1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 OpenStack LLC
#
# 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.
import re
from keystone.common import logging
from keystone import config
CONF = config.CONF
LOG = logging.getLogger(__name__)
# Tests use this to make exception message format errors fatal
_FATAL_EXCEPTION_FORMAT_ERRORS = False
class Error(StandardError):
"""Base error class.
Child classes should define an HTTP status code, title, and a doc string.
"""
code = None
title = None
def __init__(self, message=None, **kwargs):
"""Use the doc string as the error message by default."""
try:
message = self._build_message(message, **kwargs)
except KeyError as e:
# if you see this warning in your logs, please raise a bug report
if _FATAL_EXCEPTION_FORMAT_ERRORS:
raise e
else:
LOG.warning('missing exception kwargs (programmer error)')
message = self.__doc__
super(Error, self).__init__(message)
def _build_message(self, message, **kwargs):
"""Builds and returns an exception message.
:raises: KeyError given insufficient kwargs
"""
return message or self.__doc__ % kwargs
def __str__(self):
"""Cleans up line breaks and indentation from doc strings."""
string = super(Error, self).__str__()
string = re.sub('[ \n]+', ' ', string)
string = string.strip()
return string
class ValidationError(Error):
"""Expecting to find %(attribute)s in %(target)s.
The server could not comply with the request since it is either malformed
or otherwise incorrect.
The client is assumed to be in error.
"""
code = 400
title = 'Bad Request'
class StringLengthExceeded(ValidationError):
"""The length of string "%(string)s" exceeded the limit of column
%(type)s(CHAR(%(length)d))."""
class ValidationSizeError(Error):
"""Request attribute %(attribute)s must be less than or equal to %(size)i.
The server could not comply with the request because the attribute
size is invalid (too large).
The client is assumed to be in error.
"""
code = 400
title = 'Bad Request'
class SecurityError(Error):
"""Avoids exposing details of security failures, unless in debug mode."""
def _build_message(self, message, **kwargs):
"""Only returns detailed messages in debug mode."""
if CONF.debug:
return message or self.__doc__ % kwargs
else:
return self.__doc__ % kwargs
class Unauthorized(SecurityError):
"""The request you have made requires authentication."""
code = 401
title = 'Not Authorized'
class AuthPluginException(Unauthorized):
""" Authentication plugin error. """
authentication = {}
class AuthMethodNotSupported(AuthPluginException):
""" Attempted to authenticate with an unsupported method. """
authentication = {'methods': CONF.auth.methods}
class AdditionalAuthRequired(AuthPluginException):
""" Additional authentications steps required. """
def __init__(self, auth_response=None, **kwargs):
super(AdditionalAuthRequired, self).__init__(message=None, **kwargs)
self.authentication = auth_response
class Forbidden(SecurityError):
"""You are not authorized to perform the requested action."""
code = 403
title = 'Not Authorized'
class ForbiddenAction(Forbidden):
"""You are not authorized to perform the requested action: %(action)s"""
class NotFound(Error):
"""Could not find: %(target)s"""
code = 404
title = 'Not Found'
class EndpointNotFound(NotFound):
"""Could not find endpoint: %(endpoint_id)s"""
class MetadataNotFound(NotFound):
"""An unhandled exception has occurred: Could not find metadata."""
# (dolph): metadata is not a user-facing concept,
# so this exception should not be exposed
class PolicyNotFound(NotFound):
"""Could not find policy: %(policy_id)s"""
class RoleNotFound(NotFound):
"""Could not find role: %(role_id)s"""
class ServiceNotFound(NotFound):
"""Could not find service: %(service_id)s"""
class DomainNotFound(NotFound):
"""Could not find domain: %(domain_id)s"""
class ProjectNotFound(NotFound):
"""Could not find project: %(project_id)s"""
class TokenNotFound(NotFound):
"""Could not find token: %(token_id)s"""
class UserNotFound(NotFound):
"""Could not find user: %(user_id)s"""
class GroupNotFound(NotFound):
"""Could not find group: %(group_id)s"""
class TrustNotFound(NotFound):
"""Could not find trust: %(trust_id)s"""
class Conflict(Error):
"""Conflict occurred attempting to store %(type)s.
%(details)s
"""
code = 409
title = 'Conflict'
class RequestTooLarge(Error):
"""Request is too large."""
code = 413
title = 'Request is too large.'
class UnexpectedError(Error):
"""An unexpected error prevented the server from fulfilling your request.
%(exception)s
"""
code = 500
title = 'Internal Server Error'
class MalformedEndpoint(UnexpectedError):
"""Malformed endpoint URL (see ERROR log for details): %(endpoint)s"""
class NotImplemented(Error):
"""The action you have requested has not been implemented."""
code = 501
title = 'Not Implemented'
|
