Merge pull request #3136 from owncloud/mount-cleanup

Separation of mount management
This commit is contained in:
icewind1991 2013-04-26 06:55:21 -07:00
commit 5474fea1f6
15 changed files with 326 additions and 201 deletions

View File

@ -44,7 +44,7 @@ class Shared_Cache extends Cache {
$source = \OC_Share_Backend_File::getSource($target);
if (isset($source['path']) && isset($source['fileOwner'])) {
\OC\Files\Filesystem::initMountPoints($source['fileOwner']);
$mount = \OC\Files\Mount::findByNumericId($source['storage']);
$mount = \OC\Files\Filesystem::getMountByNumericId($source['storage']);
if ($mount) {
$fullPath = $mount->getMountPoint().$source['path'];
list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($fullPath);

View File

@ -71,7 +71,7 @@ class Shared extends \OC\Files\Storage\Common {
if ($source) {
if (!isset($source['fullPath'])) {
\OC\Files\Filesystem::initMountPoints($source['fileOwner']);
$mount = \OC\Files\Mount::findByNumericId($source['storage']);
$mount = \OC\Files\Filesystem::getMountByNumericId($source['storage']);
if ($mount) {
$this->files[$target]['fullPath'] = $mount->getMountPoint().$source['path'];
} else {

View File

@ -30,11 +30,9 @@ class Cache {
private $storageId;
/**
* numeric storage id
*
* @var int $numericId
* @var Storage $storageCache
*/
private $numericId;
private $storageCache;
private $mimetypeIds = array();
private $mimetypes = array();
@ -52,19 +50,11 @@ class Cache {
$this->storageId = md5($this->storageId);
}
$query = \OC_DB::prepare('SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?');
$result = $query->execute(array($this->storageId));
if ($row = $result->fetchRow()) {
$this->numericId = $row['numeric_id'];
} else {
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*storages`(`id`) VALUES(?)');
$query->execute(array($this->storageId));
$this->numericId = \OC_DB::insertid('*PREFIX*storages');
}
$this->storageCache = new Storage($storage);
}
public function getNumericStorageId() {
return $this->numericId;
return $this->storageCache->getNumericId();
}
/**
@ -111,7 +101,7 @@ class Cache {
public function get($file) {
if (is_string($file) or $file == '') {
$where = 'WHERE `storage` = ? AND `path_hash` = ?';
$params = array($this->numericId, md5($file));
$params = array($this->getNumericStorageId(), md5($file));
} else { //file id
$where = 'WHERE `fileid` = ?';
$params = array($file);
@ -198,14 +188,14 @@ class Cache {
list($queryParts, $params) = $this->buildParts($data);
$queryParts[] = '`storage`';
$params[] = $this->numericId;
$params[] = $this->getNumericStorageId();
$valuesPlaceholder = array_fill(0, count($queryParts), '?');
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*filecache`(' . implode(', ', $queryParts) . ')'
. ' VALUES(' . implode(', ', $valuesPlaceholder) . ')');
$result = $query->execute($params);
if (\OC_DB::isError($result)) {
\OCP\Util::writeLog('cache', 'Insert to cache failed: '.$result, \OCP\Util::ERROR);
\OCP\Util::writeLog('cache', 'Insert to cache failed: ' . $result, \OCP\Util::ERROR);
}
return (int)\OC_DB::insertid('*PREFIX*filecache');
@ -264,7 +254,7 @@ class Cache {
$pathHash = md5($file);
$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?');
$result = $query->execute(array($this->numericId, $pathHash));
$result = $query->execute(array($this->getNumericStorageId(), $pathHash));
if ($row = $result->fetchRow()) {
return $row['fileid'];
@ -353,7 +343,7 @@ class Cache {
*/
public function clear() {
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*filecache` WHERE storage = ?');
$query->execute(array($this->numericId));
$query->execute(array($this->getNumericStorageId()));
$query = \OC_DB::prepare('DELETE FROM `*PREFIX*storages` WHERE id = ?');
$query->execute(array($this->storageId));
@ -367,7 +357,7 @@ class Cache {
public function getStatus($file) {
$pathHash = md5($file);
$query = \OC_DB::prepare('SELECT `size` FROM `*PREFIX*filecache` WHERE `storage` = ? AND `path_hash` = ?');
$result = $query->execute(array($this->numericId, $pathHash));
