<?php
namespace Aws\S3;
use Aws\CommandInterface;
use Aws\ResultInterface;
use Aws\S3\Exception\PermanentRedirectException;
use Psr\Http\Message\RequestInterface;
/**
* Throws a PermanentRedirectException exception when a 301 redirect is
* encountered.
*
* @internal
*/
class PermanentRedirectMiddleware
{
/** @var callable */
private $nextHandler;
/**
* Create a middleware wrapper function.
*
* @return callable
*/
public static function wrap()
{
return function (callable $handler) {
return new self($handler);
};
}
/**
* @param callable $nextHandler Next handler to invoke.
*/
public function __construct(callable $nextHandler)
{
$this->nextHandler = $nextHandler;
}
public function __invoke(CommandInterface $command, RequestInterface $request = null)
{
$next = $this->nextHandler;
return $next($command, $request)->then(
function (ResultInterface $result) use ($command) {
$status = isset($result['@metadata']['statusCode'])
? $result['@metadata']['statusCode']
: null;
if ($status == 301) {
throw new PermanentRedirectException(
'Encountered a permanent redirect while requesting '
. $result->search('"@metadata".effectiveUri') . '. '
. 'Are you sure you are using the correct region for '
. 'this bucket?',
$command,
['result' => $result]
);
}
return $result;
}
);
}
}
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