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# -*- coding: utf-8 -*-
# Copyright 2014-2016 OpenMarket Ltd
# Copyright 2018 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 twisted.internet.defer import CancelledError
from twisted.python import failure
from synapse.api.errors import SynapseError
class RequestTimedOutError(SynapseError):
"""Exception representing timeout of an outbound request"""
def __init__(self):
super(RequestTimedOutError, self).__init__(504, "Timed out")
def cancelled_to_request_timed_out_error(value):
"""Turns CancelledErrors into RequestTimedOutErrors.
For use with async.add_timeout_to_deferred
"""
if isinstance(value, failure.Failure):
value.trap(CancelledError)
raise RequestTimedOutError()
return value
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