> On Apr 17, 2017, at 8:16 PM, David Adams via 4D_Tech <4d_tech@lists.4d.com> > wrote: > > On Tue, Apr 18, 2017 at 4:44 AM, James Crate via 4D_Tech < > 4d_tech@lists.4d.com> wrote: > >> Every time I add some automatic process on the server, I wonder whether >> there is either >> >> a. some built-in functionality for this that I have completely missed >> > > Nope. No cron or cron table. For the world's simplest implementation (and > nothing you haven't probably already written yourself in the past):
A long time ago at Deep Sky I had written one. Given SGW’s love of the resource fork, that was obviously the “database” it used. Hopefully none of that code is still being used anywhere... I agree it’s not very difficult to write a job scheduler, but it’s tedious, and only a couple minutes to set up a process to run periodically. In this case the new jobs I am adding all need to run once/day, so writing a full-fledged scheduler will have to wait for another day. > Given your background, it would probably take you a couple of hours to > knock something out with the basics. But, yeah, date math testing is a > nightmare. At least me, but I've got bird taxonomies filling up the parts > of my brain where date math should be. 4D date/time math is annoying because you have to calculate with the date and time separately. I’m a bit spoiled with being able to just use cron to invoke jobs in Ruby/Rails systems. Cron wouldn’t be a great choice for a 4D system because 4D is not managed from the command line so it would be a pretty “invisible” part of the system. However, it does make me idly curious about how difficult it would be to tell a 4D Server to "do things” from the command line. I haven’t thought of anything clever, though. It could be done with a process listening on a local socket, and some external script that knows how to communicate with it, but that also feels tedious and inelegant to implement, and I don’t want it bad enough for that. Just thinking about all the send/receive packet and 4D string parsing... Jim ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
