49 lines
1.7 KiB
Python
49 lines
1.7 KiB
Python
# Copyright (c) 2012 OpenStack Foundation
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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 oslo_log import log as logging
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from nova.scheduler import filters
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from nova import servicegroup
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LOG = logging.getLogger(__name__)
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class ComputeFilter(filters.BaseHostFilter):
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"""Filter on active Compute nodes."""
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RUN_ON_REBUILD = False
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def __init__(self):
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self.servicegroup_api = servicegroup.API()
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# Host state does not change within a request
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run_filter_once_per_request = True
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def host_passes(self, host_state, spec_obj):
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"""Returns True for only active compute nodes."""
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service = host_state.service
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if service['disabled']:
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LOG.debug("%(host_state)s is disabled, reason: %(reason)s",
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{'host_state': host_state,
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'reason': service.get('disabled_reason')})
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return False
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else:
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if not self.servicegroup_api.service_is_up(service):
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LOG.warning("%(host_state)s has not been heard from in a "
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"while", {'host_state': host_state})
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return False
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return True
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