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103 lines
2.6 KiB
103 lines
2.6 KiB
<?php
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// (c) Copyright 2002-2019 by authors of the Tiki Wiki CMS Groupware Project
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//
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// All Rights Reserved. See copyright.txt for details and a complete list of authors.
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// Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See license.txt for details.
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// $Id$
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/**
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* Class CacheLibRedis
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*
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* Requires PHP-Redis
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*/
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class CacheLibRedis
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{
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private $redis;
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public function __construct()
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{
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global $prefs;
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if (empty($this->redis)) {
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$this->redis = new Redis();
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$success = $this->redis->pconnect($prefs["redis_host"], $prefs["redis_port"], $prefs["redis_timeout"]);
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if (! $success) {
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throw new Exception('Unable to connect to Redis.');
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}
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if ($prefs['redis_prefix']) {
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// This option automatically prefixes ALL keys provided as input to Redis
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$this->redis->setOption(Redis::OPT_PREFIX, $prefs['redis_prefix']);
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}
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}
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}
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public function __destruct()
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{
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$this->redis->close();
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}
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private function getKey($key, $type)
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{
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$key = $type . md5($key);
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return $key;
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}
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private function findKeys($pattern)
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{
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global $prefs;
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$keys = $this->redis->keys($pattern);
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if ($prefs['redis_prefix']) {
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// Need to strip prefix as it will be re-added
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$keys = substr_replace($keys, '', 0, strlen($prefs['redis_prefix']));
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}
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return $keys;
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}
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public function cacheItem($key, $data, $type = '')
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{
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global $prefs;
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$key = $this->getKey($key, $type);
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if ($prefs['redis_expiry']) {
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return $this->redis->setEx($key, $prefs['redis_expiry'], $data);
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} else {
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return $this->redis->set($key, $data);
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}
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}
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public function isCached($key, $type = '')
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{
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$key = $this->getKey($key, $type);
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return $this->redis->exists($key);
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}
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public function getCached($key, $type = '', $lastModif = false)
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{
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$key = $this->getKey($key, $type);
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return $this->redis->get($key);
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}
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public function invalidate($key, $type = '')
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{
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$key = $this->getKey($key, $type);
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return $this->redis->del([$key]);
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}
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public function empty_type_cache($type)
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{
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$keys = $this->findKeys($type . '*');
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return $this->redis->del($keys);
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}
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public function flush()
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{
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global $prefs;
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if ($prefs['redis_prefix']) {
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$keys = $this->findKeys('*');
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$this->redis->del($keys);
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} else {
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$this->redis->flushAll();
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}
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return;
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}
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}
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