Sunil Mohan Adapa f2b4dca4eb actions: Add more action utilities
- Utilities for enabling, disabling, restarting and getting enabled
  status of a service.

- Currently they are based on systemd but they can be extended to work
  with sysvinit also.

- Enable and disable also synchronize state with sysvinit.
2015-05-27 22:45:18 +05:30

66 lines
2.2 KiB
Python

#
# This file is part of Plinth.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
Python action utility functions.
"""
import subprocess
def service_is_running(servicename):
"""Evaluates whether a service is currently running. Returns boolean"""
try:
output = subprocess.check_output(['service', servicename, 'status'])
except subprocess.CalledProcessError:
# Usually if a service is not running we get a status code != 0 and
# thus a CalledProcessError
return False
else:
running = False # default value
for line in output.decode('utf-8').split('\n'):
if 'Active' in line and 'running' in line:
running = True
break
return running
def service_is_enabled(service_name):
"""Check if service is enabled in systemd."""
try:
subprocess.check_output(['systemctl', 'is-enabled', service_name])
return True
except subprocess.CalledProcessError:
return False
def service_enable(service_name):
"""Enable and start a service in systemd and sysvinit using update-rc.d."""
subprocess.call(['systemctl', 'enable', service_name])
subprocess.call(['systemctl', 'start', service_name])
def service_disable(service_name):
"""Disable and stop service in systemd and sysvinit using update-rc.d."""
subprocess.call(['systemctl', 'stop', service_name])
subprocess.call(['systemctl', 'disable', service_name])
def service_restart(service_name):
"""Restart service with systemd."""
subprocess.call(['systemctl', 'restart', service_name])