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# Copyright 2017 New Vector Ltd
#
# 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 typing import TYPE_CHECKING
from twisted.web.server import Request
from synapse.http.server import DirectServeJsonResource
if TYPE_CHECKING:
from synapse.server import HomeServer
class AdditionalResource(DirectServeJsonResource):
"""Resource wrapper for additional_resources
If the user has configured additional_resources, we need to wrap the
handler class with a Resource so that we can map it into the resource tree.
This class is also where we wrap the request handler with logging, metrics,
and exception handling.
"""
def __init__(self, hs: "HomeServer", handler):
"""Initialise AdditionalResource
The ``handler`` should return a deferred which completes when it has
done handling the request. It should write a response with
``request.write()``, and call ``request.finish()``.
Args:
hs: homeserver
handler ((twisted.web.server.Request) -> twisted.internet.defer.Deferred):
function to be called to handle the request.
"""
super().__init__()
self._handler = handler
def _async_render(self, request: Request):
# Cheekily pass the result straight through, so we don't need to worry
# if its an awaitable or not.
return self._handler(request)
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