deckhand/deckhand/control/middleware.py

41 lines
1.3 KiB
Python

# Copyright 2017 AT&T Intellectual Property. All other 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 re
import falcon
class ContextMiddleware(object):
def __init__(self, routing_map):
self.routing_map = routing_map
def process_request(self, req, resp):
# Determine whether the method is allowed.
req_method = req.method
req_uri = req.uri
found = False
for route_pattern, allowed_methods in self.routing_map.items():
if re.match(route_pattern, req_uri):
if req_method not in allowed_methods:
raise falcon.HTTPMethodNotAllowed(allowed_methods)
else:
found = True
break
if not found:
raise falcon.HTTPMethodNotAllowed([])