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