mirror of
https://0xacab.org/radar/radar-wp.git
synced 2024-12-23 17:16:31 +01:00
423 lines
14 KiB
PHP
423 lines
14 KiB
PHP
<?php
|
|
|
|
namespace Guzzle\Http\Curl;
|
|
|
|
use Guzzle\Common\AbstractHasDispatcher;
|
|
use Guzzle\Common\Event;
|
|
use Guzzle\Http\Exception\MultiTransferException;
|
|
use Guzzle\Http\Exception\CurlException;
|
|
use Guzzle\Http\Message\RequestInterface;
|
|
use Guzzle\Http\Message\EntityEnclosingRequestInterface;
|
|
use Guzzle\Http\Exception\RequestException;
|
|
|
|
/**
|
|
* Send {@see RequestInterface} objects in parallel using curl_multi
|
|
*/
|
|
class CurlMulti extends AbstractHasDispatcher implements CurlMultiInterface
|
|
{
|
|
/** @var resource cURL multi handle. */
|
|
protected $multiHandle;
|
|
|
|
/** @var array Attached {@see RequestInterface} objects. */
|
|
protected $requests;
|
|
|
|
/** @var \SplObjectStorage RequestInterface to CurlHandle hash */
|
|
protected $handles;
|
|
|
|
/** @var array Hash mapping curl handle resource IDs to request objects */
|
|
protected $resourceHash;
|
|
|
|
/** @var array Queued exceptions */
|
|
protected $exceptions = array();
|
|
|
|
/** @var array Requests that succeeded */
|
|
protected $successful = array();
|
|
|
|
/** @var array cURL multi error values and codes */
|
|
protected $multiErrors = array(
|
|
CURLM_BAD_HANDLE => array('CURLM_BAD_HANDLE', 'The passed-in handle is not a valid CURLM handle.'),
|
|
CURLM_BAD_EASY_HANDLE => array('CURLM_BAD_EASY_HANDLE', "An easy handle was not good/valid. It could mean that it isn't an easy handle at all, or possibly that the handle already is in used by this or another multi handle."),
|
|
CURLM_OUT_OF_MEMORY => array('CURLM_OUT_OF_MEMORY', 'You are doomed.'),
|
|
CURLM_INTERNAL_ERROR => array('CURLM_INTERNAL_ERROR', 'This can only be returned if libcurl bugs. Please report it to us!')
|
|
);
|
|
|
|
/** @var float */
|
|
protected $selectTimeout;
|
|
|
|
public function __construct($selectTimeout = 1.0)
|
|
{
|
|
$this->selectTimeout = $selectTimeout;
|
|
$this->multiHandle = curl_multi_init();
|
|
// @codeCoverageIgnoreStart
|
|
if ($this->multiHandle === false) {
|
|
throw new CurlException('Unable to create multi handle');
|
|
}
|
|
// @codeCoverageIgnoreEnd
|
|
$this->reset();
|
|
}
|
|
|
|
public function __destruct()
|
|
{
|
|
if (is_resource($this->multiHandle)) {
|
|
curl_multi_close($this->multiHandle);
|
|
}
|
|
}
|
|
|
|
public function add(RequestInterface $request)
|
|
{
|
|
$this->requests[] = $request;
|
|
// If requests are currently transferring and this is async, then the
|
|
// request must be prepared now as the send() method is not called.
