37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
#
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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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BuildFailure Weigher. Weigh hosts by the number of recent failed boot attempts.
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"""
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import nova.conf
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from nova.scheduler import utils
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from nova.scheduler import weights
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CONF = nova.conf.CONF
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class BuildFailureWeigher(weights.BaseHostWeigher):
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def weight_multiplier(self, host_state):
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"""Override the weight multiplier. Note this is negated."""
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return -1 * utils.get_weight_multiplier(
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host_state, 'build_failure_weight_multiplier',
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CONF.filter_scheduler.build_failure_weight_multiplier)
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def _weigh_object(self, host_state, weight_properties):
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"""Higher weights win. Our multiplier is negative, so reduce our
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weight by number of failed builds.
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"""
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return host_state.failed_builds
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