93 lines
2.9 KiB
PHP
93 lines
2.9 KiB
PHP
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<?php
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2021 (original work) Open Assessment Technologies SA
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*/
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declare(strict_types=1);
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namespace oat\tao\model\Middleware;
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use GuzzleHttp\Psr7\Response;
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use LogicException;
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use oat\oatbox\service\ConfigurableService;
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use Psr\Http\Message\RequestInterface;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\ServerRequestInterface;
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use Psr\Http\Server\MiddlewareInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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use Relay\Relay;
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class MiddlewareRequestHandler extends ConfigurableService implements RequestHandlerInterface
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{
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public const SERVICE_ID = 'tao/MiddlewareRequestHandler';
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public const OPTION_MAP = 'map';
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/** @var ResponseInterface|null */
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private $originalResponse;
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public function handle(ServerRequestInterface $request): ResponseInterface
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{
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$queue = $this->build($request);
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return (new Relay($queue))->handle($request);
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}
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/**
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* @return MiddlewareInterface[]
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*/
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private function build(RequestInterface $request): array
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{
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$mapping = [];
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foreach ($this->getMatchedMiddlewareReferences($request) as $middlewareClass) {
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$middleware = $this->getServiceLocator()->get($middlewareClass);
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if (!$middleware instanceof MiddlewareInterface) {
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throw new LogicException(sprintf('Incorrect middleware configuration for %s', $middlewareClass));
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}
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$mapping[] = $middleware;
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}
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return array_merge(
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[
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function ($request, $next) {
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return $this->originalResponse ?? new Response();
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}
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],
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$mapping,
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[
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function ($request, $next) {
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return new Response();
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}
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]
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);
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}
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public function withOriginalResponse(ResponseInterface $response): self
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{
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$this->originalResponse = $response;
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return $this;
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}
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/**
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* @return string[]
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*/
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private function getMatchedMiddlewareReferences(RequestInterface $request): array
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{
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return $this->getOption(self::OPTION_MAP, [])[$request->getUri()->getPath()] ?? [];
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}
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}
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