$result = $query->execute(array($this->getNumericStorageId(), $pathHash));
if ($row = $result->fetchRow()) {
if ((int)$row['size'] === -1) {
return self::SHALLOW;
@ -394,7 +384,7 @@ class Cache {
SELECT `fileid`, `storage`, `path`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `etag`
FROM `*PREFIX*filecache` WHERE `name` LIKE ? AND `storage` = ?'
);
$result = $query->execute(array($pattern, $this->numericId));
$result = $query->execute(array($pattern, $this->getNumericStorageId()));
$files = array();
while ($row = $result->fetchRow()) {
$row['mimetype'] = $this->getMimetype($row['mimetype']);
@ -421,7 +411,7 @@ class Cache {
FROM `*PREFIX*filecache` WHERE ' . $where . ' AND `storage` = ?'
);
$mimetype = $this->getMimetypeId($mimetype);
$result = $query->execute(array($mimetype, $this->numericId));
$result = $query->execute(array($mimetype, $this->getNumericStorageId()));
$files = array();
while ($row = $result->fetchRow()) {
$row['mimetype'] = $this->getMimetype($row['mimetype']);
@ -459,7 +449,7 @@ class Cache {
return 0;
}
$query = \OC_DB::prepare('SELECT `size` FROM `*PREFIX*filecache` WHERE `parent` = ? AND `storage` = ?');
$result = $query->execute(array($id, $this->numericId));
$result = $query->execute(array($id, $this->getNumericStorageId()));
$totalSize = 0;
$hasChilds = 0;
while ($row = $result->fetchRow()) {
@ -486,7 +476,7 @@ class Cache {
*/
public function getAll() {
$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE `storage` = ?');
$result = $query->execute(array($this->numericId));
$result = $query->execute(array($this->getNumericStorageId()));
$ids = array();
while ($row = $result->fetchRow()) {
$ids[] = $row['fileid'];
@ -506,7 +496,7 @@ class Cache {
public function getIncomplete() {
$query = \OC_DB::prepare('SELECT `path` FROM `*PREFIX*filecache`'
. ' WHERE `storage` = ? AND `size` = -1 ORDER BY `fileid` DESC LIMIT 1');
$result = $query->execute(array($this->numericId));
$result = $query->execute(array($this->getNumericStorageId()));
if ($row = $result->fetchRow()) {
return $row['path'];
} else {
@ -517,6 +507,7 @@ class Cache {
/**
* get the storage id of the storage for a file and the internal path of the file
*
* @param int $id
* @return array, first element holding the storage id, second the path
*/
static public function getById($id) {
@ -529,10 +520,8 @@ class Cache {
return null;
}
$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?');
$result = $query->execute(array($numericId));
if ($row = $result->fetchRow()) {
return array($row['id'], $path);
if ($id = Storage::getStorageId($numericId)) {
return array($id, $path);
} else {
return null;
}

59
lib/files/cache/storage.php vendored Normal file
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@ -0,0 +1,59 @@
<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Cache;
/**
* Class Storage
*
* cache storage specific data
*
* @package OC\Files\Cache
*/
class Storage {
private $storageId;
private $numericId;
/**
* @param \OC\Files\Storage\Storage|string $storage
*/
public function __construct($storage) {
if ($storage instanceof \OC\Files\Storage\Storage) {
$this->storageId = $storage->getId();
} else {
$this->storageId = $storage;
}
if (strlen($this->storageId) > 64) {
$this->storageId = md5($this->storageId);
}
$query = \OC_DB::prepare('SELECT `numeric_id` FROM `*PREFIX*storages` WHERE `id` = ?');
$result = $query->execute(array($this->storageId));
if ($row = $result->fetchRow()) {
$this->numericId = $row['numeric_id'];
} else {
$query = \OC_DB::prepare('INSERT INTO `*PREFIX*storages`(`id`) VALUES(?)');
$query->execute(array($this->storageId));
$this->numericId = \OC_DB::insertid('*PREFIX*storages');
}
}
public function getNumericId() {
return $this->numericId;
}
public static function getStorageId($numericId) {
$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?');
$result = $query->execute(array($numericId));
if ($row = $result->fetchRow()) {
return $row['id'];
} else {
return null;
}
}
}

