d92c226fe2
Recreate a very simple eventlet utility module that has only a few features; one function checks if eventlet is available and if not raise an exception; and a constant that can be used by calling code (such as tests or other optional functionality) to check if eventlet is useable before proceeding. Change-Id: I32df0702eeae7c7c78972c9796156dd824b2f123
35 lines
1.1 KiB
Python
35 lines
1.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
# Copyright (C) 2015 Yahoo! Inc. All Rights Reserved.
|
|
#
|
|
# 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.
|
|
|
|
try:
|
|
import eventlet as _eventlet # noqa
|
|
EVENTLET_AVAILABLE = True
|
|
except ImportError:
|
|
EVENTLET_AVAILABLE = False
|
|
|
|
|
|
def check_for_eventlet(exc=None):
|
|
"""Check if eventlet is available and if not raise a runtime error.
|
|
|
|
:param exc: exception to raise instead of raising a runtime error
|
|
:type exc: exception
|
|
"""
|
|
if not EVENTLET_AVAILABLE:
|
|
if exc is None:
|
|
raise RuntimeError('Eventlet is not current available')
|
|
else:
|
|
raise exc
|