On Mon, Jul 27, 2015 at 04:28:59PM +0200, Laurent Bercot wrote:
> s6-2.2.0.0 is out.
>
> * s6-notifywhenup has been removed. Please use the ./notification-fd
> file for readiness notification.
Hi Laurent,
If I understand correctly, any 'readiness' reporting mechanism must originate
from the run script (to inherit notification-fd).
Do you have any suggestions for adding readiness support to a daemon *without
modifying that daemon*?
Previously, I had been using s6-log to match a particular line from the
daemon's log output (e.g. "$service is ready"), sending the matched line to
something like 'cd .. s6-notifywhenup echo' (note: a child process of run/log,
not run).
To support the same through the notification-fd, I can imagine a rough scheme
such as:
in run:
background { if { s6-ftrig-wait fifodir U } fdmove 1 3 echo }
... run the daemon
in log/run
pipeline -w
{
forstdin -d"\n" i s6-ftrig-noitfy ../fifodir U
}
s6-log
- +"daemon is ready" 1
+ t n20 !"gzip -nq9" logdir
Thanks,
Patrick
