Move \OC\Memcache to PSR-4

11 files changed, 0 insertions, 1430 deletions

diff --git a/lib/private/memcache/apc.php b/lib/private/memcache/apc.php
deleted file mode 100644
index 2354ad07749..00000000000
--- a/lib/private/memcache/apc.php
+++ /dev/null
@@ -1,135 +0,0 @@
-<?php
-/**
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Clark Tomlinson <fallen013@gmail.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Otto Sabart <ottosabart@seberm.com>
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcache;
-
-class APC extends Cache implements IMemcache {
-	use CASTrait {
-		cas as casEmulated;
-	}
-
-	use CADTrait;
-
-	public function get($key) {
-		$result = apc_fetch($this->getPrefix() . $key, $success);
-		if (!$success) {
-			return null;
-		}
-		return $result;
-	}
-
-	public function set($key, $value, $ttl = 0) {
-		return apc_store($this->getPrefix() . $key, $value, $ttl);
-	}
-
-	public function hasKey($key) {
-		return apc_exists($this->getPrefix() . $key);
-	}
-
-	public function remove($key) {
-		return apc_delete($this->getPrefix() . $key);
-	}
-
-	public function clear($prefix = '') {
-		$ns = $this->getPrefix() . $prefix;
-		$ns = preg_quote($ns, '/');
-		$iter = new \APCIterator('user', '/^' . $ns . '/', APC_ITER_KEY);
-		return apc_delete($iter);
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 */
-	public function add($key, $value, $ttl = 0) {
-		return apc_add($this->getPrefix() . $key, $value, $ttl);
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		$this->add($key, 0);
-		return apc_inc($this->getPrefix() . $key, $step);
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		return apc_dec($this->getPrefix() . $key, $step);
-	}
-
-	/**
-	 * Compare and set
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @param mixed $new
-	 * @return bool
-	 */
-	public function cas($key, $old, $new) {
-		// apc only does cas for ints
-		if (is_int($old) and is_int($new)) {
-			return apc_cas($this->getPrefix() . $key, $old, $new);
-		} else {
-			return $this->casEmulated($key, $old, $new);
-		}
-	}
-
-	static public function isAvailable() {
-		if (!extension_loaded('apc')) {
-			return false;
-		} elseif (!\OC::$server->getIniWrapper()->getBool('apc.enabled')) {
-			return false;
-		} elseif (!\OC::$server->getIniWrapper()->getBool('apc.enable_cli') && \OC::$CLI) {
-			return false;
-		} else {
-			return true;
-		}
-	}
-}
-
-if (!function_exists('apc_exists')) {
-	function apc_exists($keys) {
-		$result = false;
-		apc_fetch($keys, $result);
-		return $result;
-	}
-}
diff --git a/lib/private/memcache/apcu.php b/lib/private/memcache/apcu.php
deleted file mode 100644
index 350ce913ed8..00000000000
--- a/lib/private/memcache/apcu.php
+++ /dev/null
@@ -1,140 +0,0 @@
-<?php
-/**
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Clark Tomlinson <fallen013@gmail.com>
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcache;
-
-class APCu extends Cache implements IMemcache {
-	use CASTrait {
-		cas as casEmulated;
-	}
-
-	use CADTrait;
-
-	public function get($key) {
-		$result = apcu_fetch($this->getPrefix() . $key, $success);
-		if (!$success) {
-			return null;
-		}
-		return $result;
-	}
-
-	public function set($key, $value, $ttl = 0) {
-		return apcu_store($this->getPrefix() . $key, $value, $ttl);
-	}
-
-	public function hasKey($key) {
-		return apcu_exists($this->getPrefix() . $key);
-	}
-
-	public function remove($key) {
-		return apcu_delete($this->getPrefix() . $key);
-	}
-
-	public function clear($prefix = '') {
-		$ns = $this->getPrefix() . $prefix;
-		$ns = preg_quote($ns, '/');
-		if(class_exists('\APCIterator')) {
-			$iter = new \APCIterator('user', '/^' . $ns . '/', APC_ITER_KEY);
-		} else {
-			$iter = new \APCUIterator('/^' . $ns . '/', APC_ITER_KEY);
-		}
-		return apcu_delete($iter);
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 */
-	public function add($key, $value, $ttl = 0) {
-		return apcu_add($this->getPrefix() . $key, $value, $ttl);
