nextcloud/lib/private/Files/ObjectStore/Mapper.php

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<?php
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
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* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\Files\ObjectStore;
use OCP\IUser;
/**
* Class Mapper
*
* @package OC\Files\ObjectStore
*
* Map a user to a bucket.
*/
class Mapper {
/** @var IUser */
private $user;
/**
* Mapper constructor.
*
* @param IUser $user
*/
public function __construct(IUser $user) {
$this->user = $user;
}
/**
* @param int $numBuckets
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* @return string
*/
public function getBucket($numBuckets = 64) {
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$hash = md5($this->user->getUID());
$num = hexdec(substr($hash, 0, 4));
return (string)($num % $numBuckets);
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}
}