plugins/perl/i-scream_uptime.pl

#!/usr/bin/perl -w

#-----------------------------------------------------------------
# i-scream host plugin - uptime & load calculation
#     $Author: tdb $
#     $Id: i-scream_uptime.pl,v 1.1 2001/11/19 21:42:11 tdb Exp $
#
# A short perl script to calculate the uptime in seconds,
# and to get the current system loads.
#-----------------------------------------------------------------


$| = 1;

# You'd be silly not to use this ;)
use strict;

# Get the OS type from the args, or try towork it out
my($ostype) = $ARGV[0];
$ostype = `uname -s` if not defined $ostype;
chomp($ostype);

# Decide which paths we should use.
my($uptimebin);
if ($ostype eq "SunOS" || $ostype eq "Linux" || $ostype eq "FreeBSD") {
    # covers: Solaris 7/8
    # covers: Debian r2.2
    # covers: FreeBSD 4.X
    $uptimebin = "/usr/bin/uptime";
}
else {
    print "i-scream_uptime.pl Error: Unable to identify system type - \"$ostype\".\n";
    print "\"uname -s\" does not report one of the following known types;\n";
    print "      SunOS, Linux, FreeBSD\n";
    exit(1);
}

# Run the following components: -
&include_uptime();

# End the program normally.
exit(0);


# sub to print pairs of data, separated by a single space character.
# If the second argument is undefined, then the pair is still printed,
# however, the value shall be displayed as the the 'default' value
# if the passed value was undefined.
sub print_pair($$$) {
    my($default, $name, $value) = @_;

    if (!defined $value) {
        $value = $default;
    }

    # Remove the trailing linefeed if we've not already done so.
    chomp($value);

    # print the pair of data with a space inbetween.
    print "$name $value\n";
}

# get system uptime in seconds, and the current load
sub include_uptime() {

    # grab the uptime
    my($uptime) = `$uptimebin`;
    
    # grab the load
    &print_pair(0, "packet.load.load1", $uptime =~ /load average.?:\s*([^\s]+?),/);
    &print_pair(0, "packet.load.load5", $uptime =~ /load average.?:\s*.+?,\s*([^\s]+?),/);
    &print_pair(0, "packet.load.load15", $uptime =~ /load average.?:\s*.+?,\s*.+?,\s*([^\s]+)/);

    # work out the days, hours, and minutes

    if ($uptime =~ /day.*,\s+([0-9]+):([0-9]+)/) {
      # normal
        $uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+):([0-9]+)/;
        $uptime = "$1:$2:$3";
    }
    else {
        if ($uptime =~ /day/) {
            if ($uptime =~ /hr/) {
              # 0 minutes
                $uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+)\s+[^\s]+,/;
                $uptime = "$1:$2:0";
            }
            elsif ($uptime =~ /min/) {
              # 0 hours
                $uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+)\s+[^\s]+,/;
                $uptime = "$1:0:$2";
            }
            else {
              # 0 hours and 0 mins
                $uptime =~ /up\s+([0-9]+)/;
                $uptime = "$1:0:0";
            }
        }
        elsif ($uptime =~ /hr/) {
          # 0 days and 0 minutes
            $uptime =~ /up\s+([0-9]+)\s+/;
            $uptime = "0:$1:0";
        }
        elsif ($uptime =~ /min/) {
          # 0 days and 0 hours
            $uptime =~ /up\s+([0-9]+)\s+/;
            $uptime = "0:0:$1";
        }
        else {
          # 0 days
            $uptime =~ /up\s+([0-9]+):([0-9]+)/;
            $uptime = "0:$1:$2";
        }
    }

