#!/usr/bin/perl
# SCM: @(#): $Id$
#
# DESCRIPTION:
#	Nagios plugin to return perf data based on the startup time of Nagios
#	Requires Nagios 2.X and Altinity's patch for the MONITORINGSTARTTIME environment variable
#
# AUTHORS:
#	Copyright (C) 2007 Altinity Limited
#
#    This file is part of Opsview
#
#    Opsview is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    Opsview is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with Opsview; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#


use warnings;
use strict;
sub nagios_exit { my ($val, $text) = @_; print $text,"\n"; exit $val; };

if (@ARGV && $ARGV[0] eq "-h") {
	print <<'EOF';
check_nagios_startup

Returns the time taken between Nagios starting up and starting to monitor

EOF
	exit 0;
}
my $monitoringstarttime = $ENV{NAGIOS_MONITORINGSTARTTIME} || nagios_exit( 2, "No NAGIOS_MONITORINGSTARTTIME environment variable found");

my $processstarttime = $ENV{NAGIOS_PROCESSSTARTTIME} || nagios_exit( 2, "No NAGIOS_PROCESSSTARTTIME environment variable found");

my $delay = $monitoringstarttime - $processstarttime;

my $text;
if ($delay == 1) {
	$text = "Nagios started up in 1 second";
} else {
	$text = "Nagios started up in $delay seconds";
}
nagios_exit(0, "$text | delay=$delay");