Examples with Action0 rx.functions.Action0 used on opensource projects

Example 96 with Action0

use of rx.functions.Action0 in project Hystrix by Netflix.

the class HystrixCommandTest method testRequestThenCacheHitAndOriginalUnsubscribed.

@Test
public void testRequestThenCacheHitAndOriginalUnsubscribed() {
    AsyncCacheableCommand original = new AsyncCacheableCommand("foo");
    AsyncCacheableCommand fromCache = new AsyncCacheableCommand("foo");
    final AtomicReference<Boolean> originalValue = new AtomicReference<Boolean>(null);
    final AtomicReference<Boolean> fromCacheValue = new AtomicReference<Boolean>(null);
    final CountDownLatch originalLatch = new CountDownLatch(1);
    final CountDownLatch fromCacheLatch = new CountDownLatch(1);
    Observable<Boolean> originalObservable = original.toObservable();
    Observable<Boolean> fromCacheObservable = fromCache.toObservable();
    Subscription originalSubscription = originalObservable.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.Original Unsubscribe");
            originalLatch.countDown();
        }
    }).subscribe(new Subscriber<Boolean>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.Original OnCompleted");
            originalLatch.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.Original OnError : " + e);
            originalLatch.countDown();
        }

        @Override
        public void onNext(Boolean b) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.Original OnNext : " + b);
            originalValue.set(b);
        }
    });
    Subscription fromCacheSubscription = fromCacheObservable.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.FromCache Unsubscribe");
            fromCacheLatch.countDown();
        }
    }).subscribe(new Subscriber<Boolean>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.FromCache OnCompleted");
            fromCacheLatch.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.FromCache OnError : " + e);
            fromCacheLatch.countDown();
        }

        @Override
        public void onNext(Boolean b) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Test.FromCache OnNext : " + b);
            fromCacheValue.set(b);
        }
    });
    try {
        Thread.sleep(10);
        originalSubscription.unsubscribe();
        assertTrue(originalLatch.await(600, TimeUnit.MILLISECONDS));
        assertTrue(fromCacheLatch.await(600, TimeUnit.MILLISECONDS));
        assertEquals("Number of execution semaphores in use (original)", 0, original.getExecutionSemaphore().getNumberOfPermitsUsed());
        assertEquals("Number of fallback semaphores in use (original)", 0, original.getFallbackSemaphore().getNumberOfPermitsUsed());
        assertFalse(original.isExecutionComplete());
        assertTrue(original.isExecutedInThread());
        assertEquals(null, original.getFailedExecutionException());
        assertNull(original.getExecutionException());
        assertTrue(original.getExecutionTimeInMilliseconds() > -1);
        assertFalse(original.isSuccessfulExecution());
        assertCommandExecutionEvents(original, HystrixEventType.CANCELLED);
        assertNull(originalValue.get());
        assertEquals(0, original.metrics.getCurrentConcurrentExecutionCount());
        assertEquals("Number of execution semaphores in use (fromCache)", 0, fromCache.getExecutionSemaphore().getNumberOfPermitsUsed());
        assertEquals("Number of fallback semaphores in use (fromCache)", 0, fromCache.getFallbackSemaphore().getNumberOfPermitsUsed());
        assertTrue(fromCache.isExecutionComplete());
        assertFalse(fromCache.isExecutedInThread());
        assertEquals(null, fromCache.getFailedExecutionException());
        assertNull(fromCache.getExecutionException());
        assertCommandExecutionEvents(fromCache, HystrixEventType.SUCCESS, HystrixEventType.RESPONSE_FROM_CACHE);
        assertTrue(fromCache.getExecutionTimeInMilliseconds() == -1);
        assertTrue(fromCache.isSuccessfulExecution());
        assertEquals(0, fromCache.metrics.getCurrentConcurrentExecutionCount());
        // underlying work
        assertFalse(original.isCancelled());
        System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
        assertSaneHystrixRequestLog(2);
    } catch (InterruptedException ex) {
        ex.printStackTrace();
    }
}

Example 97 with Action0

use of rx.functions.Action0 in project Hystrix by Netflix.

the class HystrixObservableCollapserTest method testEarlyUnsubscribeExecutedViaObserve.

