Class CompletableFutureUtils

java.lang.Object

dev.langchain4j.internal.CompletableFutureUtils

public class CompletableFutureUtils
extends Object

Utility methods for working with CompletableFuture.

Method Summary

Modifier and Type	Method	Description
static void	propagateCancellation(CompletableFuture<?> from, CompletableFuture<?> to)	Forwards cancellation from one future to another.

Methods inherited from class Object

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

Method Details

propagateCancellation

public static void propagateCancellation(CompletableFuture<?> from,
 CompletableFuture<?> to)

Forwards cancellation from one future to another.

CompletableFuture.cancel(boolean) does not propagate to the stages a future was derived from, so when from represents the future handed to a caller and to represents the underlying work (e.g. an in-flight HTTP request), cancelling from would otherwise leave to running. This method bridges that gap: once from completes, if it was cancelled, to is cancelled too.

Parameters:

from - the future whose cancellation should be propagated; ignored if null.

to - the future to cancel when from is cancelled.