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Lars Strand 2006-12-02 17:27:59 +01:00 • committed by Steve Schnepp
parent d3ae4577d7
commit aedb2f4b7b
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plugins/other/temperature_ Executable file
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#!/usr/bin/perl -w
#
# Copyright (C) 2006 Lars Strand
#
# Plugin to fetch temperature from weather.noaa.gov
#
# Parameters supported:
#
# config
# autoconf
#
# Magic markers:
#%# family=auto
#%# capabilities=autoconf
use strict;
my $usehum = $ENV{humidity} || undef; # set to "yes" to enable humidity
my $wcode = $ENV{wcode} || "ENGM"; # Find areacode here http://weather.noaa.gov/
my $unit = $ENV{unit} || "C"; # "C" = Celsius, "F" = Fahrenheit
my $proxy = $ENV{proxy} || undef; # Example: "http://proxy.foo.bar:8080/"
my $ret = undef;
if (! eval "require LWP::UserAgent;") {
$ret = "LWP::UserAgent not found";
}
if (defined $ARGV[0] and $ARGV[0] eq "autoconf") {
if (defined $ret) {
print "no ($ret)\n";
exit 1;
} else {
print "yes\n";
exit 0;
}
}
# Extract weather-code from filename. Example: weather_CODE
if ($0 =~ /^(?:|.*\/)temperature_([^_]+)$/) {
$wcode = $1;
}
my $datasource = "http://weather.noaa.gov/pub/data/observations/metar/decoded/$wcode.TXT";
my $ua = LWP::UserAgent->new(timeout => 30);
$ua->agent('Munin');
# Use proxy, if defined.
if (defined $proxy) {
$ua->proxy(['http'], $proxy);
}
my $response = $ua->request(HTTP::Request->new('GET',$datasource));
if (defined $ARGV[0] and $ARGV[0] eq "config") {
if ($response->content =~ /^((.*?),.*\)).*\n/) {
print "graph_title Temperature at $2\n";
} else {
print "graph_title Temperature at locationcode $wcode\n";
}
if ($unit =~ /F/) {
print "graph_vlabel temp in F\n";
} else {
print "graph_vlabel temp in C\n";
}
print "graph_args --base 1000 -l 0\n";
print "graph_category sensors\n";
print "graph_info Temperatures at $1 (fetched from weather.nooa.gov).\n";
print "temperature.label temperature\n";
if (defined $usehum) {
print "humidity.label humidity\n";
print "humidity.info Humidity in %.\n";
}
exit 0;
}
if ($response->content =~ /Temperature:\s*(.*)\s+F\s*\(\s*(.*)\s+C/) {
if ($unit =~ /F/) {
print "temperature.value $1\n";
} else {
print "temperature.value $2\n";
}
} else {
print "temperature.value U\n";
}
if (defined $usehum) {
if ($response->content =~ /Relative Humidity:\s*(\d+)\%.*/) {
print "humidity.value $1\n";
}
}