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contrib-munin/plugins/weather/temperatures

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2006-12-02 17:26:05 +01:00
#!/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;
# Find areacodes here http://weather.noaa.gov/
my @wcode = undef;
if (defined($ENV{wcode})) {
@wcode = split(' ', $ENV{wcode});
} else {
@wcode = ("ENGM", "ENBR", "ENVA", "ENTC");
}
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;
}
}
my $datasource = "http://weather.noaa.gov/pub/data/observations/metar/decoded/";
my $ua = LWP::UserAgent->new(timeout => 30);
$ua->agent('Munin');
# Use proxy, if defined.
if (defined($proxy)) {
$ua->proxy(['http'], $proxy);
}
if (defined $ARGV[0] and $ARGV[0] eq "config") {
print "graph_title Outside temperature\n";
print "graph_args --base 1000 -l 0\n";
print "graph_category sensors\n";
print "graph_info This graph shows temperatures fetched from weather.nooa.gov.\n";
if ($unit =~ /F/) {
print "graph_vlabel temp in F\n";
} else {
print "graph_vlabel temp in C\n";
}
for my $station (@wcode) {
my $url = "$datasource$station.TXT";
my $response = $ua->request(HTTP::Request->new('GET',$url));
# New York City, Central Park, NY, United States (KNYC) 40-47-00N 073-58-00W 48M
if ($response->content =~ /^((.*?),.*\)).*\n/) {
print "$station.label $2\n";
print "$station.info $1\n";
} else {
print "$station.label $station\n";
}
}
exit 0;
}
for my $station (@wcode) {
my $url = "$datasource$station.TXT";
my $response = $ua->request(HTTP::Request->new('GET',$url));
if ($response->content =~ /Temperature:\s*(.*)\s+F\s*\(\s*(.*)\s+C/) {
if ($unit =~ /F/) {
print "$station.value $1\n";
} else {
print "$station.value $2\n";
}
} else {
print "$station.value U\n";
}
}