73 lines
2.9 KiB
Python
73 lines
2.9 KiB
Python
# Copyright (c) 2012 OpenStack Foundation
|
|
# Copyright (c) 2012 Cloudscaling
|
|
# 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 nova import db
|
|
from nova.openstack.common import log as logging
|
|
from nova.scheduler import filters
|
|
from nova.scheduler.filters import extra_specs_ops
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
_SCOPE = 'aggregate_instance_extra_specs'
|
|
|
|
|
|
class AggregateInstanceExtraSpecsFilter(filters.BaseHostFilter):
|
|
"""AggregateInstanceExtraSpecsFilter works with InstanceType records."""
|
|
|
|
# Aggregate data and instance type does not change within a request
|
|
run_filter_once_per_request = True
|
|
|
|
def host_passes(self, host_state, filter_properties):
|
|
"""Return a list of hosts that can create instance_type
|
|
|
|
Check that the extra specs associated with the instance type match
|
|
the metadata provided by aggregates. If not present return False.
|
|
"""
|
|
instance_type = filter_properties.get('instance_type')
|
|
if 'extra_specs' not in instance_type:
|
|
return True
|
|
|
|
context = filter_properties['context']
|
|
metadata = db.aggregate_metadata_get_by_host(context, host_state.host)
|
|
|
|
for key, req in instance_type['extra_specs'].iteritems():
|
|
# Either not scope format, or aggregate_instance_extra_specs scope
|
|
scope = key.split(':', 1)
|
|
if len(scope) > 1:
|
|
if scope[0] != _SCOPE:
|
|
continue
|
|
else:
|
|
del scope[0]
|
|
key = scope[0]
|
|
aggregate_vals = metadata.get(key, None)
|
|
if not aggregate_vals:
|
|
LOG.debug("%(host_state)s fails instance_type extra_specs "
|
|
"requirements. Extra_spec %(key)s is not in aggregate.",
|
|
{'host_state': host_state, 'key': key})
|
|
return False
|
|
for aggregate_val in aggregate_vals:
|
|
if extra_specs_ops.match(aggregate_val, req):
|
|
break
|
|
else:
|
|
LOG.debug("%(host_state)s fails instance_type extra_specs "
|
|
"requirements. '%(aggregate_vals)s' do not "
|
|
"match '%(req)s'",
|
|
{'host_state': host_state, 'req': req,
|
|
'aggregate_vals': aggregate_vals})
|
|
return False
|
|
return True
|