Re: [Zope] Problems Executing pdftk from within zope.
Chris Withers wrote at 2006-4-10 18:16 +0100: Jerry Westrick wrote: When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. os.system will spew to stdout, which a daemon process like Zope probably won't enjoy much. If Zope really runs as daemon (on *nix), stdout and stderr are redirected to /dev/null. Output will simply be discarded. By the way, stdin will be /dev/null, too. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
Jerry Westrick wrote: When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. os.system will spew to stdout, which a daemon process like Zope probably won't enjoy much. If'd suggest moving to Zope 2.9, and then using Ptyon 2.4's subprocess module which handles these kinda things much better. Also, I echo Dieter's comments on stuff that needs to be run as root... cheers, Chris -- Simplistix - Content Management, Zope Python Consulting - http://www.simplistix.co.uk ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
SOLVED Re: [Zope] Problems Executing pdftk from within zope.
On Sunday 09 April 2006 19.33, Dieter Maurer wrote: Jerry Westrick wrote at 2006-4-8 22:35 +0200: ... I bet this is the problem... What should the Sigmask look like? If the Python bug is fixed, nothing is blocked. If the Python bug is still there, all blockable signals (i.e. all with the exception of SIGKILL and SIGSTOP) are blocked. Yep, this is the problem sorry about the send single line comments, my fingers are automatically adding new lines to the IM All these different communication programs are giving me keys on the brain 8-( But all the signals are set, so this is the problem... Thanks, everyone for your help to get me past this one, as it really had me stumped I hereby to issue: 30 karma points to Dieter... 20 to Chris 10 to 8-) Thx... Jerry ... Hmm I'll look into this also, although Zope requires specefic versions... Not precise versions only precise series. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
On Saturday 08 April 2006 01.24, Jonathan wrote: Have you tried running it as a spawned job from the shell? If something is pooched in the environment then the job should hang (then you know it is not a zope problem). Jonathan Using the if __name__ == '__main__': main() I have executed the command from the External script file (as user root) with python aw4.py ecmd2 and it works... But when called from zope it hangs... I've tried with popen(...) and spawnv(...) I've had the script dump the environment variables and the version dumped by root, differs from the version dumped from zope only in variables with cookie in them! Now I tried to do a simple cat and it don't seam to work either... I'm quite fustrated so it's time to go have fun (install SUSE 10 XEN on SUSE 10 Whp!). If anyone, anywhere has any ideas WTF is going on here, please give me a hint! Jerry ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
Don't know if this will help, but here is a line from one of my external
methods that works:
rstat = commands.getstatusoutput('./qrcode '+quoted_instr)
'qrcode' is a bash script file (linux) that resides in '/apps/zope/var' (no
messing around with PATH or environment variables) and takes a string
'quoted_instr' as an input parameter.
if you do 'return str(rstat)' after the call you should get some error info
if the call fails.
HTH
Jonathan
- Original Message -
From: Jerry Westrick [EMAIL PROTECTED]
To: zope@zope.org
Sent: Saturday, April 08, 2006 10:47 AM
Subject: Re: [Zope] Problems Executing pdftk from within zope.
On Saturday 08 April 2006 01.24, Jonathan wrote:
Have you tried running it as a spawned job from the shell? If something
is
pooched in the environment then the job should hang (then you know it is
not a zope problem).
Jonathan
Using the if __name__ == '__main__': main()
I have executed the command from the External script file
(as user root) with python aw4.py ecmd2 and it works...
But when called from zope it hangs...
I've tried with popen(...)
and spawnv(...)
I've had the script dump the environment variables
and the version dumped by root, differs from the version
dumped from zope only in variables with cookie in them!
Now I tried to do a simple cat and it don't seam to work either...
I'm quite fustrated so it's time to go have fun (install SUSE 10 XEN on
SUSE
10 Whp!).
If anyone, anywhere has any ideas WTF is going on here,
please give me a hint!
Jerry
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Re: [Zope] Problems Executing pdftk from within zope.
