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<?php
/**
* High-performance PHP process supervisor and load balancer written in Go
*
* @author Alex Bond
*/
declare(strict_types=1);
namespace Spiral\RoadRunner\Http;
use Spiral\RoadRunner\WorkerInterface;
class HttpWorker
{
/** @var WorkerInterface */
private WorkerInterface $worker;
/**
* @param WorkerInterface $worker
*/
public function __construct(WorkerInterface $worker)
{
$this->worker = $worker;
}
/**
* @return WorkerInterface
*/
public function getWorker(): WorkerInterface
{
return $this->worker;
}
/**
* Wait for incoming http request.
*
* @return Request|null
*/
public function waitRequest(): ?Request
{
$payload = $this->getWorker()->waitPayload();
if (empty($payload->body) && empty($payload->header)) {
// termination request
return null;
}
$request = new Request();
$request->body = $payload->body;
$context = json_decode($payload->header, true);
if ($context === null) {
// invalid context
return null;
}
$this->hydrateRequest($request, $context);
return $request;
}
/**
* Send response to the application server.
*
* @param int $status Http status code
* @param string $body Body of response
* @param string[][] $headers An associative array of the message's headers. Each
* key MUST be a header name, and each value MUST be an array of strings
* for that header.
*/
public function respond(int $status, string $body, array $headers = []): void
{
if ($headers === []) {
// this is required to represent empty header set as map and not as array
$headers = new \stdClass();
}
$this->getWorker()->send(
$body,
(string) json_encode(['status' => $status, 'headers' => $headers])
);
}
/**
* @param Request $request
* @param array $context
*/
private function hydrateRequest(Request $request, array $context): void
{
$request->remoteAddr = $context['remoteAddr'];
$request->protocol = $context['protocol'];
$request->method = $context['method'];
$request->uri = $context['uri'];
$request->attributes = $context['attributes'];
$request->headers = $context['headers'];
$request->cookies = $context['cookies'];
$request->uploads = $context['uploads'];
parse_str($context['rawQuery'], $request->query);
// indicates that body was parsed
$request->parsed = $context['parsed'];
}
}
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