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|
<?php
/**
* High-performance PHP process supervisor and load balancer written in Go
*
* @author Wolfy-J
*/
namespace Spiral\RoadRunner;
use Http\Factory\Diactoros;
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;
/**
* Manages PSR-7 request and response.
*/
class PSR7Client
{
/**
* @var Worker
*/
private $worker;
/**
* @var ServerRequestFactoryInterface
*/
private $requestFactory;
/**
* @var StreamFactoryInterface
*/
private $streamFactory;
/**
* @var UploadedFileFactoryInterface
*/
private $uploadsFactory;
/**
* @param Worker $worker
* @param ServerRequestFactoryInterface|null $requestFactory
* @param StreamFactoryInterface|null $streamFactory
* @param UploadedFileFactoryInterface|null $uploadsFactory
*/
public function __construct(
Worker $worker,
ServerRequestFactoryInterface $requestFactory = null,
StreamFactoryInterface $streamFactory = null,
UploadedFileFactoryInterface $uploadsFactory = null
) {
$this->worker = $worker;
$this->requestFactory = $requestFactory ?? new Diactoros\ServerRequestFactory();
$this->streamFactory = $streamFactory ?? new Diactoros\StreamFactory();
$this->uploadsFactory = $uploadsFactory ?? new Diactoros\UploadedFileFactory();
}
/**
* @return Worker
*/
public function getWorker(): Worker
{
return $this->worker;
}
/**
* @return ServerRequestInterface|null
*/
public function acceptRequest()
{
$body = $this->worker->receive($ctx);
if (empty($body) && empty($ctx)) {
// termination request
return null;
}
if (empty($ctx = json_decode($ctx, true))) {
// invalid context
return null;
}
$_SERVER = $this->configureServer($ctx);
$request = $this->requestFactory->createServerRequest(
$ctx['method'],
$ctx['uri'],
$_SERVER
);
parse_str($ctx['rawQuery'], $query);
$request = $request
->withCookieParams($ctx['cookies'])
->withProtocolVersion($ctx['protocol'])
->withQueryParams($query)
->withUploadedFiles($this->wrapUploads($ctx['uploads']));
foreach ($ctx['attributes'] as $name => $value) {
$request = $request->withAttribute($name, $value);
}
foreach ($ctx['headers'] as $name => $value) {
$request = $request->withHeader($name, $value);
}
if ($body !== null) {
$bodyStream = $this->streamFactory->createStream($body);
$bodyStream->write($body);
$request = $request->withBody($bodyStream);
}
if ($ctx['parsed']) {
$request = $request->withParsedBody(json_decode($body, true));
}
return $request;
}
/**
* Send response to the application server.
*
* @param ResponseInterface $response
*/
public function respond(ResponseInterface $response)
{
$headers = $response->getHeaders();
if (empty($headers)) {
// this is required to represent empty header set as map and not as array
$headers = new \stdClass();
}
$this->worker->send($response->getBody(), json_encode([
'status' => $response->getStatusCode(),
'headers' => $headers
]));
}
/**
* Returns altered copy of _SERVER variable. Sets ip-address,
* request-time and other values.
*
* @param array $ctx
* @return array
*/
protected function configureServer(array $ctx): array
{
$server = $_SERVER;
$server['REQUEST_TIME'] = time();
$server['REQUEST_TIME_FLOAT'] = microtime(true);
$server['REMOTE_ADDR'] = $ctx['attributes']['ipAddress'] ?? $ctx['remoteAddr'] ?? '127.0.0.1';
return $server;
}
/**
* Wraps all uploaded files with UploadedFile.
*
* @param array $files
*
* @return array
*/
private function wrapUploads($files): array
{
if (empty($files)) {
return [];
}
$result = [];
foreach ($files as $index => $f) {
if (!isset($f['name'])) {
$result[$index] = $this->wrapUploads($f);
continue;
}
$result[$index] = $this->uploadsFactory->createUploadedFile(
$this->streamFactory->createStreamFromFile($f['tmpName']),
$f['size'],
$f['error'],
$f['name'],
$f['mime']
);
}
return $result;
}
}
|