|
|
$this->beforeSend($request);
|
|
$this->dispatch(self::ADD_REQUEST, array('request' => $request));
|
|
|
|
return $this;
|
|
}
|
|
|
|
public function all()
|
|
{
|
|
return $this->requests;
|
|
}
|
|
|
|
public function remove(RequestInterface $request)
|
|
{
|
|
$this->removeHandle($request);
|
|
if (($index = array_search($request, $this->requests, true)) !== false) {
|
|
$request = $this->requests[$index];
|
|
unset($this->requests[$index]);
|
|
$this->requests = array_values($this->requests);
|
|
$this->dispatch(self::REMOVE_REQUEST, array('request' => $request));
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function reset($hard = false)
|
|
{
|
|
// Remove each request
|
|
if ($this->requests) {
|
|
foreach ($this->requests as $request) {
|
|
$this->remove($request);
|
|
}
|
|
}
|
|
|
|
$this->handles = new \SplObjectStorage();
|
|
$this->requests = $this->resourceHash = $this->exceptions = $this->successful = array();
|
|
}
|
|
|
|
public function send()
|
|
{
|
|
$this->perform();
|
|
$exceptions = $this->exceptions;
|
|
$successful = $this->successful;
|
|
$this->reset();
|
|
|
|
if ($exceptions) {
|
|
$this->throwMultiException($exceptions, $successful);
|
|
}
|
|
}
|
|
|
|
public function count()
|
|
{
|
|
return count($this->requests);
|
|
}
|
|
|
|
/**
|
|
* Build and throw a MultiTransferException
|
|
*
|
|
* @param array $exceptions Exceptions encountered
|
|
* @param array $successful Successful requests
|
|
* @throws MultiTransferException
|
|
*/
|
|
protected function throwMultiException(array $exceptions, array $successful)
|
|
{
|
|
$multiException = new MultiTransferException('Errors during multi transfer');
|
|
|
|
while ($e = array_shift($exceptions)) {
|
|
$multiException->addFailedRequestWithException($e['request'], $e['exception']);
|
|
}
|
|
|
|
// Add successful requests
|
|
foreach ($successful as $request) {
|
|
if (!$multiException->containsRequest($request)) {
|
|
$multiException->addSuccessfulRequest($request);
|
|
}
|
|
}
|
|
|
|
throw $multiException;
|
|
}
|
|
|
|
/**
|
|
* Prepare for sending
|
|
*
|
|
* @param RequestInterface $request Request to prepare
|
|
* @throws \Exception on error preparing the request
|
|
*/
|
|
protected function beforeSend(RequestInterface $request)
|
|
{
|
|
try {
|
|
$state = $request->setState(RequestInterface::STATE_TRANSFER);
|
|
if ($state == RequestInterface::STATE_TRANSFER) {
|
|
$this->addHandle($request);
|
|
} else {
|
|
// Requests might decide they don't need to be sent just before
|
|
// transfer (e.g. CachePlugin)
|
|
$this->remove($request);
|
|
if ($state == RequestInterface::STATE_COMPLETE) {
|
|
$this->successful[] = $request;
|
|
}
|
|
}
|
|
} catch (\Exception $e) {
|
|
// Queue the exception to be thrown when sent
|
|
$this->removeErroredRequest($request, $e);
|
|
}
|
|
}
|
|
|
|
private function addHandle(RequestInterface $request)
|
|
{
|
|
$handle = $this->createCurlHandle($request)->getHandle();
|
|
$this->checkCurlResult(
|
|
curl_multi_add_handle($this->multiHandle, $handle)
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Create a curl handle for a request
|
|
*
|
|
* @param RequestInterface $request Request
|
|
*
|
|
* @return CurlHandle
|
|
*/
|
|
protected function createCurlHandle(RequestInterface $request)
|
|
{
|
|
$wrapper = CurlHandle::factory($request);
|
|
$this->handles[$request] = $wrapper;
|
|
$this->resourceHash[(int) $wrapper->getHandle()] = $request;
|
|
|
|
return $wrapper;
|
|
}
|
|
|
|
/**
|
|
* Get the data from the multi handle
|
|
*/
|
|
protected function perform()
|
|
{
|
|
