blob: 8efc816cb37f573d9e0c6355a864437a44e9d035 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#!/usr/bin/env python3
#
# Copyright (C) 2022 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 json
import os
from vyos.config import Config
from vyos.configdict import node_changed
from vyos.util import cmd
from vyos.util import call
from vyos.template import render
from vyos import ConfigError
from vyos import airbag
airbag.enable()
systemd_dir = '/etc/systemd/system'
systemd_service = 'vyos-event-handler'
service_path = f'{systemd_dir}/{systemd_service}.service'
event_conf = '/run/vyos-event-handler.conf'
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['system', 'event-handler']
event = conf.get_config_dict(base, get_first_key=True, no_tag_node_value_mangle=True)
return event
def verify(event):
# bail out early - looks like removal from running config
if not event:
return None
for name, event_config in event.items():
if 'pattern' not in event_config or 'script' not in event_config:
raise ConfigError(f'Event-handler "pattern and script" are mandatory!')
def generate(event):
if not event:
return None
conf_json = json.dumps(event, indent = 4)
with open(event_conf, 'w') as f:
f.write(conf_json)
render(service_path, 'event-handler/systemd_event_handler_service.j2', event)
return None
def apply(event):
call('systemctl daemon-reload')
if event:
call(f'systemctl restart {systemd_service}.service')
else:
call(f'systemctl stop {systemd_service}.service')
for f in [service_path, event_conf]:
if os.path.isfile(f):
os.unlink(f)
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
