/**
* Store a response generated by a request.
*
* @param Request $request
* @param Response $response
* @param integer $ttl
*/
public function cache(Request $request, Response $response, $ttl = null)
{
// only cache GET and HEAD requests
if (!in_array($request->getMethod(), array('GET', 'HEAD'))) {
return;
}
// respect Cache-Control: no-cache
if ($request->isNoCache()) {
return;
}
// skip already cached response
if ($response->headers->has('X-ServerCache-Key')) {
return;
}
// set cache lifetime
if (is_null($ttl)) {
$ttl = $this->defaultTtl;
}
$expirationDate = date_create('NOW + ' . $ttl . ' seconds');
// save cache item
$key = $this->getCacheKey($request);
$metadataReponse = new MetadataResponse($response, array("expirationDate" => $expirationDate));
$item = new CacheItem($key, true, $metadataReponse);
$item->expiresAt($expirationDate);
$this->cache->save($item);
}
public function testExpiresAt()
{
$item = new CacheItem('test_key');
$this->assertNull($item->getExpirationDate());
$item->expiresAt(new \DateTime('+1 second'));
$this->assertEquals(new \DateTime('+1 second'), $item->getExpirationDate());
}
protected function fetchObjectFromCache($key)
{
$object = $this->collection->findOne(['_id' => $key]);
if ($object && isset($object->data)) {
$item = new CacheItem($key, true, unserialize($object->data));
if (isset($object->expiresAt)) {
$item->expiresAt($object->expiresAt->toDateTime());
}
return $item;
}
return false;
}
/**
* @inheritDoc
*/
public function put(string $key, $value, $expires) : bool
{
$item = new CacheItem($key);
$item->set($value);
if (is_int($expires) || $expires instanceof \DateInterval) {
$item->expiresAfter($expires);
} elseif ($expires instanceof \DateTimeInterface) {
// @codeCoverageIgnore
$item->expiresAt($expires);
}
return $this->pool->save($item);
}
