61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
# Copyright (c) 2013 Rackspace Hosting, 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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"""utils: a set of utilities to help with transport handling details."""
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import jsonschema
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from zaqar.openstack.common import log
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from zaqar.queues.transport import utils as json_utils
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from zaqar.queues.transport.wsgi import errors as wsgi_errors
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LOG = log.getLogger(__name__)
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def load(req):
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"""Reads request body, raising an exception if it is not JSON.
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:param req: The request object to read from
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:type req: falcon.Request
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:return: a dictionary decoded from the JSON stream
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:rtype: dict
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:raises: wsgi_errors.HTTPBadRequestBody
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"""
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try:
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return json_utils.read_json(req.stream, req.content_length)
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except (json_utils.MalformedJSON, json_utils.OverflowedJSONInteger) as ex:
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LOG.exception(ex)
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raise wsgi_errors.HTTPBadRequestBody(
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'JSON could not be parsed.'
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)
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# TODO(cpp-cabrera): generalize this
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def validate(validator, document):
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"""Verifies a document against a schema.
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:param validator: a validator to use to check validity
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:type validator: jsonschema.Draft4Validator
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:param document: document to check
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:type document: dict
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:raises: wsgi_errors.HTTPBadRequestBody
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"""
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try:
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validator.validate(document)
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except jsonschema.ValidationError as ex:
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raise wsgi_errors.HTTPBadRequestBody(
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'{0}: {1}'.format(ex.args, ex.message)
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)
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