View File

@ -34,6 +34,11 @@ const FREE_SPACE_UNKNOWN = -2;
const FREE_SPACE_UNLIMITED = -3;
class Filesystem {
/**
* @var Mount\Manager $mounts
*/
private static $mounts;
public static $loaded = false;
/**
* @var \OC\Files\View $defaultInstance
@ -147,7 +152,7 @@ class Filesystem {
* @return string
*/
static public function getMountPoint($path) {
$mount = Mount::find($path);
$mount = self::$mounts->find($path);
if ($mount) {
return $mount->getMountPoint();
} else {
@ -163,7 +168,7 @@ class Filesystem {
*/
static public function getMountPoints($path) {
$result = array();
$mounts = Mount::findIn($path);
$mounts = self::$mounts->findIn($path);
foreach ($mounts as $mount) {
$result[] = $mount->getMountPoint();
}
@ -177,10 +182,26 @@ class Filesystem {
* @return \OC\Files\Storage\Storage
*/
public static function getStorage($mountPoint) {
$mount = Mount::find($mountPoint);
$mount = self::$mounts->find($mountPoint);
return $mount->getStorage();
}
/**
* @param $id
* @return Mount\Mount[]
*/
public static function getMountByStorageId($id) {
return self::$mounts->findByStorageId($id);
}
/**
* @param $id
* @return Mount\Mount[]
*/
public static function getMountByNumericId($id) {
return self::$mounts->findByStorageId($id);
}
/**
* resolve a path to a storage and internal path
*
@ -188,7 +209,7 @@ class Filesystem {
* @return array consisting of the storage and the internal path
*/
static public function resolvePath($path) {
$mount = Mount::find($path);
$mount = self::$mounts->find($path);
if ($mount) {
return array($mount->getStorage(), $mount->getInternalPath($path));
} else {
@ -201,6 +222,7 @@ class Filesystem {
return false;
}
self::$defaultInstance = new View($root);
self::$mounts = new Mount\Manager();
//load custom mount config
self::initMountPoints($user);
@ -210,6 +232,10 @@ class Filesystem {
return true;
}
static public function initMounts(){
self::$mounts = new Mount\Manager();
}
/**
* Initialize system and personal mount points for a user
*
@ -328,7 +354,7 @@ class Filesystem {
* clear all mounts and storage backends
*/
public static function clearMounts() {
Mount::clear();
self::$mounts->clear();
}
/**
@ -339,7 +365,8 @@ class Filesystem {
* @param string $mountpoint
*/
static public function mount($class, $arguments, $mountpoint) {
new Mount($class, $mountpoint, $arguments);
$mount = new Mount\Mount($class, $mountpoint, $arguments);
self::$mounts->addMount($mount);
}
/**

