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OpenStack Study: controller.py**** CubicPower OpenStack Study ****
# Copyright 2011 OpenStack Foundation # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. import webob.exc from glance.common import exception import glance.openstack.common.log as logging import glance.registry.client.v1.api as registry import glance.store as store LOG = logging.getLogger(__name__)
**** CubicPower OpenStack Study **** class BaseController(object):
**** CubicPower OpenStack Study **** def get_image_meta_or_404(self, request, image_id): """ Grabs the image metadata for an image with a supplied identifier or raises an HTTPNotFound (404) response :param request: The WSGI/Webob Request object :param image_id: The opaque image identifier :raises HTTPNotFound if image does not exist """ context = request.context try: return registry.get_image_metadata(context, image_id) except exception.NotFound: msg = _("Image with identifier %s not found") % image_id LOG.debug(msg) raise webob.exc.HTTPNotFound( msg, request=request, content_type='text/plain') except exception.Forbidden: msg = _("Forbidden image access") LOG.debug(msg) raise webob.exc.HTTPForbidden(msg, request=request, content_type='text/plain')
**** CubicPower OpenStack Study **** def get_active_image_meta_or_404(self, request, image_id): """ Same as get_image_meta_or_404 except that it will raise a 404 if the image isn't 'active'. """ image = self.get_image_meta_or_404(request, image_id) if image['status'] != 'active': msg = _("Image %s is not active") % image_id LOG.debug(msg) raise webob.exc.HTTPNotFound( msg, request=request, content_type='text/plain') return image
**** CubicPower OpenStack Study **** def update_store_acls(self, req, image_id, location_uri, public=False): if location_uri: try: read_tenants = [] write_tenants = [] members = registry.get_image_members(req.context, image_id) if members: for member in members: if member['can_share']: write_tenants.append(member['member_id']) else: read_tenants.append(member['member_id']) store.set_acls(req.context, location_uri, public=public, read_tenants=read_tenants, write_tenants=write_tenants) except exception.UnknownScheme: msg = _("Store for image_id not found: %s") % image_id raise webob.exc.HTTPBadRequest(explanation=msg, request=req, content_type='text/plain')
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