<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpClient\Response;
use Symfony\Component\HttpClient\Chunk\DataChunk;
use Symfony\Component\HttpClient\Chunk\LastChunk;
use Symfony\Component\HttpClient\Exception\TransportException;
use Symfony\Contracts\HttpClient\ChunkInterface;
use Symfony\Contracts\HttpClient\HttpClientInterface;
use Symfony\Contracts\HttpClient\ResponseInterface;
/**
* A DTO to work with AsyncResponse.
*
* @author Nicolas Grekas <p@tchwork.com>
*/
final class AsyncContext
{
/** @var callable|null */
private $passthru;
private ResponseInterface $response;
private array $info = [];
/**
* @param resource|null $content
*/
public function __construct(
?callable &$passthru,
private HttpClientInterface $client,
ResponseInterface &$response,
array &$info,
private $content,
private int $offset,
) {
$this->passthru = &$passthru;
$this->response = &$response;
$this->info = &$info;
}
/**
* Returns the HTTP status without consuming the response.
*/
public function getStatusCode(): int
{
return $this->response->getInfo('http_code');
}
/**
* Returns the headers without consuming the response.
*/
public function getHeaders(): array
{
$headers = [];
foreach ($this->response->getInfo('response_headers') as $h) {
if (11 <= \strlen($h) && '/' === $h[4] && preg_match('#^HTTP/\d+(?:\.\d+)? ([123456789]\d\d)(?: |$)#', $h, $m)) {
$headers = [];
} elseif (2 === \count($m = explode(':', $h, 2))) {
$headers[strtolower($m[0])][] = ltrim($m[1]);
}
}
return $headers;
}
/**
* @return resource|null The PHP stream resource where the content is buffered, if it is
*/
public function getContent()
{
return $this->content;
}
/**
* Creates a new chunk of content.
*/
public function createChunk(string $data): ChunkInterface
{
return new DataChunk($this->offset, $data);
}
/**
* Pauses the request for the given number of seconds.
*/
public function pause(float $duration): void
{
if (\is_callable($pause = $this->response->getInfo('pause_handler'))) {
$pause($duration);
} elseif (0 < $duration) {
usleep((int) (1E6 * $duration));
}
}
/**
* Cancels the request and returns the last chunk to yield.
*/
public function cancel(): ChunkInterface
{
$this->info['canceled'] = true;
$this->info['error'] = 'Response has been canceled.';
$this->response->cancel();
return new LastChunk();
}
/**
* Returns the current info of the response.
*/
public function getInfo(?string $type = null): mixed
{
if (null !== $type) {
return $this->info[$type] ?? $this->response->getInfo($type);
}
return $this->info + $this->response->getInfo();
}
/**
* Attaches an info to the response.
*
* @return $this
*/
public function setInfo(string $type, mixed $value): static
{
if ('canceled' === $type && $value !== $this->info['canceled']) {
throw new \LogicException('You cannot set the "canceled" info directly.');
}
if (null === $value) {
unset($this->info[$type]);
} else {
$this->info[$type] = $value;
}
return $this;
}
/**
* Returns the currently processed response.
*/
public function getResponse(): ResponseInterface
{
return $this->response;
}
/**
* Replaces the currently processed response by doing a new request.
*/
public function replaceRequest(string $method, string $url, array $options = []): ResponseInterface
{
$this->info['previous_info'][] = $info = $this->response->getInfo();
if (null !== $onProgress = $options['on_progress'] ?? null) {
$thisInfo = &$this->info;
$options['on_progress'] = static function (int $dlNow, int $dlSize, array $info) use (&$thisInfo, $onProgress) {
$onProgress($dlNow, $dlSize, $thisInfo + $info);
};
}
if (0 < ($info['max_duration'] ?? 0) && 0 < ($info['total_time'] ?? 0)) {
if (0 >= $options['max_duration'] = $info['max_duration'] - $info['total_time']) {
throw new TransportException(\sprintf('Max duration was reached for "%s".', $info['url']));
}
}
return $this->response = $this->client->request($method, $url, ['buffer' => false] + $options);
}
/**
* Replaces the currently processed response by another one.
*/
public function replaceResponse(ResponseInterface $response): ResponseInterface
{
$this->info['previous_info'][] = $this->response->getInfo();
return $this->response = $response;
}
/**
* Replaces or removes the chunk filter iterator.
*
* @param ?callable(ChunkInterface, self): ?\Iterator $passthru
*/
public function passthru(?callable $passthru = null): void
{
$this->passthru = $passthru ?? static function ($chunk, $context) {
$context->passthru = null;
yield $chunk;
};
}
}
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