120
lib/files/mount/manager.php Normal file
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@ -0,0 +1,120 @@
<?php
/**
* Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace OC\Files\Mount;
use \OC\Files\Filesystem;
class Manager {
/**
* @var Mount[]
*/
private $mounts = array();
/**
* @param Mount $mount
*/
public function addMount($mount) {
$this->mounts[$mount->getMountPoint()] = $mount;
}
/**
* Find the mount for $path
*
* @param $path
* @return Mount
*/
public function find($path) {
\OC_Util::setupFS();
$path = $this->formatPath($path);
if (isset($this->mounts[$path])) {
return $this->mounts[$path];
}
\OC_Hook::emit('OC_Filesystem', 'get_mountpoint', array('path' => $path));
$foundMountPoint = '';
$mountPoints = array_keys($this->mounts);
foreach ($mountPoints as $mountpoint) {
if (strpos($path, $mountpoint) === 0 and strlen($mountpoint) > strlen($foundMountPoint)) {
$foundMountPoint = $mountpoint;
}
}
if (isset($this->mounts[$foundMountPoint])) {
return $this->mounts[$foundMountPoint];
} else {
return null;
}
}
/**
* Find all mounts in $path
*
* @param $path
* @return Mount[]
*/
public function findIn($path) {
\OC_Util::setupFS();
$path = $this->formatPath($path);
$result = array();
$pathLength = strlen($path);
$mountPoints = array_keys($this->mounts);
foreach ($mountPoints as $mountPoint) {
if (substr($mountPoint, 0, $pathLength) === $path and strlen($mountPoint) > $pathLength) {
$result[] = $this->mounts[$mountPoint];
}
}
return $result;
}
public function clear() {
$this->mounts = array();
}
/**
* Find mounts by storage id
*
* @param string $id
* @return Mount[]
*/
public function findByStorageId($id) {
\OC_Util::setupFS();
if (strlen($id) > 64) {
$id = md5($id);
}
$result = array();
foreach ($this->mounts as $mount) {
if ($mount->getStorageId() === $id) {
$result[] = $mount;
}
}
return $result;
}
/**
* Find mounts by numeric storage id
*
* @param string $id
* @return Mount
*/
public function findByNumericId($id) {
$storageId = \OC\Files\Cache\Storage::getStorageId($id);
return $this->findByStorageId($storageId);
}
/**
* @param string $path
* @return string
*/
private function formatPath($path) {
$path = Filesystem::normalizePath($path);
if (strlen($path) > 1) {
$path .= '/';
}
return $path;
}
}

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@ -6,13 +6,12 @@
* See the COPYING-README file.
*/
namespace OC\Files;
namespace OC\Files\Mount;
use \OC\Files\Filesystem;
class Mount {
/**
* @var Mount[]
*/
static private $mounts = array();
/**
* @var \OC\Files\Storage\Storage $storage
@ -33,7 +32,7 @@ class Mount {
$arguments = array();
}
$mountpoint = self::formatPath($mountpoint);
$mountpoint = $this->formatPath($mountpoint);
if ($storage instanceof \OC\Files\Storage\Storage) {
$this->class = get_class($storage);
$this->storage = $storage;
@ -46,8 +45,6 @@ class Mount {
$this->arguments = $arguments;
}
$this->mountPoint = $mountpoint;
self::$mounts[$this->mountPoint] = $this;
}
/**
@ -58,6 +55,8 @@ class Mount {
}
/**
* create the storage that is mounted
*
* @return \OC\Files\Storage\Storage
*/
private function createStorage() {
@ -121,103 +120,11 @@ class Mount {
* @param string $path
* @return string
*/
private static function formatPath($path) {
private function formatPath($path) {
$path = Filesystem::normalizePath($path);
if (strlen($path) > 1) {
$path .= '/';
}
return $path;
}
/**
* Find the mount for $path
*
* @param $path
* @return Mount
*/
public static function find($path) {
\OC_Util::setupFS();
$path = self::formatPath($path);
if (isset(self::$mounts[$path])) {
return self::$mounts[$path];
}
\OC_Hook::emit('OC_Filesystem', 'get_mountpoint', array('path' => $path));
$foundMountPoint = '';
$mountPoints = array_keys(self::$mounts);
foreach ($mountPoints as $mountpoint) {
if (strpos($path, $mountpoint) === 0 and strlen($mountpoint) > strlen($foundMountPoint)) {
$foundMountPoint = $mountpoint;
}
}
if (isset(self::$mounts[$foundMountPoint])) {
return self::$mounts[$foundMountPoint];
} else {
return null;
}
}
/**
* Find all mounts in $path
*
* @param $path
* @return Mount[]
*/
public static function findIn($path) {
\OC_Util::setupFS();
$path = self::formatPath($path);
$result = array();
$pathLength = strlen($path);
$mountPoints = array_keys(self::$mounts);
foreach ($mountPoints as $mountPoint) {
if (substr($mountPoint, 0, $pathLength) === $path and strlen($mountPoint) > $pathLength) {
$result[] = self::$mounts[$mountPoint];
}
}
return $result;
}
public static function clear() {
self::$mounts = array();
}
/**
* Find mounts by storage id
*
* @param string $id
* @return Mount[]
*/
public static function findByStorageId($id) {
\OC_Util::setupFS();
if (strlen($id) > 64) {
$id = md5($id);
}
$result = array();
foreach (self::$mounts as $mount) {
if ($mount->getStorageId() === $id) {
$result[] = $mount;
}
}
return $result;
}
/**
* Find mounts by numeric storage id
*
* @param string $id
* @return Mount
*/
public static function findByNumericId($id) {
$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*storages` WHERE `numeric_id` = ?');
$result = $query->execute(array($id))->fetchOne();
if ($result) {
$id = $result;
foreach (self::$mounts as $mount) {
if ($mount->getStorageId() === $id) {
return $mount;
}
}
}
return false;
}
}

