@Test
public void testBackPressureWhenZippingUnevenStreams2() {
Queue fast =
LazyReact.parallelBuilder()
.withExecutor(new ForkJoinPool(2))
.reactInfinitely(() -> "100")
.peek(System.out::println)
.withQueueFactory(QueueFactories.boundedQueue(10))
.toQueue();
new Thread(
() -> {
LazyReact.parallelBuilder()
.withExecutor(new ForkJoinPool(2))
.range(0, 1000)
.peek(System.out::println)
.peek(c -> sleep(10))
.zip(fast.stream())
.forEach(it -> {});
})
.start();
;
fast.setSizeSignal(Signal.queueBackedSignal());
int max =
fast.getSizeSignal()
.getContinuous()
.stream()
.mapToInt(it -> (int) it)
.limit(50)
.max()
.getAsInt();
assertThat(max, lessThan(11));
}
@Test
public void zipFastSlow() {
Queue q = new Queue();
LazyReact.parallelBuilder()
.reactInfinitely(() -> sleep(100))
.then(it -> q.add("100"))
.runThread(new Thread());
parallel(1, 2, 3, 4, 5, 6)
.zip(q.stream())
.peek(it -> System.out.println(it))
.collect(Collectors.toList());
}
/**
* flatten nested SimpleReactStreams
*
* @param stream Stream to flatten
* @return flattened Stream
*/
static <U, R> SimpleReactStream<R> join(SimpleReactStream<SimpleReactStream<U>> stream) {
Queue queue = stream.getQueueFactory().build();
stream.then(it -> it.sync().then(queue::offer)).allOf(it -> queue.close());
return stream.fromStream(queue.stream(stream.getSubscription()));
}
