controller.php

<?php
 
namespace Bitrix\Rest\Configuration\DataProvider;
 
use Bitrix\Main\SystemException;
use Bitrix\Rest\Configuration\DataProvider\Disk;
use Bitrix\Rest\Configuration\DataProvider\IO;
 
class Controller
{
    public const CODE_DISK = 'disk';
    public const CODE_IO = 'io';
    private const ITEM_LIST = [
        self::CODE_DISK => Disk\Base::class,
        self::CODE_IO => IO\Base::class,
    ];
 
    private $errorList = [];
 
    private static $instance;
 
    public static function getInstance(): Controller
    {
        if (self::$instance === null)
        {
            self::$instance = new Controller();
        }
 
        return self::$instance;
    }
 
    public function get(string $code, array $setting = []): ?ProviderBase
    {
        $result = null;
 
        $class = self::ITEM_LIST[$code];
        if ($class)
        {
            $result = $this->getProvider($class, $setting);
        }
 
        return $result;
    }
 
    private function getProvider(string $class, array $setting = []): ?ProviderBase
    {
        $result = null;
        if ($class && class_exists($class))
        {
            $this->resetErrors();
            try
            {
                $object = new $class($setting);
                if ($object instanceof ProviderBase)
                {
                    $result = $object;
                }
            }
            catch (SystemException $error)
            {
                $this->setError($error->getCode(), $error->getMessage());
            }
        }
 
        return $result;
    }
 
    private function __construct()
    {
    }
 
    private function __clone()
    {
    }
 
    private function setError($code, $message): void
    {
        $this->errorList[$code] = $message;
    }
 
    private function resetErrors(): bool
    {
        $this->errorList = [];
 
        return true;
    }
 
    public function listError(): array
    {
        return $this->errorList;
    }
}