66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
# Copyright 2013 Rackspace Hosting
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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 nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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ALIAS = "image-size"
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authorize = extensions.os_compute_soft_authorizer(ALIAS)
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class ImageSizeController(wsgi.Controller):
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def _extend_image(self, image, image_cache):
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key = "OS-EXT-IMG-SIZE:size"
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image[key] = image_cache['size']
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@wsgi.extends
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def show(self, req, resp_obj, id):
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context = req.environ["nova.context"]
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if authorize(context):
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image_resp = resp_obj.obj['image']
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# image guaranteed to be in the cache due to the core API adding
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# it in its 'show' method
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image_cached = req.get_db_item('images', image_resp['id'])
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self._extend_image(image_resp, image_cached)
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@wsgi.extends
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def detail(self, req, resp_obj):
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context = req.environ['nova.context']
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if authorize(context):
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images_resp = list(resp_obj.obj['images'])
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# images guaranteed to be in the cache due to the core API adding
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# it in its 'detail' method
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for image in images_resp:
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image_cached = req.get_db_item('images', image['id'])
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self._extend_image(image, image_cached)
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class ImageSize(extensions.V21APIExtensionBase):
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"""Adds image size to image listings."""
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name = "ImageSize"
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alias = ALIAS
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version = 1
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def get_controller_extensions(self):
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controller = ImageSizeController()
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extension = extensions.ControllerExtension(self, 'images', controller)
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return [extension]
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def get_resources(self):
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return []
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