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		$this->add($key, 0);
-		return apcu_inc($this->getPrefix() . $key, $step);
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		return apcu_dec($this->getPrefix() . $key, $step);
-	}
-
-	/**
-	 * Compare and set
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @param mixed $new
-	 * @return bool
-	 */
-	public function cas($key, $old, $new) {
-		// apc only does cas for ints
-		if (is_int($old) and is_int($new)) {
-			return apcu_cas($this->getPrefix() . $key, $old, $new);
-		} else {
-			return $this->casEmulated($key, $old, $new);
-		}
-	}
-
-	/**
-	 * @return bool
-	 */
-	static public function isAvailable() {
-		if (!extension_loaded('apcu')) {
-			return false;
-		} elseif (!\OC::$server->getIniWrapper()->getBool('apc.enabled')) {
-			return false;
-		} elseif (!\OC::$server->getIniWrapper()->getBool('apc.enable_cli') && \OC::$CLI) {
-			return false;
-		} elseif (
-				version_compare(phpversion('apc'), '4.0.6') === -1 &&
-				version_compare(phpversion('apcu'), '5.1.0') === -1
-		) {
-			return false;
-		} else {
-			return true;
-		}
-	}
-}
diff --git a/lib/private/memcache/arraycache.php b/lib/private/memcache/arraycache.php
deleted file mode 100644
index 837f888a307..00000000000
--- a/lib/private/memcache/arraycache.php
+++ /dev/null
@@ -1,158 +0,0 @@
-<?php
-/**
- * @author Joas Schilling <nickvergessen@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcache;
-
-class ArrayCache extends Cache implements IMemcache {
-	/** @var array Array with the cached data */
-	protected $cachedData = array();
-
-	use CADTrait;
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function get($key) {
-		if ($this->hasKey($key)) {
-			return $this->cachedData[$key];
-		}
-		return null;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function set($key, $value, $ttl = 0) {
-		$this->cachedData[$key] = $value;
-		return true;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function hasKey($key) {
-		return isset($this->cachedData[$key]);
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function remove($key) {
-		unset($this->cachedData[$key]);
-		return true;
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	public function clear($prefix = '') {
-		if ($prefix === '') {
-			$this->cachedData = [];
-			return true;
-		}
-
-		foreach ($this->cachedData as $key => $value) {
-			if (strpos($key, $prefix) === 0) {
-				$this->remove($key);
-			}
-		}
-		return true;
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 */
-	public function add($key, $value, $ttl = 0) {
-		// since this cache is not shared race conditions aren't an issue
-		if ($this->hasKey($key)) {
-			return false;
-		} else {
-			return $this->set($key, $value, $ttl);
-		}
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		$oldValue = $this->get($key);
-		if (is_int($oldValue)) {
-			$this->set($key, $oldValue + $step);
-			return $oldValue + $step;
-		} else {
-			$success = $this->add($key, $step);
-			return ($success) ? $step : false;
-		}
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		$oldValue = $this->get($key);
-		if (is_int($oldValue)) {
-			$this->set($key, $oldValue - $step);
-			return $oldValue - $step;
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Compare and set
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @param mixed $new
-	 * @return bool
-	 */
-	public function cas($key, $old, $new) {
-		if ($this->get($key) === $old) {
-			return $this->set($key, $new);
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	static public function isAvailable() {
-		return true;
-	}
-}
diff --git a/lib/private/memcache/cache.php b/lib/private/memcache/cache.php
deleted file mode 100644
index 63d20721aac..00000000000
--- a/lib/private/memcache/cache.php
+++ /dev/null
@@ -1,96 +0,0 @@
-<?php
-/**
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Robin McCorkell <robin@mccorkell.me.uk>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-abstract class Cache implements \ArrayAccess, \OCP\ICache {
