61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
# Copyright 2013 OpenStack Foundation
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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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import webob.exc
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from cinder.api import extensions
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from cinder.api.openstack import wsgi
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from cinder.i18n import _
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LOG = logging.getLogger(__name__)
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class SchedulerHintsController(wsgi.Controller):
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@staticmethod
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def _extract_scheduler_hints(body):
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hints = {}
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attr = '%s:scheduler_hints' % Scheduler_hints.alias
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try:
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if attr in body:
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hints.update(body[attr])
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except ValueError:
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msg = _("Malformed scheduler_hints attribute")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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return hints
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@wsgi.extends
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def create(self, req, body):
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hints = self._extract_scheduler_hints(body)
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if 'volume' in body:
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body['volume']['scheduler_hints'] = hints
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yield
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class Scheduler_hints(extensions.ExtensionDescriptor):
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"""Pass arbitrary key/value pairs to the scheduler."""
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name = "SchedulerHints"
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alias = "OS-SCH-HNT"
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updated = "2013-04-18T00:00:00+00:00"
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def get_controller_extensions(self):
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controller = SchedulerHintsController()
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ext = extensions.ControllerExtension(self, 'volumes', controller)
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return [ext]
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