zhuravljov / yii2-queue-monitor

src/Env.php

<?php
/**
 * @link https://github.com/zhuravljov/yii2-queue-monitor
 * @copyright Copyright (c) 2017 Roman Zhuravlev
 * @license http://opensource.org/licenses/BSD-3-Clause
 */

namespace zhuravljov\yii\queue\monitor;

use Yii;
use yii\base\BaseObject;
use yii\caching\Cache;
use yii\db\Connection;
use yii\di\Instance;

/**
 * Class Env
 *
 * @author Roman Zhuravlev <zhuravljov@gmail.com>
 */
class Env extends BaseObject
{
    /**
     * @var Cache|array|string
     */
    public $cache = 'cache';
    /**
     * @var Connection|array|string
     */
    public $db = 'db';
    /**
     * @var string
     */
    public $pushTableName = '{{%queue_push}}';
    /**
     * @var string
     */
    public $execTableName = '{{%queue_exec}}';
    /**
     * @var string
     */
    public $workerTableName = '{{%queue_worker}}';
    /**
     * @var int
     */
    public $workerPingInterval = 15;

    /**
     * @return static
     */
    public static function ensure()
    {
        return Yii::$container->get(static::class);
    }

    /**
     * @inheritdoc
     */
    public function init()
    {
        parent::init();
        $this->cache = Instance::ensure($this->cache, Cache::class);
        $this->db = Instance::ensure($this->db, Connection::class);
    }

    /**
     * @return bool
     */
    public function canListenWorkerLoop()
    {
        return !!$this->workerPingInterval;
    }

    /**
     * @return string
     */
    public function getHost()
    {
        if ($this->db->driverName === 'mysql') {
            $host = $this->db
                ->createCommand('SELECT `HOST` FROM `information_schema`.`PROCESSLIST` WHERE `ID` = CONNECTION_ID()')
                ->queryScalar();
            return preg_replace('/:\d+$/', '', $host);
        }

        if ($this->db->driverName === 'pgsql') {
            return $this->db

The expression return $this->db->createCommand('SELECT inet_client_addr()')->queryScalar() could also return false which is incompatible with the documented return type string. Did you maybe forget to handle an error condition?

                ->createCommand('SELECT inet_client_addr()')
                ->queryScalar();
        }

        return '127.0.0.1'; // By default
    }
}