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-rw-r--r--lib/private/memcache/memcached.php76
1 files changed, 76 insertions, 0 deletions
diff --git a/lib/private/memcache/memcached.php b/lib/private/memcache/memcached.php
new file mode 100644
index 00000000000..978e6c2eff1
--- /dev/null
+++ b/lib/private/memcache/memcached.php
@@ -0,0 +1,76 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Memcache;
+
+class Memcached extends Cache {
+ /**
+ * @var \Memcached $cache
+ */
+ private static $cache = null;
+
+ public function __construct($prefix = '') {
+ parent::__construct($prefix);
+ if (is_null(self::$cache)) {
+ self::$cache = new \Memcached();
+ list($host, $port) = \OC_Config::getValue('memcached_server', array('localhost', 11211));
+ self::$cache->addServer($host, $port);
+ }
+ }
+
+ /**
+ * entries in XCache gets namespaced to prevent collisions between owncloud instances and users
+ */
+ protected function getNameSpace() {
+ return $this->prefix;
+ }
+
+ public function get($key) {
+ $result = self::$cache->get($this->getNamespace() . $key);
+ if ($result === false and self::$cache->getResultCode() == \Memcached::RES_NOTFOUND) {
+ return null;
+ } else {
+ return $result;
+ }
+ }
+
+ public function set($key, $value, $ttl = 0) {
+ if ($ttl > 0) {
+ return self::$cache->set($this->getNamespace() . $key, $value, $ttl);
+ } else {
+ return self::$cache->set($this->getNamespace() . $key, $value);
+ }
+ }
+
+ public function hasKey($key) {
+ self::$cache->get($this->getNamespace() . $key);
+ return self::$cache->getResultCode() !== \Memcached::RES_NOTFOUND;
+ }
+
+ public function remove($key) {
+ return self::$cache->delete($this->getNamespace() . $key);
+ }
+
+ public function clear($prefix = '') {
+ $prefix = $this->getNamespace() . $prefix;
+ $allKeys = self::$cache->getAllKeys();
+ $keys = array();
+ $prefixLength = strlen($prefix);
+ foreach ($allKeys as $key) {
+ if (substr($key, 0, $prefixLength) === $prefix) {
+ $keys[] = $key;
+ }
+ }
+ self::$cache->deleteMulti($keys);
+ return true;
+ }
+
+ static public function isAvailable() {
+ return extension_loaded('memcached');
+ }
+}