Zabbix

<?php declare(strict_types = 0);

/*

** 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.

**/

​

​

/**

 * Common methods for "charts.view" and "charts.view.json" actions.

 */

abstract class CControllerCharts extends CController {

    // Number of subfilter values per row.

    const SUBFILTERS_VALUES_PER_ROW = 100;

​

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

    const SUBFILTERS_TAG_VALUE_ROWS = 20;

​

    /**

     * Fetches all host graphs based on hostid and graph name or item name used in graph.

     *

     * @param array  $hostids  Limit returned graphs to these hosts.

     * @param string $name     Graphs or items in them should contain this string in their name.

     *

     * @return array

     */

    protected function getHostGraphs(array $hostids, string $name): array {

        $graphs = API::Graph()->get([

            'output' => ['graphid', 'name'],

            'hostids' => $hostids,

            'search' => $name !== '' ? ['name' => $name] : null,

            'selectItems' => ['itemid'],

            'preservekeys' => true

        ]);

​

        $graph_items = [];

        foreach ($graphs as $graph) {

            foreach ($graph['items'] as $item) {

                $graph_items[$item['itemid']] = $item;

            }

        }

​

        $filter_items = [];

        if ($name !== '') {

            $filter_items = API::Item()->get([

                'output' => ['itemid'],

                'hostids' => $hostids,

                'search' => ['name' => $name],

                'preservekeys' => true

            ]);

​

            if ($filter_items) {

                $graphs += API::Graph()->get([

                    'output' => ['graphid', 'name'],

                    'hostids' => $hostids,

                    'itemids' => array_keys($filter_items),

                    'selectItems' => ['itemid'],

                    'preservekeys' => true

                ]);

            }

        }

​

        $items = [];

        if ($graph_items || $filter_items) {

            $items = API::Item()->get([

                'output' => ['itemid', 'name'],

                'hostids' => $hostids,

                'itemids' => array_keys($graph_items + $filter_items),

                'selectTags' => ['tag', 'value'],

                'preservekeys' => true

            ]);

        }

​

        return $this->addTagsToGraphs($graphs, $items);

    }

​

    private function addTagsToGraphs(array $graphs, array $items): array {

        foreach ($graphs as &$graph) {