Java Code Examples for io.netty.util.HashedWheelTimer#newTimeout()

public static <T> CompletableFuture<T> enforceTimeout(
  CompletionStage<T> underlyingFuture,
  HashedWheelTimer timer,
  long timeout,
  TimeUnit timeUnit,
  Supplier<Exception> exceptionSupplier
) {
  // We don't want to muck with the underlying future passed in, so
  // chaining a .thenApply(x -> x) forces a new future to be created with its own
  // completion tracking. In this way, the original future is left alone and can
  // time out on its own schedule.
  CompletableFuture<T> future = underlyingFuture
    .thenApply(x -> x)
    .toCompletableFuture();
  Timeout hwtTimeout = timer.newTimeout(
    ignored -> future.completeExceptionally(exceptionSupplier.get()),
    timeout,
    timeUnit
  );
  future.whenComplete((result, throwable) -> hwtTimeout.cancel());
  return future;
}
 

public static void main(String[] args) throws InterruptedException {
	HashedWheelTimer hashedWheelTimer = new HashedWheelTimer(1000, TimeUnit.MILLISECONDS, 16);
	hashedWheelTimer.newTimeout(new TimerTask() {

		@Override
		public void run(Timeout timeout) throws Exception {
			System.out.println(System.currentTimeMillis() + "  === executed");
		}
	}, 1, TimeUnit.SECONDS);
}
 

/**
 * Return a future that completes with a timeout after a delay.
 */
public static CompletableFuture<Timeout> timeoutFuture(
  HashedWheelTimer hwt,
  long delay,
  TimeUnit timeUnit
) {
  try {
    CompletableFuture<Timeout> future = new CompletableFuture<>();
    hwt.newTimeout(future::complete, delay, timeUnit);
    return future;
  } catch (Throwable t) {
    return exceptionalFuture(t);
  }
}
 

public void registerTimeout(HashedWheelTimer timeoutChecker, long timeout) {
    if (timeout > 0) {
        timeoutHandle = timeoutChecker.newTimeout(this::checkTimeout, timeout, TimeUnit.MILLISECONDS);
    }
}
 

public void registerTimeout(HashedWheelTimer timeoutChecker, long timeout) {
    if (timeout > 0) {
        timeoutHandle = timeoutChecker.newTimeout(this::checkTimeout, timeout, TimeUnit.MILLISECONDS);
    }
}