io.appulse.utils.threads

Class FutureUtils

java.lang.Object

io.appulse.utils.threads.FutureUtils

public final class FutureUtils
extends Object

Different future helpers.

Since:

1.11.0

Author:

Artem Labazin

Method Summary

Modifier and Type	Method and Description
static <T> CompletableFuture<T>	completedExceptionally(Throwable throwable) Creates CompletableFuture instance and completes it with specified exception.
static <T> CompletableFuture<T>	firstCompletedWithoutException(CompletionStage<? extends T>... futures) Returns first completed future, which didn't throw an exception.
static <T> CompletableFuture<T>	firstCompletedWithoutException(@NonNull List<? extends CompletionStage<? extends T>> futures) Returns first completed future, which didn't throw an exception.
static <T> CompletableFuture<T>	toCompletableFuture(@NonNull Future<T> future) Transforms standard stdlib's Future instance into CompletableFuture.

Methods inherited from class java.lang.Object

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

Method Detail

completedExceptionally

public static <T> CompletableFuture<T> completedExceptionally(Throwable throwable)

Creates CompletableFuture instance and completes it with specified exception.

Type Parameters:

T - the future's generic type.

Parameters:

throwable - the exception

Returns:

completed exceptionally CompletableFuture instance.

firstCompletedWithoutException

public static <T> CompletableFuture<T> firstCompletedWithoutException(@NonNull
                                                                      CompletionStage<? extends T>... futures)

Returns first completed future, which didn't throw an exception.

Type Parameters:

T - the future's generic type.

Parameters:

futures - array of futures.

Returns:

first non-exceptional completed future.

firstCompletedWithoutException

public static <T> CompletableFuture<T> firstCompletedWithoutException(@NonNull
                                                                      @NonNull List<? extends CompletionStage<? extends T>> futures)

Returns first completed future, which didn't throw an exception.

Type Parameters:

T - the future's generic type.

Parameters:

futures - list of futures.

Returns:

first non-exceptional completed future.

toCompletableFuture

public static <T> CompletableFuture<T> toCompletableFuture(@NonNull
                                                           @NonNull Future<T> future)

Transforms standard stdlib's Future instance into CompletableFuture.

Type Parameters:

T - the future's generic type.

Parameters:

future - for transform.

Returns:

CompletableFuture instance.