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#!/usr/bin/perl -w

###############################################################################

#    Webmin Sysstats - load.pl

#

#    Webmin Sysstats Module

#    Copyright (C) 2002 by Eric Gerbier

#    Bug reports to: gerbier@users.sourceforge.net

#    $Id$

#

#    This program 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.

#

#    This program 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.

#

###############################################################################



use strict;

use warnings;



use English qw(-no_match_vars);

use RRDs;



# to be used alone or from sysstat.pl without warning

# because require verify the path

if ( !exists $ENV{WEBMINSTAT_TEMP} ) {

	use FindBin;

	use lib "$FindBin::Bin/../..";

	## no critic(RequireBarewordIncludes)

	require 'sysstats-aquisition-lib.pl';

	## use critic

}



# there are several way to get load

# /proc/loadavg file

# uptime command

# but uptime seems to exists on all unix

my $info = 'uptime';



###############################################################################

sub read_load() {

	my ( $load1, $load5, $load15 ) = ( 'U', 'U', 'U' );



	my $r_tab = read_pipe($info);

	foreach ( @{$r_tab} ) {

		s/,//g;

		if (m/load averages?: (.*)/) {

			( $load1, $load5, $load15 ) = split_awk($1);

			last;

		}

	}

	return ( $load1, $load5, $load15 );

}

###############################################################################



my %config;

read_file_cached( 'config', \%config );

my %codes = action_load( \%config );



my @t_load = read_load();



#return unless (@t_load);



my %h_load = (

	load1  => $t_load[0],

	load5  => $t_load[1],

	load15 => $t_load[2],

);



#foreach my $elem (keys %h_load) {

#	debug( "$elem -> $h_load{$elem}");

#}



my $pre      = $config{'pre'};

my $load_num = 1;

while ( exists $config{ $pre . $load_num } ) {

	my @tab = split /,/, $config{ $pre . $load_num };



	my $real_load_num = $tab[0];

	my $load          = $tab[1];

	my $load_name     = $tab[2];

	my $runstop       = $tab[4];



	#debug( "load = $load");



	my $total = 'U';



	if ( is_param_runstop($runstop) ) {

		if ( exists $h_load{$load} ) {

			$total = $h_load{$load};

		}

		else {

			warning("load : can not find $load value");

		}

		debug("load $load ($load_name $real_load_num): total=$total");

		action_param( $load, $total, \%codes );

	}

	else {

		debug("aquisition for $load stopped");

	}



	my $rrdbase = $real_load_num . '.rrd';

	RRDs::update( $rrdbase, "N:$total" );

	my $ERR = RRDs::error();

	warning("ERROR while updating $rrdbase: $ERR") if $ERR;



	$load_num++;

}