0e313c8fd7
... and coding header which is no longer required in Pythhon 3. Change-Id: Ib72a25f2946c568f4a0ee2469d9e146abc1670e9
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
# 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.
|
|
|
|
import time
|
|
|
|
|
|
def retry(count=1, delay=0, retry_on=Exception):
|
|
"""
|
|
Decorator which tries to run specified fuction if the previous
|
|
run ended by given exception. Retry count and delays can be also
|
|
specified.
|
|
"""
|
|
if count < 0 or delay < 0:
|
|
raise ValueError('Count and delay has to be positive number.')
|
|
|
|
def decorator(func):
|
|
def wrapper(*args, **kwargs):
|
|
tried = 0
|
|
while tried <= count:
|
|
try:
|
|
return func(*args, **kwargs)
|
|
except retry_on:
|
|
if tried >= count:
|
|
raise
|
|
if delay:
|
|
time.sleep(delay)
|
|
tried += 1
|
|
wrapper.__name__ = func.__name__
|
|
return wrapper
|
|
return decorator
|