java.util.concurrent.SubmissionPublisher Java Examples

The following examples show how to use java.util.concurrent.SubmissionPublisher. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source Project: Java-Concurrency-Multithreading-in-Practice   Author: PacktPublishing   File: Lesson4.java    License: MIT License 7 votes vote down vote up
public static void main(String[] args) {
	SubmissionPublisher<WeatherForecast> weatherForecastPublisher = new WeatherForecastPublisher();

	weatherForecastPublisher.subscribe(new DatabaseSubscriber());
	weatherForecastPublisher.subscribe(new TwitterSubscriber<WeatherForecast>());

	Flow.Processor<WeatherForecast, MetricWeatherForecast> metricConverter = new UsToMetricProcessor();
	weatherForecastPublisher.subscribe(metricConverter);
	metricConverter.subscribe(new TwitterSubscriber<MetricWeatherForecast>());

	// close the publisher and associated resources after 10 seconds
	try {
		TimeUnit.SECONDS.sleep(10);
	} catch (InterruptedException e) {
		e.printStackTrace();
	}
	weatherForecastPublisher.close();
}
 
Example #2
Source Project: Java-programming-methodology-Rxjava-articles   Author: muyinchen   File: TestStockMaintain.java    License: Apache License 2.0 6 votes vote down vote up
@Test
public void teststockRemoval() throws InterruptedException {
    Stock stock = new Stock();
    SubmissionPublisher<Order> p = new SubmissionPublisher<>();
    p.subscribe(new StockMaintain(stock));
    Product product = new Product();
    stock.store(product, 40);
    OrderItem item = new OrderItem();
    item.setProduct(product);
    item.setAmount(10);
    Order order = new Order();
    List<OrderItem> items = new LinkedList<>();
    items.add(item);
    order.setItems(items);
    for (int i = 0; i < 10; i++)
        p.submit(order);
    log.info("所有订单已经提交完毕");
    for (int j = 0; j < 10; j++) {
        log.info("Sleeping a bit...");
        Thread.sleep(50);
    }
    p.close();
    log.info("Publisher已关闭");
}
 
Example #3
Source Project: Java-11-Cookbook-Second-Edition   Author: PacktPublishing   File: Dispatcher.java    License: MIT License 6 votes vote down vote up
public static void dispatch(int trafficUnitsNumber, double timeSec, DateLocation dateLocation, double[] speedLimitByLane) {

        ExecutorService execService =  ForkJoinPool.commonPool();
        try (SubmissionPublisher<Integer> publisher = new SubmissionPublisher<>()){
            subscribe(publisher, execService, Process.AVERAGE_SPEED, timeSec, dateLocation, speedLimitByLane);
            subscribe(publisher, execService, Process.TRAFFIC_DENSITY, timeSec, dateLocation, speedLimitByLane);
            publisher.submit(trafficUnitsNumber);
        } finally {
            try {
                execService.shutdown();
                execService.awaitTermination(1, TimeUnit.SECONDS);
            } catch (Exception ex) {
                System.out.println("Caught around execService.awaitTermination(): " + ex.getClass().getName());
            } finally {
                execService.shutdownNow();
            }
        }
    }
 
Example #4
Source Project: Java-11-Cookbook-Second-Edition   Author: PacktPublishing   File: Chapter07Concurrency04.java    License: MIT License 6 votes vote down vote up
private static void demo4_Flow_submissionPublisher() {
    System.out.println();

    ExecutorService execService =  ForkJoinPool.commonPool();//Executors.newFixedThreadPool(3);
    try (SubmissionPublisher<Integer> publisher = new SubmissionPublisher<>()){//execService, 1)){
        demoSubscribe(publisher, execService, "One");
        demoSubscribe(publisher, execService, "Two");
        demoSubscribe(publisher, execService, "Three");
        IntStream.range(1, 5).forEach(publisher::submit);
    } finally {
        try {
            execService.shutdown();
            int shutdownDelaySec = 1;
            System.out.println("Waiting for " + shutdownDelaySec + " sec before shutting down service...");
            execService.awaitTermination(shutdownDelaySec, TimeUnit.SECONDS);
        } catch (Exception ex) {
            System.out.println("Caught around execService.awaitTermination(): " + ex.getClass().getName());
        } finally {
            System.out.println("Calling execService.shutdownNow()...");
            List<Runnable> l = execService.shutdownNow();
            System.out.println(l.size() + " tasks were waiting to be executed. Service stopped.");
        }

