263 lines
7.9 KiB
Python
263 lines
7.9 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2012 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import six
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from keystone.common import config
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from keystone.openstack.common import log
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from keystone.openstack.common import strutils
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CONF = config.CONF
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LOG = log.getLogger(__name__)
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# Tests use this to make exception message format errors fatal
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_FATAL_EXCEPTION_FORMAT_ERRORS = False
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class Error(StandardError):
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"""Base error class.
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Child classes should define an HTTP status code, title, and a
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message_format.
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"""
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code = None
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title = None
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message_format = None
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def __init__(self, message=None, **kwargs):
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try:
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message = self._build_message(message, **kwargs)
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except KeyError:
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# if you see this warning in your logs, please raise a bug report
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if _FATAL_EXCEPTION_FORMAT_ERRORS:
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raise
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else:
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LOG.warning(_('missing exception kwargs (programmer error)'))
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message = self.message_format
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super(Error, self).__init__(message)
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def _build_message(self, message, **kwargs):
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"""Builds and returns an exception message.
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:raises: KeyError given insufficient kwargs
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"""
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if not message:
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try:
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message = self.message_format % kwargs
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except UnicodeDecodeError:
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try:
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kwargs = dict([(k, strutils.safe_decode(v)) for k, v in
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six.iteritems(kwargs)])
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except UnicodeDecodeError:
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# NOTE(jamielennox): This is the complete failure case
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# at least by showing the template we have some idea
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# of where the error is coming from
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message = self.message_format
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else:
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message = self.message_format % kwargs
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return message
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class ValidationError(Error):
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message_format = _("Expecting to find %(attribute)s in %(target)s."
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" The server could not comply with the request"
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" since it is either malformed or otherwise"
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" incorrect. The client is assumed to be in error.")
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code = 400
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title = 'Bad Request'
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class ValidationTimeStampError(Error):
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message_format = _("Timestamp not in expected format."
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" The server could not comply with the request"
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" since it is either malformed or otherwise"
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" incorrect. The client is assumed to be in error.")
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code = 400
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title = 'Bad Request'
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class StringLengthExceeded(ValidationError):
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message_format = _("String length exceeded.The length of"
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" string '%(string)s' exceeded the limit"
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" of column %(type)s(CHAR(%(length)d)).")
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class ValidationSizeError(Error):
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message_format = _("Request attribute %(attribute)s must be"
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" less than or equal to %(size)i. The server"
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" could not comply with the request because"
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" the attribute size is invalid (too large)."
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" The client is assumed to be in error.")
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code = 400
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title = 'Bad Request'
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class SecurityError(Error):
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"""Avoids exposing details of security failures, unless in debug mode."""
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def _build_message(self, message, **kwargs):
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"""Only returns detailed messages in debug mode."""
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if CONF.debug:
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return message or self.message_format % kwargs
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else:
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return self.message_format % kwargs
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class Unauthorized(SecurityError):
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message_format = _("The request you have made requires authentication.")
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code = 401
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title = 'Unauthorized'
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class AuthPluginException(Unauthorized):
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message_format = _("Authentication plugin error.")
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def __init__(self, *args, **kwargs):
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super(AuthPluginException, self).__init__(*args, **kwargs)
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self.authentication = {}
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class AuthMethodNotSupported(AuthPluginException):
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message_format = _("Attempted to authenticate with an unsupported method.")
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def __init__(self, *args, **kwargs):
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super(AuthMethodNotSupported, self).__init__(*args, **kwargs)
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self.authentication = {'methods': CONF.auth.methods}
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class AdditionalAuthRequired(AuthPluginException):
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message_format = _("Additional authentications steps required.")
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def __init__(self, auth_response=None, **kwargs):
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super(AdditionalAuthRequired, self).__init__(message=None, **kwargs)
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self.authentication = auth_response
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class Forbidden(SecurityError):
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message_format = _("You are not authorized to perform the"
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" requested action.")
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code = 403
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title = 'Forbidden'
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class ForbiddenAction(Forbidden):
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message_format = _("You are not authorized to perform the"
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" requested action, %(action)s.")
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class NotFound(Error):
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message_format = _("Could not find, %(target)s.")
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code = 404
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title = 'Not Found'
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class EndpointNotFound(NotFound):
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message_format = _("Could not find endpoint, %(endpoint_id)s.")
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class MetadataNotFound(NotFound):
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"""(dolph): metadata is not a user-facing concept,
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so this exception should not be exposed
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"""
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message_format = _("An unhandled exception has occurred:"
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" Could not find metadata.")
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class PolicyNotFound(NotFound):
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message_format = _("Could not find policy, %(policy_id)s.")
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class RoleNotFound(NotFound):
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message_format = _("Could not find role, %(role_id)s.")
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class ServiceNotFound(NotFound):
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message_format = _("Could not find service, %(service_id)s.")
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class DomainNotFound(NotFound):
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message_format = _("Could not find domain, %(domain_id)s.")
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class ProjectNotFound(NotFound):
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message_format = _("Could not find project, %(project_id)s.")
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class TokenNotFound(NotFound):
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message_format = _("Could not find token, %(token_id)s.")
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class UserNotFound(NotFound):
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message_format = _("Could not find user, %(user_id)s.")
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class GroupNotFound(NotFound):
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message_format = _("Could not find group, %(group_id)s.")
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class TrustNotFound(NotFound):
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message_format = _("Could not find trust, %(trust_id)s.")
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class CredentialNotFound(NotFound):
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message_format = _("Could not find credential, %(credential_id)s.")
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class VersionNotFound(NotFound):
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message_format = _("Could not find version, %(version)s.")
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class Conflict(Error):
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message_format = _("Conflict occurred attempting to store %(type)s."
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" %(details)s")
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code = 409
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title = 'Conflict'
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class RequestTooLarge(Error):
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message_format = _("Request is too large.")
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code = 413
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title = 'Request is too large.'
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class UnexpectedError(Error):
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message_format = _("An unexpected error prevented the server"
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" from fulfilling your request. %(exception)s")
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code = 500
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title = 'Internal Server Error'
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class MalformedEndpoint(UnexpectedError):
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message_format = _("Malformed endpoint URL (%(endpoint)s),"
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" see ERROR log for details.")
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class NotImplemented(Error):
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message_format = _("The action you have requested has not"
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" been implemented.")
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code = 501
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title = 'Not Implemented'
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class ConfigFileNotFound(UnexpectedError):
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message_format = _("The Keystone configuration file %(config_file)s could "
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"not be found.")
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