OpenStack Networking (Neutron)
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2011 Citrix Systems.
# 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 webob.dec
import webob.exc
from quantum.api import api_common as common
from quantum.common import wsgi
class Fault(webob.exc.HTTPException):
"""Error codes for API faults"""
_fault_names = {
400: "malformedRequest",
401: "unauthorized",
420: "networkNotFound",
421: "networkInUse",
430: "portNotFound",
431: "requestedStateInvalid",
432: "portInUse",
440: "alreadyAttached",
470: "serviceUnavailable",
471: "pluginFault"
}
def __init__(self, exception):
"""Create a Fault for the given webob.exc.exception."""
self.wrapped_exc = exception
@webob.dec.wsgify(RequestClass=wsgi.Request)
def __call__(self, req):
"""Generate a WSGI response based on the exception passed to ctor."""
# Replace the body with fault details.
code = self.wrapped_exc.status_int
fault_name = self._fault_names.get(code, "quantumServiceFault")
fault_data = {
fault_name: {
'code': code,
'message': self.wrapped_exc.explanation,
'detail': self.wrapped_exc.detail}}
# 'code' is an attribute on the fault tag itself
metadata = {'application/xml': {'attributes': {fault_name: 'code'}}}
default_xmlns = common.XML_NS_V10
serializer = wsgi.Serializer(metadata, default_xmlns)
content_type = req.best_match_content_type()
self.wrapped_exc.body = serializer.serialize(fault_data, content_type)
self.wrapped_exc.content_type = content_type
return self.wrapped_exc
class NetworkNotFound(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server did not find the network specified
in the HTTP request
code: 420, title: Network not Found
"""
code = 420
title = 'Network not Found'
explanation = ('Unable to find a network with the specified identifier.')
class NetworkInUse(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server could not delete the network as there is
at least an attachment plugged into its ports
code: 421, title: Network In Use
"""
code = 421
title = 'Network in Use'
explanation = ('Unable to remove the network: attachments still plugged.')
class PortNotFound(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server did not find the port specified
in the HTTP request for a given network
code: 430, title: Port not Found
"""
code = 430
title = 'Port not Found'
explanation = ('Unable to find a port with the specified identifier.')
class RequestedStateInvalid(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server could not update the port state to
to the request value
code: 431, title: Requested State Invalid
"""
code = 431
title = 'Requested State Invalid'
explanation = ('Unable to update port state with specified value.')
class PortInUse(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server could not remove o port or attach
a resource to it because there is an attachment plugged into the port
code: 432, title: PortInUse
"""
code = 432
title = 'Port in Use'
explanation = ('A resource is currently attached to the logical port')
class AlreadyAttached(webob.exc.HTTPClientError):
"""
subclass of :class:`~HTTPClientError`
This indicates that the server refused an attempt to re-attach a resource
already attached to the network
code: 440, title: AlreadyAttached
"""
code = 440
title = 'Already Attached'
explanation = ('The resource is already attached to another port')