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<?php |
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declare(strict_types=1); |
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namespace Ecodev\Felix\Api; |
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use Doctrine\DBAL\Exception\DriverException; |
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use GraphQL\Error\DebugFlag; |
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use GraphQL\Executor\ExecutionResult; |
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use GraphQL\GraphQL; |
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use GraphQL\Server\ServerConfig; |
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use GraphQL\Server\StandardServer; |
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use GraphQL\Type\Schema; |
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use GraphQL\Validator\DocumentValidator; |
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use GraphQL\Validator\Rules\DisableIntrospection; |
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use Mezzio\Session\SessionMiddleware; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Throwable; |
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/** |
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* A thin wrapper to serve GraphQL via HTTP or CLI. |
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*/ |
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class Server |
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{ |
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private readonly StandardServer $server; |
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private readonly ServerConfig $config; |
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/** |
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* @param bool $debug if true, allows the introspection query, and dumps stacktrace in case of error |
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*/ |
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public function __construct(Schema $schema, bool $debug, array $rootValue = []) |
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{ |
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GraphQL::setDefaultFieldResolver(new FilteredFieldResolver()); |
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$debugFlag = DebugFlag::INCLUDE_DEBUG_MESSAGE | DebugFlag::INCLUDE_TRACE; |
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// Forbid introspection query in production mode, because our API is not meant to be publicly available |
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if (!$debug) { |
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$rule = new DisableIntrospection(DisableIntrospection::ENABLED); |
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DocumentValidator::addRule($rule); |
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} |
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$this->config = ServerConfig::create([ |
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'schema' => $schema, |
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'queryBatching' => true, |
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'debugFlag' => $debug ? $debugFlag : DebugFlag::NONE, |
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'errorsHandler' => function (array $errors, callable $formatter) { |
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$result = []; |
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foreach ($errors as $e) { |
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$result[] = $this->handleError($e, $formatter); |
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} |
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return $result; |
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}, |
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'rootValue' => $rootValue, |
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]); |
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$this->server = new StandardServer($this->config); |
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} |
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/** |
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* @return ExecutionResult|ExecutionResult[] |
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*/ |
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public function execute(ServerRequestInterface $request): array|ExecutionResult |
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{ |
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if (!$request->getParsedBody()) { |
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/** @var array $parsedBody */ |
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$parsedBody = json_decode($request->getBody()->getContents(), true) ?? []; |
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$request = $request->withParsedBody($parsedBody); |
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} |
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// Affect it to global request, so it is available for log purpose in case of error |
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$_REQUEST = $request->getParsedBody(); |
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// Set current session as the only context we will ever need |
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$session = $request->getAttribute(SessionMiddleware::SESSION_ATTRIBUTE); |
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$this->config->setContext($session); |
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return $this->server->executePsrRequest($request); |
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} |
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/** |
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* Send response to CLI. |
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*/ |
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public function sendCli(ExecutionResult $result): void |
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{ |
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echo json_encode($result, JSON_PRETTY_PRINT) . PHP_EOL; |
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} |
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/** |
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* Custom error handler to log in DB and show trigger messages to end-user. |
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*/ |
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private function handleError(Throwable $exception, callable $formatter): array |
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{ |
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// Always log exception in DB (and by email) |
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_log()->err($exception->__toString(), ['exception' => $exception]); |
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// If we are absolutely certain that the error comes from one of our trigger with a custom message for end-user, |
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// then wrap the exception to make it showable to the end-user |
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$previous = $exception->getPrevious(); |
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if ($previous instanceof DriverException && $previous->getSQLState() === '45000' && $previous->getPrevious() && $previous->getPrevious()->getPrevious()) { |
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$message = $previous->getPrevious()->getPrevious()->getMessage(); |
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$userMessage = (string) preg_replace('~SQLSTATE\[45000]: <<Unknown error>>: \d+ ~', '', $message, -1, $count); |
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if ($count === 1) { |
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$exception = new Exception($userMessage, 0, $exception); |
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} |
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} |
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return $formatter($exception); |
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} |
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} |
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Ecodev /
felix
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