81 lines
2.6 KiB
PHP
81 lines
2.6 KiB
PHP
<?php
|
|
|
|
namespace Guzzle\Plugin\Async;
|
|
|
|
use Guzzle\Common\Event;
|
|
use Guzzle\Http\Message\Response;
|
|
use Guzzle\Http\Exception\CurlException;
|
|
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
|
|
|
|
/**
|
|
* Sends requests but does not wait for the response
|
|
*/
|
|
class AsyncPlugin implements EventSubscriberInterface
|
|
{
|
|
public static function getSubscribedEvents()
|
|
{
|
|
return array(
|
|
'request.before_send' => 'onBeforeSend',
|
|
'request.exception' => 'onRequestTimeout',
|
|
'request.sent' => 'onRequestSent',
|
|
'curl.callback.progress' => 'onCurlProgress'
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Event used to ensure that progress callback are emitted from the curl handle's request mediator.
|
|
*
|
|
* @param Event $event
|
|
*/
|
|
public function onBeforeSend(Event $event)
|
|
{
|
|
// Ensure that progress callbacks are dispatched
|
|
$event['request']->getCurlOptions()->set('progress', true);
|
|
}
|
|
|
|
/**
|
|
* Event emitted when a curl progress function is called. When the amount of data uploaded == the amount of data to
|
|
* upload OR any bytes have been downloaded, then time the request out after 1ms because we're done with
|
|
* transmitting the request, and tell curl not download a body.
|
|
*
|
|
* @param Event $event
|
|
*/
|
|
public function onCurlProgress(Event $event)
|
|
{
|
|
if ($event['handle'] &&
|
|
($event['downloaded'] || ($event['uploaded'] && $event['upload_size'] === $event['uploaded']))
|
|
) {
|
|
// Timeout after 1ms
|
|
curl_setopt($event['handle'], CURLOPT_TIMEOUT_MS, 1);
|
|
// Even if the response is quick, tell curl not to download the body
|
|
curl_setopt($event['handle'], CURLOPT_NOBODY, true);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Event emitted when a curl exception occurs. Ignore the exception and set a mock response.
|
|
*
|
|
* @param Event $event
|
|
*/
|
|
public function onRequestTimeout(Event $event)
|
|
{
|
|
if ($event['exception'] instanceof CurlException) {
|
|
$event['request']->setResponse(new Response(200, array(
|
|
'X-Guzzle-Async' => 'Did not wait for the response'
|
|
)));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Event emitted when a request completes because it took less than 1ms. Add an X-Guzzle-Async header to notify the
|
|
* caller that there is no body in the message.
|
|
*
|
|
* @param Event $event
|
|
*/
|
|
public function onRequestSent(Event $event)
|
|
{
|
|
// Let the caller know this was meant to be async
|
|
$event['request']->getResponse()->setHeader('X-Guzzle-Async', 'Did not wait for the response');
|
|
}
|
|
}
|