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# Copyright (c) 2011-2012 OpenStack, LLC.
# 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.
from openstack.common.scheduler import filters
class AvailabilityZoneFilter(filters.BaseHostFilter):
"""Filters Hosts by availability zone."""
def host_passes(self, host_state, filter_properties):
spec = filter_properties.get('request_spec', {})
props = spec.get('resource_properties', [])
availability_zone = props.get('availability_zone')
if availability_zone:
return availability_zone == host_state.service['availability_zone']
return True
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