117 lines
4.4 KiB
Python
117 lines
4.4 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 OpenStack Foundation
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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.api.openstack import common
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from nova.api.openstack import wsgi
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from nova import exception
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from nova.image import glance
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class Controller(object):
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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 = glance.get_default_image_service()
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def _get_image(self, context, image_id):
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try:
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return self.image_service.show(context, image_id)
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except exception.NotFound:
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msg = _("Image not found.")
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raise exc.HTTPNotFound(explanation=msg)
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@wsgi.serializers(xml=common.MetadataTemplate)
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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_image(context, image_id)['properties']
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return dict(metadata=metadata)
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@wsgi.serializers(xml=common.MetaItemTemplate)
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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_image(context, image_id)['properties']
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if id in metadata:
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return {'meta': {id: metadata[id]}}
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else:
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raise exc.HTTPNotFound()
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@wsgi.serializers(xml=common.MetadataTemplate)
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@wsgi.deserializers(xml=common.MetadataDeserializer)
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def create(self, req, image_id, body):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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if 'metadata' in body:
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for key, value in body['metadata'].iteritems():
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image['properties'][key] = value
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common.check_img_metadata_properties_quota(context,
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image['properties'])
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image = self.image_service.update(context, image_id, image, None)
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return dict(metadata=image['properties'])
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@wsgi.serializers(xml=common.MetaItemTemplate)
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@wsgi.deserializers(xml=common.MetaItemDeserializer)
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def update(self, req, image_id, id, body):
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context = req.environ['nova.context']
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try:
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meta = body['meta']
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except KeyError:
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expl = _('Incorrect request body format')
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raise exc.HTTPBadRequest(explanation=expl)
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if id not in meta:
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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(meta) > 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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image = self._get_image(context, image_id)
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image['properties'][id] = meta[id]
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common.check_img_metadata_properties_quota(context,
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image['properties'])
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self.image_service.update(context, image_id, image, None)
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return dict(meta=meta)
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@wsgi.serializers(xml=common.MetadataTemplate)
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@wsgi.deserializers(xml=common.MetadataDeserializer)
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def update_all(self, req, image_id, body):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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metadata = body.get('metadata', {})
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common.check_img_metadata_properties_quota(context, metadata)
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image['properties'] = metadata
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self.image_service.update(context, image_id, image, None)
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return dict(metadata=metadata)
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@wsgi.response(204)
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def delete(self, req, image_id, id):
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context = req.environ['nova.context']
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image = self._get_image(context, image_id)
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if id not in image['properties']:
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msg = _("Invalid metadata key")
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raise exc.HTTPNotFound(explanation=msg)
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image['properties'].pop(id)
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self.image_service.update(context, image_id, image, None)
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def create_resource():
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return wsgi.Resource(Controller())
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