pythonでリトライサンプル
サンプルコード：
import time
import logging
import socket
from functools import wraps
logging.basicConfig(level=logging.DEBUG)
def retry(MyException, tries=4, delay=3, backoff=2, logger=None):
def deco_retry(f):
@wraps(f)
def f_retry(*args, **kwargs):
mtries, mdelay = tries, delay
while mtries > 1:
try:
return f(*args, **kwargs)
except MyException as ex:
msg = “%s, Retrying in %d seconds…" % (str(ex), mdelay)
if logger:
logger.warning(msg)
else:
print msg
time.sleep(mdelay)
mtries -= 1
mdelay *= backoff
return str(ex)
return f_retry
return deco_retry
@retry(Exception, logger=logging)
def check():
sk = socket.socket()
sk.settimeout(5)
sk.connect(('6.6.6.6’, 80))
if __name__ == “__main__":
check()
実行結果：
WARNING:root:timed out, Retrying in 3 seconds…
WARNING:root:timed out, Retrying in 6 seconds…
WARNING:root:timed out, Retrying in 12 seconds…