@Test
public void testEarlyUnsubscribeExecutedViaObserve() throws Exception {
    TestCollapserTimer timer = new TestCollapserTimer();
    HystrixObservableCollapser<String, String, String, String> collapser1 = new TestRequestCollapser(timer, 1);
    Observable<String> response1 = collapser1.observe();
    HystrixObservableCollapser<String, String, String, String> collapser2 = new TestRequestCollapser(timer, 2);
    Observable<String> response2 = collapser2.observe();
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    final AtomicReference<String> value1 = new AtomicReference<String>(null);
    final AtomicReference<String> value2 = new AtomicReference<String>(null);
    Subscription s1 = response1.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s1 Unsubscribed!");
            latch1.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s1 OnCompleted");
            latch1.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s1 OnError : " + e);
            latch1.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s1 OnNext : " + s);
            value1.set(s);
        }
    });
    Subscription s2 = response2.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s2 Unsubscribed!");
            latch2.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s2 OnCompleted");
            latch2.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s2 OnError : " + e);
            latch2.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s2 OnNext : " + s);
            value2.set(s);
        }
    });
    s1.unsubscribe();
    // let time pass that equals the default delay/period
    timer.incrementTime(10);
    assertTrue(latch1.await(1000, TimeUnit.MILLISECONDS));
    assertTrue(latch2.await(1000, TimeUnit.MILLISECONDS));
    assertNull(value1.get());
    assertEquals("2", value2.get());
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(1, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
    HystrixCollapserMetrics metrics = collapser1.getMetrics();
    assertSame(metrics, collapser2.getMetrics());
    HystrixInvokableInfo<?> command = HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().iterator().next();
    // 1 should have been removed from batch
    assertEquals(1, command.getNumberCollapsed());
}

Example 98 with Action0

use of rx.functions.Action0 in project Hystrix by Netflix.

the class HystrixObservableCollapser method observe.

/**
 * Used for asynchronous execution with a callback by subscribing to the {@link Observable}.
 * <p>
 * This eagerly starts execution the same as {@link HystrixCollapser#queue()} and {@link HystrixCollapser#execute()}.
 * A lazy {@link Observable} can be obtained from {@link #toObservable()}.
 * <p>
 * <b>Callback Scheduling</b>
 * <p>
 * <ul>
 * <li>When using {@link ExecutionIsolationStrategy#THREAD} this defaults to using {@link Schedulers#computation()} for callbacks.</li>
 * <li>When using {@link ExecutionIsolationStrategy#SEMAPHORE} this defaults to using {@link Schedulers#immediate()} for callbacks.</li>
 * </ul>
 * Use {@link #toObservable(rx.Scheduler)} to schedule the callback differently.
 * <p>
 * See https://github.com/Netflix/RxJava/wiki for more information.
 *
 * @return {@code Observable<R>} that executes and calls back with the result of of {@link HystrixCommand}{@code <BatchReturnType>} execution after mapping
 *         the {@code <BatchReturnType>} into {@code <ResponseType>}
 */
public Observable<ResponseType> observe() {
    // use a ReplaySubject to buffer the eagerly subscribed-to Observable
    ReplaySubject<ResponseType> subject = ReplaySubject.create();
    // eagerly kick off subscription
    final Subscription underlyingSubscription = toObservable().subscribe(subject);
    // return the subject that can be subscribed to later while the execution has already started
    return subject.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            underlyingSubscription.unsubscribe();
        }
    });
}

Example 99 with Action0

use of rx.functions.Action0 in project Hystrix by Netflix.

the class HystrixCollapserTest method testRequestThenCacheHitAndOriginalUnsubscribed.