-	/**
-	 * @var string $prefix
-	 */
-	protected $prefix;
-
-	/**
-	 * @param string $prefix
-	 */
-	public function __construct($prefix = '') {
-		$this->prefix = $prefix;
-	}
-
-	/**
-	 * @return string Prefix used for caching purposes
-	 */
-	public function getPrefix() {
-		return $this->prefix;
-	}
-
-	/**
-	 * @param string $key
-	 * @return mixed
-	 */
-	abstract public function get($key);
-
-	/**
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl
-	 * @return mixed
-	 */
-	abstract public function set($key, $value, $ttl = 0);
-
-	/**
-	 * @param string $key
-	 * @return mixed
-	 */
-	abstract public function hasKey($key);
-
-	/**
-	 * @param string $key
-	 * @return mixed
-	 */
-	abstract public function remove($key);
-
-	/**
-	 * @param string $prefix
-	 * @return mixed
-	 */
-	abstract public function clear($prefix = '');
-
-	//implement the ArrayAccess interface
-
-	public function offsetExists($offset) {
-		return $this->hasKey($offset);
-	}
-
-	public function offsetSet($offset, $value) {
-		$this->set($offset, $value);
-	}
-
-	public function offsetGet($offset) {
-		return $this->get($offset);
-	}
-
-	public function offsetUnset($offset) {
-		$this->remove($offset);
-	}
-}
diff --git a/lib/private/memcache/cadtrait.php b/lib/private/memcache/cadtrait.php
deleted file mode 100644
index d44d98cba0b..00000000000
--- a/lib/private/memcache/cadtrait.php
+++ /dev/null
@@ -1,53 +0,0 @@
-<?php
-/**
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-trait CADTrait {
-	abstract public function get($key);
-
-	abstract public function remove($key);
-
-	abstract public function add($key, $value, $ttl = 0);
-
-	/**
-	 * Compare and delete
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @return bool
-	 */
-	public function cad($key, $old) {
-		//no native cas, emulate with locking
-		if ($this->add($key . '_lock', true)) {
-			if ($this->get($key) === $old) {
-				$this->remove($key);
-				$this->remove($key . '_lock');
-				return true;
-			} else {
-				$this->remove($key . '_lock');
-				return false;
-			}
-		} else {
-			return false;
-		}
-	}
-}
diff --git a/lib/private/memcache/castrait.php b/lib/private/memcache/castrait.php
deleted file mode 100644
index 43253fc966b..00000000000
--- a/lib/private/memcache/castrait.php
+++ /dev/null
@@ -1,56 +0,0 @@
-<?php
-/**
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-trait CASTrait {
-	abstract public function get($key);
-
-	abstract public function set($key, $value, $ttl = 0);
-
-	abstract public function remove($key);
-
-	abstract public function add($key, $value, $ttl = 0);
-
-	/**
-	 * Compare and set
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @param mixed $new
-	 * @return bool
-	 */
-	public function cas($key, $old, $new) {
-		//no native cas, emulate with locking
-		if ($this->add($key . '_lock', true)) {
-			if ($this->get($key) === $old) {
-				$this->set($key, $new);
-				$this->remove($key . '_lock');
-				return true;
-			} else {
-				$this->remove($key . '_lock');
-				return false;
-			}
-		} else {
-			return false;
-		}
-	}
-}
diff --git a/lib/private/memcache/factory.php b/lib/private/memcache/factory.php
deleted file mode 100644
index a005f319b3e..00000000000
--- a/lib/private/memcache/factory.php
+++ /dev/null
@@ -1,189 +0,0 @@
-<?php
-/**
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Markus Goetz <markus@woboq.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Robin McCorkell <robin@mccorkell.me.uk>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use \OCP\ICacheFactory;
-use \OCP\ILogger;
-
-class Factory implements ICacheFactory {
-	const NULL_CACHE = '\\OC\\Memcache\\NullCache';
-
-	/**
-	 * @var string $globalPrefix
-	 */
-	private $globalPrefix;
-
-	/**
-	 * @var ILogger $logger
-	 */
-	private $logger;
-
-	/**
-	 * @var string $localCacheClass
-	 */
-	private $localCacheClass;
-
-	/**
-	 * @var string $distributedCacheClass
-	 */
-	private $distributedCacheClass;
-
-	/**
-	 * @var string $lockingCacheClass
