090e5ffc69
SessionClient uses requests library. It's response class doesn't have
"status" property[1], so in case of any errors(with status code > 400),
from_response method is called and raises AttributeError.
Also, HTTPClient implementation uses requests lib by default[2](if 'http'
argument was not transmitted), so from_response method will raise
AttributeError too.
[1] - http://docs.python-requests.org/en/master/api/#requests.Response.status_code
[2] - https://github.com/openstack/python-ceilometerclient/blob/2.6.0/ceilometerclient/openstack/common/apiclient/client.py#L99-L100
Change-Id: Id8fb2f386e8101951716f30a6365c9aa15bd4b24
Closes-Bug: #1620974
(cherry picked from commit 1b1917ab9b)
134 lines
3.4 KiB
Python
134 lines
3.4 KiB
Python
# 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 json
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import sys
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class BaseException(Exception):
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"""An error occurred."""
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def __init__(self, message=None):
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self.message = message
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def __str__(self):
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return self.message or self.__class__.__doc__
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class CommandError(BaseException):
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"""Invalid usage of CLI."""
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class InvalidEndpoint(BaseException):
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"""The provided endpoint is invalid."""
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class CommunicationError(BaseException):
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"""Unable to communicate with server."""
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class HTTPException(BaseException):
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"""Base exception for all HTTP-derived exceptions."""
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code = 'N/A'
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def __init__(self, details=None):
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self.details = details
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def __str__(self):
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try:
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data = json.loads(self.details)
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message = data.get("error_message", {}).get("faultstring")
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if message:
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return "%s (HTTP %s) ERROR %s" % (
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self.__class__.__name__, self.code, message)
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except (ValueError, TypeError, AttributeError):
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pass
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return "%s (HTTP %s)" % (self.__class__.__name__, self.code)
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class HTTPMultipleChoices(HTTPException):
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code = 300
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def __str__(self):
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self.details = ("Requested version of OpenStack Images API is not"
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"available.")
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return "%s (HTTP %s) %s" % (self.__class__.__name__, self.code,
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self.details)
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class HTTPBadRequest(HTTPException):
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code = 400
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class HTTPUnauthorized(HTTPException):
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code = 401
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class HTTPForbidden(HTTPException):
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code = 403
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class HTTPNotFound(HTTPException):
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code = 404
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class HTTPMethodNotAllowed(HTTPException):
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code = 405
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class HTTPConflict(HTTPException):
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code = 409
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class HTTPOverLimit(HTTPException):
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code = 413
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class HTTPInternalServerError(HTTPException):
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code = 500
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class HTTPNotImplemented(HTTPException):
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code = 501
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class HTTPBadGateway(HTTPException):
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code = 502
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class HTTPServiceUnavailable(HTTPException):
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code = 503
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# NOTE(bcwaldon): Build a mapping of HTTP codes to corresponding exception
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# classes
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_code_map = {}
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for obj_name in dir(sys.modules[__name__]):
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if obj_name.startswith('HTTP'):
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obj = getattr(sys.modules[__name__], obj_name)
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_code_map[obj.code] = obj
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def from_response(response, details=None):
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"""Return an instance of an HTTPException based on http response."""
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if hasattr(response, "status"):
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# it is response from HTTPClient (httplib)
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code = response.status
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elif hasattr(response, "status_code"):
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# it is response from SessionClient (requests)
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code = response.status_code
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else:
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# it is something unexpected
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raise TypeError("Function 'from_response' expects only response object"
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" from httplib or requests libraries.")
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cls = _code_map.get(code, HTTPException)
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return cls(details)
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