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#!/usr/bin/python2.4
#
# Copyright 2009 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Nagios plugin for script monitoring.
This script is needed as separate from script-monitor.py because Nagios
only understands one line of returned text, and interprets specific
return codes as plugin statuses. These are:
0: OK
1: WARNING
2: CRITICAL
3: UNKNOWN
As such, it was felt more appropriate to separate out the scripts,
even though there is some code duplication.
"""
__metaclass__ = type
__all__ = ['check_script']
import _pythonpath
from datetime import datetime, timedelta
from optparse import OptionParser
from time import strftime
import sys
from canonical.database.sqlbase import connect
from canonical.launchpad.scripts import db_options, logger_options, logger
from canonical.launchpad.scripts.scriptmonitor import check_script
def main():
# XXX: Tom Haddon 2007-07-12
# There's a lot of untested stuff here: parsing options -
# this should be moved into a testable location.
# Also duplicated code in scripts/script-monitor.py
parser = OptionParser(
'%prog [options] (minutes) (host:scriptname) [host:scriptname]'
)
db_options(parser)
logger_options(parser)
(options, args) = parser.parse_args()
if len(args) < 2:
print "Must specify time in minutes and " \
"at least one host and script"
return 3
# First argument is the number of minutes into the past
# we want to look for the scripts on the specified hosts
try:
minutes_ago, args = int(args[0]), args[1:]
start_date = datetime.now() - timedelta(minutes=minutes_ago)
completed_from = strftime("%Y-%m-%d %H:%M:%S", start_date.timetuple())
completed_to = strftime("%Y-%m-%d %H:%M:%S", datetime.now().timetuple())
hosts_scripts = []
for arg in args:
try:
hostname, scriptname = arg.split(':')
except TypeError:
print "%r is not in the format 'host:scriptname'" % arg
return 3
hosts_scripts.append((hostname, scriptname))
except ValueError:
print "Must specify time in minutes and " \
"at least one host and script"
return 3
log = logger(options)
try:
log.debug("Connecting to database")
con = connect(options.dbuser)
error_found = False
msg = []
for hostname, scriptname in hosts_scripts:
failure_msg = check_script(con, log, hostname,
scriptname, completed_from, completed_to)
if failure_msg is not None:
msg.append("%s:%s" % (hostname, scriptname))
error_found = True
if error_found:
# Construct our return message
print "Scripts failed to run: %s" % ', '.join(msg)
return 2
else:
# Construct our return message
print "All scripts ran as expected"
return 0
except Exception, e:
# Squeeze the exception type and stringification of the exception value
# on to one line.
print "Unhandled exception: %s %r" % (e.__class__.__name__, str(e))
return 3
if __name__ == '__main__':
sys.exit(main())
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