librenms-librenms/app/Http/Controllers/Table/EventlogController.php

<?php
/**
 * EventlogController.php
 *
 * -Description-
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 *
 * @package    LibreNMS
 * @link       http://librenms.org
 * @copyright  2018 Tony Murray
 * @author     Tony Murray <murraytony@gmail.com>
 */

namespace App\Http\Controllers\Table;

use App\Models\Eventlog;
use Carbon\Carbon;
use LibreNMS\Config;
use LibreNMS\Util\Url;

class EventlogController extends TableController
{
    public function rules()
    {
        return [
            'device' => 'nullable|int',
            'eventtype' => 'nullable|string',
        ];
    }

    public function searchFields($request)
    {
        return ['message'];
    }

    protected function filterFields($request)
    {
        return [
            'device_id' => 'device',
            'type' => 'eventtype',
        ];
    }

    /**
     * Defines the base query for this resource
     *
     * @param \Illuminate\Http\Request $request
     * @return \Illuminate\Database\Eloquent\Builder|\Illuminate\Database\Query\Builder
     */
    public function baseQuery($request)
    {
        return Eventlog::hasAccess($request->user())->with('device');
    }

    public function formatItem($eventlog)
    {
        return [
            'datetime' => $this->formatDatetime($eventlog),
            'device_id' => $eventlog->device ? Url::deviceLink($eventlog->device, $eventlog->device->shortDisplayName()) : null,
            'type' => $this->formatType($eventlog),
            'message' => htmlspecialchars($eventlog->message),
            'username' => $eventlog->username ?: 'System',
        ];
    }

    private function formatType($eventlog)
    {
        if ($eventlog->type == 'interface') {
            if (is_numeric($eventlog->reference)) {
                $port = $eventlog->related;
                if (isset($port)) {
                    return '<b>' . Url::portLink($port, $port->getShortLabel()) . '</b>';
                }
            }
        }

        return $eventlog->type;
    }

    private function formatDatetime($eventlog)
    {
        $output = "<span class='alert-status ";
        $output .= $this->severityLabel($eventlog->severity);
        $output .= " eventlog-status'></span><span style='display:inline;'>";
        $output .= (new Carbon($eventlog->datetime))->format(Config::get('dateformat.compact'));
        $output .= "</span>";

        return $output;
    }

    /**
     * @param int $eventlog_severity
     * @return string $eventlog_severity_icon
     */
    private function severityLabel($eventlog_severity)
    {
        switch ($eventlog_severity) {
            case 1:
                return "label-success"; //OK
            case 2:
                return "label-info"; //Informational
            case 3:
                return "label-primary"; //Notice
            case 4:
                return "label-warning"; //Warning
            case 5:
                return "label-danger"; //Critical
            default:
                return "label-default"; //Unknown
        }
    } // end eventlog_severity
}