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67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014, 2015 OpenMarket Ltd
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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 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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from synapse.util.logcontext import LoggingContext
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from twisted.internet import defer, reactor
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import time
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class Clock(object):
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"""A small utility that obtains current time-of-day so that time may be
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mocked during unit-tests.
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TODO(paul): Also move the sleep() functionallity into it
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"""
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def time(self):
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"""Returns the current system time in seconds since epoch."""
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return time.time()
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def time_msec(self):
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"""Returns the current system time in miliseconds since epoch."""
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return self.time() * 1000
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def call_later(self, delay, callback):
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current_context = LoggingContext.current_context()
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def wrapped_callback():
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LoggingContext.thread_local.current_context = current_context
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callback()
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return reactor.callLater(delay, wrapped_callback)
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def cancel_call_later(self, timer):
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timer.cancel()
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def time_bound_deferred(self, given_deferred, time_out):
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ret_deferred = defer.Deferred()
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def timed_out():
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if not given_deferred.called:
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given_deferred.cancel()
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ret_deferred.errback(RuntimeError("Timed out"))
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timer = self.call_later(time_out, timed_out)
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def succeed(result):
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self.cancel_call_later(timer)
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ret_deferred.callback(result)
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given_deferred.addCallback(succeed)
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given_deferred.addErrback(ret_deferred.errback)
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return ret_deferred
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