/**
* Returns the connection currently associated to a given slot.
*
* @param int $slot Slot index.
*
* @throws \OutOfBoundsException
*
* @return NodeConnectionInterface
*/
public function getConnectionBySlot($slot)
{
if (!SlotMap::isValid($slot)) {
throw new \OutOfBoundsException("Invalid slot [{$slot}].");
}
if (isset($this->slots[$slot])) {
return $this->slots[$slot];
}
$connectionID = $this->guessNode($slot);
if (!($connection = $this->getConnectionById($connectionID))) {
$connection = $this->createConnection($connectionID);
$this->pool[$connectionID] = $connection;
}
return $this->slots[$slot] = $connection;
}
