File Coverage

blib/lib/Zabbix/Check.pm

Criterion	Covered	Total	%
statement	46	86	53.4
branch	0	10	0.0
condition	0	3	0.0
subroutine	15	19	78.9
pod	0	3	0.0
total	61	121	50.4

package Zabbix::Check;
=head1 NAME

Zabbix::Check - System and service checks for Zabbix

=head1 VERSION

version 1.10

=head1 SYNOPSIS

System and service checks for Zabbix

	UserParameter=cpan.zabbix.check.version,/usr/bin/perl -MZabbix::Check -e_version

=head3 version

gets Zabbix::Check version

=head2 Disk

Zabbix check for disk

	UserParameter=cpan.zabbix.check.disk.discovery,/usr/bin/perl -MZabbix::Check::Disk -e_discovery
	UserParameter=cpan.zabbix.check.disk.bps[*],/usr/bin/perl -MZabbix::Check::Disk -e_bps -- $1 $2
	UserParameter=cpan.zabbix.check.disk.iops[*],/usr/bin/perl -MZabbix::Check::Disk -e_iops -- $1 $2
	UserParameter=cpan.zabbix.check.disk.ioutil[*],/usr/bin/perl -MZabbix::Check::Disk -e_ioutil -- $1

=head3 discovery

discovers disks

=head3 bps $1 $2

gets disk I/O traffic in bytes per second

$1: I

$2: I

=head3 iops $1 $2

gets disk I/O transaction speed in transactions per second

$1: I

$2: I

=head3 ioutil $1 $2

gets disk I/O utilization in percentage

$1: I

=head2 Supervisor

Zabbix check for Supervisor service

	UserParameter=cpan.zabbix.check.supervisor.installed,/usr/bin/perl -MZabbix::Check::Supervisor -e_installed
	UserParameter=cpan.zabbix.check.supervisor.running,/usr/bin/perl -MZabbix::Check::Supervisor -e_running
	UserParameter=cpan.zabbix.check.supervisor.worker_discovery,/usr/bin/perl -MZabbix::Check::Supervisor -e_worker_discovery
	UserParameter=cpan.zabbix.check.supervisor.worker_status[*],/usr/bin/perl -MZabbix::Check::Supervisor -e_worker_status -- $1

=head3 installed

checks Supervisor is installed: 0 | 1

=head3 running

checks Supervisor is installed and running: 0 | 1 | 2 = not installed

=head3 worker_discovery

discovers Supervisor workers

=head3 worker_status $1

gets Supervisor worker status: RUNNING | STOPPED | ...

$1: I

=head2 RabbitMQ

Zabbix check for RabbitMQ service

	UserParameter=cpan.zabbix.check.rabbitmq.installed,/usr/bin/perl -MZabbix::Check::RabbitMQ -e_installed
	UserParameter=cpan.zabbix.check.rabbitmq.running,/usr/bin/perl -MZabbix::Check::RabbitMQ -e_running
	UserParameter=cpan.zabbix.check.rabbitmq.vhost_discovery[*],/usr/bin/perl -MZabbix::Check::RabbitMQ -e_vhost_discovery -- $1
	UserParameter=cpan.zabbix.check.rabbitmq.queue_discovery[*],/usr/bin/perl -MZabbix::Check::RabbitMQ -e_queue_discovery -- $1
	UserParameter=cpan.zabbix.check.rabbitmq.queue_status[*],/usr/bin/perl -MZabbix::Check::RabbitMQ -e_queue_status -- $1 $2 $3

=head3 installed

checks RabbitMQ is installed: 0 | 1

=head3 running

checks RabbitMQ is installed and running: 0 | 1 | 2 = not installed

=head3 vhost_discovery $1

discovers RabbitMQ vhosts

$1: I

=head3 queue_discovery $1

discovers RabbitMQ queues

$1: I

=head3 queue_status $1 $2 $3

gets RabbitMQ queue status using queue discovery cache

$1: I

$2: I

$3: I

=head2 Systemd

Zabbix check for Systemd services

	UserParameter=cpan.zabbix.check.systemd.installed,/usr/bin/perl -MZabbix::Check::Systemd -e_installed
	UserParameter=cpan.zabbix.check.systemd.system_status,/usr/bin/perl -MZabbix::Check::Systemd -e_system_status
	UserParameter=cpan.zabbix.check.systemd.service_discovery[*],/usr/bin/perl -MZabbix::Check::Systemd -e_service_discovery -- $1
	UserParameter=cpan.zabbix.check.systemd.service_status[*],/usr/bin/perl -MZabbix::Check::Systemd -e_service_status -- $1

