Coverage for manila/scheduler/filters/base_host.py: 89%

1# Copyright (c) 2011 OpenStack Foundation. 

2# All Rights Reserved. 

3# 

4# Licensed under the Apache License, Version 2.0 (the "License"); you may 

5# not use this file except in compliance with the License. You may obtain 

6# a copy of the License at 

7# 

8# http://www.apache.org/licenses/LICENSE-2.0 

9# 

10# Unless required by applicable law or agreed to in writing, software 

11# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 

12# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 

13# License for the specific language governing permissions and limitations 

14# under the License. 

15 

16""" 

17Scheduler host filters 

18""" 

19 

20from manila.scheduler.filters import base 

21 

22 

23class BaseHostFilter(base.BaseFilter): 

24 """Base class for host filters.""" 

25 def _filter_one(self, obj, filter_properties): 

26 """Return True if the object passes the filter, otherwise False.""" 

27 return self.host_passes(obj, filter_properties) 

28 

29 def host_passes(self, host_state, filter_properties): 

30 """Return True if the HostState passes the filter, otherwise False. 

31 

32 Override this in a subclass. 

33 """ 

34 raise NotImplementedError() 

35 

36 

37class HostFilterHandler(base.BaseFilterHandler): 

38 def __init__(self, namespace): 

39 super(HostFilterHandler, self).__init__(BaseHostFilter, namespace)