35 lines
1.3 KiB
Python
35 lines
1.3 KiB
Python
# Copyright (c) 2014 Cisco Systems Inc.
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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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from nova.scheduler.filters import affinity_filter
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from nova.scheduler.solvers import constraints
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class SameHostConstraint(constraints.BaseFilterConstraint):
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"""Schedule the instance on the same host as another instance in a set
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of instances.
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"""
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host_filter_cls = affinity_filter.SameHostFilter
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class DifferentHostConstraint(constraints.BaseFilterConstraint):
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"""Schedule the instance on a different host from a set of instances."""
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host_filter_cls = affinity_filter.DifferentHostFilter
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class SimpleCidrAffinityConstraint(constraints.BaseFilterConstraint):
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"""Schedule the instance on a host with a particular cidr."""
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host_filter_cls = affinity_filter.SimpleCIDRAffinityFilter
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