[cups.general] How to query the originating hostname from the C API?

[Jerome Alet]

Hi,

On Wed, Jan 17, 2007 at 06:58:22AM -0500, Dominik Kubla wrote:
> 
> I maintain a simple in-house monitoring application. I would like 
> to extended the list of queued jobs to display the origination 
> hostname. 

Not sure how I'd do it with the CUPS' C API, but in Python I'd download
pkipplib from http://www.pykota.com and then I'd do it from the Python
interactive interpreter :

--- CUT ---
jerome at nordine:~$ python
Python 2.4.4 (#2, Oct 20 2006, 00:23:25) 
[GCC 4.1.2 20061015 (prerelease) (Debian 4.1.1-16.1)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from pkipplib import pkipplib
>>> cups = pkipplib.CUPS()        # http://localhost:631 by default
>>> answer = cups.getJobAttributes(500) # Retrieve job 500's attributes
>>> if answer is None :
....     print "ERROR"
.... else :
....     print answer.job["job-originating-host-name"]
.... 
[('nameWithoutLanguage', 'localhost')]
>>> hostname = answer.job["job-originating-host-name"][0][1]
>>> print hostname
localhost
--- CUT ---

Or in a non-interactive way, save the following file as 'getjohn' and
then do a 'chmod +x getjohn' :

--- CUT ---
#! /usr/bin/env python
import sys
from pkipplib import pkipplib

if len(sys.argv) != 2 :
    sys.stderr.write("usage : getjohn jobid\n")
else :    
    jobid = int(sys.argv[1])
    cups = pkipplib.CUPS()
    answer = cups.getJobAttributes(jobid)
    if answer is None :
        sys.stderr.write("ERROR when talking to CUPS...\n")
    else :    
        try :
            print answer.job["job-originating-host-name"][0][1]
        except KeyError :    
            sys.stderr.write("ERROR, probably incorrect jobid...\n")
--- CUT ---

Then :

        $ ./getjohn 500
        
would print the job originating host name for job 500, or an error        
message if not available.

hoping this helps

bye

Jerome Alet