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contrib-munin/plugins/weather/wfrog

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2010-10-13 12:15:28 +02:00
#!/usr/bin/perl -w
# Author: William Viker <william.viker@gmail.com>
# Version: 0.1
# Non-members may check out a read-only working copy anonymously over HTTP.
# $ svn checkout http://wfrogmunin.googlecode.com/svn/trunk/ wfrogmunin-read-only
# TODO:
# * Wait a couple of hours to see if this actually works.
# * Add proper data labels for the different values possible
# * more..
use strict;
use Data::Dumper;
# INSTRUCTIONS
#
# 1. Install wfrog, get it up running with your weather station
# 2. Locate your wfrog.csv file (wfrog creates after 10 mins)
# 3. cd /etc/munin/plugins/
# 4. ln -s /usr/share/munin/plugins/wfrog wfrog_temp
# 4. ln -s /usr/share/munin/plugins/wfrog wfrog_pressure
# 5. etc..
# 6. reload munin-node ;-)
# In case you need to change this.
my %CONFIG = (
'wfrogcsv' => '/var/lib/wfrog/wfrog.csv',
);
my $interesting;
if ($0 =~ m#wfrog_(\w+)#) {
$interesting = $1;
}
else {
print STDERR "Symlink the wfrog plugin file to wfrog_something, like wfrog_temperature, etc." . "\n";
exit 1;
}
if (defined $ARGV[0] && $ARGV[0] eq 'autoconf') {
print "yes\n";
exit 0;
}
open FILE, "<", $CONFIG{'wfrogcsv'};
my $header = <FILE>;
seek( FILE, -300, 2 );
my @line = readline FILE;
$header =~ s/[\r\n]//gs; # bah @ csv
$line[-1] =~ s/[\r\n]//gs; # --- " ---
my @Data = split /,/, $line[-1];
my @Keys = split /,/, $header;
my $GotKeyName;
my $GotKeyData;
my $cpos = 0;
for (@Keys) {
if ($_ eq $interesting) {
$GotKeyName = $_;
if (defined $Data[$cpos]) {
$GotKeyData = $Data[$cpos];
}
}
$cpos++;
}
unless (defined $GotKeyName) {
print STDERR "Could not find any data on '$interesting'. Does the file contain any data?\n";
exit 1;
}
my $graph_name = $GotKeyName;
$graph_name =~ s/[^a-z]//gi;
if (defined $ARGV[0] && $ARGV[0] eq 'config') {
print "graph_title WFrog $GotKeyName\n"
. "graph_args --base 1000 -l 0\n"
. "graph_vlabel Value\n"
. "graph_scale yes\n"
. "graph_category sensors\n"
# . "graph_printf %3.0lf\n"
. "$graph_name.label $GotKeyName\n"
. "$graph_name.draw AREASTACK\n";
exit 0;
}
print "$graph_name.value $GotKeyData\n";