IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Changing or replacing Selector Classedit
Changing the selector is also very simple: instantiate the client with your chosen implementation:
$params['selectorClass'] = '\Elasticsearch\ConnectionPool\Selectors\RandomSelector'; $client = new Elasticsearch\Client($params);
The client will now query random nodes. It is sometimes useful to build a custom selector which services your particular cluster with custom business logic.
For example, we can build a new selector that only selects the first connection each time. This is obviously not a good selector (!!!), but it demonstrates the concept well:
namespace MyProject\Selectors;
use Elasticsearch\Connections\ConnectionInterface;
use Elasticsearch\ConnectionPool\Selectors\SelectorInterface
class FirstSelector implements SelectorInterface
{
/**
* Selects the first connection
*
* @param array $connections Array of Connection objects
*
* @return ConnectionInterface
*/
public function select($connections)
{
return $connections[0];
}
}
And now we can specify that when creating the client:
$params['selectorClass'] = '\MyProject\Selectors\FirstSelector'; $client = new Elasticsearch\Client($params);