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Mini Shell
Mini Shell
# -*- coding: utf-8 -*-
'''
Module for OpenStack Management
:codeauthor: Konrad MosoĊ <mosonkonrad@gmail.com>
:maturity: new
:depends: openstack-utils
:platform: linux
'''
# Import python libs
from __future__ import absolute_import, print_function, unicode_literals
import logging
import os.path
# Import salt libs
import salt.utils.files
import salt.utils.stringutils
log = logging.getLogger(__name__)
# Define the module's virtual name
__virtualname__ = 'openstack_mng'
def __virtual__():
'''
Only load this module if openstack-service is installed
'''
if os.path.isfile('/usr/bin/openstack-service'):
return __virtualname__
else:
return (False, 'The openstack-service binary could not be found.')
def start_service(service_name):
'''
Start OpenStack service immediately
CLI Example:
.. code-block:: bash
salt '*' openstack_mng.start_service neutron
'''
os_cmd = ['/usr/bin/openstack-service', 'start', service_name]
return __salt__['cmd.retcode'](os_cmd) == 0
def stop_service(service_name):
'''
Stop OpenStack service immediately
CLI Example:
.. code-block:: bash
salt '*' openstack_mng.stop_service neutron
'''
os_cmd = ['/usr/bin/openstack-service', 'stop', service_name]
return __salt__['cmd.retcode'](os_cmd) == 0
def restart_service(service_name, minimum_running_time=None):
'''
Restart OpenStack service immediately, or only if it's running longer than
specified value
CLI Example:
.. code-block:: bash
salt '*' openstack_mng.restart_service neutron
salt '*' openstack_mng.restart_service neutron minimum_running_time=600
'''
if minimum_running_time:
ret_code = False
# get system services list for interesting openstack service
services = __salt__['cmd.run'](['/usr/bin/openstack-service', 'list', service_name]).split('\n')
for service in services:
service_info = __salt__['service.show'](service)
with salt.utils.files.fopen('/proc/uptime') as rfh:
boot_time = float(
salt.utils.stringutils.to_unicode(
rfh.read()
).split(' ')[0]
)
expr_time = int(service_info.get('ExecMainStartTimestampMonotonic', 0)) / 1000000 < boot_time - minimum_running_time
expr_active = service_info.get('ActiveState') == "active"
if expr_time or not expr_active:
# restart specific system service
ret = __salt__['service.restart'](service)
if ret:
ret_code = True
return ret_code
else:
# just restart
os_cmd = ['/usr/bin/openstack-service', 'restart', service_name]
return __salt__['cmd.retcode'](os_cmd) == 0
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