$event = new Event(array('curl_multi' => $this));
|
|
|
|
while ($this->requests) {
|
|
// Notify each request as polling
|
|
$blocking = $total = 0;
|
|
foreach ($this->requests as $request) {
|
|
++$total;
|
|
$event['request'] = $request;
|
|
$request->getEventDispatcher()->dispatch(self::POLLING_REQUEST, $event);
|
|
// The blocking variable just has to be non-falsey to block the loop
|
|
if ($request->getParams()->hasKey(self::BLOCKING)) {
|
|
++$blocking;
|
|
}
|
|
}
|
|
if ($blocking == $total) {
|
|
// Sleep to prevent eating CPU because no requests are actually pending a select call
|
|
usleep(500);
|
|
} else {
|
|
$this->executeHandles();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Execute and select curl handles
|
|
*/
|
|
private function executeHandles()
|
|
{
|
|
// The first curl_multi_select often times out no matter what, but is usually required for fast transfers
|
|
$selectTimeout = 0.001;
|
|
$active = false;
|
|
do {
|
|
while (($mrc = curl_multi_exec($this->multiHandle, $active)) == CURLM_CALL_MULTI_PERFORM);
|
|
$this->checkCurlResult($mrc);
|
|
$this->processMessages();
|
|
if ($active && curl_multi_select($this->multiHandle, $selectTimeout) === -1) {
|
|
// Perform a usleep if a select returns -1: https://bugs.php.net/bug.php?id=61141
|
|
usleep(150);
|
|
}
|
|
$selectTimeout = $this->selectTimeout;
|
|
} while ($active);
|
|
}
|
|
|
|
/**
|
|
* Process any received curl multi messages
|
|
*/
|
|
private function processMessages()
|
|
{
|
|
while ($done = curl_multi_info_read($this->multiHandle)) {
|
|
$request = $this->resourceHash[(int) $done['handle']];
|
|
try {
|
|
$this->processResponse($request, $this->handles[$request], $done);
|
|
$this->successful[] = $request;
|
|
} catch (\Exception $e) {
|
|
$this->removeErroredRequest($request, $e);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove a request that encountered an exception
|
|
*
|
|
* @param RequestInterface $request Request to remove
|
|
* @param \Exception $e Exception encountered
|
|
*/
|
|
protected function removeErroredRequest(RequestInterface $request, \Exception $e = null)
|
|
{
|
|
$this->exceptions[] = array('request' => $request, 'exception' => $e);
|
|
$this->remove($request);
|
|
$this->dispatch(self::MULTI_EXCEPTION, array('exception' => $e, 'all_exceptions' => $this->exceptions));
|
|
}
|
|
|
|
/**
|
|
* Check for errors and fix headers of a request based on a curl response
|
|
*
|
|
* @param RequestInterface $request Request to process
|
|
* @param CurlHandle $handle Curl handle object
|
|
* @param array $curl Array returned from curl_multi_info_read
|
|
*
|
|
* @throws CurlException on Curl error
|
|
*/
|
|
protected function processResponse(RequestInterface $request, CurlHandle $handle, array $curl)
|
|
{
|
|
// Set the transfer stats on the response
|
|
$handle->updateRequestFromTransfer($request);
|
|
// Check if a cURL exception occurred, and if so, notify things
|
|
$curlException = $this->isCurlException($request, $handle, $curl);
|
|
|
|
// Always remove completed curl handles. They can be added back again
|
|
// via events if needed (e.g. ExponentialBackoffPlugin)
|
|
$this->removeHandle($request);
|
|
|
|
if (!$curlException) {
|
|
if ($this->validateResponseWasSet($request)) {
|
|
$state = $request->setState(
|
|
RequestInterface::STATE_COMPLETE,
|
|
array('handle' => $handle)
|
|
);
|
|
// Only remove the request if it wasn't resent as a result of
|
|
// the state change
|
|
if ($state != RequestInterface::STATE_TRANSFER) {
|
|
$this->remove($request);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Set the state of the request to an error
