65 lines
2.0 KiB
Python
65 lines
2.0 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 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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import webob.exc
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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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 'os:scheduler_hints' in body:
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# NOTE(vish): This is for legacy support
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hints.update(body['os:scheduler_hints'])
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elif attr in body:
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hints.update(body[attr])
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# Fail if non-dict provided
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except ValueError:
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msg = _("Malformed scheduler_hints attribute")
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raise webob.exc.HTTPBadRequest(reason=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 'server' in body:
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body['server']['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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namespace = ("http://docs.openstack.org/compute/ext/"
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"scheduler-hints/api/v2")
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updated = "2011-07-19T00:00:00+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, 'servers', controller)
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return [ext]
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