mirror of https://github.com/nextcloud/bookmarks
161 lines
3.4 KiB
PHP
161 lines
3.4 KiB
PHP
<?php
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/*
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* Copyright (c) 2020-2024. The Nextcloud Bookmarks contributors.
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*
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* This file is licensed under the Affero General Public License version 3 or later. See the COPYING file.
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*/
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namespace OCA\Bookmarks\Service;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\Files\IAppData;
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use OCP\Files\NotFoundException;
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use OCP\Files\NotPermittedException;
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use OCP\Files\SimpleFS\ISimpleFolder;
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use OCP\ICache;
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class FileCache implements ICache {
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public const TIMEOUT = 60 * 60 * 24 * 30 * 2; // two months
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protected $storage;
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/**
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* @var ITimeFactory
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*/
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private $timeFactory;
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/**
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* @var IAppData
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*/
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private $appData;
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public function __construct(IAppData $appData, ITimeFactory $timeFactory) {
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$this->appData = $appData;
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$this->timeFactory = $timeFactory;
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}
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public static function isAvailable(): bool {
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return true;
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}
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/**
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* @return ISimpleFolder
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* @throws NotPermittedException
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*/
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private function getStorage(): ISimpleFolder {
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if ($this->storage !== null) {
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return $this->storage;
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}
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try {
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$this->storage = $this->appData->getFolder('cache');
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} catch (NotFoundException $e) {
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// noop
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}
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if ($this->storage === null || !$this->storage->fileExists('/')) {
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$this->storage = $this->appData->newFolder('cache');
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}
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if (!$this->storage->fileExists('CACHEDIR.TAG')) {
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try {
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$this->storage->newFile('CACHEDIR.TAG',
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'Signature: 8a477f597d28d172789f06886806bc55' . "\r\n" .
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'# This file is a cache directory tag created by the nextcloud bookmarks app.' . "\r\n" .
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'# For information about cache directory tags, see:' . "\r\n" .
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'# http://www.brynosaurus.com/cachedir/)' . "\r\n"
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);
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} catch (NotPermittedException $e) {
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// No op
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}
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}
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return $this->storage;
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}
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/**
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* @param string $key
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* @return mixed|null
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*/
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public function get($key) {
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$result = null;
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try {
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$result = $this->getStorage()->getFile($key)->getContent();
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} catch (\Exception $e) {
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// noop
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}
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return $result;
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}
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/**
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* Returns the size of the stored/cached data
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*
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* @param string $key
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* @return int|float
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* @throws NotFoundException|NotPermittedException
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*/
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public function size(string $key) {
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$result = 0;
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if ($this->hasKey($key)) {
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$result = $this->getStorage()->getFile($key)->getSize();
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}
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return $result;
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}
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/**
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* @param string $key
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* @param mixed $value
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* @param int $ttl
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* @return bool
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*/
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public function set($key, $value, $ttl = 0) {
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try {
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$this->getStorage()->newFile($key, $value);
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} catch (NotPermittedException $e) {
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return false;
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}
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return true;
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}
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/**
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* @param string $key
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* @return bool
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*/
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public function hasKey($key) {
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if ($this->getStorage()->fileExists($key)) {
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return true;
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}
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return false;
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}
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/**
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* @param string $key
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* @return bool
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* @throws NotFoundException
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* @throws NotPermittedException
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*/
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public function remove($key) {
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return (boolean) $this->getStorage()->getFile($key)->delete();
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}
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/**
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* @param string $prefix
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* @return void
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* @throws NotPermittedException
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*/
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public function clear($prefix = '') {
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foreach ($this->getStorage()->getDirectoryListing() as $file) {
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$file->delete();
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}
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}
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/**
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* Runs GC
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*
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* @throws NotPermittedException
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*/
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public function gc(): void {
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foreach ($this->getStorage()->getDirectoryListing() as $file) {
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if ($this->timeFactory->getTime() - self::TIMEOUT > $file->getMTime()) {
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$file->delete();
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}
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}
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}
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}
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