-	 */
-	private $lockingCacheClass;
-
-	/**
-	 * @param string $globalPrefix
-	 * @param ILogger $logger
-	 * @param string|null $localCacheClass
-	 * @param string|null $distributedCacheClass
-	 * @param string|null $lockingCacheClass
-	 */
-	public function __construct($globalPrefix, ILogger $logger,
-		$localCacheClass = null, $distributedCacheClass = null, $lockingCacheClass = null)
-	{
-		$this->logger = $logger;
-		$this->globalPrefix = $globalPrefix;
-
-		if (!$localCacheClass) {
-			$localCacheClass = self::NULL_CACHE;
-		}
-		if (!$distributedCacheClass) {
-			$distributedCacheClass = $localCacheClass;
-		}
-
-		$missingCacheMessage = 'Memcache {class} not available for {use} cache';
-		$missingCacheHint = 'Is the matching PHP module installed and enabled?';
-		if (!$localCacheClass::isAvailable()) {
-			if (\OC::$CLI && !defined('PHPUNIT_RUN')) {
-				// CLI should not hard-fail on broken memcache
-				$this->logger->info($missingCacheMessage, [
-					'class' => $localCacheClass,
-					'use' => 'local',
-					'app' => 'cli'
-				]);
-				$localCacheClass = self::NULL_CACHE;
-			} else {
-				throw new \OC\HintException(strtr($missingCacheMessage, [
-					'{class}' => $localCacheClass, '{use}' => 'local'
-				]), $missingCacheHint);
-			}
-		}
-		if (!$distributedCacheClass::isAvailable()) {
-			if (\OC::$CLI && !defined('PHPUNIT_RUN')) {
-				// CLI should not hard-fail on broken memcache
-				$this->logger->info($missingCacheMessage, [
-					'class' => $distributedCacheClass,
-					'use' => 'distributed',
-					'app' => 'cli'
-				]);
-				$distributedCacheClass = self::NULL_CACHE;
-			} else {
-				throw new \OC\HintException(strtr($missingCacheMessage, [
-					'{class}' => $distributedCacheClass, '{use}' => 'distributed'
-				]), $missingCacheHint);
-			}
-		}
-		if (!($lockingCacheClass && $lockingCacheClass::isAvailable())) {
-			// don't fallback since the fallback might not be suitable for storing lock
-			$lockingCacheClass = self::NULL_CACHE;
-		}
-
-		$this->localCacheClass = $localCacheClass;
-		$this->distributedCacheClass = $distributedCacheClass;
-		$this->lockingCacheClass = $lockingCacheClass;
-	}
-
-	/**
-	 * create a cache instance for storing locks
-	 *
-	 * @param string $prefix
-	 * @return \OCP\IMemcache
-	 */
-	public function createLocking($prefix = '') {
-		return new $this->lockingCacheClass($this->globalPrefix . '/' . $prefix);
-	}
-
-	/**
-	 * create a distributed cache instance
-	 *
-	 * @param string $prefix
-	 * @return \OC\Memcache\Cache
-	 */
-	public function createDistributed($prefix = '') {
-		return new $this->distributedCacheClass($this->globalPrefix . '/' . $prefix);
-	}
-
-	/**
-	 * create a local cache instance
-	 *
-	 * @param string $prefix
-	 * @return \OC\Memcache\Cache
-	 */
-	public function createLocal($prefix = '') {
-		return new $this->localCacheClass($this->globalPrefix . '/' . $prefix);
-	}
-
-	/**
-	 * @see \OC\Memcache\Factory::createDistributed()
-	 * @param string $prefix
-	 * @return \OC\Memcache\Cache
-	 */
-	public function create($prefix = '') {
-		return $this->createDistributed($prefix);
-	}
-
-	/**
-	 * check memcache availability
-	 *
-	 * @return bool
-	 */
-	public function isAvailable() {
-		return ($this->distributedCacheClass !== self::NULL_CACHE);
-	}
-
-	/**
-	 * @see \OC\Memcache\Factory::createLocal()
-	 * @param string $prefix
-	 * @return Cache
-	 */
-	public function createLowLatency($prefix = '') {
-		return $this->createLocal($prefix);
-	}
-
-	/**
-	 * check local memcache availability
-	 *
-	 * @return bool
-	 */
-	public function isAvailableLowLatency() {
-		return ($this->localCacheClass !== self::NULL_CACHE);
-	}
-}
diff --git a/lib/private/memcache/memcached.php b/lib/private/memcache/memcached.php
deleted file mode 100644
index a30f9da7ed7..00000000000
--- a/lib/private/memcache/memcached.php
+++ /dev/null
@@ -1,189 +0,0 @@
-<?php
-/**
