¡@
OpenStack Study: image_tags.py**** CubicPower OpenStack Study ****
# Copyright 2012 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.api import policy from glance.common import exception from glance.common import utils from glance.common import wsgi import glance.db import glance.gateway import glance.notifier import glance.store
**** CubicPower OpenStack Study **** class Controller(object):
**** CubicPower OpenStack Study **** def __init__(self, db_api=None, policy_enforcer=None, notifier=None, store_api=None): self.db_api = db_api or glance.db.get_api() self.policy = policy_enforcer or policy.Enforcer() self.notifier = notifier or glance.notifier.Notifier() self.store_api = store_api or glance.store self.gateway = glance.gateway.Gateway(self.db_api, self.store_api, self.notifier, self.policy) @utils.mutating
**** CubicPower OpenStack Study **** def update(self, req, image_id, tag_value): image_repo = self.gateway.get_repo(req.context) try: image = image_repo.get(image_id) image.tags.add(tag_value) image_repo.save(image) except exception.NotFound as e: raise webob.exc.HTTPNotFound(explanation=e.msg) except exception.Forbidden as e: raise webob.exc.HTTPForbidden(explanation=e.msg) except exception.ImageTagLimitExceeded as e: raise webob.exc.HTTPRequestEntityTooLarge(explanation=e.msg) @utils.mutating
**** CubicPower OpenStack Study **** def delete(self, req, image_id, tag_value): image_repo = self.gateway.get_repo(req.context) try: image = image_repo.get(image_id) if tag_value not in image.tags: raise webob.exc.HTTPNotFound() image.tags.remove(tag_value) image_repo.save(image) except exception.NotFound as e: raise webob.exc.HTTPNotFound(explanation=e.msg) except exception.Forbidden as e: raise webob.exc.HTTPForbidden(explanation=e.msg)
**** CubicPower OpenStack Study **** class ResponseSerializer(wsgi.JSONResponseSerializer):
**** CubicPower OpenStack Study **** def update(self, response, result): response.status_int = 204
**** CubicPower OpenStack Study **** def delete(self, response, result): response.status_int = 204 def create_resource(): """Images resource factory method""" serializer = ResponseSerializer() controller = Controller() return wsgi.Resource(controller, serializer=serializer)
**** CubicPower OpenStack Study **** def create_resource(): """Images resource factory method""" serializer = ResponseSerializer() controller = Controller() return wsgi.Resource(controller, serializer=serializer)
|