@Test
public void testRequestThenCacheHitAndOriginalUnsubscribed() throws Exception {
    TestCollapserTimer timer = new TestCollapserTimer();
    HystrixCollapser<List<String>, String, String> collapser1 = new SuccessfulCacheableCollapsedCommand(timer, "foo", true);
    Observable<String> response1 = collapser1.observe();
    HystrixCollapser<List<String>, String, String> collapser2 = new SuccessfulCacheableCollapsedCommand(timer, "foo", true);
    Observable<String> response2 = collapser2.observe();
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    final AtomicReference<String> value1 = new AtomicReference<String>(null);
    final AtomicReference<String> value2 = new AtomicReference<String>(null);
    Subscription s1 = response1.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s1 Unsubscribed!");
            latch1.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s1 OnCompleted");
            latch1.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s1 OnError : " + e);
            latch1.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s1 OnNext : " + s);
            value1.set(s);
        }
    });
    Subscription s2 = response2.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s2 Unsubscribed!");
            latch2.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s2 OnCompleted");
            latch2.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s2 OnError : " + e);
            latch2.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s2 OnNext : " + s);
            value2.set(s);
        }
    });
    s1.unsubscribe();
    // let time pass that equals the default delay/period
    timer.incrementTime(10);
    assertTrue(latch1.await(1000, TimeUnit.MILLISECONDS));
    assertTrue(latch2.await(1000, TimeUnit.MILLISECONDS));
    assertNull(value1.get());
    assertEquals("foo", value2.get());
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(1, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
    HystrixInvokableInfo<?> command = HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().iterator().next();
    assertCommandExecutionEvents(command, HystrixEventType.SUCCESS, HystrixEventType.COLLAPSED);
    // should only be 1 collapsed - other came from cache, then was cancelled
    assertEquals(1, command.getNumberCollapsed());
}

Example 100 with Action0

use of rx.functions.Action0 in project Hystrix by Netflix.

the class HystrixCollapserTest method testEarlyUnsubscribeFromAllCancelsBatch.

@Test
public void testEarlyUnsubscribeFromAllCancelsBatch() throws Exception {
    TestCollapserTimer timer = new TestCollapserTimer();
    HystrixCollapser<List<String>, String, String> collapser1 = new TestRequestCollapser(timer, 1);
    Observable<String> response1 = collapser1.observe();
    HystrixCollapser<List<String>, String, String> collapser2 = new TestRequestCollapser(timer, 2);
    Observable<String> response2 = collapser2.observe();
    final CountDownLatch latch1 = new CountDownLatch(1);
    final CountDownLatch latch2 = new CountDownLatch(1);
    final AtomicReference<String> value1 = new AtomicReference<String>(null);
    final AtomicReference<String> value2 = new AtomicReference<String>(null);
    Subscription s1 = response1.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s1 Unsubscribed!");
            latch1.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s1 OnCompleted");
            latch1.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s1 OnError : " + e);
            latch1.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s1 OnNext : " + s);
            value1.set(s);
        }
    });
    Subscription s2 = response2.doOnUnsubscribe(new Action0() {

        @Override
        public void call() {
            System.out.println(System.currentTimeMillis() + " : s2 Unsubscribed!");
            latch2.countDown();
        }
    }).subscribe(new Subscriber<String>() {

        @Override
        public void onCompleted() {
            System.out.println(System.currentTimeMillis() + " : s2 OnCompleted");
            latch2.countDown();
        }

        @Override
        public void onError(Throwable e) {
            System.out.println(System.currentTimeMillis() + " : s2 OnError : " + e);
            latch2.countDown();
        }

        @Override
        public void onNext(String s) {
            System.out.println(System.currentTimeMillis() + " : s2 OnNext : " + s);
            value2.set(s);
        }
    });
    s1.unsubscribe();
    s2.unsubscribe();
    // let time pass that equals the default delay/period
    timer.incrementTime(10);
    assertTrue(latch1.await(1000, TimeUnit.MILLISECONDS));
    assertTrue(latch2.await(1000, TimeUnit.MILLISECONDS));
    assertNull(value1.get());
    assertNull(value2.get());
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(0, HystrixRequestLog.getCurrentRequest().getAllExecutedCommands().size());
}