78 lines
2.3 KiB
Python
78 lines
2.3 KiB
Python
# Copyright (c) 2013 Red Hat, 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 jsonschema
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from jsonschema import validators
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from marconiclient import errors
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class Api(object):
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schema = {}
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label = None
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validators = {}
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def get_schema(self, operation):
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"""Returns the schema for an operation
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:param operation: Operation for which params need
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to be validated.
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:type operation: `six.text_type`
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:returns: Operation's schema
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:rtype: dict
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:raises: `errors.InvalidOperation` if the operation
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does not exist
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"""
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try:
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return self.schema[operation]
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except KeyError:
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# TODO(flaper87): gettext support
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msg = '{0} is not a valid operation'.format(operation)
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raise errors.InvalidOperation(msg)
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def validate(self, operation, params):
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"""Validates the request data
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This method relies on jsonschema and exists
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just as a way for third-party transport to validate
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the request. It's not recommended to validate every
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request since they are already validated server side.
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:param operation: Operation's for which params need
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to be validated.
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:type operation: `six.text_type`
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:param params: Params to validate
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:type params: dict
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:returns: True if the schema is valid, False otherwise
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:raises: `errors.InvalidOperation` if the operation
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does not exist
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"""
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if operation not in self.validators:
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schema = self.get_schema(operation)
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self.validators[operation] = validators.Draft4Validator(schema)
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try:
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self.validators[operation].validate(params)
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except jsonschema.ValidationError:
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# TODO(flaper87): Log error
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return False
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return True
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