101 lines
2.3 KiB
PHP
101 lines
2.3 KiB
PHP
<?php
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/**
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* Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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class OC_Cache_FileGlobal{
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static protected function getCacheDir() {
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$cache_dir = get_temp_dir().'/owncloud-'.OC_Util::getInstanceId().'/';
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if (!is_dir($cache_dir)) {
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mkdir($cache_dir);
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}
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return $cache_dir;
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}
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protected function fixKey($key) {
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return str_replace('/', '_', $key);
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}
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public function get($key) {
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$key = $this->fixKey($key);
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if ($this->hasKey($key)) {
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$cache_dir = self::getCacheDir();
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return file_get_contents($cache_dir.$key);
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}
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return null;
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}
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public function set($key, $value, $ttl=0) {
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$key = $this->fixKey($key);
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$cache_dir = self::getCacheDir();
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if ($cache_dir and file_put_contents($cache_dir.$key, $value)) {
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if ($ttl === 0) {
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$ttl = 86400; // 60*60*24
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}
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return touch($cache_dir.$key, time() + $ttl);
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}
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return false;
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}
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public function hasKey($key) {
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$key = $this->fixKey($key);
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$cache_dir = self::getCacheDir();
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if ($cache_dir && is_file($cache_dir.$key)) {
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$mtime = filemtime($cache_dir.$key);
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if ($mtime < time()) {
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unlink($cache_dir.$key);
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return false;
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}
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return true;
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}
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return false;
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}
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public function remove($key) {
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$cache_dir = self::getCacheDir();
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if(!$cache_dir) {
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return false;
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}
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$key = $this->fixKey($key);
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return unlink($cache_dir.$key);
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}
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public function clear($prefix='') {
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$cache_dir = self::getCacheDir();
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$prefix = $this->fixKey($prefix);
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if($cache_dir and is_dir($cache_dir)) {
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$dh=opendir($cache_dir);
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while($file=readdir($dh)) {
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if($file!='.' and $file!='..' and ($prefix==='' || strpos($file, $prefix) === 0)) {
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unlink($cache_dir.$file);
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}
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}
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}
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}
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static public function gc() {
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$last_run = OC_AppConfig::getValue('core', 'global_cache_gc_lastrun', 0);
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$now = time();
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if (($now - $last_run) < 300) {
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// only do cleanup every 5 minutes
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return;
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}
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OC_AppConfig::setValue('core', 'global_cache_gc_lastrun', $now);
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$cache_dir = self::getCacheDir();
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if($cache_dir and is_dir($cache_dir)) {
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$dh=opendir($cache_dir);
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while($file=readdir($dh)) {
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if($file!='.' and $file!='..') {
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$mtime = filemtime($cache_dir.$file);
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if ($mtime < $now) {
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unlink($cache_dir.$file);
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}
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}
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}
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}
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}
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}
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