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<?php
/**
* High-performance PHP process supervisor and load balancer written in Go
*
* @author Wolfy-J
*/
declare(strict_types=1);
namespace Spiral\RoadRunner\Http;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestFactoryInterface;
use Psr\Http\Message\ServerRequestInterface;
use Psr\Http\Message\StreamFactoryInterface;
use Psr\Http\Message\UploadedFileFactoryInterface;
use Psr\Http\Message\UploadedFileInterface;
use Spiral\RoadRunner\WorkerInterface;
/**
* Manages PSR-7 request and response.
*/
class PSR7Worker
{
private HttpWorker $httpWorker;
private ServerRequestFactoryInterface $requestFactory;
private StreamFactoryInterface $streamFactory;
private UploadedFileFactoryInterface $uploadsFactory;
/** @var mixed[] */
private array $originalServer = [];
/** @var string[] Valid values for HTTP protocol version */
private static array $allowedVersions = ['1.0', '1.1', '2',];
/**
* @param WorkerInterface $worker
* @param ServerRequestFactoryInterface $requestFactory
* @param StreamFactoryInterface $streamFactory
* @param UploadedFileFactoryInterface $uploadsFactory
*/
public function __construct(
WorkerInterface $worker,
ServerRequestFactoryInterface $requestFactory,
StreamFactoryInterface $streamFactory,
UploadedFileFactoryInterface $uploadsFactory
) {
$this->httpWorker = new HttpWorker($worker);
$this->requestFactory = $requestFactory;
$this->streamFactory = $streamFactory;
$this->uploadsFactory = $uploadsFactory;
$this->originalServer = $_SERVER;
}
/**
* @return WorkerInterface
*/
public function getWorker(): WorkerInterface
{
return $this->httpWorker->getWorker();
}
/**
* @return ServerRequestInterface|null
*/
public function waitRequest(): ?ServerRequestInterface
{
$httpRequest = $this->httpWorker->waitRequest();
if ($httpRequest === null) {
return null;
}
$_SERVER = $this->configureServer($httpRequest);
return $this->mapRequest($httpRequest, $_SERVER);
}
/**
* Send response to the application server.
*
* @param ResponseInterface $response
*/
public function respond(ResponseInterface $response): void
{
$this->httpWorker->respond(
$response->getStatusCode(),
$response->getBody()->__toString(),
$response->getHeaders()
);
}
/**
* Returns altered copy of _SERVER variable. Sets ip-address,
* request-time and other values.
*
* @param Request $request
* @return mixed[]
*/
protected function configureServer(Request $request): array
{
$server = $this->originalServer;
$server['REQUEST_URI'] = $request->uri;
$server['REQUEST_TIME'] = time();
$server['REQUEST_TIME_FLOAT'] = microtime(true);
$server['REMOTE_ADDR'] = $request->getRemoteAddr();
$server['REQUEST_METHOD'] = $request->method;
$server['HTTP_USER_AGENT'] = '';
foreach ($request->headers as $key => $value) {
$key = strtoupper(str_replace('-', '_', $key));
if (\in_array($key, ['CONTENT_TYPE', 'CONTENT_LENGTH'])) {
$server[$key] = implode(', ', $value);
} else {
$server['HTTP_' . $key] = implode(', ', $value);
}
}
return $server;
}
/**
* @param Request $httpRequest
* @param array $server
* @return ServerRequestInterface
*/
protected function mapRequest(Request $httpRequest, array $server): ServerRequestInterface
{
$request = $this->requestFactory->createServerRequest(
$httpRequest->method,
$httpRequest->uri,
$_SERVER
);
$request = $request
->withProtocolVersion(static::fetchProtocolVersion($httpRequest->protocol))
->withCookieParams($httpRequest->cookies)
->withQueryParams($httpRequest->query)
->withUploadedFiles($this->wrapUploads($httpRequest->uploads));
foreach ($httpRequest->attributes as $name => $value) {
$request = $request->withAttribute($name, $value);
}
foreach ($httpRequest->headers as $name => $value) {
$request = $request->withHeader($name, $value);
}
if ($httpRequest->parsed) {
return $request->withParsedBody($httpRequest->getParsedBody());
}
if ($httpRequest->body !== null) {
return $request->withBody($this->streamFactory->createStream($httpRequest->body));
}
return $request;
}
/**
* Wraps all uploaded files with UploadedFile.
*
* @param array[] $files
* @return UploadedFileInterface[]|mixed[]
*/
protected function wrapUploads(array $files): array
{
$result = [];
foreach ($files as $index => $f) {
if (!isset($f['name'])) {
$result[$index] = $this->wrapUploads($f);
continue;
}
if (UPLOAD_ERR_OK === $f['error']) {
$stream = $this->streamFactory->createStreamFromFile($f['tmpName']);
} else {
$stream = $this->streamFactory->createStream();
}
$result[$index] = $this->uploadsFactory->createUploadedFile(
$stream,
$f['size'],
$f['error'],
$f['name'],
$f['mime']
);
}
return $result;
}
/**
* Normalize HTTP protocol version to valid values
*
* @param string $version
* @return string
*/
private static function fetchProtocolVersion(string $version): string
{
$v = substr($version, 5);
if ($v === '2.0') {
return '2';
}
// Fallback for values outside of valid protocol versions
if (!in_array($v, static::$allowedVersions, true)) {
return '1.1';
}
return $v;
}
}
|