Jerry Westrick wrote at 2006-4-8 00:42 +0200: I trying to modify pdf files from within zope. I use the following command: '/usr/bin/pdftk /t/in.pdf attach_files /t/a1.pdf /t/a2.pdf output /t/out.pdf' When I execute it as root it works... I do not know what pdftk does. But from your description, it would be really strange when it required execution as root. If it really does, I would say: do not use it! When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. Apart from the most recent Python versions, earlier Python versions had a bug: forked processes from multi-threaded applications (such as Zope) had all signals blocked. Thus, when a forked application used signals (e.g. alarm), it could hang. Checking the sigmask of the application can tell you whether this problem still exists with your Python version. The most recent Python versions in the 2.3 and 2.4 series should have this problem fixed. -- Dieter ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
On Saturday 08 April 2006 20.47, Dieter Maurer wrote: Jerry Westrick wrote at 2006-4-8 00:42 +0200: I trying to modify pdf files from within zope. I use the following command: '/usr/bin/pdftk /t/in.pdf attach_files /t/a1.pdf /t/a2.pdf output /t/out.pdf' When I execute it as root it works... I do not know what pdftk does. But from your description, it would be really strange when it required execution as root. If it really does, I would say: do not use it! When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. Apart from the most recent Python versions, earlier Python versions had a bug: forked processes from multi-threaded applications (such as Zope) had all signals blocked. Thus, when a forked application used signals (e.g. alarm), it could hang. Checking the sigmask of the application can tell you whether this problem still exists with your Python version. Ahhh, I bet this is the problem... The most recent Python versions in the 2.3 and 2.4 series should have this problem fixed. ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
On Saturday 08 April 2006 20.47, Dieter Maurer wrote: Jerry Westrick wrote at 2006-4-8 00:42 +0200: I trying to modify pdf files from within zope. I use the following command: '/usr/bin/pdftk /t/in.pdf attach_files /t/a1.pdf /t/a2.pdf output /t/out.pdf' When I execute it as root it works... I do not know what pdftk does. But from your description, it would be really strange when it required execution as root. If it really does, I would say: do not use it! When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. Apart from the most recent Python versions, earlier Python versions had a bug: forked processes from multi-threaded applications (such as Zope) had all signals blocked. Thus, when a forked application used signals (e.g. alarm), it could hang. Checking the sigmask of the application can tell you whether this problem still exists with your Python version. I bet this is the problem... What should the Sigmask look like? Later on tonight, I'll publish what the values are, and what versions of python I'm using... The most recent Python versions in the 2.3 and 2.4 series should have this problem fixed. Hmm I'll look into this also, although Zope requires specefic versions... Thx... Jerry P.S. Sorry about the preveous post ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
[Zope] Problems Executing pdftk from within zope.
Hello Zopistas... I trying to modify pdf files from within zope. I use the following command: '/usr/bin/pdftk /t/in.pdf attach_files /t/a1.pdf /t/a2.pdf output /t/out.pdf' When I execute it as root it works... When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. Even with set the setuid bit on /usr/bin/pdftk, making the zope spawned task run as root the command just hangs (I've confirmed that the task is actually running as root!) I'm sure I've forgoten something silly, but after bashing it around for several hours I just can't figure out why it hangs Any suggestions at what the problem could be are welcome 8-) Jerry P.S. Here my Control panel info, incase it's relevant Zope Version(unreleased version, python 2.3.4, linux2) Python Version 2.3.4 (#1, Oct 5 2004, 00:26:51) [GCC 3.3.4 (pre 3.3.5 20040809)] System Platform linux2 SOFTWARE_HOME /opt/zope/lib/python ZOPE_HOME /opt/zope INSTANCE_HOME /var/opt/zope/default CLIENT_HOME /var/opt/zope/default/var Network Services ZServer.HTTPServer.zhttp_server (Port: 8080) ZServer.FTPServer.FTPServer (Port: 8021) ZServer.HTTPServer.zhttp_server (Port: 8088) Process Id 32058 (1110281136) Running For 12 min 58 sec ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] Problems Executing pdftk from within zope.
Have you tried running it as a spawned job from the shell? If something is pooched in the environment then the job should hang (then you know it is not a zope problem). Jonathan - Original Message - From: Jerry Westrick [EMAIL PROTECTED] To: Zope@zope.org Sent: Friday, April 07, 2006 6:42 PM Subject: [Zope] Problems Executing pdftk from within zope. Hello Zopistas... I trying to modify pdf files from within zope. I use the following command: '/usr/bin/pdftk /t/in.pdf attach_files /t/a1.pdf /t/a2.pdf output /t/out.pdf' When I execute it as root it works... When executed from within zope, (this i've done via external command that executes os.system(...)) A task is started to executed it, but the task hangs. Even with set the setuid bit on /usr/bin/pdftk, making the zope spawned task run as root the command just hangs (I've confirmed that the task is actually running as root!) I'm sure I've forgoten something silly, but after bashing it around for several hours I just can't figure out why it hangs Any suggestions at what the problem could be are welcome 8-) Jerry P.S. Here my Control panel info, incase it's relevant Zope Version (unreleased version, python 2.3.4, linux2) Python Version 2.3.4 (#1, Oct 5 2004, 00:26:51) [GCC 3.3.4 (pre 3.3.5 20040809)] System Platform linux2 SOFTWARE_HOME /opt/zope/lib/python ZOPE_HOME /opt/zope INSTANCE_HOME /var/opt/zope/default CLIENT_HOME /var/opt/zope/default/var Network Services ZServer.HTTPServer.zhttp_server (Port: 8080) ZServer.FTPServer.FTPServer (Port: 8021) ZServer.HTTPServer.zhttp_server (Port: 8088) Process Id 32058 (1110281136) Running For 12 min 58 sec ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev ) ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
