Zabbix

<?php declare(strict_types = 1);

/*

** Zabbix

** Copyright (C) 2001-2022 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

​

/**

 * Class containing information on history functions.

 */

final class CHistFunctionData {

​

    public const PERIOD_MODE_DEFAULT = 0;

    public const PERIOD_MODE_SEC = 1;

    public const PERIOD_MODE_SEC_ONLY = 2;

    public const PERIOD_MODE_NUM_ONLY = 3;

    public const PERIOD_MODE_TREND = 4;

​

    /**

     * Known history functions along with definition of parameters.

     *

     * @var array

     */

    private const PARAMETERS = [

        'avg' => [

            ['rules' => [['type' => 'query']]],

            ['rules' => [['type' => 'period', 'mode' => self::PERIOD_MODE_DEFAULT]]]

        ],

        'avg_foreach' => [

            ['rules' => [['type' => 'query']]],

            ['rules' => [['type' => 'period', 'mode' => self::PERIOD_MODE_SEC_ONLY]]]

        ],

        'bucket_percentile' => [

            ['rules' => [['type' => 'query']]],

            ['rules' => [['type' => 'period', 'mode' => self::PERIOD_MODE_SEC_ONLY]]],

            ['rules' => [

                ['type' => 'regexp', 'pattern' => '/^((\d+(\.\d{0,4})?)|(\.\d{1,4}))$/'],

                ['type' => 'number', 'min' => 0, 'max' => 100]

            ]]

        ],

        'bucket_rate_foreach' => [

            ['rules' => [['type' => 'query']]],

            ['rules' => [['type' => 'period', 'mode' => self::PERIOD_MODE_SEC_ONLY]]],

            ['rules' => [

                ['type' => 'regexp', 'pattern' => '/^\d+$/'],

                ['type' => 'number', 'min' => 1]

            ], 'required' => false]

        ],

        'change' => [