|
|
$state = $request->setState(RequestInterface::STATE_ERROR, array('exception' => $curlException));
|
|
// Allow things to ignore the error if possible
|
|
if ($state != RequestInterface::STATE_TRANSFER) {
|
|
$this->remove($request);
|
|
}
|
|
|
|
// The error was not handled, so fail
|
|
if ($state == RequestInterface::STATE_ERROR) {
|
|
/** @var CurlException $curlException */
|
|
throw $curlException;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove a curl handle from the curl multi object
|
|
*
|
|
* @param RequestInterface $request Request that owns the handle
|
|
*/
|
|
protected function removeHandle(RequestInterface $request)
|
|
{
|
|
if (isset($this->handles[$request])) {
|
|
$handle = $this->handles[$request];
|
|
curl_multi_remove_handle($this->multiHandle, $handle->getHandle());
|
|
unset($this->handles[$request]);
|
|
unset($this->resourceHash[(int) $handle->getHandle()]);
|
|
$handle->close();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if a cURL transfer resulted in what should be an exception
|
|
*
|
|
* @param RequestInterface $request Request to check
|
|
* @param CurlHandle $handle Curl handle object
|
|
* @param array $curl Array returned from curl_multi_info_read
|
|
*
|
|
* @return CurlException|bool
|
|
*/
|
|
private function isCurlException(RequestInterface $request, CurlHandle $handle, array $curl)
|
|
{
|
|
if (CURLM_OK == $curl['result'] || CURLM_CALL_MULTI_PERFORM == $curl['result']) {
|
|
return false;
|
|
}
|
|
|
|
$handle->setErrorNo($curl['result']);
|
|
$e = new CurlException(sprintf('[curl] %s: %s [url] %s',
|
|
$handle->getErrorNo(), $handle->getError(), $handle->getUrl()));
|
|
$e->setCurlHandle($handle)
|
|
->setRequest($request)
|
|
->setCurlInfo($handle->getInfo())
|
|
->setError($handle->getError(), $handle->getErrorNo());
|
|
|
|
return $e;
|
|
}
|
|
|
|
/**
|
|
* Throw an exception for a cURL multi response if needed
|
|
*
|
|
* @param int $code Curl response code
|
|
* @throws CurlException
|
|
*/
|
|
private function checkCurlResult($code)
|
|
{
|
|
if ($code != CURLM_OK && $code != CURLM_CALL_MULTI_PERFORM) {
|
|
throw new CurlException(isset($this->multiErrors[$code])
|
|
? "cURL error: {$code} ({$this->multiErrors[$code][0]}): cURL message: {$this->multiErrors[$code][1]}"
|
|
: 'Unexpected cURL error: ' . $code
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @link https://github.com/guzzle/guzzle/issues/710
|
|
*/
|
|
private function validateResponseWasSet(RequestInterface $request)
|
|
{
|
|
if ($request->getResponse()) {
|
|
return true;
|
|
}
|
|
|
|
$body = $request instanceof EntityEnclosingRequestInterface
|
|
? $request->getBody()
|
|
: null;
|
|
|
|
if (!$body) {
|
|
$rex = new RequestException(
|
|
'No response was received for a request with no body. This'
|
|
. ' could mean that you are saturating your network.'
|
|
);
|
|
$rex->setRequest($request);
|
|
$this->removeErroredRequest($request, $rex);
|
|
} elseif (!$body->isSeekable() || !$body->seek(0)) {
|
|
// Nothing we can do with this. Sorry!
|
|
$rex = new RequestException(
|
|
'The connection was unexpectedly closed. The request would'
|
|
. ' have been retried, but attempting to rewind the'
|
|
. ' request body failed.'
|
|
);
|
|
$rex->setRequest($request);
|
|
$this->removeErroredRequest($request, $rex);
|
|
} else {
|
|
$this->remove($request);
|
|
// Add the request back to the batch to retry automatically.
|
|
$this->requests[] = $request;
|
|
$this->addHandle($request);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
}
|