```
public class BaseNodeRoleWatcher
extends Object
```
Common code used by various implementations of DruidNodeDiscovery. User code is supposed to arrange for following methods to be called, childAdded(DiscoveryDruidNode) childRemoved(DiscoveryDruidNode) cacheInitialized() resetNodes(Map) Then registerListener(DruidNodeDiscovery.Listener) and getAllNodes() can be delegated to the implementation here.

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`cacheInitialized()`
`void`	`childAdded(DiscoveryDruidNode druidNode)`
`void`	`childRemoved(DiscoveryDruidNode druidNode)`
`static BaseNodeRoleWatcher`	`create(ScheduledExecutorService listenerExecutor, NodeRole nodeRole)`
`Collection<DiscoveryDruidNode>`	`getAllNodes()`
`void`	`registerListener(DruidNodeDiscovery.Listener listener)`
`void`	`resetNodes(Map<String,DiscoveryDruidNode> fullNodes)`

public BaseNodeRoleWatcher(ScheduledExecutorService listenerExecutor,
                           NodeRole nodeRole)

public static BaseNodeRoleWatcher create(ScheduledExecutorService listenerExecutor,
                                         NodeRole nodeRole)

public Collection<DiscoveryDruidNode> getAllNodes()

public void registerListener(DruidNodeDiscovery.Listener listener)

public void childAdded(DiscoveryDruidNode druidNode)

public void childRemoved(DiscoveryDruidNode druidNode)

public void resetNodes(Map<String,DiscoveryDruidNode> fullNodes)

Class BaseNodeRoleWatcher