From: Greg Ercolano <erco@(email surpressed)>
Subject: [Q+A] Python Submit script?
   Date: Sat, 23 Jun 2007 00:32:55 -0400

> Is there an example Rush submit script in Python?

    Yes, there's a very simple example included with the
    latest Rush release (102.42a8) in the rush/examples directory;
    see the simple-submit.py script.

    If you want a slightly more complex example that shows
    how to grab the jobid so it can automatically launch irush,
    see the following.

--- snip
#!/usr/bin/env python
import os
import sys
import re
import tempfile

#
# Very simple example of how to submit a rush job in python
#     Tested on Mac OSX 10.4.x with the default version of Python.
#

if len(sys.argv) == 1:

    # SUBMIT THE JOB
    #    Save stdout/err to file to later parse jobid
    #
    tmp = tempfile.mktemp(".tmp-submit")
    cmd = "rush -submit > " + tmp + " 2>&1"
    submit = os.popen(cmd, 'w')
    submit.write("title   PYTHON TEST JOB\n" +
                 "frames  1-10\n" +
                 "logdir  -\n" +
                 "command python " + sys.argv[0] + " -render\n" +
                 "cpus    +any=5\n")
    err = submit.close()

    # GRAB SUBMIT OUTPUT, REMOVE TMP FILE
    try:
        out = open(tmp, "r").readlines()
        print "".join(out)
        os.remove(tmp)

    except IOError, (errno,errmsg):
        print "Can't create tmp file " + tmp + ": " + errmsg
        sys.exit(0)

    # SUBMIT FAILED?
    if err:
        print "--- SUBMIT FAILED"
        sys.exit(1)

    # SUCCESS? PARSE JOBID
    jobid = re.search("RUSH_JOBID.(\S+)", "\n".join(out)).groups()[0]
    if jobid == None:
        sys.stderr.write("-- NO JOBID -- JOB DID NOT SUBMIT\n")
        sys.exit(1)

    # LAUNCH IRUSH, SHOW JOB'S FRAMELIST
    os.system("irush -button Frames " + jobid)
    sys.exit(0)

if sys.argv[1] == "-render" :

    # RENDER THE JOB
    #    This section is run on each machine.
    #    As an example, we run a 'netstat -rn' command on each machine.
    #
    print "--- Working on frame ", os.environ["RUSH_FRAME"]
    sys.stdout.flush()
    err = os.system("netstat -rn")
    if err:
        print "--- netstat failed: exit code:", (err >> 8)
        sys.exit(1)                     # RUSH: FAIL
    else:
        print "--- netstat OK: exit code:", (err >> 8)
        sys.exit(0)                     # RUSH: OK

print "Unknown argument '" + sys.argv[1] + "'"
sys.exit(1)

--- snip

    I'm not so hot at Python (yet), so there's probably better ways
    to do this; comments welcome.

    For instance, one could probably use the Python "Popen" class,
    or the older popen3() to avoid the above use of a temp file.
    Thing is, those pipe functions seemed a bit complicated to use
    bidirectionally without the possibility of deadlocking, so I
    went with the temp file approach instead for stability.

--
Greg Ercolano, erco@(email surpressed)
Rush Render Queue, http://seriss.com/rush/
Tel: (Tel# suppressed)
Fax: (Tel# suppressed)
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