    }

}
 
Example #5
Source Project: Java-9-Cookbook   Author: PacktPublishing   File: Dispatcher.java    License: MIT License 6 votes vote down vote up
public static void dispatch(int trafficUnitsNumber, double timeSec, DateLocation dateLocation, double[] speedLimitByLane) {

        ExecutorService execService =  ForkJoinPool.commonPool();
        try (SubmissionPublisher<Integer> publisher = new SubmissionPublisher<>()){
            subscribe(publisher, execService, Process.AVERAGE_SPEED, timeSec, dateLocation, speedLimitByLane);
            subscribe(publisher, execService, Process.TRAFFIC_DENSITY, timeSec, dateLocation, speedLimitByLane);
            publisher.submit(trafficUnitsNumber);
        } finally {
            try {
                execService.shutdown();
                execService.awaitTermination(1, TimeUnit.SECONDS);
            } catch (Exception ex) {
                System.out.println("Caught around execService.awaitTermination(): " + ex.getClass().getName());
            } finally {
                execService.shutdownNow();
            }
        }
    }
 
Example #6
Source Project: Java-9-Cookbook   Author: PacktPublishing   File: Chapter07Concurrency04.java    License: MIT License 6 votes vote down vote up
private static void demo4_Flow_submissionPublisher() {
    System.out.println();

    ExecutorService execService =  ForkJoinPool.commonPool();//Executors.newFixedThreadPool(3);
    try (SubmissionPublisher<Integer> publisher = new SubmissionPublisher<>()){//execService, 1)){
        demoSubscribe(publisher, execService, "One");
        demoSubscribe(publisher, execService, "Two");
        demoSubscribe(publisher, execService, "Three");
        IntStream.range(1, 5).forEach(publisher::submit);
    } finally {
        try {
            execService.shutdown();
            int shutdownDelaySec = 1;
            System.out.println("Waiting for " + shutdownDelaySec + " sec before shutting down service...");
            execService.awaitTermination(shutdownDelaySec, TimeUnit.SECONDS);
        } catch (Exception ex) {
            System.out.println("Caught around execService.awaitTermination(): " + ex.getClass().getName());
        } finally {
            System.out.println("Calling execService.shutdownNow()...");
            List<Runnable> l = execService.shutdownNow();
            System.out.println(l.size() + " tasks were waiting to be executed. Service stopped.");
        }

    }

}
 
Example #7
Source Project: Java-9-Spring-Webflux   Author: kkTranslation   File: TestStockMaintain.java    License: Apache License 2.0 6 votes vote down vote up
@Test
public void teststockRemoval() throws InterruptedException {
    Stock stock = new Stock();
    SubmissionPublisher<Order> p = new SubmissionPublisher<>();
    p.subscribe(new StockMaintain(stock));
    Product product = new Product();
    stock.store(product, 40);
    OrderItem item = new OrderItem();
    item.setProduct(product);
    item.setAmount(10);
    Order order = new Order();
    List<OrderItem> items = new LinkedList<>();
    items.add(item);
    order.setItems(items);
    for (int i = 0; i < 10; i++)
        p.submit(order);
    log.info("所有订单已经提交完毕");
    for (int j = 0; j < 10; j++) {
        log.info("Sleeping a bit...");
        Thread.sleep(50);
    }
    p.close();
    log.info("Publisher已关闭");
}
 
Example #8
Source Project: javase   Author: critoma   File: RegistrationFormController.java    License: MIT License 6 votes vote down vote up
@FXML
protected void handleSubmitReactStreamsButtonAction(ActionEvent event) {
	Window owner = submitButton.getScene().getWindow();
	doValidationGUI(owner);

	objectRegisteredUsersCount++;
	
