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This repository was archived by the owner on Oct 23, 2023. It is now read-only.
This repository was archived by the owner on Oct 23, 2023. It is now read-only.

Logging/breadcrumb integration with multiple threads #1024

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@mikepurvis

Description

@mikepurvis

I'm trying to use raven.handlers.logging.SentryHandler to capture errors and exceptions in my application , but I'm getting some strange behaviour around breadcrumbs that I'm hoping I can get a little help understanding. Potentially this is related to #806 (which @mitsuhiko was looking at), but seeing this behaviour without multiprocessing involved felt like it warranted a new ticket.

MWE:

import raven
import logging
from raven.handlers.logging import SentryHandler
from time import sleep
from threading import Thread

logger = logging.getLogger('foo')
logger.setLevel(logging.DEBUG)
other_logger = logging.getLogger('bar')
other_logger.setLevel(logging.DEBUG)

client = raven.Client()
sentryLogHandler = SentryHandler(client, level="ERROR")
logger.addHandler(sentryLogHandler)
other_logger.addHandler(sentryLogHandler)

sh = logging.StreamHandler()
logger.addHandler(sh)
other_logger.addHandler(sh)

logger.debug("1")
logger.info("2")
other_logger.info("3")

def foo():
    other_logger.info("4")
    logger.critical("5")
t = Thread(target=foo)
t.start()
sleep(0.1)

logger.critical("6")

Output in the console (via StreamHandler) is as expected:

1
2
3
4
5
6

However, in Sentry:

  • The event for 6 is missing the breadcrumbs for 4 and 5 (from the other thread), and
  • The event for 5 has no breadcrumbs at all, not even the 4 one from within the same thread.

Any idea what's going on here?

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