    # turn into seconds
    $uptime =~ /([0-9]+):([0-9]+):([0-9]+)/;
    $uptime = ($3+($2+($1*24))*60)*60;
    
    # print the value out
    &print_pair("unknown", "packet.os.uptime", $uptime);

}
Revision:	1.2
Committed:	Tue Dec 18 04:07:17 2001 UTC (24 years ago) by tdb
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+6 -12 lines
Log Message:	Solaris process accounting made me notice the number of times `uname` was being called. It was way over the top, especially as it's unlikely to change during an invocation of ihost :) Before it was run by each plugin every time they were run - in total 50 times a minute :/ Now, it's run once by ihost at startup, and that's it. The value read at startup is passed as a command line argument to each plugin. The plugins can fallback on working out the ostype using `uname` if they don't get given one on the command line.
#	Content
1	#!/usr/bin/perl -w
2
3	#-----------------------------------------------------------------
4	# i-scream host plugin - uptime & load calculation
5	# $Author: tdb $
6	# $Id: i-scream_uptime.pl,v 1.1 2001/11/19 21:42:11 tdb Exp $
7	#
8	# A short perl script to calculate the uptime in seconds,
9	# and to get the current system loads.
10	#-----------------------------------------------------------------
11
12
13	$\| = 1;
14
15	# You'd be silly not to use this ;)
16	use strict;
17
18	# Get the OS type from the args, or try towork it out
19	my($ostype) = $ARGV[0];
20	$ostype = `uname -s` if not defined $ostype;
21	chomp($ostype);
22
23	# Decide which paths we should use.
24	my($uptimebin);
25	if ($ostype eq "SunOS" \|\| $ostype eq "Linux" \|\| $ostype eq "FreeBSD") {
26	# covers: Solaris 7/8
27	# covers: Debian r2.2
28	# covers: FreeBSD 4.X
29	$uptimebin = "/usr/bin/uptime";
30	}
31	else {
32	print "i-scream_uptime.pl Error: Unable to identify system type - \"$ostype\".\n";
33	print "\"uname -s\" does not report one of the following known types;\n";
34	print " SunOS, Linux, FreeBSD\n";
35	exit(1);
36	}
37
38	# Run the following components: -
39	&include_uptime();
40
41	# End the program normally.
42	exit(0);
43
44
45
46
47	# sub to print pairs of data, separated by a single space character.
48	# If the second argument is undefined, then the pair is still printed,
49	# however, the value shall be displayed as the the 'default' value
50	# if the passed value was undefined.
51	sub print_pair($$$) {
52	my($default, $name, $value) = @_;
53
54	if (!defined $value) {
55	$value = $default;
56	}
57
58	# Remove the trailing linefeed if we've not already done so.
59	chomp($value);
60
61	# print the pair of data with a space inbetween.
62	print "$name $value\n";
63	}
64
65	# get system uptime in seconds, and the current load
66	sub include_uptime() {
67
68	# grab the uptime
69	my($uptime) = `$uptimebin`;
70
71	# grab the load
72	&print_pair(0, "packet.load.load1", $uptime =~ /load average.?:\s*([^\s]+?),/);
73	&print_pair(0, "packet.load.load5", $uptime =~ /load average.?:\s.+?,\s([^\s]+?),/);
74	&print_pair(0, "packet.load.load15", $uptime =~ /load average.?:\s.+?,\s.+?,\s*([^\s]+)/);
75
76	# work out the days, hours, and minutes
77
78	if ($uptime =~ /day.*,\s+([0-9]+):([0-9]+)/) {
79	# normal
80	$uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+):([0-9]+)/;
81	$uptime = "$1:$2:$3";
82	}
83	else {
84	if ($uptime =~ /day/) {
85	if ($uptime =~ /hr/) {
86	# 0 minutes
87	$uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+)\s+[^\s]+,/;
88	$uptime = "$1:$2:0";
89	}
90	elsif ($uptime =~ /min/) {
91	# 0 hours
92	$uptime =~ /up\s+([0-9]+)\s+[^\s]+,\s+([0-9]+)\s+[^\s]+,/;
93	$uptime = "$1:0:$2";
94	}
95	else {
96	# 0 hours and 0 mins
97	$uptime =~ /up\s+([0-9]+)/;
98	$uptime = "$1:0:0";
99	}
100	}
101	elsif ($uptime =~ /hr/) {
102	# 0 days and 0 minutes
103	$uptime =~ /up\s+([0-9]+)\s+/;
104	$uptime = "0:$1:0";
105	}
106	elsif ($uptime =~ /min/) {
107	# 0 days and 0 hours
108	$uptime =~ /up\s+([0-9]+)\s+/;
109	$uptime = "0:0:$1";
110	}
111	else {
112	# 0 days
113	$uptime =~ /up\s+([0-9]+):([0-9]+)/;
114	$uptime = "0:$1:$2";
115	}
116	}
117
118	# turn into seconds
119	$uptime =~ /([0-9]+):([0-9]+):([0-9]+)/;
120	$uptime = ($3+($2+($124))60)*60;
121
122	# print the value out
123	&print_pair("unknown", "packet.os.uptime", $uptime);
124
125	}