check_cups

#!/usr/bin/env python
#
# Check that the oldest entry in the CUPS queue is new enough.
#
# Usage: check_cups queue
#
# This check script is maintained in a Subversion repository at
# http://lsvn.lysator.liu.se/svnroot/nagios-plugins.  Contact
# <ceder@lysator.liu.se> for commit access.

import os
import sys
import time

TIME_FORMATS = [
    "%a %b %d %H:%M:%S %Y",
    "%a %d %b %Y %H:%M:%S %p %Z",
    ]

def check_queue(host, queue):
    now = time.time()
    worst_age = 0
    worst_user = None
    ctr = 0
    bad_time = False

    if host is None:
        fd = os.popen("lpstat -o %s" % (queue, ))
    else:
        fd = os.popen("lpstat -h %s -o %s" % (host, queue))
    for line in fd:
	ctr = ctr + 1
        qid, who, size, when = line.strip().split(None, 3)
        age = None
        for fmt in TIME_FORMATS:
            try:
                age = now - time.mktime(time.strptime(when, fmt))
            except ValueError:
                pass
            if age is not None:
                break
        if age is None:
            bad_time = True
	elif age > worst_age:
	    worst_age = age
	    worst_user = who

    if fd.close():
	print "UNKNOWN - bad exit status from lpstat"
	sys.exit(3)

    if worst_age > 120 * 60:
	print "CRITICAL - %d jobs, %.1f minutes, oldest %s" % (
	    ctr, worst_age/60, worst_user)
	sys.exit(2)
    elif worst_age > 15 * 60:
	print "WARNING - %d jobs, %.1f minutes, oldest %s" % (
	    ctr, worst_age/60, worst_user)
	sys.exit(1)
    elif bad_time:
        print "UNKNOWN - bad time format. %d jobs in queue" % (ctr, )
        sys.exit(3)
    elif ctr == 0:
	print "OK - empty queue"
	sys.exit(0)
    else:
	print "OK - %d jobs in queue, oldest is %.1f seconds old" % (
            ctr, worst_age)
	sys.exit(0)
	
    
if __name__ == '__main__':
    if len(sys.argv) == 2:
        check_queue(None, sys.argv[1])
    else:
        check_queue(sys.argv[1], sys.argv[2])