4fd1aab5b3
This part includes codes folder renaming. Co-Authored-By: Zhenguo Niu <Niu.ZGlinux@gmail.com> Change-Id: I919f17a769baee44ce19f65bab900f9d6bd8b982
71 lines
2.8 KiB
Python
71 lines
2.8 KiB
Python
# Copyright 2016 Huawei Technologies Co.,LTD.
|
|
# 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.
|
|
"""
|
|
Middleware to replace the plain text message body of an error
|
|
response with one formatted so the client can parse it.
|
|
|
|
Based on pecan.middleware.errordocument
|
|
"""
|
|
|
|
import json
|
|
import six
|
|
|
|
|
|
class ParsableErrorMiddleware(object):
|
|
"""Replace error body with something the client can parse."""
|
|
def __init__(self, app):
|
|
self.app = app
|
|
|
|
def __call__(self, environ, start_response):
|
|
# Request for this state, modified by replace_start_response()
|
|
# and used when an error is being reported.
|
|
state = {}
|
|
|
|
def replacement_start_response(status, headers, exc_info=None):
|
|
"""Overrides the default response to make errors parsable."""
|
|
try:
|
|
status_code = int(status.split(' ')[0])
|
|
state['status_code'] = status_code
|
|
except (ValueError, TypeError): # pragma: nocover
|
|
raise Exception(
|
|
'ErrorDocumentMiddleware received an invalid '
|
|
'status %s' % status)
|
|
else:
|
|
if (state['status_code'] // 100) not in (2, 3):
|
|
# Remove some headers so we can replace them later
|
|
# when we have the full error message and can
|
|
# compute the length.
|
|
headers = [(h, v)
|
|
for (h, v) in headers
|
|
if h not in ('Content-Length', 'Content-Type')
|
|
]
|
|
# Save the headers in case we need to modify them.
|
|
state['headers'] = headers
|
|
return start_response(status, headers, exc_info)
|
|
|
|
app_iter = self.app(environ, replacement_start_response)
|
|
|
|
if (state['status_code'] // 100) not in (2, 3):
|
|
if six.PY3:
|
|
app_iter = [i.decode('utf-8') for i in app_iter]
|
|
body = [json.dumps({'error_message': '\n'.join(app_iter)})]
|
|
if six.PY3:
|
|
body = [item.encode('utf-8') for item in body]
|
|
state['headers'].append(('Content-Type', 'application/json'))
|
|
state['headers'].append(('Content-Length', str(len(body[0]))))
|
|
else:
|
|
body = app_iter
|
|
return body
|