codelipenghui commented on code in PR #15454:
URL: https://github.com/apache/pulsar/pull/15454#discussion_r867353859
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pulsar-common/src/main/java/org/apache/pulsar/common/util/FutureUtil.java:
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@@ -55,6 +57,36 @@ public static CompletableFuture<Object>
waitForAny(Collection<? extends Completa
return CompletableFuture.anyOf(futures.toArray(new
CompletableFuture[0]));
}
+ public static CompletableFuture<Optional<Object>> waitForAny(Collection<?
extends CompletableFuture<?>> futures,
+ Predicate<Object>
tester) {
+ return waitForAny(futures).thenCompose(v -> {
+ if (tester.test(v)) {
+ return CompletableFuture.completedFuture(Optional.of(v));
+ }
+ Collection<CompletableFuture<?>> doneFutures = futures.stream()
+ .filter(f -> f.isDone())
+ .collect(Collectors.toList());
+ futures.removeAll(doneFutures);
+ Optional<?> value = doneFutures.stream()
+ .filter(f -> !f.isCompletedExceptionally())
+ .map(CompletableFuture::join)
Review Comment:
This is for `doneFutures`, all the futures are completed.
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