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Robin McCorkell <robin@mccorkell.me.uk>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcache;
-
-class Memcached extends Cache implements IMemcache {
-	use CASTrait;
-
-	/**
-	 * @var \Memcached $cache
-	 */
-	private static $cache = null;
-
-	use CADTrait;
-
-	public function __construct($prefix = '') {
-		parent::__construct($prefix);
-		if (is_null(self::$cache)) {
-			self::$cache = new \Memcached();
-			$servers = \OC::$server->getSystemConfig()->getValue('memcached_servers');
-			if (!$servers) {
-				$server = \OC::$server->getSystemConfig()->getValue('memcached_server');
-				if ($server) {
-					$servers = array($server);
-				} else {
-					$servers = array(array('localhost', 11211));
-				}
-			}
-			self::$cache->addServers($servers);
-		}
-	}
-
-	/**
-	 * 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) {
-			$result =  self::$cache->set($this->getNamespace() . $key, $value, $ttl);
-		} else {
-			$result = self::$cache->set($this->getNamespace() . $key, $value);
-		}
-		$this->verifyReturnCode();
-		return $result;
-	}
-
-	public function hasKey($key) {
-		self::$cache->get($this->getNamespace() . $key);
-		return self::$cache->getResultCode() === \Memcached::RES_SUCCESS;
-	}
-
-	public function remove($key) {
-		$result= self::$cache->delete($this->getNamespace() . $key);
-		if (self::$cache->getResultCode() !== \Memcached::RES_NOTFOUND) {
-			$this->verifyReturnCode();
-		}
-		return $result;
-	}
-
-	public function clear($prefix = '') {
-		$prefix = $this->getNamespace() . $prefix;
-		$allKeys = self::$cache->getAllKeys();
-		if ($allKeys === false) {
-			// newer Memcached doesn't like getAllKeys(), flush everything
-			self::$cache->flush();
-			return true;
-		}
-		$keys = array();
-		$prefixLength = strlen($prefix);
-		foreach ($allKeys as $key) {
-			if (substr($key, 0, $prefixLength) === $prefix) {
-				$keys[] = $key;
-			}
-		}
-		if (method_exists(self::$cache, 'deleteMulti')) {
-			self::$cache->deleteMulti($keys);
-		} else {
-			foreach ($keys as $key) {
-				self::$cache->delete($key);
-			}
-		}
-		return true;
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 * @throws \Exception
-	 */
-	public function add($key, $value, $ttl = 0) {
-		$result = self::$cache->add($this->getPrefix() . $key, $value, $ttl);
-		if (self::$cache->getResultCode() !== \Memcached::RES_NOTSTORED) {
-			$this->verifyReturnCode();
-		}
-		return $result;
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		$this->add($key, 0);
-		$result = self::$cache->increment($this->getPrefix() . $key, $step);
-
-		if (self::$cache->getResultCode() !== \Memcached::RES_SUCCESS) {
-			return false;
-		}
-
-		return $result;
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		$result = self::$cache->decrement($this->getPrefix() . $key, $step);
-
-		if (self::$cache->getResultCode() !== \Memcached::RES_SUCCESS) {
-			return false;
-		}
-
-		return $result;
-	}
-
-	static public function isAvailable() {
-		return extension_loaded('memcached');
-	}
-
-	/**
-	 * @throws \Exception
-	 */
-	private function verifyReturnCode() {
-		$code = self::$cache->getResultCode();
-		if ($code === \Memcached::RES_SUCCESS) {
-			return;
-		}
-		$message = self::$cache->getResultMessage();
-		throw new \Exception("Error $code interacting with memcached : $message");
-	}
-}
diff --git a/lib/private/memcache/nullcache.php b/lib/private/memcache/nullcache.php
deleted file mode 100644
index c490ca7e03c..00000000000
--- a/lib/private/memcache/nullcache.php
+++ /dev/null
@@ -1,72 +0,0 @@
-<?php
-/**
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Robin McCorkell <robin@mccorkell.me.uk>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Vincent Petry <pvince81@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-class NullCache extends Cache implements \OCP\IMemcache {
-	public function get($key) {
-		return null;
-	}
-
-	public function set($key, $value, $ttl = 0) {
-		return true;
-	}
-
-	public function hasKey($key) {
-		return false;
-	}
-
