pymin/services/vrrp/__init__.py

   1 # vim: set encoding=utf-8 et sw=4 sts=4 :
   2
   3 import os
   4 from os import path
   5 from signal import SIGTERM
   6 from subprocess import Popen, PIPE
   7
   8 from pymin import procman
   9 from pymin.seqtools import Sequence
  10 from pymin.dispatcher import Handler, handler, HandlerError
  11 from pymin.services.util import Restorable, TransactionalHandler, \
  12                                 ReloadHandler, RestartHandler, \
  13                                 ServiceHandler, ParametersHandler, call
  14
  15 __ALL__ = ('VrrpHandler',)
  16
  17 # FIXME the the command should not use new parameters unless commit where called
  18 #       i.e. integrate commit with procman to update internal procman parameters.
  19 class VrrpHandler(Restorable, ParametersHandler, ReloadHandler, RestartHandler,
  20                         ServiceHandler, TransactionalHandler):
  21
  22     handler_help = u"Manage VRRP service"
  23
  24     _persistent_attrs = ['params']
  25
  26     _restorable_defaults = dict(
  27         params = dict(
  28                 ipaddress='192.168.0.1',
  29                 id = '1',
  30                 prio = '',
  31                 dev = 'eth0',
  32                 persist = True,
  33             ),
  34         )
  35
  36     @property
  37     def _command(self):
  38         command = ['vrrpd', '-i', self.params['dev'], '-v', self.params['id']]
  39         if self.params['prio']:
  40             command.extend(('-p', self.params['prio']))
  41         command.append(self.params['ipaddress'])
  42         return command
  43
  44     def _service_start(self):
  45         procinfo = procman.get('vrrp')
  46         procinfo.command = self._command
  47         procinfo.persist = self.params['persist']
  48         procman.start('vrrp')
  49
  50     def _service_stop(self):
  51         procman.stop('vrrp')
  52
  53     def _service_restart(self):
  54         procinfo = procman.get('vrrp')
  55         procinfo.command = self._command
  56         procinfo.persist = self.params['persist']
  57         procman.restart('vrrp')
  58
  59     def __init__(self, pickle_dir='.', config_dir='.', pid_dir='.'):
  60         self._persistent_dir = pickle_dir
  61         self._pid_dir = pid_dir
  62         procman.register('vrrp', None)
  63         ServiceHandler.__init__(self)
  64
  65
  66 if __name__ == '__main__':
  67     v = VrrpHandler()
  68     v.set('prio','10')
  69     v.commit()
  70