=head3 installed

checks Systemd is installed: 0 | 1

=head3 system_status

gets Systemd system status: initializing | starting | running | degraded | maintenance | stopping | offline | unknown

=head3 service_discovery

discovers Systemd enabled services

$1: I

=head3 service_status $1

gets Systemd enabled service status: active | inactive | failed | unknown | ...

$1: I

=head2 Time

Zabbix check for system time

	UserParameter=cpan.zabbix.check.time.epoch,/usr/bin/perl -MZabbix::Check::Time -e_epoch
	UserParameter=cpan.zabbix.check.time.zone,/usr/bin/perl -MZabbix::Check::Time -e_zone
	UserParameter=cpan.zabbix.check.time.ntp_offset[*],/usr/bin/perl -MZabbix::Check::Time -e_ntp_offset -- $1 $2

=head3 epoch

gets system time epoch in seconds

=head3 zone

gets system time zone, eg: +0200

=head3 ntp_offset $1 $2

gets system time difference by NTP server

$1: I

$2: I

=cut
use strict;
use warnings;
no warnings qw(qw utf8);
use v5.14;
use utf8;
use Config;
use Switch;
use FindBin;
use Cwd;
use File::Basename;
use File::Slurp;
use JSON;
use Net::NTP;
use Lazy::Utils;


BEGIN
{
	require Exporter;
	# set the version for version checking
	our $VERSION     = '1.10';
	# Inherit from Exporter to export functions and variables
	our @ISA         = qw(Exporter);
	# Functions and variables which are exported by default
	our @EXPORT      = qw(zbxEncode zbxDecode printDiscovery _version);
	# Functions and variables which can be optionally exported
	our @EXPORT_OK   = qw();
}


our @zbxSpecials = qw(\ ' " ` * ? [ ] { } ~ $ ! & ; ( ) < > | # @);


sub zbxEncode
{
	my $result = "";
	my ($str) = @_;
	return $result unless $str;
	for (my $i = 0; $i < length $str; $i++)
	{
		my $chr = substr $str, $i, 1;
		if (not $chr =~ /[ -~]/g or grep ($_ eq $chr, (@zbxSpecials, '%', ',')))
		{
			$result .= uc sprintf("%%%x", ord($chr));
		} else
		{
			$result .= $chr;
		}
	}
	return $result;
}

sub zbxDecode
{
	my $result = "";
	my ($str) = @_;
	return $result unless $str;
	my ($i, $len) = (0, length $str);
	while ($i < $len)
	{
		my $chr = substr $str, $i, 1;
		if ($chr eq '%')
		{
			return $result if $len-$i-1 < 2;
			$result .= chr(hex(substr($str, $i+1, 2)));
			$i += 2;
		} else
		{
			$result .= $chr;
		}
		$i++;
	}
	return $result;
}

sub printDiscovery
{
	my @items = @_;
	my $discovery = {
		data => [
			map({
				my $item = $_;
				my %newitem = map({
					my $key = $_;
					my $val = $item->{$key};
					my $newkey = zbxEncode($key);
					$newkey = uc("{#$newkey}");
					my $newval = zbxEncode($val);
					$newkey => $newval;
				} keys(%$item));
				\%newitem;
			} @items),
		],
	};
	my $result = to_json($discovery, {pretty => 1});
	print $result;
	return $result;
}

sub _version
{
	my $result = "";
	$result = $Zabbix::Check::VERSION;
	print $result;
	return $result;
}


my $osname = $Config{osname};
warn "OS '$osname' is not supported" unless $osname eq 'linux';

1;
__END__