Re: calling ConTeXt as a background process (SOLVED)

From: Henning Hraban Ramm <hraban@fiee.net>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: calling ConTeXt as a background process (SOLVED)
Date: Fri, 8 Oct 2010 21:44:04 +0200	[thread overview]
Message-ID: <8F16AAE5-1206-43F6-B6DD-FD0F0D187E19@fiee.net> (raw)
In-Reply-To: <90D46F76-AE5F-4A42-9FDC-8FAA3CE91EEF@awi.de>

Ok, the failures were the same with fcgi and gunicorn app servers.

But it _works_ with django's dev server (which you must not use in  
production due to memory/security holes etc.).

While ConTeXt runs it looks like:

5852 25767 TS   21 18:04 pts/0    00:00:00      \_ python manage.py  
runserver 8000
1477  5852 TS   23 18:07 pts/0    00:00:03          \_ /var/www/ 
cerebrale/bin/python manage.py runserver 8000
3395  1477 TS   22 18:08 pts/0    00:00:00              \_ /bin/sh -c  
date "+%Y-%m-%d %H:%M:%S" && cd /var/www/.../_textemp && /var/opt/ 
context/tex/texmf-linux-64/bin/context --purgeall --batchmode -- 
result="/var/www/...
3397  3395 TS   22 18:08 pts/0    00:00:00                  \_ /bin/ 
sh /var/opt/context/tex/texmf-linux-64/bin/context --purgeall -- 
batchmode --result=/var/www/...
3398  3397 TS   15 18:08 pts/0    00:00:00                      \_  
texlua /var/opt/context/tex/texmf-linux-64/bin/mtxrun --script context  
--purgeall --batchmode --result=/var/www/...
3400  3398 TS   21 18:08 pts/0    00:00:00                          \_  
luatex --interaction=batchmode --fmt=/var/opt/context/tex/texmf- 
cache/.../cont-en --lua=/var/opt/context/tex...

TeX completes fast, and everything seems well afterwards.

But I started that app server from an active shell. Maybe that's the  
difference?
Right, if I start gunicorn manually, it also works.
So, the culprit seems to be the automatic background start of the app  
server via daemontools.

I'll have to test other means of starting and supervising the  
processes - e.g. runit or supervisor.
Since I like Python and don't want to replace "init" yet, I try the  
latter first.

Some hours later:
YES IT WORKS with supervisor so far!

Thank you all for your patience, ideas and help!

Greetlings from Lake Constance!
Hraban
---
http://www.fiee.net/texnique/
http://wiki.contextgarden.net
https://www.cacert.org (I'm an assurer)

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