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# -*-Perl-*-
# instances allowed: one
# (single instance modules would be silly to use more than one of
# anyway, so we use package local storage. This is faster and places
# less artificial load on the machine than doing everything through
# the object hash)
use Tk;
package MGMmodule::diskuse;
use vars qw($xpath $graph $widget $fs $num @data @labels);
sub module_init{
my$this=shift;
my$toplevel=$this->{"toplevel"};
my$xclass=$this->{"xclass"};
# how many filesystems?
$this->read_proc;
unless ($fs>0){
$toplevel->optionAdd("$xclass*active",'false',21);
}
$toplevel->optionAdd("$xclass.order",100,21);
$this;
}
sub module_instance{
my$this=shift;
my$toplevel=$this->{"toplevel"};
return undef if(defined($xpath));
$xpath=$this->{"xpath"};
# modify defaults
$toplevel->optionAdd("$xpath*scalerefresh",30000,21); # slower
$this->read_proc;
undef@labels;
$num=0;
for(my$i=0;$i<$fs;$i++){
my$label=shift @data;
push @labels, ($label);
my$cap=shift @data;
my($adj,$mult)=MGM::Graph::scalemod($cap*10);
$adj=int($adj+.5)/10;
# modify the label (if needed)
$toplevel->optionAdd("$xpath.bar.$i.label", "$label $adj$mult",22);
shift @data;
$num++;
}
$toplevel->optionAdd("$xpath.scalewidadj", 80*$fs,21); # narrower
$toplevel->optionAdd("$xpath.bar*litbackground", "#e8d088",21);
my($minx,$miny)=&MGM::Graph::calcxysize($this,100,'% used',$fs);
$toplevel->optionAdd("$xpath.minx", $minx,21);
$toplevel->optionAdd("$xpath.miny", $miny,21);
$this;
}
sub module_run{
my$this=shift;
$graph=MGM::Graph->new($this,num=>$fs,
prompt=>'% used',fixed=>1,
rangesetting=>100,rangecurrent=>100);
$widget=$graph->{"widget"};
$this->module_update;
$widget;
}
sub read_proc{
my$output=qx{'df' '-k'};
my@temp=split "\n",$output;
undef @data;
$fs=0;
if($temp[0]=~m/Filesystem/){
shift @temp;
while(defined(my$line=shift @temp)){
if($line=~m/^\S+\s+(\d+)\s+\d+\s+\d+\s+(\d+)\%\s+(\S+)/){
# is this a label we want to display? Filter /proc and AFS
# for example...
next if($3=~m/^\/?afs/);
next if($3=~m/^\/?proc/);
next if($3=~m/^\/?kern/);
$fs++;
push @data, ($3,$1*1024,$2);
}
}
}
}
sub module_update{
my$this=shift;
$this->read_proc;
my@adj;
my$i=0;
while($#data>0){
return &reconfig if(!defined($labels[$i]));
return &reconfig if(shift(@data) ne $labels[$i]);
shift @data;
push @adj, (shift @data);
$i++;
}
$graph->set(@adj);
&reconfig if($i!=$num);
}
sub reconfig{
&main::reinstance() if($widget->optionGet("reconfig","") eq 'true');
}
sub destroy{
undef $xpath;
}
bless {};
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