# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
|
# Use of this source code is governed by a BSD-style license that can be
|
# found in the LICENSE file.
|
|
"""Provides utility methods for interacting with upstart"""
|
|
import os
|
|
from autotest_lib.client.common_lib import utils
|
|
|
def emit_event(event_name):
|
"""Fails if the emit command fails.
|
|
@param service_name: name of the service.
|
"""
|
utils.system('initctl emit %s' % event_name)
|
|
|
def ensure_running(service_name):
|
"""Fails if |service_name| is not running.
|
|
@param service_name: name of the service.
|
"""
|
cmd = 'initctl status %s | grep start/running' % service_name
|
utils.system(cmd)
|
|
|
def has_service(service_name):
|
"""Returns true if |service_name| is installed on the system.
|
|
@param service_name: name of the service.
|
"""
|
return os.path.exists('/etc/init/' + service_name + '.conf')
|
|
|
def is_running(service_name):
|
"""
|
Returns true if |service_name| is running.
|
|
@param service_name: name of service
|
"""
|
return utils.system_output('status %s' % service_name).find('start/running') != -1
|
|
def restart_job(service_name):
|
"""
|
Restarts an upstart job if it's running.
|
If it's not running, start it.
|
|
@param service_name: name of service
|
"""
|
|
if is_running(service_name):
|
utils.system_output('restart %s' % service_name)
|
else:
|
utils.system_output('start %s' % service_name)
|
|
def stop_job(service_name):
|
"""
|
Stops an upstart job.
|
Fails if the stop command fails.
|
|
@param service_name: name of service
|
"""
|
|
utils.system('stop %s' % service_name)
|
