Package io.hekate.util.async

Class AsyncUtils

java.lang.Object

io.hekate.util.async.AsyncUtils

public final class AsyncUtils
extends Object

Set of utility methods for asynchronous tasks processing.

Method Summary

Modifier and Type	Method	Description
static CompletableFuture<Void>	allOf(Collection<CompletableFuture<?>> all)	Version of CompletableFuture.allOf(CompletableFuture[]) that works with a collection instead of an array.
static Future<?>	cancelledFuture()	Returns a cancelled Future.
static Executor	fallbackExecutor()	Fallback executor.
static <T> T	getUninterruptedly(Future<T> future)	Uninterruptedly waits for the specified Future to complete, and then returns its result.
static Waiting	shutdown(ExecutorService executor)	Shuts down the specified executor service and returns a Waiting that will await for termination.

Methods inherited from class java.lang.Object

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

Method Detail

fallbackExecutor

public static Executor fallbackExecutor()

Fallback executor.

Returns a single-threaded executor instance that can be used run tasks that couldn't be executed on their own executors for some reasons. This executor should not be used for execution of a regular flow tasks.

Returns:

Fallback executor.

shutdown

public static Waiting shutdown(ExecutorService executor)

Shuts down the specified executor service and returns a Waiting that will await for termination.

Parameters:

executor - Executor service to shut down.

Returns:

Waiting for termination.

getUninterruptedly

public static <T> T getUninterruptedly(Future<T> future)
                                throws ExecutionException

Uninterruptedly waits for the specified Future to complete, and then returns its result.

Type Parameters:

T - Result type.

Parameters:

future - Future.

Returns:

Result of the Future.get() method.

Throws:

ExecutionException - If thrown by the Future.get() method.

allOf

public static CompletableFuture<Void> allOf(Collection<CompletableFuture<?>> all)

Version of CompletableFuture.allOf(CompletableFuture[]) that works with a collection instead of an array.

Parameters:

all - Collection of future objects.

Returns:

Future that is completed when all of the given CompletableFutures complete.

See Also:

CompletableFuture.allOf(CompletableFuture[])

cancelledFuture

public static Future<?> cancelledFuture()

Returns a cancelled Future.

Returns:

Future.