Load Balancing as a Service (LBaaS) for OpenStack
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octavia/octavia/amphorae/drivers/haproxy/exceptions.py

90 lines
2.3 KiB

# Copyright 2014 Rackspace
# 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.
from webob import exc
from oslo_log import log as logging
LOG = logging.getLogger(__name__)
def check_exception(response, ignore=tuple(), log_error=True):
status_code = response.status_code
responses = {
400: InvalidRequest,
401: Unauthorized,
403: Forbidden,
404: NotFound,
405: InvalidRequest,
409: Conflict,
500: InternalServerError,
503: ServiceUnavailable
}
if (status_code not in ignore) and (status_code in responses):
try:
if log_error:
LOG.error('Amphora agent returned unexpected result code %s '
'with response %s', status_code, response.json())
except Exception:
# Handle the odd case where there is no response body
# like when using requests_mock which doesn't support has_body
pass
raise responses[status_code]()
return response
class APIException(exc.HTTPClientError):
msg = "Something unknown went wrong"
code = 500
def __init__(self, **kwargs):
self.msg = self.msg % kwargs
super(APIException, self).__init__(detail=self.msg)
class InvalidRequest(APIException):
msg = "Invalid request"
code = 400
class Unauthorized(APIException):
msg = "Unauthorized"
code = 401
class Forbidden(APIException):
msg = "Forbidden"
code = 403
class NotFound(APIException):
msg = "Not Found"
code = 404
class Conflict(APIException):
msg = "Conflict"
code = 409
class InternalServerError(APIException):
msg = "Internal Server Error"
code = 500
class ServiceUnavailable(APIException):
msg = "Service Unavailable"
code = 503