[Freeswitch-dev] scheduler

Michael Collins msc at freeswitch.org
Fri Oct 23 15:37:31 PDT 2009

Thanks for sharing, we appreciate it!

On Fri, Oct 23, 2009 at 11:43 AM, Trixter aka Bret McDanel <
trixter at 0xdecafbad.com> wrote:

> for anyone that is interested, in
> <SRC>/contrib/trixter/scheduled_event.lua there is a script, which
> admittedly is not very well tested (written last night) that allows for
> mysql events to be scheduled to be run.
> Why mysql and not sched_api or similar?  Well this allows the scheduled
> events to survive past a reboot, shutdown, crash, alien abduction, or
> other issue.  It also is written in a way to allow for many switches to
> each pull an event off one at a time and process them, thus distributing
> the load.  sched_api requires that the scheduled event exist on a
> particular switch which can be a bit messy in some applications.
> So you can do a "hotel style wake up call" (good for getting out of
> boring meetings or bad blind dates) or really anything you want.
> You can start/stop the script, even change the DB credentials without a
> restart to allow for easier load management or maintenance.
> Its a trivial script, but I didnt see anything like this elsewhere.  If
> people have specific feature requests (like adding a machine column to
> the table so that certain events can be scheduled only for specific
> machines, or only pulling events when the load is under X) let me know
> and I will look into doing that.
> The only problem that I saw last night was that it runs every
> "heartbeat" (FS eventing system) and if you have more tasks to
> accomplish in a given interval it can get a little backlogged and does
> not do any notification to that effect.
> --
> Trixter http://www.0xdecafbad.com     Bret McDanel
> pgp key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x8AE5C721
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