org.apache.flink.runtime.io

Class AvailabilityProvider.AvailabilityHelper

java.lang.Object

org.apache.flink.runtime.io.AvailabilityProvider.AvailabilityHelper

All Implemented Interfaces:

AvailabilityProvider

Enclosing interface:

AvailabilityProvider

public static final class AvailabilityProvider.AvailabilityHelper
extends Object
implements AvailabilityProvider

A availability implementation for providing the helpful functions of resetting the available/unavailable states.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.io.AvailabilityProvider

AvailabilityProvider.AvailabilityHelper

Field Summary

Fields inherited from interface org.apache.flink.runtime.io.AvailabilityProvider

AVAILABLE

Constructor Summary

Constructors

Constructor and Description
AvailabilityHelper()

Method Summary

Modifier and Type	Method and Description
CompletableFuture<?>	getAvailableFuture()
CompletableFuture<?>	getUnavailableToResetAvailable() Returns the previously not completed future and resets the constant completed AvailabilityProvider.AVAILABLE as the current state.
CompletableFuture<?>	getUnavailableToResetUnavailable() Creates a new uncompleted future as the current state and returns the previous uncompleted one.
void	resetAvailable() Resets the constant completed AvailabilityProvider.AVAILABLE as the current state.
void	resetUnavailable() Judges to reset the current available state as unavailable.

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.io.AvailabilityProvider

isApproximatelyAvailable, isAvailable

Constructor Detail

AvailabilityHelper

public AvailabilityHelper()

Method Detail

resetUnavailable

public void resetUnavailable()

Judges to reset the current available state as unavailable.

resetAvailable

public void resetAvailable()

Resets the constant completed AvailabilityProvider.AVAILABLE as the current state.

getUnavailableToResetAvailable

public CompletableFuture<?> getUnavailableToResetAvailable()

Returns the previously not completed future and resets the constant completed AvailabilityProvider.AVAILABLE as the current state.

getUnavailableToResetUnavailable

public CompletableFuture<?> getUnavailableToResetUnavailable()

Creates a new uncompleted future as the current state and returns the previous uncompleted one.

getAvailableFuture

public CompletableFuture<?> getAvailableFuture()

Specified by:

getAvailableFuture in interface AvailabilityProvider

Returns:

a future that is completed if the respective provider is available.