LeaderGatewayRetriever (Flink : Runtime 2.0.0 API)

java.lang.Object
- org.apache.flink.runtime.webmonitor.retriever.LeaderRetriever
- - org.apache.flink.runtime.webmonitor.retriever.LeaderGatewayRetriever<T>

Type Parameters:

T - type of the gateway to retrieve

All Implemented Interfaces:

LeaderRetrievalListener, GatewayRetriever<T>

Direct Known Subclasses:

RpcGatewayRetriever
```
public abstract class LeaderGatewayRetriever<T extends org.apache.flink.runtime.rpc.RpcGateway>
extends LeaderRetriever
implements GatewayRetriever<T>
```
Retrieves and stores the leading RpcGateway.

Field Summary
- Fields inherited from class org.apache.flink.runtime.webmonitor.retriever.LeaderRetriever
  log

Constructor Summary

Constructors
Constructor Description

LeaderGatewayRetriever()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`protected abstract CompletableFuture<T>`	`createGateway(CompletableFuture<org.apache.flink.api.java.tuple.Tuple2<String,UUID>> leaderFuture)`
`CompletableFuture<T>`	`getFuture()`	Get future of object to retrieve.
`void`	`notifyNewLeaderAddress(CompletableFuture<org.apache.flink.api.java.tuple.Tuple2<String,UUID>> newLeaderAddressFuture)`

Methods inherited from class org.apache.flink.runtime.webmonitor.retriever.LeaderRetriever
getLeaderFuture, getLeaderNow, handleError, notifyLeaderAddress

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.flink.runtime.webmonitor.retriever.GatewayRetriever
getNow

- Constructor Detail
  - LeaderGatewayRetriever
```
public LeaderGatewayRetriever()
```
- Method Detail
  - getFuture
```
public CompletableFuture<T> getFuture()
```
    Description copied from interface: GatewayRetriever
    
    Get future of object to retrieve.
    
    Specified by:
    
    getFuture in interface GatewayRetriever<T extends org.apache.flink.runtime.rpc.RpcGateway>
    
    Returns:
    
    Future object to retrieve
  - notifyNewLeaderAddress
```
public void notifyNewLeaderAddress(CompletableFuture<org.apache.flink.api.java.tuple.Tuple2<String,UUID>> newLeaderAddressFuture)
```
    Overrides:
    
    notifyNewLeaderAddress in class LeaderRetriever
  - createGateway
```
protected abstract CompletableFuture<T> createGateway(CompletableFuture<org.apache.flink.api.java.tuple.Tuple2<String,UUID>> leaderFuture)
```