LeaderRetrievalDriverFactory (Flink : Runtime 2.1.1 API)

All Known Implementing Classes:

ZooKeeperLeaderRetrievalDriverFactory
```
public interface LeaderRetrievalDriverFactory
```
Factory for creating LeaderRetrievalDriver with different implementation.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`LeaderRetrievalDriver`	`createLeaderRetrievalDriver(LeaderRetrievalEventHandler leaderEventHandler, org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandler)`	Create a specific `LeaderRetrievalDriver` and start the necessary services.

- Method Detail
  - createLeaderRetrievalDriver
```
LeaderRetrievalDriver createLeaderRetrievalDriver(LeaderRetrievalEventHandler leaderEventHandler,
                                                  org.apache.flink.runtime.rpc.FatalErrorHandler fatalErrorHandler)
                                           throws Exception
```
    Create a specific LeaderRetrievalDriver and start the necessary services. For example, NodeCache in Zookeeper, ConfigMap watcher in Kubernetes. They could get the leader information change events and need to notify the leader listener by LeaderRetrievalEventHandler.
    
    Parameters:
    
    leaderEventHandler - handler for the leader retrieval driver to notify leader change events.
    
    fatalErrorHandler - fatal error handler
    
    Throws:
    
    Exception - when create a specific LeaderRetrievalDriver implementation and start the necessary services.