Module lettuce.core

Package io.lettuce.core.cluster

Class MultiNodeExecution

java.lang.Object

io.lettuce.core.cluster.MultiNodeExecution

public class MultiNodeExecution
extends Object

Utility to perform and synchronize command executions on multiple cluster nodes.

Author:

Mark Paluch

Constructor Summary

Constructors

Constructor	Description
MultiNodeExecution()

Method Summary

Modifier and Type	Method	Description
static RedisFuture<Long>	aggregateAsync(Map<?,? extends CompletionStage<Long>> executions)	Aggregate (sum) results of the RedisFutures.
static RedisFuture<String>	alwaysOkOfAsync(Map<?,? extends CompletionStage<String>> executions)	Returns always OK and guarantee that all futures are finished.
static <T> T	execute(Callable<T> function)
static <T> RedisFuture<T>	firstOfAsync(Map<?,? extends CompletionStage<T>> executions)	Returns the result of the first RedisFuture and guarantee that all futures are finished.
static <T> RedisFuture<T>	lastOfAsync(Map<?,? extends CompletionStage<T>> executions)	Returns the result of the last RedisFuture and guarantee that all futures are finished.

Methods inherited from class java.lang.Object

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

Constructor Details

MultiNodeExecution

public MultiNodeExecution()

Method Details

execute

public static <T> T execute(Callable<T> function)

aggregateAsync

public static RedisFuture<Long> aggregateAsync(Map<?,? extends CompletionStage<Long>> executions)

Aggregate (sum) results of the RedisFutures.

Parameters:

executions - mapping of a key to the future

Returns:

future producing an aggregation result

firstOfAsync

public static <T> RedisFuture<T> firstOfAsync(Map<?,? extends CompletionStage<T>> executions)

Returns the result of the first RedisFuture and guarantee that all futures are finished.

Type Parameters:

T - result type

Parameters:

executions - mapping of a key to the future

Returns:

future returning the first result.

lastOfAsync

public static <T> RedisFuture<T> lastOfAsync(Map<?,? extends CompletionStage<T>> executions)

Returns the result of the last RedisFuture and guarantee that all futures are finished.

Type Parameters:

T - result type

Parameters:

executions - mapping of a key to the future

Returns:

future returning the first result.

alwaysOkOfAsync

public static RedisFuture<String> alwaysOkOfAsync(Map<?,? extends CompletionStage<String>> executions)

Returns always OK and guarantee that all futures are finished.

Parameters:

executions - mapping of a key to the future

Returns:

future returning the first result.