': ['service', 'dhcpv6-server'],
},
'dns_dynamic': {
'systemd_service': 'ddclient',
'path': ['service', 'dns', 'dynamic'],
},
'dns_forwarding': {
'systemd_service': 'pdns-recursor',
'path': ['service', 'dns', 'forwarding'],
},
'igmp_proxy': {
'systemd_service': 'igmpproxy',
'path': ['protocols', 'igmp-proxy'],
},
'ipsec': {
'systemd_service': 'strongswan',
'path': ['vpn', 'ipsec'],
},
'mdns_repeater': {
'systemd_service': 'avahi-daemon',
'path': ['service', 'mdns', 'repeater'],
},
'reverse_proxy': {
'systemd_service': 'haproxy',
'path': ['load-balancing', 'reverse-proxy'],
},
'router_advert': {
'systemd_service': 'radvd',
'path': ['service', 'router-advert'],
},
'snmp': {
'systemd_service': 'snmpd',
},
'ssh': {
'systemd_service': 'ssh',
},
'suricata': {
'systemd_service': 'suricata',
},
'vrrp': {
'systemd_service': 'keepalived',
'path': ['high-availability', 'vrrp'],
},
'webproxy': {
'systemd_service': 'squid',
},
}
services = typing.Literal[
'dhcp',
'dhcpv6',
'dns_dynamic',
'dns_forwarding',
'igmp_proxy',
'ipsec',
'mdns_repeater',
'reverse_proxy',
'router_advert',
'snmp',
'ssh',
'suricata',
'vrrp',
'webproxy',
]
def _verify(func):
"""Decorator checks if DHCP(v6) config exists"""
from functools import wraps
@wraps(func)
def _wrapper(*args, **kwargs):
config = ConfigTreeQuery()
name = kwargs.get('name')
human_name = name.replace('_', '-')
if commit_in_progress():
print(f'Cannot restart {human_name} service while a commit is in progress')
sys.exit(1)
# Get optional CLI path from service_mapping dict
# otherwise use "service name" CLI path
path = ['service', name]
if 'path' in service_map[name]:
path = service_map[name]['path']
# Check if config does not exist
if not config.exists(path):
raise vyos.opmode.UnconfiguredSubsystem(
f'Service {human_name} is not configured!'
)
if config.exists(path + ['disable']):
raise vyos.opmode.UnconfiguredSubsystem(
f'Service {human_name} is disabled!'
)
return func(*args, **kwargs)
return _wrapper
@_verify
def restart_service(raw: bool, name: services, vrf: typing.Optional[str]):
systemd_service = service_map[name]['systemd_service']
if vrf:
call(f'systemctl restart "{systemd_service}@{vrf}.service"')
else:
call(f'systemctl restart "{systemd_service}.service"')
if __name__ == '__main__':
try:
res = vyos.opmode.run(sys.modules[__name__])
if res:
print(res)
except (ValueError, vyos.opmode.Error) as e:
print(e)
sys.exit(1)

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