	System.out.println("\n Registered User react- " + nameField.getText() + ", " + emailField.getText() + ", " + passwordField.getText());
	
	try (SubmissionPublisher<User> usersPublisher = new SubmissionPublisher<User>()) {
		User u = new User(objectRegisteredUsersCount, nameField.getText(), emailField.getText(), passwordField.getText());
		UsersSubscriberReactStream usersSubscriber = new UsersSubscriberReactStream();
		usersPublisher.subscribe(usersSubscriber);
		usersPublisher.submit(u);
		usersSubscriber.cancelSubscription();
	} catch(Exception reacte) {
		reacte.printStackTrace();
	}
	
    AlertHelper.showAlert(Alert.AlertType.CONFIRMATION, owner, "Registration Successful react!", 
            "Welcome " + nameField.getText());
}
 
Example #9
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * A closed publisher reports isClosed with no closedException and
 * throws ISE upon attempted submission; a subsequent close or
 * closeExceptionally has no additional effect.
 */
public void testClose() {
    SubmissionPublisher<Integer> p = basicPublisher();
    checkInitialState(p);
    p.close();
    assertTrue(p.isClosed());
    assertNull(p.getClosedException());
    try {
        p.submit(1);
        shouldThrow();
    } catch (IllegalStateException success) {}
    Throwable ex = new SPException();
    p.closeExceptionally(ex);
    assertTrue(p.isClosed());
    assertNull(p.getClosedException());
}
 
Example #10
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * A publisher closedExceptionally reports isClosed with the
 * closedException and throws ISE upon attempted submission; a
 * subsequent close or closeExceptionally has no additional
 * effect.
 */
public void testCloseExceptionally() {
    SubmissionPublisher<Integer> p = basicPublisher();
    checkInitialState(p);
    Throwable ex = new SPException();
    p.closeExceptionally(ex);
    assertTrue(p.isClosed());
    assertSame(p.getClosedException(), ex);
    try {
        p.submit(1);
        shouldThrow();
    } catch (IllegalStateException success) {}
    p.close();
    assertTrue(p.isClosed());
    assertSame(p.getClosedException(), ex);
}
 
Example #11
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Upon attempted resubscription, the subscriber's onError is
 * called and the subscription is cancelled.
 */
public void testSubscribe4() {
    TestSubscriber s = new TestSubscriber();
    SubmissionPublisher<Integer> p = basicPublisher();
    p.subscribe(s);
    assertTrue(p.hasSubscribers());
    assertEquals(1, p.getNumberOfSubscribers());
    assertTrue(p.getSubscribers().contains(s));
    assertTrue(p.isSubscribed(s));
    s.awaitSubscribe();
    assertNotNull(s.sn);
    assertEquals(0, s.nexts);
    assertEquals(0, s.errors);
    assertEquals(0, s.completes);
    p.subscribe(s);
    s.awaitError();
    assertEquals(0, s.nexts);
    assertEquals(1, s.errors);
    assertFalse(p.isSubscribed(s));
}
 
Example #12
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Closing a publisher causes onComplete to subscribers
 */
public void testCloseCompletes() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    p.submit(1);
    p.close();
    assertTrue(p.isClosed());
    assertNull(p.getClosedException());
    s1.awaitComplete();
    assertEquals(1, s1.nexts);
    assertEquals(1, s1.completes);
    s2.awaitComplete();
    assertEquals(1, s2.nexts);
    assertEquals(1, s2.completes);
}
 
Example #13
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Closing a publisher exceptionally causes onError to subscribers
 * after they are subscribed
 */
public void testCloseExceptionallyError() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    p.submit(1);
    p.closeExceptionally(new SPException());
    assertTrue(p.isClosed());
    s1.awaitSubscribe();
    s1.awaitError();
    assertTrue(s1.nexts <= 1);
    assertEquals(1, s1.errors);
    s2.awaitSubscribe();
    s2.awaitError();
    assertTrue(s2.nexts <= 1);
    assertEquals(1, s2.errors);
}
 
