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110 lines
2.8 KiB
PHP
110 lines
2.8 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* SPDX-FileCopyrightText: 2020 Nextcloud GmbH and Nextcloud contributors
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OC\Http\WellKnown;
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use OC\AppFramework\Bootstrap\Coordinator;
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use OC\AppFramework\Bootstrap\ServiceRegistration;
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use OCP\AppFramework\QueryException;
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use OCP\Http\WellKnown\IHandler;
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use OCP\Http\WellKnown\IRequestContext;
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use OCP\Http\WellKnown\IResponse;
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use OCP\Http\WellKnown\JrdResponse;
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use OCP\IRequest;
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use OCP\IServerContainer;
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use Psr\Log\LoggerInterface;
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use RuntimeException;
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use function array_reduce;
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class RequestManager {
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/** @var Coordinator */
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private $coordinator;
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/** @var IServerContainer */
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private $container;
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/** @var LoggerInterface */
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private $logger;
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public function __construct(Coordinator $coordinator,
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IServerContainer $container,
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LoggerInterface $logger) {
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$this->coordinator = $coordinator;
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$this->container = $container;
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$this->logger = $logger;
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}
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public function process(string $service, IRequest $request): ?IResponse {
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$handlers = $this->loadHandlers();
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$context = new class($request) implements IRequestContext {
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/** @var IRequest */
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private $request;
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public function __construct(IRequest $request) {
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$this->request = $request;
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}
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public function getHttpRequest(): IRequest {
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return $this->request;
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}
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};
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$subject = $request->getParam('resource');
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$initialResponse = new JrdResponse($subject ?? '');
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$finalResponse = array_reduce($handlers, function (?IResponse $previousResponse, IHandler $handler) use ($context, $service) {
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return $handler->handle($service, $context, $previousResponse);
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}, $initialResponse);
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if ($finalResponse instanceof JrdResponse && $finalResponse->isEmpty()) {
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return null;
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}
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return $finalResponse;
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}
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/**
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* @return IHandler[]
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*/
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private function loadHandlers(): array {
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$context = $this->coordinator->getRegistrationContext();
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if ($context === null) {
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throw new RuntimeException('Well known handlers requested before the apps had been fully registered');
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}
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$registrations = $context->getWellKnownHandlers();
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$this->logger->debug(count($registrations) . ' well known handlers registered');
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return array_filter(
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array_map(function (ServiceRegistration $registration) {
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/** @var ServiceRegistration<IHandler> $registration */
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$class = $registration->getService();
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try {
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$handler = $this->container->get($class);
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if (!($handler) instanceof IHandler) {
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$this->logger->error("Well known handler $class is invalid");
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return null;
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}
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return $handler;
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} catch (QueryException $e) {
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$this->logger->error("Could not load well known handler $class", [
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'exception' => $e,
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'app' => $registration->getAppId(),
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]);
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return null;
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}
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}, $registrations)
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);
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}
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}
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