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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# 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 oslo.config import cfg
import webob.dec
import webob.exc
from nova import context
from nova import utils
CONF = cfg.CONF
class Fault(webob.exc.HTTPException):
"""Captures exception and return REST Response."""
def __init__(self, exception):
"""Create a response for the given webob.exc.exception."""
self.wrapped_exc = exception
@webob.dec.wsgify
def __call__(self, req):
"""Generate a WSGI response based on the exception passed to ctor."""
code = self.wrapped_exc.status_int
message = self.wrapped_exc.explanation
if code == 501:
message = "The requested function is not supported"
code = str(code)
if 'AWSAccessKeyId' not in req.params:
raise webob.exc.HTTPBadRequest()
user_id, _sep, project_id = req.params['AWSAccessKeyId'].partition(':')
project_id = project_id or user_id
remote_address = getattr(req, 'remote_address', '127.0.0.1')
if CONF.use_forwarded_for:
remote_address = req.headers.get('X-Forwarded-For', remote_address)
ctxt = context.RequestContext(user_id,
project_id,
remote_address=remote_address)
resp = webob.Response()
resp.status = self.wrapped_exc.status_int
resp.headers['Content-Type'] = 'text/xml'
resp.body = str('<?xml version="1.0"?>\n'
'<Response><Errors><Error><Code>%s</Code>'
'<Message>%s</Message></Error></Errors>'
'<RequestID>%s</RequestID></Response>' %
(utils.xhtml_escape(utils.utf8(code)),
utils.xhtml_escape(utils.utf8(message)),
utils.xhtml_escape(utils.utf8(ctxt.request_id))))
return resp
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