Example #14
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Cancelling a subscription eventually causes no more onNexts to be issued
 */
public void testCancel() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    s1.awaitSubscribe();
    p.submit(1);
    s1.sn.cancel();
    for (int i = 2; i <= 20; ++i)
        p.submit(i);
    p.close();
    s2.awaitComplete();
    assertEquals(20, s2.nexts);
    assertEquals(1, s2.completes);
    assertTrue(s1.nexts < 20);
    assertFalse(p.isSubscribed(s1));
}
 
Example #15
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Throwing an exception in onNext causes onError
 */
public void testThrowOnNext() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    s1.awaitSubscribe();
    p.submit(1);
    s1.throwOnCall = true;
    p.submit(2);
    p.close();
    s2.awaitComplete();
    assertEquals(2, s2.nexts);
    s1.awaitComplete();
    assertEquals(1, s1.errors);
}
 
Example #16
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * If a handler is supplied in constructor, it is invoked when
 * subscriber throws an exception in onNext
 */
public void testThrowOnNextHandler() {
    AtomicInteger calls = new AtomicInteger();
    SubmissionPublisher<Integer> p = new SubmissionPublisher<>(
        basicExecutor, 8, (s, e) -> calls.getAndIncrement());
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    s1.awaitSubscribe();
    p.submit(1);
    s1.throwOnCall = true;
    p.submit(2);
    p.close();
    s2.awaitComplete();
    assertEquals(2, s2.nexts);
    assertEquals(1, s2.completes);
    s1.awaitError();
    assertEquals(1, s1.errors);
    assertEquals(1, calls.get());
}
 
Example #17
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * onNext items are issued in the same order to each subscriber
 */
public void testOrder() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    for (int i = 1; i <= 20; ++i)
        p.submit(i);
    p.close();
    s2.awaitComplete();
    s1.awaitComplete();
    assertEquals(20, s2.nexts);
    assertEquals(1, s2.completes);
    assertEquals(20, s1.nexts);
    assertEquals(1, s1.completes);
}
 
Example #18
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * onNext is issued only if requested
 */
public void testRequest1() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    p.subscribe(s1);
    s1.awaitSubscribe();
    assertTrue(p.estimateMinimumDemand() == 0);
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s2);
    p.submit(1);
    p.submit(2);
    s2.awaitNext(1);
    assertEquals(0, s1.nexts);
    s1.sn.request(3);
    p.submit(3);
    p.close();
    s2.awaitComplete();
    assertEquals(3, s2.nexts);
    assertEquals(1, s2.completes);
    s1.awaitComplete();
    assertTrue(s1.nexts > 0);
    assertEquals(1, s1.completes);
}
 
Example #19
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * onNext is not issued when requests become zero
 */
public void testRequest2() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    s1.request = false;
    p.submit(1);
    p.submit(2);
    p.close();
    s2.awaitComplete();
    assertEquals(2, s2.nexts);
    assertEquals(1, s2.completes);
    s1.awaitNext(1);
    assertEquals(1, s1.nexts);
}
 
Example #20
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * submit returns number of lagged items, compatible with result
 * of estimateMaximumLag.
 */
public void testLaggedSubmit() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    assertEquals(1, p.submit(1));
    assertTrue(p.estimateMaximumLag() >= 1);
    assertTrue(p.submit(2) >= 2);
    assertTrue(p.estimateMaximumLag() >= 2);
    s1.sn.request(4);
    assertTrue(p.submit(3) >= 3);
    assertTrue(p.estimateMaximumLag() >= 3);
    s2.sn.request(4);
    p.submit(4);
    p.close();
    s2.awaitComplete();
    assertEquals(4, s2.nexts);
    s1.awaitComplete();
    assertEquals(4, s2.nexts);
}
 
Example #21
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * submit eventually issues requested items when buffer capacity is 1
 */
public void testCap1Submit() {
    SubmissionPublisher<Integer> p
        = new SubmissionPublisher<>(basicExecutor, 1);
    TestSubscriber s1 = new TestSubscriber();
    TestSubscriber s2 = new TestSubscriber();
    p.subscribe(s1);
    p.subscribe(s2);
    for (int i = 1; i <= 20; ++i) {
        assertTrue(p.estimateMinimumDemand() <= 1);
        assertTrue(p.submit(i) >= 0);
    }
    p.close();
    s2.awaitComplete();
    s1.awaitComplete();
    assertEquals(20, s2.nexts);
    assertEquals(1, s2.completes);
    assertEquals(20, s1.nexts);
    assertEquals(1, s1.completes);
}
 
