a5bdd9c516
To not deserialize over-sized requests with content body, we also need transport-specific size restrictions. They are come before input validation, and are also configurable. Change-Id: I06434431b3df9250c05472b4d91a53dfedb682d2
99 lines
3.6 KiB
Python
99 lines
3.6 KiB
Python
# Copyright (c) 2013 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import falcon
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from marconi.common import config
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import marconi.openstack.common.log as logging
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from marconi.storage import exceptions as storage_exceptions
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from marconi.transport import helpers
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from marconi.transport.wsgi import exceptions as wsgi_exceptions
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LOG = logging.getLogger(__name__)
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CFG = config.namespace('drivers:transport:wsgi').from_options(
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metadata_max_length=64 * 1024
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)
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class Resource(object):
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__slots__ = ('queue_ctrl', )
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def __init__(self, queue_controller):
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self.queue_ctrl = queue_controller
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def on_get(self, req, resp, project_id, queue_name):
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LOG.debug(_("Queue metadata GET - queue: %(queue)s, "
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"project: %(project)s") %
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{"queue": queue_name, "project": project_id})
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try:
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resp_dict = self.queue_ctrl.get_metadata(queue_name,
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project=project_id)
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except storage_exceptions.DoesNotExist:
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raise falcon.HTTPNotFound()
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except Exception as ex:
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LOG.exception(ex)
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description = _('Queue metadata could not be retrieved.')
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raise wsgi_exceptions.HTTPServiceUnavailable(description)
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resp.content_location = req.path
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resp.body = helpers.to_json(resp_dict)
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resp.status = falcon.HTTP_200
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def on_put(self, req, resp, project_id, queue_name):
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LOG.debug(_("Queue metadata PUT - queue: %(queue)s, "
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"project: %(project)s") %
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{"queue": queue_name, "project": project_id})
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# Place JSON size restriction before parsing
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if req.content_length > CFG.metadata_max_length:
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description = _('Queue metadata size is too large.')
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raise wsgi_exceptions.HTTPBadRequestBody(description)
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# Deserialize queue metadata
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try:
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metadata = helpers.read_json(req.stream, req.content_length)
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except helpers.MalformedJSON:
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description = _('Request body could not be parsed.')
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raise wsgi_exceptions.HTTPBadRequestBody(description)
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except Exception as ex:
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LOG.exception(ex)
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description = _('Request body could not be read.')
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raise wsgi_exceptions.HTTPServiceUnavailable(description)
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# Metadata must be a JSON object
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if not isinstance(metadata, dict):
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description = _('Queue metadata must be an object.')
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raise wsgi_exceptions.HTTPBadRequestBody(description)
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try:
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self.queue_ctrl.set_metadata(queue_name,
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metadata=metadata,
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project=project_id)
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except storage_exceptions.QueueDoesNotExist:
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raise falcon.HTTPNotFound()
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except Exception as ex:
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LOG.exception(ex)
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description = _('Metadata could not be updated.')
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raise wsgi_exceptions.HTTPServiceUnavailable(description)
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resp.status = falcon.HTTP_204
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resp.location = req.path
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