42 lines
1.4 KiB
Python
42 lines
1.4 KiB
Python
# Copyright (c) 2011 OpenStack, LLC.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Scheduler host filters
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"""
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from kwapi.openstack.common import log as logging
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from kwapi.openstack.common.scheduler import filter
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LOG = logging.getLogger(__name__)
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class BaseHostFilter(filter.BaseFilter):
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"""Base class for host filters."""
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def _filter_one(self, obj, filter_properties):
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"""Return True if the object passes the filter, otherwise False."""
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return self.host_passes(obj, filter_properties)
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def host_passes(self, host_state, filter_properties):
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"""Return True if the HostState passes the filter, otherwise False.
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Override this in a subclass.
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"""
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raise NotImplementedError()
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class HostFilterHandler(filter.BaseFilterHandler):
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def __init__(self, namespace):
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super(HostFilterHandler, self).__init__(BaseHostFilter, namespace)
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