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# Copyright 2012 OpenStack Foundation
# All Rights Reserved.
#
# 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
import sys
class BaseException(Exception):
"""An error occurred."""
def __init__(self, message=None):
self.message = message
def __str__(self):
return self.message or self.__class__.__doc__
class CommandError(BaseException):
"""Invalid usage of CLI."""
class InvalidEndpoint(BaseException):
"""The provided endpoint is invalid."""
class CommunicationError(BaseException):
"""Unable to communicate with server."""
class ClientException(Exception):
"""DEPRECATED!"""
class HTTPException(ClientException):
"""Base exception for all HTTP-derived exceptions."""
code = 'N/A'
def __init__(self, details=None):
self.details = details or self.__class__.__name__
def __str__(self):
return "%s (HTTP %s)" % (self.details, self.code)
class HTTPMultipleChoices(HTTPException):
code = 300
def __str__(self):
self.details = ("Requested version of OpenStack Images API is not "
"available.")
return "%s (HTTP %s) %s" % (self.__class__.__name__, self.code,
self.details)
class BadRequest(HTTPException):
"""DEPRECATED!"""
code = 400
class HTTPBadRequest(BadRequest):
pass
class Unauthorized(HTTPException):
"""DEPRECATED!"""
code = 401
class HTTPUnauthorized(Unauthorized):
pass
class Forbidden(HTTPException):
"""DEPRECATED!"""
code = 403
class HTTPForbidden(Forbidden):
pass
class NotFound(HTTPException):
"""DEPRECATED!"""
code = 404
class HTTPNotFound(NotFound):
pass
class HTTPMethodNotAllowed(HTTPException):
code = 405
class Conflict(HTTPException):
"""DEPRECATED!"""
code = 409
class HTTPConflict(Conflict):
pass
class OverLimit(HTTPException):
"""DEPRECATED!"""
code = 413
class HTTPOverLimit(OverLimit):
pass
class HTTPInternalServerError(HTTPException):
code = 500
class HTTPNotImplemented(HTTPException):
code = 501
class HTTPBadGateway(HTTPException):
code = 502
class ServiceUnavailable(HTTPException):
"""DEPRECATED!"""
code = 503
class HTTPServiceUnavailable(ServiceUnavailable):
pass
# NOTE(bcwaldon): Build a mapping of HTTP codes to corresponding exception
# classes
_code_map = {}
for obj_name in dir(sys.modules[__name__]):
if obj_name.startswith('HTTP'):
obj = getattr(sys.modules[__name__], obj_name)
_code_map[obj.code] = obj
def from_response(response, body=None):
"""Return an instance of an HTTPException based on httplib response."""
cls = _code_map.get(response.status_code, HTTPException)
if body and 'json' in response.headers['content-type']:
# Iterate over the nested objects and retreive the "message" attribute.
messages = [obj.get('message') for obj in response.json().values()]
# Join all of the messages together nicely and filter out any objects
# that don't have a "message" attr.
details = '\n'.join(i for i in messages if i is not None)
return cls(details=details)
elif body and 'html' in response.headers['content-type']:
# Split the lines, strip whitespace and inline HTML from the response.
details = [re.sub(r'<.+?>', '', i.strip())
for i in response.text.splitlines()]
details = [i for i in details if i]
# Remove duplicates from the list.
details_seen = set()
details_temp = []
for i in details:
if i not in details_seen:
details_temp.append(i)
details_seen.add(i)
# Return joined string separated by colons.
details = ': '.join(details_temp)
return cls(details=details)
elif body:
details = body.replace('\n\n', '\n')
return cls(details=details)
return cls()
class NoTokenLookupException(Exception):
"""DEPRECATED!"""
pass
class EndpointNotFound(Exception):
"""DEPRECATED!"""
pass
class SSLConfigurationError(BaseException):
pass
class SSLCertificateError(BaseException):
pass
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