/**
* Tries to obtain cached response.
*
* @param Request $request
*
* @return Response|null Will return cached content as response or null if there's nothing to return.
* @throws SecurityViolationException Tried to obtain cache entry using unsafe path. Generally it should never occur
* unless invalid Request is passed.
*/
public function retrieveCachedResponse(Request $request)
{
if ($this->isCacheable($request) !== true) {
return null;
}
$cacheElement = $this->cacheManager->getElement($request->getPathInfo());
if ($cacheElement === null) {
return null;
}
return CacheResponse::createFromElement($cacheElement, $this->addStatusHeader ? 'HIT,PHP' : null);
}
