Package org.apache.flink.runtime.security.token

Class DefaultDelegationTokenManager

java.lang.Object

org.apache.flink.runtime.security.token.DefaultDelegationTokenManager

All Implemented Interfaces:

DelegationTokenManager

@Internal
public class DefaultDelegationTokenManager
extends Object
implements DelegationTokenManager

Manager for delegation tokens in a Flink cluster.

When delegation token renewal is enabled, this manager will make sure long-running apps can run without interruption while accessing secured services. It periodically contacts all the configured secure services to obtain delegation tokens to be distributed to the rest of the application.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.security.token.DelegationTokenManager

DelegationTokenManager.Listener

Constructor Summary

Constructors

Constructor	Description
DefaultDelegationTokenManager(org.apache.flink.configuration.Configuration configuration, org.apache.flink.core.plugin.PluginManager pluginManager, org.apache.flink.util.concurrent.ScheduledExecutor scheduledExecutor, ExecutorService ioExecutor)

Method Summary

Modifier and Type	Method	Description
void	obtainDelegationTokens()	Obtains new tokens in a one-time fashion and automatically distributes them to all local JVM receivers.
void	obtainDelegationTokens(DelegationTokenContainer container)	Obtains new tokens in a one-time fashion and leaves it up to the caller to distribute them.
protected Optional<Long>	obtainDelegationTokensAndGetNextRenewal(DelegationTokenContainer container)
void	start(DelegationTokenManager.Listener listener)	Creates a re-occurring task which obtains new tokens and automatically distributes them to task managers.
void	stop()	Stops re-occurring token obtain task.

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultDelegationTokenManager

public DefaultDelegationTokenManager(org.apache.flink.configuration.Configuration configuration,
 @Nullable
 org.apache.flink.core.plugin.PluginManager pluginManager,
 @Nullable
 org.apache.flink.util.concurrent.ScheduledExecutor scheduledExecutor,
 @Nullable
 ExecutorService ioExecutor)

Method Details

obtainDelegationTokens

public void obtainDelegationTokens(DelegationTokenContainer container)
                            throws Exception

Obtains new tokens in a one-time fashion and leaves it up to the caller to distribute them.

Specified by:

obtainDelegationTokens in interface DelegationTokenManager

Throws:

Exception

obtainDelegationTokens

public void obtainDelegationTokens()
                            throws Exception

Description copied from interface: DelegationTokenManager

Obtains new tokens in a one-time fashion and automatically distributes them to all local JVM receivers.

Specified by:

obtainDelegationTokens in interface DelegationTokenManager

Throws:

Exception

obtainDelegationTokensAndGetNextRenewal

protected Optional<Long> obtainDelegationTokensAndGetNextRenewal(DelegationTokenContainer container)

start

public void start(DelegationTokenManager.Listener listener)
           throws Exception

Creates a re-occurring task which obtains new tokens and automatically distributes them to task managers.

Specified by:

start in interface DelegationTokenManager

Throws:

Exception

stop

public void stop()

Stops re-occurring token obtain task.

Specified by:

stop in interface DelegationTokenManager