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Drop custom implementation of EVENTLET_HUB

Eventlet uses monotonic clocks by default since 0.21, hence no need
to patch that anymore.

Closes-Bug: #1906262
Co-Authored-By: Dimitri John Ledkov <>
Co-Authored-By: Michael Hudson-Doyle <>
Change-Id: I72106068d99cc174412aa3026082ec63f1d895fe
Corey Bryant 7 months ago
1 changed files with 0 additions and 33 deletions
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# 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
# 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.
import os
import eventlet.patcher
time = eventlet.patcher.original('time')
def service_hub():
# NOTE(dims): Add a custom impl for EVENTLET_HUB, so we can
# override the clock used in the eventlet hubs. The default
# uses time.time() and we need to use a monotonic timer
# to ensure that things like loopingcall work properly.
hub = eventlet.hubs.get_default_hub().Hub()
hub.clock = time.monotonic
# get_default_hub() will return a hub that is supported on this platform
hub.is_available = lambda: True
return hub
os.environ['EVENTLET_HUB'] = 'oslo_service:service_hub'