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