add cache updater

lib/files/cache/updater.php

+<?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\Cache;
+
+/**
+ * listen to filesystem hooks and change the cache accordingly
+ */
+class Updater {
+
+	/**
+	 * resolve a path to a storage and internal path
+	 *
+	 * @param string $path
+	 * @return array consisting of the storage and the internal path
+	 */
+	static public function resolvePath($path) {
+		$view = \OC\Files\Filesystem::getView();
+		return $view->resolvePath($path);
+	}
+
+	static public function writeUpdate($path) {
+		/**
+		 * @var \OC\Files\Storage\Storage $storage
+		 * @var string $internalPath
+		 */
+		list($storage, $internalPath) = self::resolvePath($path);
+		$cache = new Cache($storage);
+		$scanner = new Scanner($storage);
+		$scanner->scan($internalPath, Scanner::SCAN_SHALLOW);
+		$cache->correctFolderSize($internalPath);
+	}
+
+	static public function deleteUpdate($path) {
+		/**
+		 * @var \OC\Files\Storage\Storage $storage
+		 * @var string $internalPath
+		 */
+		list($storage, $internalPath) = self::resolvePath($path);
+		$cache = new Cache($storage);
+		$cache->remove($internalPath);
+		$cache->correctFolderSize($internalPath);
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function writeHook($params) {
+		self::writeUpdate($params['path']);
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function renameHook($params) {
+		self::deleteUpdate($params['oldpath']);
+		self::writeUpdate($params['newpath']);
+	}
+
+	/**
+	 * @param array $params
+	 */
+	static public function deleteHook($params) {
+		self::deleteUpdate($params['path']);
+	}
+}

tests/lib/files/cache/updater.php

+<?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 Test\Files\Cache;
+
+use \OC\Files\Filesystem as Filesystem;
+
+class Updater extends \PHPUnit_Framework_TestCase {
+	/**
+	 * @var \OC\Files\Storage\Storage $storage
+	 */
+	private $storage;
+
+	/**
+	 * @var \OC\Files\Cache\Scanner $scanner
+	 */
+	private $scanner;
+
+	/**
+	 * @var \OC\Files\Cache\Cache $cache
+	 */
+	private $cache;
+
+	private static $user;
+
+	public function setUp() {
+		$this->storage = new \OC\Files\Storage\Temporary(array());
+		$textData = "dummy file data\n";
+		$imgData = file_get_contents(\OC::$SERVERROOT . '/core/img/logo.png');
+		$this->storage->mkdir('folder');
+		$this->storage->file_put_contents('foo.txt', $textData);
+		$this->storage->file_put_contents('foo.png', $imgData);
+		$this->storage->file_put_contents('folder/bar.txt', $textData);
+		$this->storage->file_put_contents('folder/bar2.txt', $textData);
+
+		$this->scanner = $this->storage->getScanner();
+		$this->scanner->scan('');
+		$this->cache = $this->storage->getCache();
+
+		if (!self::$user) {
+			if (!\OC\Files\Filesystem::getView()) {
+				self::$user = uniqid();
+				\OC\Files\Filesystem::init('/' . self::$user . '/files');
+			} else {
+				self::$user = \OC_User::getUser();
+			}
+		}
+
+		Filesystem::clearMounts();
+		Filesystem::mount($this->storage, array(), '/' . self::$user . '/files');
+
+		\OC_Hook::connect('OC_Filesystem', 'post_write', '\OC\Files\Cache\Updater', 'writeHook');
+		\OC_Hook::connect('OC_Filesystem', 'post_delete', '\OC\Files\Cache\Updater', 'deleteHook');
+		\OC_Hook::connect('OC_Filesystem', 'post_rename', '\OC\Files\Cache\Updater', 'renameHook');
+
+	}
+
+	public function tearDown() {
+		$this->cache->clear();
+		Filesystem::tearDown();
+	}
+
+	public function testWrite() {
+		$textSize = strlen("dummy file data\n");
+		$imageSize = filesize(\OC::$SERVERROOT . '/core/img/logo.png');
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(3 * $textSize + $imageSize, $cachedData['size']);
+
+		Filesystem::file_put_contents('foo.txt', 'asd');
+		$cachedData = $this->cache->get('foo.txt');
+		$this->assertEquals(3, $cachedData['size']);
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(2 * $textSize + $imageSize + 3, $cachedData['size']);
+
+		$this->assertFalse($this->cache->inCache('bar.txt'));
+		Filesystem::file_put_contents('bar.txt', 'asd');
+		$this->assertTrue($this->cache->inCache('bar.txt'));
+		$cachedData = $this->cache->get('bar.txt');
+		$this->assertEquals(3, $cachedData['size']);
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(2 * $textSize + $imageSize + 2 * 3, $cachedData['size']);
+	}
+
+	public function testDelete() {
+		$textSize = strlen("dummy file data\n");
+		$imageSize = filesize(\OC::$SERVERROOT . '/core/img/logo.png');
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(3 * $textSize + $imageSize, $cachedData['size']);
+
+		$this->assertTrue($this->cache->inCache('foo.txt'));
+		Filesystem::unlink('foo.txt', 'asd');
+		$this->assertFalse($this->cache->inCache('foo.txt'));
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(2 * $textSize + $imageSize, $cachedData['size']);
+	}
+
+	public function testRename() {
+		$textSize = strlen("dummy file data\n");
+		$imageSize = filesize(\OC::$SERVERROOT . '/core/img/logo.png');
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(3 * $textSize + $imageSize, $cachedData['size']);
+
+		$this->assertTrue($this->cache->inCache('foo.txt'));
+		$this->assertFalse($this->cache->inCache('bar.txt'));
+		Filesystem::rename('foo.txt', 'bar.txt');
+		$this->assertFalse($this->cache->inCache('foo.txt'));
+		$this->assertTrue($this->cache->inCache('bar.txt'));
+		$cachedData = $this->cache->get('');
+		$this->assertEquals(3 * $textSize + $imageSize, $cachedData['size']);
+	}
+}