text: # Copyright 2014 Red Hat, Inc.
  #
  #    Licensed under the Apache License, Version 2.0 (the "License"); you may
  #    not use this file except in compliance with the License. You may obtain
  #    a copy of the License at
  #
  #         http://www.apache.org/licenses/LICENSE-2.0
  #
  #    Unless required by applicable law or agreed to in writing, software
  #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  #    License for the specific language governing permissions and limitations
  #    under the License.
  
  """
  Startup notification using a shell script or systemd NOTIFY_SOCKET
  style notification
  """
  
  from heat.openstack.common import importutils
  from heat.openstack.common import log as logging
  from heat.openstack.common import processutils
  
  logger = logging.getLogger(__name__)
  
  
  def startup_notify(notify_param):
      if not notify_param or notify_param == "":
          return
      try:
          notifier = importutils.import_module(notify_param)
      except ImportError:
          try:
              processutils.execute(notify_param, shell=True)
          except Exception as e:
              logger.error(_('Failed to execute onready command: %s') % str(e))
      else:
          notifier.notify()
  