Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
Fetching contributors…

Cannot retrieve contributors at this time

57 lines (52 sloc) 2.375 kb
#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright (C) 2009-2012:
# Gabes Jean, naparuba@gmail.com
# Gerhard Lausser, Gerhard.Lausser@consol.de
# Gregory Starck, g.starck@gmail.com
# Hartmut Goebel, h.goebel@goebel-consult.de
#
# This file is part of Shinken.
#
# Shinken is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Shinken is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Shinken. If not, see <http://www.gnu.org/licenses/>.
"""The AutoSlots Class is a MetaClass: it manages how other classes
are created (Classes, not instances of theses classes).
Here it's role is to create the __slots__ list of the class with
all properties of Class.properties and Class.running_properties
so we do not have to add manually all properties to the __slots__
list when we add a new entry"""
class AutoSlots(type):
# new is call when we create a new Class
# that have metaclass = AutoSlots
# CLS is AutoSlots
# name is string of the Class (like Service)
# bases are the Classes of which Class inherits (like SchedulingItem)
# dct is the new Class dict (like all method of Service)
# Some properties names are not allowed in __slots__ like 2d_coords of
# Host, so we must tag them in properties with no_slots
def __new__(cls, name, bases, dct):
# Thanks to Bertrand Mathieu to the set idea
slots = dct.get('__slots__', set())
# Now get properties from properties and running_properties
if 'properties' in dct:
props = dct['properties']
slots.update((p for p in props
if not props[p].no_slots))
if 'running_properties' in dct:
props = dct['running_properties']
slots.update((p for p in props
if not props[p].no_slots))
dct['__slots__'] = tuple(slots)
return type.__new__(cls, name, bases, dct)
Jump to Line
Something went wrong with that request. Please try again.