[Twisted-Python] unhandled exception in deferred has a delayed logging ?
twisted-python at 2xlp.com
Wed Sep 26 19:46:32 EDT 2012
while migrating some functionality to a deferred callback chain and debugging my app, i noticed this oddity...
if a function doesn't have the proper args/kwargs definition, no error is raised and everything just hangs
for example, if i have these 2 class functions in an internet.TimerService managed class ...
def start_chain( self ):
database.get_dbPool().runInteraction( self.get_update_batch )\
.addCallback( self.process_batch )
and then improperly don't have an arg to capture the return value in the callback...
def process_batch( self ):
then the reactor just seems to hang.
if i kill the process, then the Unhandled Error and Traceback message prints.
If i wait until the next interval that the timerservice runs, then the Unhandled Error and Traceback message will print then ( but that could be minutes/hours later ).
has anyone else noticed this before ?
are there any good ways around this , other than setting the timer service to be within seconds during bugtesting ?
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