-	public function remove($key) {
-		return true;
-	}
-
-	public function add($key, $value, $ttl = 0) {
-		return true;
-	}
-
-	public function inc($key, $step = 1) {
-		return true;
-	}
-
-	public function dec($key, $step = 1) {
-		return true;
-	}
-
-	public function cas($key, $old, $new) {
-		return true;
-	}
-
-	public function cad($key, $old) {
-		return true;
-	}
-
-	public function clear($prefix = '') {
-		return true;
-	}
-
-	static public function isAvailable() {
-		return true;
-	}
-}
diff --git a/lib/private/memcache/redis.php b/lib/private/memcache/redis.php
deleted file mode 100644
index b3444a2b4e9..00000000000
--- a/lib/private/memcache/redis.php
+++ /dev/null
@@ -1,208 +0,0 @@
-<?php
-/**
- * @author Joas Schilling <nickvergessen@owncloud.com>
- * @author Jörn Friedrich Dreyer <jfd@butonic.de>
- * @author Lukas Reschke <lukas@owncloud.com>
- * @author Michael Telatynski <7t3chguy@gmail.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcacheTTL;
-
-class Redis extends Cache implements IMemcacheTTL {
-	/**
-	 * @var \Redis $cache
-	 */
-	private static $cache = null;
-
-	public function __construct($prefix = '') {
-		parent::__construct($prefix);
-		if (is_null(self::$cache)) {
-			// TODO allow configuring a RedisArray, see https://github.com/nicolasff/phpredis/blob/master/arrays.markdown#redis-arrays
-			self::$cache = new \Redis();
-			$config = \OC::$server->getSystemConfig()->getValue('redis', array());
-			if (isset($config['host'])) {
-				$host = $config['host'];
-			} else {
-				$host = '127.0.0.1';
-			}
-			if (isset($config['port'])) {
-				$port = $config['port'];
-			} else {
-				$port = 6379;
-			}
-			if (isset($config['timeout'])) {
-				$timeout = $config['timeout'];
-			} else {
-				$timeout = 0.0; // unlimited
-			}
-
-			self::$cache->connect($host, $port, $timeout);
-			if(isset($config['password']) && $config['password'] !== '') {
-				self::$cache->auth($config['password']);
-			}
-
-			if (isset($config['dbindex'])) {
-				self::$cache->select($config['dbindex']);
-			}
-		}
-	}
-
-	/**
-	 * entries in redis get 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 && !self::$cache->exists($this->getNamespace() . $key)) {
-			return null;
-		} else {
-			return json_decode($result, true);
-		}
-	}
-
-	public function set($key, $value, $ttl = 0) {
-		if ($ttl > 0) {
-			return self::$cache->setex($this->getNamespace() . $key, $ttl, json_encode($value));
-		} else {
-			return self::$cache->set($this->getNamespace() . $key, json_encode($value));
-		}
-	}
-
-	public function hasKey($key) {
-		return self::$cache->exists($this->getNamespace() . $key);
-	}
-
-	public function remove($key) {
-		if (self::$cache->delete($this->getNamespace() . $key)) {
-			return true;
-		} else {
-			return false;
-		}
-	}
-
-	public function clear($prefix = '') {
-		$prefix = $this->getNamespace() . $prefix . '*';
-		$it = null;
-		self::$cache->setOption(\Redis::OPT_SCAN, \Redis::SCAN_RETRY);
-		while ($keys = self::$cache->scan($it, $prefix)) {
-			self::$cache->delete($keys);
-		}
-		return true;
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 */
-	public function add($key, $value, $ttl = 0) {
-		// don't encode ints for inc/dec
-		if (!is_int($value)) {
-			$value = json_encode($value);
-		}
-		return self::$cache->setnx($this->getPrefix() . $key, $value);
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		return self::$cache->incrBy($this->getNamespace() . $key, $step);
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		if (!$this->hasKey($key)) {
-			return false;
-		}
-		return self::$cache->decrBy($this->getNamespace() . $key, $step);
-	}
-
-	/**
-	 * Compare and set
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @param mixed $new
-	 * @return bool
-	 */
-	public function cas($key, $old, $new) {
-		if (!is_int($new)) {
-			$new = json_encode($new);
-		}
-		self::$cache->watch($this->getNamespace() . $key);
-		if ($this->get($key) === $old) {
-			$result = self::$cache->multi()