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@ -25,6 +25,7 @@ abstract class Common implements \OC\Files\Storage\Storage {
private $scanner;
private $permissioncache;
private $watcher;
private $storageCache;
public function __construct($parameters) {
}
@ -300,6 +301,13 @@ abstract class Common implements \OC\Files\Storage\Storage {
return $this->watcher;
}
public function getStorageCache(){
if (!isset($this->storageCache)) {
$this->storageCache = new \OC\Files\Cache\Storage($this);
}
return $this->storageCache;
}
/**
* get the owner of a path
*
@ -361,7 +369,7 @@ abstract class Common implements \OC\Files\Storage\Storage {
* get the free space in the storage
*
* @param $path
* return int
* @return int
*/
public function free_space($path) {
return \OC\Files\FREE_SPACE_UNKNOWN;

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@ -328,6 +328,11 @@ interface Storage {
*/
public function getWatcher($path = '');
/**
* @return \OC\Files\Cache\Storage
*/
public function getStorageCache();
/**
* get the ETag for a file or folder
*

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@ -977,7 +977,7 @@ class View {
*/
public function getPath($id) {
list($storage, $internalPath) = Cache\Cache::getById($id);
$mounts = Mount::findByStorageId($storage);
$mounts = Filesystem::getMountByStorageId($storage);
foreach ($mounts as $mount) {
/**
* @var \OC\Files\Mount $mount

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@ -875,7 +875,7 @@ class Share {
$row['path'] = '/Shared/'.basename($row['path']);
} else {
if (!isset($mounts[$row['storage']])) {
$mounts[$row['storage']] = \OC\Files\Mount::findByNumericId($row['storage']);
$mounts[$row['storage']] = \OC\Files\Filesystem::getMountByNumericId($row['storage']);
}
if ($mounts[$row['storage']]) {
$path = $mounts[$row['storage']]->getMountPoint().$row['path'];

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@ -38,6 +38,7 @@ class OC_Util {
$CONFIG_DATADIRECTORY = OC_Config::getValue( "datadirectory", OC::$SERVERROOT."/data" );
//first set up the local "root" storage
\OC\Files\Filesystem::initMounts();
if(!self::$rootMounted) {
\OC\Files\Filesystem::mount('\OC\Files\Storage\Local', array('datadir'=>$CONFIG_DATADIRECTORY), '/');
self::$rootMounted=true;

