Hi, After-commit hooks don't work in async mode! They allow to declare callbacks which will be called after transaction commit, but server is waiting for these callbacks to be finished (in synchronous mode) before sending response to client. If you need async mode, you have (at least) to start another thread which will handle your asynchronous tasks.
Regards, Thierry Le jeu. 10 janv. 2019 à 13:37, Zsolt Ero <zsolt....@gmail.com> a écrit : > Actually, it doesn't result in async-like behaviour, the client is > still waiting for the function inside the commit hook. I guess I don't > understand the concept then. > > On Thu, 10 Jan 2019 at 13:15, Zsolt Ero <zsolt....@gmail.com> wrote: > > > > I'm just now implementing this. Are you saying that basically, by using > addAfterCommitHook, I can replace put relatively fast (say, <10 seconds), > functions into async-like behaviour, without requiring any external queue > service? > > > > old: > > > > # send email was an async function, via a decorator (using Huey) > > send_email( > > to_email=user.email, > > subject='account activation', > > text=email_text, > > ) > > > > > > > > > > > > new: > > > > request.tm.get().addAfterCommitHook(send_email_hook, kws=dict( > > to_email=user.email, > > subject='account activation', > > text=email_text, > > )) > > > > > > + a helper function: > > > > > > def send_email_hook(success, **kwargs): > > if success: > > send_email(**kwargs) > > > > I have two questions regarding this: > > 1. When does success == False? > > 2. What does the warning on transaction's doc page mean? > > > >> Hook functions which do raise or propagate exceptions will leave the > application in an undefined state. > > > > > > Practically speaking, should I put the send_email function into a > try-except block? > > > > -- > > You received this message because you are subscribed to a topic in the > Google Groups "pylons-discuss" group. > > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/pylons-discuss/tf5kKsnZRTc/unsubscribe. > > To unsubscribe from this group and all its topics, send an email to > pylons-discuss+unsubscr...@googlegroups.com. > > To post to this group, send email to pylons-discuss@googlegroups.com. > > To view this discussion on the web visit > https://groups.google.com/d/msgid/pylons-discuss/6831e434-6e85-4c41-9797-82c71ad7f2b3%40googlegroups.com > . > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "pylons-discuss" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to pylons-discuss+unsubscr...@googlegroups.com. > To post to this group, send email to pylons-discuss@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/pylons-discuss/CAKw-smAukCYyjhg7wp2PoP4cUCJ0JuchNqYG0LLHpVGGL%2B84mA%40mail.gmail.com > . > For more options, visit https://groups.google.com/d/optout. > -- http://www.imagesdusport.com -- http://pyams.readthedocs.io -- You received this message because you are subscribed to the Google Groups "pylons-discuss" group. To unsubscribe from this group and stop receiving emails from it, send an email to pylons-discuss+unsubscr...@googlegroups.com. To post to this group, send email to pylons-discuss@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/pylons-discuss/CAPX_VWCt_SfPDmYsVSK%2Bwt74j5%2BSFj8vb40LrN9PRBPY2%2Bb7Gg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
