/**
* If possible, set a cache response on a cURL exception
*
* @param Event $event
*
* @return null
*/
public function onRequestException(Event $event)
{
if (!$event['exception'] instanceof CurlException) {
return;
}
$request = $event['request'];
if (!$this->canCache->canCacheRequest($request)) {
return;
}
if ($response = $this->storage->fetch($request)) {
$response->setHeader('Age', time() - strtotime($response->getDate() ?: 'now'));
if (!$this->canResponseSatisfyFailedRequest($request, $response)) {
return;
}
$request->getParams()->set('cache.hit', 'error');
$request->setResponse($response);
$this->addResponseHeaders($request, $response);
$event->stopPropagation();
}
}
/**
* Check if a response in cache will satisfy the request before sending
*
* @param Event $event
*/
public function onRequestBeforeSend(Event $event)
{
$request = $event['request'];
if (!$this->canCache->canCacheRequest($request)) {
return;
}
$hashKey = $this->keyProvider->getCacheKey($request);
$this->cached[$request] = $hashKey;
// If the cached data was found, then make the request into a
// manually set request
if ($cachedData = $this->storage->fetch($hashKey)) {
unset($this->cached[$request]);
$response = new Response($cachedData[0], $cachedData[1], $cachedData[2]);
$response->setHeader('Age', time() - strtotime($response->getDate() ?: 'now'));
if (!$response->hasHeader('X-Guzzle-Cache')) {
$response->setHeader('X-Guzzle-Cache', "key={$hashKey}");
}
// Validate that the response satisfies the request
if ($this->canResponseSatisfyRequest($request, $response)) {
$request->setResponse($response);
}
}
}
