¡@
OpenStack Study: __init__.py**** CubicPower OpenStack Study ****
# Copyright (c) 2011 OpenStack Foundation # All Rights Reserved. # # 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. """ Scheduler host filters """ from nova import filters
**** CubicPower OpenStack Study **** class BaseHostFilter(filters.BaseFilter): """Base class for host filters."""
**** CubicPower OpenStack Study **** def _filter_one(self, obj, filter_properties): """Return True if the object passes the filter, otherwise False.""" return self.host_passes(obj, filter_properties)
**** CubicPower OpenStack Study **** def host_passes(self, host_state, filter_properties): """Return True if the HostState passes the filter, otherwise False. Override this in a subclass. """ raise NotImplementedError()
**** CubicPower OpenStack Study **** class HostFilterHandler(filters.BaseFilterHandler):
**** CubicPower OpenStack Study **** def __init__(self): super(HostFilterHandler, self).__init__(BaseHostFilter) def all_filters(): """Return a list of filter classes found in this directory. This method is used as the default for available scheduler filters and should return a list of all filter classes available. """ return HostFilterHandler().get_all_classes()
**** CubicPower OpenStack Study **** def all_filters(): """Return a list of filter classes found in this directory. This method is used as the default for available scheduler filters and should return a list of all filter classes available. """ return HostFilterHandler().get_all_classes()
|