glance/glance/api/middleware/cache_manage.py

85 lines
3.0 KiB
Python

# 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.
"""
Image Cache Management API
"""
from oslo_log import log as logging
import routes
from glance.api import cached_images
from glance.common import wsgi
from glance.i18n import _LI
LOG = logging.getLogger(__name__)
class CacheManageFilter(wsgi.Middleware):
def __init__(self, app):
mapper = routes.Mapper()
resource = cached_images.create_resource()
mapper.connect("/v1/cached_images",
controller=resource,
action="get_cached_images",
conditions=dict(method=["GET"]))
mapper.connect("/v1/cached_images/{image_id}",
controller=resource,
action="delete_cached_image",
conditions=dict(method=["DELETE"]))
mapper.connect("/v1/cached_images",
controller=resource,
action="delete_cached_images",
conditions=dict(method=["DELETE"]))
mapper.connect("/v1/queued_images/{image_id}",
controller=resource,
action="queue_image",
conditions=dict(method=["PUT"]))
mapper.connect("/v1/queued_images",
controller=resource,
action="get_queued_images",
conditions=dict(method=["GET"]))
mapper.connect("/v1/queued_images/{image_id}",
controller=resource,
action="delete_queued_image",
conditions=dict(method=["DELETE"]))
mapper.connect("/v1/queued_images",
controller=resource,
action="delete_queued_images",
conditions=dict(method=["DELETE"]))
self._mapper = mapper
self._resource = resource
LOG.info(_LI("Initialized image cache management middleware"))
super(CacheManageFilter, self).__init__(app)
def process_request(self, request):
# Map request to our resource object if we can handle it
match = self._mapper.match(request.path_info, request.environ)
if match:
request.environ['wsgiorg.routing_args'] = (None, match)
return self._resource(request)
# Pass off downstream if we don't match the request path
else:
return None