-				->set($this->getNamespace() . $key, $new)
-				->exec();
-			return ($result === false) ? false : true;
-		}
-		self::$cache->unwatch();
-		return false;
-	}
-
-	/**
-	 * Compare and delete
-	 *
-	 * @param string $key
-	 * @param mixed $old
-	 * @return bool
-	 */
-	public function cad($key, $old) {
-		self::$cache->watch($this->getNamespace() . $key);
-		if ($this->get($key) === $old) {
-			$result = self::$cache->multi()
-				->del($this->getNamespace() . $key)
-				->exec();
-			return ($result === false) ? false : true;
-		}
-		self::$cache->unwatch();
-		return false;
-	}
-
-	public function setTTL($key, $ttl) {
-		self::$cache->expire($this->getNamespace() . $key, $ttl);
-	}
-
-	static public function isAvailable() {
-		return extension_loaded('redis')
-		&& version_compare(phpversion('redis'), '2.2.5', '>=');
-	}
-}
-
diff --git a/lib/private/memcache/xcache.php b/lib/private/memcache/xcache.php
deleted file mode 100644
index e80901faadc..00000000000
--- a/lib/private/memcache/xcache.php
+++ /dev/null
@@ -1,134 +0,0 @@
-<?php
-/**
- * @author Andreas Fischer <bantu@owncloud.com>
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Clark Tomlinson <fallen013@gmail.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <icewind@owncloud.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- *
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OC\Memcache;
-
-use OCP\IMemcache;
-
-/**
- * See http://xcache.lighttpd.net/wiki/XcacheApi for provided constants and
- * functions etc.
- */
-class XCache extends Cache implements IMemcache {
-	use CASTrait;
-
-	use CADTrait;
-
-	/**
-	 * entries in XCache gets namespaced to prevent collisions between ownCloud instances and users
-	 */
-	protected function getNameSpace() {
-		return $this->prefix;
-	}
-
-	public function get($key) {
-		return xcache_get($this->getNamespace() . $key);
-	}
-
-	public function set($key, $value, $ttl = 0) {
-		if ($ttl > 0) {
-			return xcache_set($this->getNamespace() . $key, $value, $ttl);
-		} else {
-			return xcache_set($this->getNamespace() . $key, $value);
-		}
-	}
-
-	public function hasKey($key) {
-		return xcache_isset($this->getNamespace() . $key);
-	}
-
-	public function remove($key) {
-		return xcache_unset($this->getNamespace() . $key);
-	}
-
-	public function clear($prefix = '') {
-		if (function_exists('xcache_unset_by_prefix')) {
-			return xcache_unset_by_prefix($this->getNamespace() . $prefix);
-		} else {
-			// Since we can not clear by prefix, we just clear the whole cache.
-			xcache_clear_cache(\XC_TYPE_VAR, 0);
-		}
-		return true;
-	}
-
-	/**
-	 * Set a value in the cache if it's not already stored
-	 *
-	 * @param string $key
-	 * @param mixed $value
-	 * @param int $ttl Time To Live in seconds. Defaults to 60*60*24
-	 * @return bool
-	 */
-	public function add($key, $value, $ttl = 0) {
-		if ($this->hasKey($key)) {
-			return false;
-		} else {
-			return $this->set($key, $value, $ttl);
-		}
-	}
-
-	/**
-	 * Increase a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function inc($key, $step = 1) {
-		return xcache_inc($this->getPrefix() . $key, $step);
-	}
-
-	/**
-	 * Decrease a stored number
-	 *
-	 * @param string $key
-	 * @param int $step
-	 * @return int | bool
-	 */
-	public function dec($key, $step = 1) {
-		return xcache_dec($this->getPrefix() . $key, $step);
-	}
-
-	static public function isAvailable() {
-		if (!extension_loaded('xcache')) {
-			return false;
-		}
-		if (\OC::$CLI && !getenv('XCACHE_TEST')) {
-			return false;
-		}
-		if (!function_exists('xcache_unset_by_prefix') && \OC::$server->getIniWrapper()->getBool('xcache.admin.enable_auth')) {
-			// We do not want to use XCache if we can not clear it without
-			// using the administration function xcache_clear_cache()
-			// AND administration functions are password-protected.
-			return false;
-		}
-		$var_size = \OC::$server->getIniWrapper()->getBytes('xcache.var_size');
-		if (!$var_size) {
-			return false;
-		}
-		return true;
-	}
-}