95 lines
3.4 KiB
Python
95 lines
3.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack LLC.
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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 webob import exc
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from nova import flags
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from nova import utils
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from nova import wsgi
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from nova.api.openstack import common
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from nova.api.openstack import faults
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FLAGS = flags.FLAGS
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class Controller(common.OpenstackController):
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"""The image metadata API controller for the Openstack API"""
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def __init__(self):
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self.image_service = utils.import_object(FLAGS.image_service)
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super(Controller, self).__init__()
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def _get_metadata(self, context, image_id, image=None):
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if not image:
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image = self.image_service.show(context, image_id)
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metadata = image.get('properties', {})
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return metadata
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def index(self, req, image_id):
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"""Returns the list of metadata for a given instance"""
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context = req.environ['nova.context']
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metadata = self._get_metadata(context, image_id)
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return dict(metadata=metadata)
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def show(self, req, image_id, id):
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context = req.environ['nova.context']
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metadata = self._get_metadata(context, image_id)
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if id in metadata:
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return {id: metadata[id]}
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else:
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return faults.Fault(exc.HTTPNotFound())
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def create(self, req, image_id):
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context = req.environ['nova.context']
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body = self._deserialize(req.body, req.get_content_type())
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img = self.image_service.show(context, image_id)
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metadata = self._get_metadata(context, image_id, img)
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if 'metadata' in body:
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for key, value in body['metadata'].iteritems():
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metadata[key] = value
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img['properties'] = metadata
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self.image_service.update(context, image_id, img, None)
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return dict(metadata=metadata)
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def update(self, req, image_id, id):
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context = req.environ['nova.context']
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body = self._deserialize(req.body, req.get_content_type())
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if not id in body:
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expl = _('Request body and URI mismatch')
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raise exc.HTTPBadRequest(explanation=expl)
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if len(body) > 1:
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expl = _('Request body contains too many items')
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raise exc.HTTPBadRequest(explanation=expl)
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img = self.image_service.show(context, image_id)
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metadata = self._get_metadata(context, image_id, img)
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metadata[id] = body[id]
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img['properties'] = metadata
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self.image_service.update(context, image_id, img, None)
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return req.body
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def delete(self, req, image_id, id):
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context = req.environ['nova.context']
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img = self.image_service.show(context, image_id)
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metadata = self._get_metadata(context, image_id)
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if not id in metadata:
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return faults.Fault(exc.HTTPNotFound())
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metadata.pop(id)
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img['properties'] = metadata
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self.image_service.update(context, image_id, img, None)
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