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86 lines
3.1 KiB
PHP
86 lines
3.1 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors
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* SPDX-FileCopyrightText: 2016 ownCloud, Inc.
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* SPDX-License-Identifier: AGPL-3.0-only
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*/
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namespace OCP\AppFramework;
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use Exception;
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use OCP\AppFramework\Http\Response;
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/**
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* Middleware is used to provide hooks before or after controller methods and
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* deal with possible exceptions raised in the controller methods.
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* They're modeled after Django's middleware system:
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* https://docs.djangoproject.com/en/dev/topics/http/middleware/
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* @since 6.0.0
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*/
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abstract class Middleware {
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/**
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* This is being run in normal order before the controller is being
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* called which allows several modifications and checks
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*
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* @param Controller $controller the controller that is being called
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* @param string $methodName the name of the method that will be called on
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* the controller
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* @return void
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* @since 6.0.0
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*/
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public function beforeController(Controller $controller, string $methodName) {
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}
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/**
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* This is being run when either the beforeController method or the
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* controller method itself is throwing an exception. The middleware is
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* asked in reverse order to handle the exception and to return a response.
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* If the response is null, it is assumed that the exception could not be
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* handled and the error will be thrown again
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*
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* @param Controller $controller the controller that is being called
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* @param string $methodName the name of the method that will be called on
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* the controller
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* @param Exception $exception the thrown exception
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* @throws Exception the passed in exception if it can't handle it
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* @return Response a Response object in case that the exception was handled
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* @since 6.0.0
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*/
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public function afterException(Controller $controller, string $methodName, Exception $exception) {
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throw $exception;
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}
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/**
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* This is being run after a successful controllermethod call and allows
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* the manipulation of a Response object. The middleware is run in reverse order
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*
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* @param Controller $controller the controller that is being called
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* @param string $methodName the name of the method that will be called on
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* the controller
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* @param Response $response the generated response from the controller
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* @return Response a Response object
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* @since 6.0.0
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*/
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public function afterController(Controller $controller, string $methodName, Response $response) {
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return $response;
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}
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/**
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* This is being run after the response object has been rendered and
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* allows the manipulation of the output. The middleware is run in reverse order
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*
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* @param Controller $controller the controller that is being called
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* @param string $methodName the name of the method that will be called on
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* the controller
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* @param string $output the generated output from a response
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* @return string the output that should be printed
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* @since 6.0.0
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*/
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public function beforeOutput(Controller $controller, string $methodName, string $output) {
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return $output;
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}
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}
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