ClusterEventListener (Solr 9.0.0 core API)

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

CollectionsRepairEventListener
```
public interface ClusterEventListener
extends Closeable
```
Components that want to be notified of cluster-wide events should use this.
XXX should this work only for ClusterSingleton-s? some types of events may be XXX difficult (or pointless) to propagate to every node.

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void onEvent(ClusterEvent event)
  Handle the event.
  - Methods inherited from interface java.io.Closeable
    close

- Method Detail
  - onEvent
```
void onEvent(ClusterEvent event)
```
    Handle the event. Implementations should be non-blocking - if any long processing is needed it should be performed asynchronously.
    
    Parameters:
    
    event - cluster event