Topic: Short monitoring script for pool (Read 1010 times)

#!/usr/bin/perl
# This program is free software. It comes without any warranty, to
# the extent permitted by applicable law. You can redistribute it
# and/or modify it under the terms of the Do What The Fuck You Want
# To Public License, Version 2, as published by Sam Hocevar. See
# http://sam.zoy.org/wtfpl/COPYING for more details.

# sudo aptitude install libjson-perl sendemail

use strict;
use Data::Dumper;
use JSON;

my $request = 'http://www.btcguild.com/api.php?api_key=xxxxxxxxxxxxxx';
my $email   = '[email protected]';
my $from_email = '[email protected]';
my $smtp_server = 'smtp.fastmail.fm';
my $smtp_user = '[email protected]';
my $smtp_pass = 'XXXXXXXX';
my $sendemail = "sendemail -f $from_email -t $email -s $smtp_server -xu $smtp_user -o message-format=raw -xp $smtp_pass -m";
my $worker_prefix = 'xxx';
my $filename = '/tmp/.guild_timeouts';
my $dead_thres = 150.0;

my $h_timeout = {};

sub main {
	my @lines = ();

	read_timeouts();

	sysexec('localhost', "wget --output-document=- $request 2>/dev/null", \@lines);
	return 1 if ($lines[0] =~ /Failed to connect to/);
	my $json = JSON->new->allow_nonref;
	my $guild = $json->decode($lines[0]);
	print_out("\$guild: $guild");

	my $workers = $guild->{'workers'};
	my $total = 0.0;
	my @dead;
	my @choped_dead;
	for my $name (sort keys (%$workers)) {
		my $worker_name = $workers->{$name}->{worker_name};
		my $hash_rate   = $workers->{$name}->{hash_rate};
		print "$workers->{$name}->{worker_name}: $workers->{$name}->{hash_rate}\n";
		if ($hash_rate < $dead_thres) {
			push (@dead, $worker_name);
		} else {
			update_flag($worker_name, 1);
		}
		$total += $hash_rate;
	}
	print "Total: $total\n";

	my $must_send = 0;
	for my $name (@dead) {
		my $choped = $name; $choped =~ s/$worker_prefix//g;
		push @choped_dead, $choped;
		if (down_flag($name)) {
			$must_send = 1;
			update_flag($name, 0);
		}
	}
	if ($must_send) {
		@lines = ();
		print_log("Will send: @dead");
		sysexec('localhost', $sendemail . " '@choped_dead'", \@lines);
	}
	write_timeouts();
	print "\n";
}

sub update_flag {
	my $worker = shift;
	my $flag = shift;

	$h_timeout->{$worker} = $flag;
}

sub down_flag {
	my $worker = shift;

	my $t = exists $h_timeout->{$worker} ? $h_timeout->{$worker} : 1;
	return $t;
}

sub read_timeouts {
	my $f;
	local $/=undef;
	open($f, '<', $filename) or return;
	my $txt = <$f>;
	eval $txt;
	close $f;
}

sub write_timeouts {
	my $f;
	open($f, '>', $filename) or return;
	my $txt = Data::Dumper->Dump([$h_timeout], ['$h_timeout']);
	print $f $txt;
	close $f;
}

my $local_hostname = 'localhost';
sub sysexec {
	my ($host, $cmd, $lines) = @_;
	my $aaa;
	my $rc = 1;
	local *KID;

	return 1 if (!defined $host || $host eq '');
	if ($host ne $local_hostname) {
		$cmd = "ssh -o PreferredAuthentications=publickey $host -t '$cmd' 2>/dev/null";
	}
	my $pid = open(KID, "$cmd |");
	if ($pid) { # parent
		while (defined($aaa = )) {
			push(@$lines, $aaa);
		}
		close(KID);
		$rc = ($?>> 8);
	} else {
		print_log("FATAL: Could not execute command '$cmd'");
		return 1;
	}
	return $rc;
}

sub print_log {
	my ($txt) = @_;
	print $txt . "\n";
}

&main();

1;