87 lines
2.5 KiB
Python
87 lines
2.5 KiB
Python
# Copyright 2017 Wind River
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import webob.dec
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import webob.exc
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_service.wsgi import Request
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from oslo_utils._i18n import _
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from routes.middleware import RoutesMiddleware
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from dcorch.api.proxy.common import constants
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from dcorch.api.proxy.common.service import Middleware
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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class Router(Middleware):
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"""WSGI middleware that maps incoming requests to WSGI apps.
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"""
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def __init__(self, app, conf, mapper, forwarder):
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"""Create a router for the given routes.Mapper.
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"""
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self.map = mapper
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self.forwarder = forwarder
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self._router = RoutesMiddleware(self._dispatch, self.map)
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super(Router, self).__init__(app)
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@webob.dec.wsgify(RequestClass=Request)
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def __call__(self, req):
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"""Route the incoming request to a controller based on self.map.
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"""
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return self._router
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@webob.dec.wsgify
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def _dispatch(self, req):
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"""Called by self._router after matching the incoming request to a
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route and putting the information into req.environ.
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"""
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match = req.environ['wsgiorg.routing_args'][1]
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if not match:
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if self.forwarder:
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return self.forwarder
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msg = _('The request is not allowed in System Controller')
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raise webob.exc.HTTPForbidden(explanation=msg)
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LOG.debug("Found match action!")
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app = match['controller']
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return app
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@staticmethod
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def _add_resource(mapper, controller, paths, tag, endpoint_type,
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action=None, method=None):
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if action is None:
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action = tag
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if method is None:
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method = constants.ROUTE_METHOD_MAP[endpoint_type].get(tag)
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for path in paths:
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mapper.connect(path, controller=controller, action=action,
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conditions=dict(method=method))
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