Examples with SendPort co.paralleluniverse.strands.channels.SendPort used on opensource projects

Example 1 with SendPort

use of co.paralleluniverse.strands.channels.SendPort in project quasar by puniverse.

the class TwoSidedTest method twoSidedTestWithProcessor.

@Test
public void twoSidedTestWithProcessor() throws Exception {
    // Publisher
    final Channel<Integer> publisherChannel = Channels.newChannel(random() ? 0 : 5, OverflowPolicy.BLOCK);
    final Strand publisherStrand = new Fiber<Void>(new SuspendableRunnable() {

        @Override
        public void run() throws SuspendExecution, InterruptedException {
            for (long i = 0; i < ELEMENTS; i++) publisherChannel.send((int) (i % 1000));
            publisherChannel.close();
        }
    }).start();
    final Publisher<Integer> publisher = ReactiveStreams.toPublisher(publisherChannel);
    // Processor
    final Processor<Integer, Integer> processor = ReactiveStreams.toProcessor(5, OverflowPolicy.BLOCK, new SuspendableAction2<ReceivePort<Integer>, SendPort<Integer>>() {

        @Override
        public void call(ReceivePort<Integer> in, SendPort<Integer> out) throws SuspendExecution, InterruptedException {
            long count = 0;
            for (Integer element; ((element = in.receive()) != null); count++) {
                out.send(element * 10);
                out.send(element * 100);
                // Fiber.sleep(1); // just for fun
                assertTrue(count < ELEMENTS);
            }
            assertEquals(ELEMENTS, count);
            out.close();
        }
    });
    publisher.subscribe(processor);
    // Subscriber
    final ReceivePort<Integer> subscriberChannel = ReactiveStreams.subscribe(buffer, overflowPolicy, processor);
    final Strand subscriberStrand = new Fiber<Void>(new SuspendableRunnable() {

        @Override
        public void run() throws SuspendExecution, InterruptedException {
            long count = 0;
            for (; ; ) {
                Integer x = subscriberChannel.receive();
                if (x == null)
                    break;
                assertTrue(x % 10 == 0);
                if (count % 2 != 0)
                    assertTrue(x % 100 == 0);
                count++;
            }
            subscriberChannel.close();
            assertEquals(ELEMENTS * 2, count);
        }
    }).start();
    subscriberStrand.join(5, TimeUnit.SECONDS);
    publisherStrand.join(5, TimeUnit.SECONDS);
}