Python retry package - tenacity : How to log the root cause of exception?












1














As discussed in this question I am using tenacity to do retries.



A toy code looks like below



import logging
from tenacity import retry
import tenacity


@retry(wait=tenacity.wait_incrementing(start=10, increment=10, max=100), stop=tenacity.stop_after_attempt(3))
def print_msg():
logging.info('Hello')
logging.info("World")
raise Exception('Test error')


if __name__ == '__main__':
logging.basicConfig(
format='%(asctime)s,%(msecs)d %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%d-%m-%Y:%H:%M:%S',
level=logging.INFO)
logging.info('Starting')
print_msg()


The output looks like below



21-11-2018:12:40:48,586 INFO     [retrier.py:18] Starting
21-11-2018:12:40:48,586 INFO [retrier.py:8] Hello
21-11-2018:12:40:48,586 INFO [retrier.py:9] World
21-11-2018:12:40:58,592 INFO [retrier.py:8] Hello
21-11-2018:12:40:58,592 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 INFO [retrier.py:8] Hello
21-11-2018:12:41:18,596 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 ERROR [retrier.py:22] Received Exception
Traceback (most recent call last):
File "/Users/dmanna/PycharmProjects/demo/retrier.py", line 20, in <module>
print_msg()
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 292, in wrapped_f
return self.call(f, *args, **kw)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 358, in call
do = self.iter(retry_state=retry_state)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 332, in iter
six.raise_from(retry_exc, fut.exception())
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/six.py", line 737, in raise_from
raise value
RetryError: RetryError[<Future at 0x109fa6150 state=finished raised Exception>]


Can someone let me know how can I log the root cause of the exception?










share|improve this question






















  • you could see the whole exception chain under python3.
    – georgexsh
    Nov 21 '18 at 8:13
















1














As discussed in this question I am using tenacity to do retries.



A toy code looks like below



import logging
from tenacity import retry
import tenacity


@retry(wait=tenacity.wait_incrementing(start=10, increment=10, max=100), stop=tenacity.stop_after_attempt(3))
def print_msg():
logging.info('Hello')
logging.info("World")
raise Exception('Test error')


if __name__ == '__main__':
logging.basicConfig(
format='%(asctime)s,%(msecs)d %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%d-%m-%Y:%H:%M:%S',
level=logging.INFO)
logging.info('Starting')
print_msg()


The output looks like below



21-11-2018:12:40:48,586 INFO     [retrier.py:18] Starting
21-11-2018:12:40:48,586 INFO [retrier.py:8] Hello
21-11-2018:12:40:48,586 INFO [retrier.py:9] World
21-11-2018:12:40:58,592 INFO [retrier.py:8] Hello
21-11-2018:12:40:58,592 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 INFO [retrier.py:8] Hello
21-11-2018:12:41:18,596 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 ERROR [retrier.py:22] Received Exception
Traceback (most recent call last):
File "/Users/dmanna/PycharmProjects/demo/retrier.py", line 20, in <module>
print_msg()
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 292, in wrapped_f
return self.call(f, *args, **kw)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 358, in call
do = self.iter(retry_state=retry_state)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 332, in iter
six.raise_from(retry_exc, fut.exception())
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/six.py", line 737, in raise_from
raise value
RetryError: RetryError[<Future at 0x109fa6150 state=finished raised Exception>]


Can someone let me know how can I log the root cause of the exception?










share|improve this question






















  • you could see the whole exception chain under python3.
    – georgexsh
    Nov 21 '18 at 8:13














1












1








1







As discussed in this question I am using tenacity to do retries.



A toy code looks like below



import logging
from tenacity import retry
import tenacity


@retry(wait=tenacity.wait_incrementing(start=10, increment=10, max=100), stop=tenacity.stop_after_attempt(3))
def print_msg():
logging.info('Hello')
logging.info("World")
raise Exception('Test error')


if __name__ == '__main__':
logging.basicConfig(
format='%(asctime)s,%(msecs)d %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%d-%m-%Y:%H:%M:%S',
level=logging.INFO)
logging.info('Starting')
print_msg()