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@ -1,58 +0,0 @@
<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace Test\Files;
use \OC\Files\Storage\Temporary;
class LongId extends Temporary {
public function getId() {
return 'long:' . str_repeat('foo', 50) . parent::getId();
}
}
class Mount extends \PHPUnit_Framework_TestCase {
public function setup() {
\OC_Util::setupFS();
\OC\Files\Mount::clear();
}
public function testFind() {
$this->assertNull(\OC\Files\Mount::find('/'));
$rootMount = new \OC\Files\Mount(new Temporary(array()), '/');
$this->assertEquals($rootMount, \OC\Files\Mount::find('/'));
$this->assertEquals($rootMount, \OC\Files\Mount::find('/foo/bar'));
$storage = new Temporary(array());
$mount = new \OC\Files\Mount($storage, '/foo');
$this->assertEquals($rootMount, \OC\Files\Mount::find('/'));
$this->assertEquals($mount, \OC\Files\Mount::find('/foo/bar'));
$this->assertEquals(1, count(\OC\Files\Mount::findIn('/')));
new \OC\Files\Mount(new Temporary(array()), '/bar');
$this->assertEquals(2, count(\OC\Files\Mount::findIn('/')));
$id = $mount->getStorageId();
$this->assertEquals(array($mount), \OC\Files\Mount::findByStorageId($id));
$mount2 = new \OC\Files\Mount($storage, '/foo/bar');
$this->assertEquals(array($mount, $mount2), \OC\Files\Mount::findByStorageId($id));
}
public function testLong() {
$storage = new LongId(array());
$mount = new \OC\Files\Mount($storage, '/foo');
$id = $mount->getStorageId();
$storageId = $storage->getId();
$this->assertEquals(array($mount), \OC\Files\Mount::findByStorageId($id));
$this->assertEquals(array($mount), \OC\Files\Mount::findByStorageId($storageId));
$this->assertEquals(array($mount), \OC\Files\Mount::findByStorageId(md5($storageId)));
}
}

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@ -0,0 +1,67 @@
<?php
/**
* Copyright (c) 2013 Robin Appelman <icewind@owncloud.com>
* This file is licensed under the Affero General Public License version 3 or
* later.
* See the COPYING-README file.
*/
namespace Test\Files\Mount;
use \OC\Files\Storage\Temporary;
class LongId extends Temporary {
public function getId() {
return 'long:' . str_repeat('foo', 50) . parent::getId();
}
}
class Manager extends \PHPUnit_Framework_TestCase {
/**
* @var \OC\Files\Mount\Manager
*/
private $manager;
public function setup() {
$this->manager = new \OC\Files\Mount\Manager();
}
public function testFind() {
$this->assertNull($this->manager->find('/'));
$rootMount = new \OC\Files\Mount\Mount(new Temporary(array()), '/');
$this->manager->addMount($rootMount);
$this->assertEquals($rootMount, $this->manager->find('/'));
$this->assertEquals($rootMount, $this->manager->find('/foo/bar'));
$storage = new Temporary(array());
$mount1 = new \OC\Files\Mount\Mount($storage, '/foo');
$this->manager->addMount($mount1);
$this->assertEquals($rootMount, $this->manager->find('/'));
$this->assertEquals($mount1, $this->manager->find('/foo/bar'));
$this->assertEquals(1, count($this->manager->findIn('/')));
$mount2 = new \OC\Files\Mount\Mount(new Temporary(array()), '/bar');
$this->manager->addMount($mount2);
$this->assertEquals(2, count($this->manager->findIn('/')));
$id = $mount1->getStorageId();
$this->assertEquals(array($mount1), $this->manager->findByStorageId($id));
$mount3 = new \OC\Files\Mount\Mount($storage, '/foo/bar');
$this->manager->addMount($mount3);
$this->assertEquals(array($mount1, $mount3), $this->manager->findByStorageId($id));
}
public function testLong() {
$storage = new LongId(array());
$mount = new \OC\Files\Mount\Mount($storage, '/foo');
$this->manager->addMount($mount);
$id = $mount->getStorageId();
$storageId = $storage->getId();
$this->assertEquals(array($mount), $this->manager->findByStorageId($id));
$this->assertEquals(array($mount), $this->manager->findByStorageId($storageId));
$this->assertEquals(array($mount), $this->manager->findByStorageId(md5($storageId)));
}
}

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@ -77,10 +77,10 @@ class Test_StreamWrappers extends PHPUnit_Framework_TestCase {
}
public function testOC() {
\OC\Files\Mount::clear();
\OC\Files\Filesystem::clearMounts();
$storage = new \OC\Files\Storage\Temporary(array());
$storage->file_put_contents('foo.txt', 'asd');
new \OC\Files\Mount($storage, '/');
\OC\Files\Filesystem::mount($storage, array(), '/');
$this->assertTrue(file_exists('oc:///foo.txt'));
$this->assertEquals('asd', file_get_contents('oc:///foo.txt'));