Upgrade FileCache on ownCloud upgrade for all users with files

core/ajax/update.php

@@ -14,6 +14,10 @@ if (OC::checkUpgrade(false)) {
 	try {
 		$result = OC_DB::updateDbFromStructure(OC::$SERVERROOT.'/db_structure.xml');
 		$watcher->success('Updated database');
+
+		// do a file cache upgrade for users with files
+		// this can take loooooooooooooooooooooooong
+		__doFileCacheUpgrade($watcher);
 	} catch (Exception $exception) {
 		$watcher->failure($exception->getMessage());
 	}
@@ -26,6 +30,47 @@ if (OC::checkUpgrade(false)) {
 	$watcher->done();
 }
 
+/**
+ * The FileCache Upgrade routine
+ *
+ * @param UpdateWatcher $watcher
+ */
+function __doFileCacheUpgrade($watcher) {
+	file_put_contents('/tmp/debug', "START\n", FILE_APPEND);
+	$query = \OC_DB::prepare('
+		SELECT DISTINCT user
+		FROM`*PREFIX*fscache`
+	');
+	$result = $query->execute();
+	$users = $result->fetchAll();
+	if(count($users) == 0) {
+		return;
+	}
+	$step = 100 / count($users);
+	file_put_contents('/tmp/debug', 'Step '. print_r($step, true)."\n", FILE_APPEND);
+	$percentCompleted = 0;
+	$lastPercentCompletedOutput = 0;
+	$startInfoShown = false;
+	foreach($users as $userRow) {
+		$user = $userRow['user'];
+		\OC\Files\Filesystem::initMountPoints($user);
+		\OC\Files\Cache\Upgrade::doSilentUpgrade($user);
+		if(!$startInfoShown) {
+			//We show it only now, because otherwise Info about upgraded apps
+			//will appear between this and progress info
+			$watcher->success('Updating filecache, this may take really long...');
+			$startInfoShown = true;
+		}
+		$percentCompleted += $step;
+		$out = floor($percentCompleted);
+		if($out != $lastPercentCompletedOutput) {
+			$watcher->success('... '. $out.'% done ...');
+			$lastPercentCompletedOutput = $out;
+		}
+	}
+	$watcher->success('Updated filecache');
+}
+
 class UpdateWatcher {
 	/**
 	 * @var \OC_EventSource $eventSource;

lib/files/cache/upgrade.php

@@ -36,7 +36,6 @@ class Upgrade {
 			return;
 		}
 		\OC_Hook::emit('\OC\Files\Cache\Upgrade', 'migrate_path', $path);
-
 		if ($row = $this->legacy->get($path)) {
 			$data = $this->getNewData($row);
 			if ($data) {
@@ -251,4 +250,25 @@ class Upgrade {
 	static function upgradeDone($user) {
 		\OCP\Config::setUserValue($user, 'files', 'cache_version', 5);
 	}
+
+	/**
+	 * Does a "silent" upgrade, i.e. without an Event-Source as triggered
+	 * on User-Login via Ajax. This method is called within the regular
+	 * ownCloud upgrade.
+	 *
+	 * @param string $user a User ID
+	 */
+	public static function doSilentUpgrade($user) {
+		if(!self::needUpgrade($user)) {
+			return;
+		}
+		$legacy = new \OC\Files\Cache\Legacy($user);
+		if ($legacy->hasItems()) {
+			\OC_DB::beginTransaction();
+			$upgrade = new \OC\Files\Cache\Upgrade($legacy);
+			$upgrade->upgradePath('/' . $user . '/files');
+			\OC_DB::commit();
+		}
+		\OC\Files\Cache\Upgrade::upgradeDone($user);
+	}
 }