Add a Sabre plugin that emits an event for apps

apps/files/appinfo/remote.php

@@ -39,7 +39,8 @@ $serverFactory = new \OC\Connector\Sabre\ServerFactory(
 	\OC::$server->getDatabaseConnection(),
 	\OC::$server->getUserSession(),
 	\OC::$server->getMountManager(),
-	\OC::$server->getTagManager()
+	\OC::$server->getTagManager(),
+	\OC::$server->getEventDispatcher()
 );
 
 // Backends

apps/files_sharing/publicwebdav.php

@@ -39,7 +39,8 @@ $serverFactory = new \OC\Connector\Sabre\ServerFactory(
 	\OC::$server->getDatabaseConnection(),
 	\OC::$server->getUserSession(),
 	\OC::$server->getMountManager(),
-	\OC::$server->getTagManager()
+	\OC::$server->getTagManager(),
+	\OC::$server->getEventDispatcher()
 );
 
 $requestUri = \OC::$server->getRequest()->getRequestUri();

lib/private/connector/sabre/listenerplugin.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * @author Joas Schilling <nickvergessen@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, 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\Connector\Sabre;
+
+use Sabre\DAV\Server;
+use Sabre\DAV\ServerPlugin;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
+
+class ListenerPlugin extends ServerPlugin {
+	/** @var EventDispatcherInterface */
+	protected $dispatcher;
+
+	/**
+	 * @param EventDispatcherInterface $dispatcher
+	 */
+	public function __construct(EventDispatcherInterface $dispatcher) {
+		$this->dispatcher = $dispatcher;
+	}
+
+	/**
+	 * This initialize the plugin
+	 *
+	 * @param Server $server
+	 */
+	public function initialize(Server $server) {
+		$server->on('beforeMethod', array($this, 'emitListener'), 15);
+	}
+
+	/**
+	 * This method is called before any HTTP method and returns http status code 503
+	 * in case the system is in maintenance mode.
+	 *
+	 * @return bool
+	 */
+	public function emitListener() {
+		$this->dispatcher->dispatch('OC\Connector\Sabre::beforeMethod');
+
+		return true;
+	}
+}

lib/private/connector/sabre/serverfactory.php

@@ -28,6 +28,7 @@ use OCP\ILogger;
 use OCP\ITagManager;
 use OCP\IUserSession;
 use Sabre\DAV\Auth\Backend\BackendInterface;
+use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 
 class ServerFactory {
 	public function __construct(
@@ -36,7 +37,8 @@ class ServerFactory {
 		IDBConnection $databaseConnection,
 		IUserSession $userSession,
 		IMountManager $mountManager,
-		ITagManager $tagManager
+		ITagManager $tagManager,
+		EventDispatcherInterface $dispatcher
 	) {
 		$this->config = $config;
 		$this->logger = $logger;
@@ -44,6 +46,7 @@ class ServerFactory {
 		$this->userSession = $userSession;
 		$this->mountManager = $mountManager;
 		$this->tagManager = $tagManager;
+		$this->dispatcher = $dispatcher;
 	}
 
 	/**
@@ -71,6 +74,7 @@ class ServerFactory {
 		$server->addPlugin(new \OC\Connector\Sabre\FilesPlugin($objectTree));
 		$server->addPlugin(new \OC\Connector\Sabre\ExceptionLoggerPlugin('webdav', $this->logger));
 		$server->addPlugin(new \OC\Connector\Sabre\LockPlugin($objectTree));
+		$server->addPlugin(new \OC\Connector\Sabre\ListenerPlugin($this->dispatcher));
 
 		// wait with registering these until auth is handled and the filesystem is setup
 		$server->on('beforeMethod', function () use ($server, $objectTree, $viewCallBack) {

tests/lib/connector/sabre/requesttest/requesttest.php

@@ -45,7 +45,8 @@ abstract class RequestTest extends TestCase {
 			\OC::$server->getDatabaseConnection(),
 			\OC::$server->getUserSession(),
 			\OC::$server->getMountManager(),
-			\OC::$server->getTagManager()
+			\OC::$server->getTagManager(),
+			\OC::$server->getEventDispatcher()
 		);
 	}