1<?php
2/*
3** Zabbix
4** Copyright (C) 2001-2021 Zabbix SIA
5**
6** This program is free software; you can redistribute it and/or modify
7** it under the terms of the GNU General Public License as published by
8** the Free Software Foundation; either version 2 of the License, or
9** (at your option) any later version.
10**
11** This program is distributed in the hope that it will be useful,
12** but WITHOUT ANY WARRANTY; without even the implied warranty of
13** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14** GNU General Public License for more details.
15**
16** You should have received a copy of the GNU General Public License
17** along with this program; if not, write to the Free Software
18** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
19**/
20
21
22/**
23 * Convert net.tcp.service to net.udp.service.
24 */
25class C20ItemKeyConverter extends CConverter {
26
27	/**
28	 * Item key parser.
29	 *
30	 * @var CItemKey
31	 */
32	protected $item_key_parser;
33
34	public function __construct() {
35		$this->item_key_parser = new CItemKey();
36	}
37
38	/**
39	 * Convert item key.
40	 *
41	 * @param string $value  Item key.
42	 *
43	 * @return string  Converted item key.
44	 */
45	public function convert($value) {
46		if ($this->item_key_parser->parse($value) != CParser::PARSE_SUCCESS) {
47			return $value;
48		}
49
50		$item_key = $this->item_key_parser->getKey();
51		if ($item_key !== 'net.tcp.service' && $item_key !== 'net.tcp.service.perf') {
52			return $value;
53		}
54
55		if ($this->item_key_parser->getParamsNum() == 0 || $this->item_key_parser->getParam(0) !== 'ntp') {
56			return $value;
57		}
58
59		return substr_replace($value, 'udp', 4, 3);
60	}
61}
62