ifupdown2/ifupdownaddons/systemutils.py

   1 #!/usr/bin/python
   2 #
   3 # Copyright 2015-2017 Cumulus Networks, Inc. All rights reserved.
   4 # Author: Roopa Prabhu, roopa@cumulusnetworks.com
   5 #
   6
   7 import os
   8
   9 try:
  10     from ifupdown2.ifupdown.utils import utils
  11     from ifupdown2.ifupdownaddons.utilsbase import *
  12 except ImportError:
  13     from ifupdown.utils import utils
  14     from ifupdownaddons.utilsbase import *
  15
  16
  17 class systemUtils():
  18     @classmethod
  19     def is_service_running(cls, procname=None, pidfile=None):
  20         utilsobj = utilsBase()
  21         if pidfile:
  22             if os.path.exists(pidfile):
  23                 pid = utilsobj.read_file_oneline(pidfile)
  24                 if not os.path.exists('/proc/%s' %pid):
  25                     return False
  26             else:
  27                 return False
  28             return True
  29
  30         if procname:
  31             try:
  32                 utils.exec_command('%s %s' %
  33                                     (utils.pidof_cmd, procname))
  34             except:
  35                 return False
  36             else:
  37                 return True
  38
  39         return False
  40
  41     @classmethod
  42     def check_service_status(cls, servicename=None):
  43         if not servicename:
  44             return False
  45         try:
  46             utils.exec_commandl([utils.service_cmd,
  47                                  servicename, 'status'])
  48         except Exception:
  49             # XXX: check for subprocess errors vs os error
  50             return False
  51         return True
  52
  53     @classmethod
  54     def is_process_running(self, processname):
  55         if not processname:
  56             return False
  57         try:
  58             utils.exec_command('%s %s' %
  59                                (utils.pidof_cmd, processname))
  60         except:
  61             return False
  62         else:
  63             return True