87 lines
3.3 KiB
Python
87 lines
3.3 KiB
Python
# Copyright (c) 2011 OpenStack Foundation.
|
|
# 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 oslo_log import log as logging
|
|
|
|
from mogan.scheduler import filters
|
|
from mogan.scheduler.filters import extra_specs_ops
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class CapabilitiesFilter(filters.BaseNodeFilter):
|
|
"""NodeFilter to work with resource server type records."""
|
|
|
|
def _satisfies_extra_specs(self, capabilities, resource_type):
|
|
"""Check if capabilities satisfy resource type requirements.
|
|
|
|
Check that the capabilities provided by the services satisfy
|
|
the extra specs associated with the resource type.
|
|
"""
|
|
|
|
if not resource_type:
|
|
return True
|
|
|
|
extra_specs = resource_type.get('extra_specs', [])
|
|
if not extra_specs:
|
|
return True
|
|
|
|
for key, req in extra_specs.items():
|
|
|
|
# Either not scoped format, or in capabilities scope
|
|
scope = key.split(':')
|
|
|
|
# Ignore scoped (such as vendor-specific) capabilities
|
|
if len(scope) > 1 and scope[0] != "capabilities":
|
|
continue
|
|
# Strip off prefix if spec started with 'capabilities:'
|
|
elif scope[0] == "capabilities":
|
|
del scope[0]
|
|
|
|
cap = capabilities
|
|
for index in range(len(scope)):
|
|
try:
|
|
cap = cap[scope[index]]
|
|
except (TypeError, KeyError):
|
|
LOG.debug("Node doesn't provide capability '%(cap)s' " %
|
|
{'cap': scope[index]})
|
|
return False
|
|
|
|
# Make all capability values a list so we can handle lists
|
|
cap_list = [cap] if not isinstance(cap, list) else cap
|
|
|
|
# Loop through capability values looking for any match
|
|
for cap_value in cap_list:
|
|
if extra_specs_ops.match(cap_value, req):
|
|
break
|
|
else:
|
|
# Nothing matched, so bail out
|
|
LOG.debug('Flavor extra spec requirement '
|
|
'"%(key)s=%(req)s" does not match reported '
|
|
'capability "%(cap)s"',
|
|
{'key': key, 'req': req, 'cap': cap})
|
|
return False
|
|
return True
|
|
|
|
def node_passes(self, node_state, filter_properties):
|
|
"""Return a list of nodes that can create resource_type."""
|
|
resource_type = filter_properties.get('resource_type')
|
|
if not self._satisfies_extra_specs(node_state.capabilities,
|
|
resource_type):
|
|
LOG.debug("%(node_state)s fails resource_type extra_specs "
|
|
"requirements", {'node_state': node_state})
|
|
return False
|
|
return True
|