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authorThomas Müller <thomas.mueller@tmit.eu>2013-09-25 13:36:30 +0200
committerThomas Müller <thomas.mueller@tmit.eu>2013-09-30 16:36:59 +0200
commit9c9dc276b7a1d2592c4fb0a887888632dc1f1e29 (patch)
treebbe3aed3e09c31c68806bdb8acffef70ba08f51c /lib/private/appframework/middleware/middleware.php
parenta711399e62d5a9f14d4b748efe4354ee37e61f13 (diff)
downloadnextcloud-server-9c9dc276b7a1d2592c4fb0a887888632dc1f1e29.tar.gz
nextcloud-server-9c9dc276b7a1d2592c4fb0a887888632dc1f1e29.zip
move the private namespace OC into lib/private - OCP will stay in lib/public
Conflicts: lib/private/vcategories.php
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+<?php
+
+/**
+ * ownCloud - App Framework
+ *
+ * @author Bernhard Posselt
+ * @copyright 2012 Bernhard Posselt nukeawhale@gmail.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+
+namespace OC\AppFramework\Middleware;
+
+use OCP\AppFramework\Http\Response;
+
+
+/**
+ * Middleware is used to provide hooks before or after controller methods and
+ * deal with possible exceptions raised in the controller methods.
+ * They're modeled after Django's middleware system:
+ * https://docs.djangoproject.com/en/dev/topics/http/middleware/
+ */
+abstract class Middleware {
+
+
+ /**
+ * This is being run in normal order before the controller is being
+ * called which allows several modifications and checks
+ *
+ * @param Controller $controller the controller that is being called
+ * @param string $methodName the name of the method that will be called on
+ * the controller
+ */
+ public function beforeController($controller, $methodName){
+
+ }
+
+
+ /**
+ * This is being run when either the beforeController method or the
+ * controller method itself is throwing an exception. The middleware is
+ * asked in reverse order to handle the exception and to return a response.
+ * If the response is null, it is assumed that the exception could not be
+ * handled and the error will be thrown again
+ *
+ * @param Controller $controller the controller that is being called
+ * @param string $methodName the name of the method that will be called on
+ * the controller
+ * @param \Exception $exception the thrown exception
+ * @throws \Exception the passed in exception if it cant handle it
+ * @return Response a Response object in case that the exception was handled
+ */
+ public function afterException($controller, $methodName, \Exception $exception){
+ throw $exception;
+ }
+
+
+ /**
+ * This is being run after a successful controllermethod call and allows
+ * the manipulation of a Response object. The middleware is run in reverse order
+ *
+ * @param Controller $controller the controller that is being called
+ * @param string $methodName the name of the method that will be called on
+ * the controller
+ * @param Response $response the generated response from the controller
+ * @return Response a Response object
+ */
+ public function afterController($controller, $methodName, Response $response){
+ return $response;
+ }
+
+
+ /**
+ * This is being run after the response object has been rendered and
+ * allows the manipulation of the output. The middleware is run in reverse order
+ *
+ * @param Controller $controller the controller that is being called
+ * @param string $methodName the name of the method that will be called on
+ * the controller
+ * @param string $output the generated output from a response
+ * @return string the output that should be printed
+ */
+ public function beforeOutput($controller, $methodName, $output){
+ return $output;
+ }
+
+}