/**
* Returns a list of nodes from the hashring.
*
* @param IDistributionStrategy $ring Hashring instance.
* @param int $iterations Number of nodes to fetch.
* @return array Nodes from the hashring.
*/
protected function getNodes(IDistributionStrategy $ring, $iterations = 10)
{
$nodes = array();
for ($i = 0; $i < $iterations; $i++) {
$key = $ring->generateKey($i * $i);
$nodes[] = $ring->get($key);
}
return $nodes;
}
public function getHash(IDistributionStrategy $distributor)
{
if (isset($this->_hash)) {
return $this->_hash;
} else {
if (isset($this->_arguments[0])) {
// TODO: should we throw an exception if the command does
// not support sharding?
$key = $this->_arguments[0];
$start = strpos($key, '{');
$end = strpos($key, '}');
if ($start !== false && $end !== false) {
$key = substr($key, ++$start, $end - $start);
}
$this->_hash = $distributor->generateKey($key);
return $this->_hash;
}
}
return null;
}
