RETIRED, Function as a Service for OpenStack
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# Copyright 2017 Catalyst IT Limited
#
# 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.
class QinlingException(Exception):
"""Qinling specific exception.
Reserved for situations that are not critical for program continuation.
It is possible to recover from this type of problems automatically and
continue program execution. Such problems may be related with invalid user
input (such as invalid syntax) or temporary environmental problems.
In case if an instance of a certain exception type bubbles up to API layer
then this type of exception it must be associated with an http code so it's
clear how to represent it for a client.
To correctly use this class, inherit from it and define a 'message' and
'http_code' properties.
"""
message = "An unknown exception occurred"
http_code = 500
def __init__(self, message=None):
if message is not None:
self.message = message
super(QinlingException, self).__init__(
'%d: %s' % (self.http_code, self.message))
@property
def code(self):
"""This is here for webob to read.
https://github.com/Pylons/webob/blob/master/webob/exc.py
"""
return self.http_code
def __str__(self):
return self.message
class InputException(QinlingException):
http_code = 400
class UnauthorizedException(QinlingException):
http_code = 401
message = "Unauthorized"
class NotAllowedException(QinlingException):
http_code = 403
message = "Operation not allowed"