org.apache.flink.runtime.util

Class LeaderRetrievalUtils

java.lang.Object

org.apache.flink.runtime.util.LeaderRetrievalUtils

public class LeaderRetrievalUtils
extends Object

Utility class to work with LeaderRetrievalService class.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LeaderRetrievalUtils.LeaderInformationListener Helper class which is used by the retrieveLeaderInformation method to retrieve the leader's rpc URL and the current leader session ID.

Method Summary

Modifier and Type	Method and Description
static InetAddress	findConnectingAddress(LeaderRetrievalService leaderRetrievalService, Duration timeout, org.apache.flink.runtime.rpc.RpcSystemUtils rpcSystemUtils)
static LeaderInformation	retrieveLeaderInformation(LeaderRetrievalService leaderRetrievalService, Duration timeout) Retrieves the leader pekko url and the current leader session ID.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

retrieveLeaderInformation

public static LeaderInformation retrieveLeaderInformation(LeaderRetrievalService leaderRetrievalService,
                                                          Duration timeout)
                                                   throws LeaderRetrievalException

Retrieves the leader pekko url and the current leader session ID. The values are stored in a LeaderInformation instance.

Parameters:

leaderRetrievalService - Leader retrieval service to retrieve the leader connection information

timeout - Timeout when to give up looking for the leader

Returns:

LeaderInformation containing the leader's rpc URL and the current leader session ID

Throws:

LeaderRetrievalException

findConnectingAddress

public static InetAddress findConnectingAddress(LeaderRetrievalService leaderRetrievalService,
                                                Duration timeout,
                                                org.apache.flink.runtime.rpc.RpcSystemUtils rpcSystemUtils)
                                         throws LeaderRetrievalException

Throws:

LeaderRetrievalException