Example #22
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * offer returns number of lagged items if not saturated
 */
public void testLaggedOffer() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    assertTrue(p.offer(1, null) >= 1);
    assertTrue(p.offer(2, null) >= 2);
    s1.sn.request(4);
    assertTrue(p.offer(3, null) >= 3);
    s2.sn.request(4);
    p.offer(4, null);
    p.close();
    s2.awaitComplete();
    assertEquals(4, s2.nexts);
    s1.awaitComplete();
    assertEquals(4, s2.nexts);
}
 
Example #23
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * offer reports drops if saturated
 */
public void testDroppedOffer() {
    SubmissionPublisher<Integer> p
        = new SubmissionPublisher<>(basicExecutor, 4);
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    for (int i = 1; i <= 4; ++i)
        assertTrue(p.offer(i, null) >= 0);
    p.offer(5, null);
    assertTrue(p.offer(6, null) < 0);
    s1.sn.request(64);
    assertTrue(p.offer(7, null) < 0);
    s2.sn.request(64);
    p.close();
    s2.awaitComplete();
    assertTrue(s2.nexts >= 4);
    s1.awaitComplete();
    assertTrue(s1.nexts >= 4);
}
 
Example #24
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * offer invokes drop handler if saturated
 */
public void testHandledDroppedOffer() {
    AtomicInteger calls = new AtomicInteger();
    SubmissionPublisher<Integer> p
        = new SubmissionPublisher<>(basicExecutor, 4);
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    for (int i = 1; i <= 4; ++i)
        assertTrue(p.offer(i, (s, x) -> noopHandle(calls)) >= 0);
    p.offer(4, (s, x) -> noopHandle(calls));
    assertTrue(p.offer(6, (s, x) -> noopHandle(calls)) < 0);
    s1.sn.request(64);
    assertTrue(p.offer(7, (s, x) -> noopHandle(calls)) < 0);
    s2.sn.request(64);
    p.close();
    s2.awaitComplete();
    s1.awaitComplete();
    assertTrue(calls.get() >= 4);
}
 
Example #25
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * offer succeeds if drop handler forces request
 */
public void testRecoveredHandledDroppedOffer() {
    AtomicInteger calls = new AtomicInteger();
    SubmissionPublisher<Integer> p
        = new SubmissionPublisher<>(basicExecutor, 4);
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    int n = 0;
    for (int i = 1; i <= 8; ++i) {
        int d = p.offer(i, (s, x) -> reqHandle(calls, s));
        n = n + 2 + (d < 0 ? d : 0);
    }
    p.close();
    s2.awaitComplete();
    s1.awaitComplete();
    assertEquals(n, s1.nexts + s2.nexts);
    assertTrue(calls.get() >= 2);
}
 
Example #26
Source Project: openjdk-jdk9   Author: AdoptOpenJDK   File: SubmissionPublisherTest.java    License: GNU General Public License v2.0 6 votes vote down vote up
/**
 * Timed offer returns number of lagged items if not saturated
 */
public void testLaggedTimedOffer() {
    SubmissionPublisher<Integer> p = basicPublisher();
    TestSubscriber s1 = new TestSubscriber();
    s1.request = false;
    TestSubscriber s2 = new TestSubscriber();
    s2.request = false;
    p.subscribe(s1);
    p.subscribe(s2);
    s2.awaitSubscribe();
    s1.awaitSubscribe();
    long startTime = System.nanoTime();
    assertTrue(p.offer(1, LONG_DELAY_MS, MILLISECONDS, null) >= 1);
    assertTrue(p.offer(2, LONG_DELAY_MS, MILLISECONDS, null) >= 2);
    s1.sn.request(4);
    assertTrue(p.offer(3, LONG_DELAY_MS, MILLISECONDS, null) >= 3);
    s2.sn.request(4);
    p.offer(4, LONG_DELAY_MS, MILLISECONDS, null);
    p.close();
    s2.awaitComplete();
    assertEquals(4, s2.nexts);
    s1.awaitComplete();
    assertEquals(4, s2.nexts);
    assertTrue(millisElapsedSince(startTime) < LONG_DELAY_MS / 2);
}
 