The output looks like below



21-11-2018:12:40:48,586 INFO     [retrier.py:18] Starting
21-11-2018:12:40:48,586 INFO [retrier.py:8] Hello
21-11-2018:12:40:48,586 INFO [retrier.py:9] World
21-11-2018:12:40:58,592 INFO [retrier.py:8] Hello
21-11-2018:12:40:58,592 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 INFO [retrier.py:8] Hello
21-11-2018:12:41:18,596 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 ERROR [retrier.py:22] Received Exception
Traceback (most recent call last):
File "/Users/dmanna/PycharmProjects/demo/retrier.py", line 20, in <module>
print_msg()
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 292, in wrapped_f
return self.call(f, *args, **kw)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 358, in call
do = self.iter(retry_state=retry_state)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 332, in iter
six.raise_from(retry_exc, fut.exception())
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/six.py", line 737, in raise_from
raise value
RetryError: RetryError[<Future at 0x109fa6150 state=finished raised Exception>]


Can someone let me know how can I log the root cause of the exception?










share|improve this question













As discussed in this question I am using tenacity to do retries.



A toy code looks like below



import logging
from tenacity import retry
import tenacity


@retry(wait=tenacity.wait_incrementing(start=10, increment=10, max=100), stop=tenacity.stop_after_attempt(3))
def print_msg():
logging.info('Hello')
logging.info("World")
raise Exception('Test error')


if __name__ == '__main__':
logging.basicConfig(
format='%(asctime)s,%(msecs)d %(levelname)-8s [%(filename)s:%(lineno)d] %(message)s',
datefmt='%d-%m-%Y:%H:%M:%S',
level=logging.INFO)
logging.info('Starting')
print_msg()


The output looks like below



21-11-2018:12:40:48,586 INFO     [retrier.py:18] Starting
21-11-2018:12:40:48,586 INFO [retrier.py:8] Hello
21-11-2018:12:40:48,586 INFO [retrier.py:9] World
21-11-2018:12:40:58,592 INFO [retrier.py:8] Hello
21-11-2018:12:40:58,592 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 INFO [retrier.py:8] Hello
21-11-2018:12:41:18,596 INFO [retrier.py:9] World
21-11-2018:12:41:18,596 ERROR [retrier.py:22] Received Exception
Traceback (most recent call last):
File "/Users/dmanna/PycharmProjects/demo/retrier.py", line 20, in <module>
print_msg()
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 292, in wrapped_f
return self.call(f, *args, **kw)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 358, in call
do = self.iter(retry_state=retry_state)
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/tenacity/__init__.py", line 332, in iter
six.raise_from(retry_exc, fut.exception())
File "/Users/dmanna/PycharmProjects/demo/venv/lib/python2.7/site-packages/six.py", line 737, in raise_from
raise value
RetryError: RetryError[<Future at 0x109fa6150 state=finished raised Exception>]


Can someone let me know how can I log the root cause of the exception?







python python-2.7






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asked Nov 21 '18 at 7:13









tuk

1,51012152




1,51012152












  • you could see the whole exception chain under python3.
    – georgexsh
    Nov 21 '18 at 8:13


















  • you could see the whole exception chain under python3.
    – georgexsh
    Nov 21 '18 at 8:13
















you could see the whole exception chain under python3.
– georgexsh
Nov 21 '18 at 8:13




you could see the whole exception chain under python3.
– georgexsh
Nov 21 '18 at 8:13












1 Answer
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you could use reraise=True option, there is no verbose doc, but you could read its source:



...
File "53406953.py", line 10, in print_msg
raise Exception('Test error')
Exception: Test error





share|improve this answer























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    1 Answer
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    1 Answer
    1






    active

    oldest

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    active

    oldest

    votes






    active

    oldest

    votes









    2














    you could use reraise=True option, there is no verbose doc, but you could read its source:



    ...
    File "53406953.py", line 10, in print_msg
    raise Exception('Test error')
    Exception: Test error





    share|improve this answer




























      2














      you could use reraise=True option, there is no verbose doc, but you could read its source:



      ...
      File "53406953.py", line 10, in print_msg
      raise Exception('Test error')
      Exception: Test error





      share|improve this answer


























        2












        2








        2






        you could use reraise=True option, there is no verbose doc, but you could read its source:



        ...
        File "53406953.py", line 10, in print_msg
        raise Exception('Test error')
        Exception: Test error





        share|improve this answer














        you could use reraise=True option, there is no verbose doc, but you could read its source:



        ...
        File "53406953.py", line 10, in print_msg
        raise Exception('Test error')
        Exception: Test error






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 21 '18 at 8:26

























        answered Nov 21 '18 at 8:20









        georgexsh

        10.1k11136




        10.1k11136






























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