150 lines
4.5 KiB
Python
150 lines
4.5 KiB
Python
# 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 compute
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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.views import images as images_view
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class Controller(wsgi.Controller):
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"""
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Base `wsgi.Controller` for retrieving and displaying images in the
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OpenStack API. Version-inspecific code goes here.
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"""
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_serialization_metadata = {
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'application/xml': {
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"attributes": {
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"image": ["id", "name", "updated", "created", "status",
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"serverId", "progress"],
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"link": ["rel", "type", "href"],
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},
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},
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}
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_builder_dispatch = {
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"1.0": images_view.ViewBuilderV10,
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"1.1": images_view.ViewBuilderV11,
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}
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def __init__(self, image_service=None, compute_service=None):
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"""
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Initialize new `ImageController`.
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@param compute_service: `nova.compute.api:API`
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@param image_service: `nova.image.service:BaseImageService`
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"""
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_default_service = utils.import_object(flags.FLAGS.image_service)
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self.__compute = compute_service or compute.API()
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self.__image = image_service or _default_service
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def get_builder(self, request):
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"""
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Property to get the ViewBuilder class we need to use.
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"""
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version = common.get_api_version(request)
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base_url = request.application_url
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try:
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return self._builder_dispatch[version](base_url)
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except KeyError:
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raise exc.HTTPNotFound()
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def index(self, req):
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"""
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Return an index listing of images available to the request.
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@param req: `webob.Request` object
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"""
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context = req.environ['nova.context']
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images = self.__image.index(context)
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build = self.get_builder(req).build
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return dict(images=[build(req, image, False) for image in images])
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def detail(self, req):
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"""
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Return a detailed index listing of images available to the request.
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@param req: `webob.Request` object.
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"""
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context = req.environ['nova.context']
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images = self.__image.detail(context)
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build = self.get_builder(req).build
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return dict(images=[build(req, image, True) for image in images])
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def show(self, req, image_id):
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"""
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Return detailed information about a specific image.
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@param req: `webob.Request` object
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@param image_id: Image identifier (integer)
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"""
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context = req.environ['nova.context']
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image = self.__image.show(context, image_id)
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return self.get_builder(req).build(req, image, True)
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def delete(self, req, image_id):
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"""
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Delete an image, if allowed.
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@param req: `webob.Request` object
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@param image_id: Image identifier (integer)
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"""
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context = req.environ['nova.context']
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self.__image.delete(context, image_id)
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return exc.HTTPNoContent()
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def create(self, req):
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"""
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Snapshot a server instance and save the image.
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@param req: `webob.Request` object
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"""
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context = req.environ['nova.context']
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body = req.body
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content_type = req.get_content_type()
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image = self._deserialize(body, content_type)
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if not image:
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raise exc.HTTPBadRequest()
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try:
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server_id = image["image"]["serverId"]
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image_name = image["image"]["name"]
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except KeyError:
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raise exc.HTTPBadRequest()
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image = self.__compute.snapshot(context, server_id, image_name)
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return self.get_builder(req).build(req, image, True)
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class ControllerV10(Controller):
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"""
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Version 1.0 specific controller logic.
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"""
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pass
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class ControllerV11(Controller):
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"""
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Version 1.1 specific controller logic.
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"""
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pass
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