Example #27
Source Project: Java-9-Programming-By-Example   Author: PacktPublishing   File: TestInventoryKeeper.java    License: MIT License 6 votes vote down vote up
@Test
public void testInventoryRemoval() throws InterruptedException {
    Inventory inventory = new Inventory();
    SubmissionPublisher<Order> p = new SubmissionPublisher<>();//Executors.newFixedThreadPool(6), 20);
    p.subscribe(new InventoryKeeper(inventory));
    Product product = new Product();
    inventory.store(product, 20);
    OrderItem item = new OrderItem();
    item.setProduct(product);
    item.setAmount(10);
    Order order = new Order();
    List<OrderItem> items = new LinkedList<>();
    items.add(item);
    order.setItems(items);
    for (int i = 0; i < 10; i++)
        p.submit(order);
    log.info("All orders were submitted");
    for (int j = 0; j < 10; j++) {
        log.info("Sleeping a bit...");
        Thread.sleep(50);
    }
    p.close();
    log.info("Publisher was closed");
}
 
Example #28
Source Project: journaldev   Author: journaldev   File: MyReactiveApp.java    License: MIT License 6 votes vote down vote up
public static void main(String args[]) throws InterruptedException {

		// Create Publisher
		SubmissionPublisher<Employee> publisher = new SubmissionPublisher<>();

		// Register Subscriber
		MySubscriber subs = new MySubscriber();
		publisher.subscribe(subs);

		List<Employee> emps = EmpHelper.getEmps();

		// Publish items
		System.out.println("Publishing Items to Subscriber");
		emps.stream().forEach(i -> publisher.submit(i));

		// logic to wait till processing of all messages are over
		//while (emps.size() != subs.getCounter()  || !publisher.isSubscribed(subs)) {
			Thread.sleep(1000);
		//}
		// close the Publisher
		publisher.close();

		System.out.println("Exiting the app");

	}
 
Example #29
Source Project: tutorials   Author: eugenp   File: ReactiveStreamsUnitTest.java    License: MIT License 6 votes vote down vote up
@Test
public void givenPublisher_whenSubscribeToIt_thenShouldConsumeAllElements() throws InterruptedException {
    //given
    SubmissionPublisher<String> publisher = new SubmissionPublisher<>();
    EndSubscriber<String> subscriber = new EndSubscriber<>(6);
    publisher.subscribe(subscriber);
    List<String> items = List.of("1", "x", "2", "x", "3", "x");

    //when
    assertThat(publisher.getNumberOfSubscribers()).isEqualTo(1);
    items.forEach(publisher::submit);
    publisher.close();

    //then

    await().atMost(1000, TimeUnit.MILLISECONDS).untilAsserted(
            () -> assertThat(subscriber.consumedElements).containsExactlyElementsOf(items)
    );
}
 
Example #30
Source Project: tutorials   Author: eugenp   File: ReactiveStreamsUnitTest.java    License: MIT License 6 votes vote down vote up
@Test
public void givenPublisher_whenSubscribeAndTransformElements_thenShouldConsumeAllElements() throws InterruptedException {
    //given
    SubmissionPublisher<String> publisher = new SubmissionPublisher<>();
    TransformProcessor<String, Integer> transformProcessor = new TransformProcessor<>(Integer::parseInt);
    EndSubscriber<Integer> subscriber = new EndSubscriber<>(3);
    List<String> items = List.of("1", "2", "3");
    List<Integer> expectedResult = List.of(1, 2, 3);

    //when
    publisher.subscribe(transformProcessor);
    transformProcessor.subscribe(subscriber);
    items.forEach(publisher::submit);
    publisher.close();

    //then
    await().atMost(1000, TimeUnit.MILLISECONDS).untilAsserted(
            () -> assertThat(subscriber.consumedElements).containsExactlyElementsOf(expectedResult)
    );
}