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<?php |
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declare(strict_types=1); |
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namespace Usox\JsonSchemaApi\Dispatch; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Log\LoggerInterface; |
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use stdClass; |
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use Teapot\StatusCode\Http; |
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use Usox\JsonSchemaApi\Contract\ApiMethodInterface; |
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use Usox\JsonSchemaApi\Contract\MethodProviderInterface; |
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use Usox\JsonSchemaApi\Dispatch\Exception\SchemaInvalidException; |
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use Usox\JsonSchemaApi\Dispatch\Exception\SchemaNotFoundException; |
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use Usox\JsonSchemaApi\Dispatch\Exception\SchemaNotLoadableException; |
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use Usox\JsonSchemaApi\Exception\ApiMethodException; |
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use Usox\JsonSchemaApi\Exception\MethodNotFoundException; |
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use Usox\JsonSchemaApi\Exception\RequestMalformedException; |
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use Usox\JsonSchemaApi\Exception\ResponseMalformedException; |
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/** |
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* Handles the life cycle of a method call |
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* - load method handler |
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* - validate input |
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* - execute handler |
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* - validate output |
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*/ |
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final readonly class MethodDispatcher implements MethodDispatcherInterface |
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{ |
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public function __construct( |
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private SchemaLoaderInterface $schemaLoader, |
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private MethodValidatorInterface $methodValidator, |
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private MethodProviderInterface $methodProvider, |
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private ?LoggerInterface $logger |
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) { |
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} |
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/** |
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* @return array<mixed, mixed> |
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* |
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* @throws MethodNotFoundException |
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* @throws ApiMethodException |
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* @throws RequestMalformedException |
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* @throws ResponseMalformedException |
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* @throws SchemaInvalidException |
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* @throws SchemaNotFoundException |
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* @throws SchemaNotLoadableException |
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*/ |
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public function dispatch( |
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ServerRequestInterface $request, |
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stdClass $input |
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): array { |
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// Get the method from the request and perform lookup |
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$methodName = $input->method; |
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$this->logger?->debug( |
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'Api method call', |
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[ |
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'method' => $methodName, |
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'input' => $input->parameter |
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] |
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); |
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$handler = $this->methodProvider->lookup($methodName); |
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if (!$handler instanceof ApiMethodInterface) { |
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throw new MethodNotFoundException( |
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'Method not found', |
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Http::BAD_REQUEST |
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); |
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} |
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$schemaContent = $this->schemaLoader->load($handler->getSchemaFile()); |
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$this->methodValidator->validateInput($schemaContent, $input); |
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$this->logger?->info( |
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'Api method call', |
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[ |
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'method' => $methodName, |
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] |
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); |
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$response = $handler->handle($request, $input->parameter); |
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$this->methodValidator->validateOutput( |
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$schemaContent, |
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$response |
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); |
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return $response; |
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} |
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} |
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