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54 lines
1.2 KiB
PHP
54 lines
1.2 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OC\Files\ObjectStore;
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use OCP\IConfig;
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use OCP\IUser;
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/**
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* Class Mapper
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*
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* @package OC\Files\ObjectStore
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*
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* Map a user to a bucket.
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*/
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class Mapper {
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/** @var IUser */
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private $user;
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/** @var IConfig */
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private $config;
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/**
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* Mapper constructor.
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*
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* @param IUser $user
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* @param IConfig $config
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*/
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public function __construct(IUser $user, IConfig $config) {
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$this->user = $user;
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$this->config = $config;
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}
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/**
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* @param int $numBuckets
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* @return string
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*/
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public function getBucket($numBuckets = 64) {
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// Get the bucket config and shift if provided.
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// Allow us to prevent writing in old filled buckets
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$config = $this->config->getSystemValue('objectstore_multibucket');
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$minBucket = is_array($config) && isset($config['arguments']['min_bucket'])
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? (int)$config['arguments']['min_bucket']
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: 0;
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$hash = md5($this->user->getUID());
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$num = hexdec(substr($hash, 0, 4));
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return (string)(($num % ($numBuckets - $minBucket)) + $minBucket);
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}
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}
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