Zabbix

<?php

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

​

/**

 * Base controller for the "Latest data" page and the "Latest data" asynchronous refresh page.

 */

abstract class CControllerLatest extends CController {

​

    // Filter idx prefix.

    public const FILTER_IDX = 'web.monitoring.latest';

​

    // Number of tag value rows allowed to be included in subfilter.

    public const SUBFILTERS_TAG_VALUE_ROWS = 10;

​

    // Number of tag value rows when tag values subfilter is expanded.

    private const SUBFILTERS_TAG_VALUE_ROWS_EXPANDED = 200;

​

    // Filter fields default values.

    public const FILTER_FIELDS_DEFAULT = [

        'groupids' => [],

        'hostids' => [],

        'name' => '',

        'evaltype' => TAG_EVAL_TYPE_AND_OR,

        'tags' => [],

        'state' => -1,

        'show_tags' => SHOW_TAGS_3,

        'tag_name_format' => TAG_NAME_FULL,

        'tag_priority' => '',

        'show_details' => 0,

        'page' => null,

        'sort' => 'name',

        'sortorder' => ZBX_SORT_UP,

        'subfilter_hostids' => [],

        'subfilter_tagnames' => [],

        'subfilter_tags' => [],

        'subfilter_state' => [],

        'subfilter_data' => []

    ];

​

    // Mandatory filter fields.

    public const MANDATORY_FILTER_FIELDS = ['groupids', 'hostids', 'name', 'tags', 'state'];

​

    /**

     * Prepare the latest data based on the given filter and sorting options.

     *

     * @param array  $filter                       Item filter options.

     * @param array  $filter['groupids']           Filter items by host groups.

     * @param array  $filter['hostids']            Filter items by hosts.

     * @param string $filter['name']               Filter items by name.

     * @param int    $filter['evaltype']           Filter evaltype.

     * @param array  $filter['tags']               Filter tags.

     * @param string $filter['tags'][]['tag']

     * @param string $filter['tags'][]['value']

     * @param int    $filter['tags'][]['operator']

     * @param int    $filter['state']              Filter state.

     * @param string $sort_field                   Sorting field.

     * @param string $sort_order                   Sorting order.

     *

     * @return array

     */

    protected function prepareData(array $filter, $sort_field, $sort_order) {

        // Select groups for subsequent selection of hosts and items.

        $groupids = $filter['groupids'] ? getSubGroups($filter['groupids']) : null;

​

        // Select hosts for subsequent selection of items.

        $hosts = API::Host()->get([

            'output' => ['hostid', 'name', 'status', 'maintenanceid', 'maintenance_status', 'maintenance_type'],

            'groupids' => $groupids,

            'hostids' => $filter['hostids'] ?: null,

            'preservekeys' => true

        ]);

​

        $search_limit = CSettingsHelper::get(CSettingsHelper::SEARCH_LIMIT);

        $select_items_cnt = 0;

        $select_items = [];

​

        foreach ($hosts as $hostid => $host) {

            if ($select_items_cnt > $search_limit) {