Examples with OnSubscribe rx.Observable.OnSubscribe used on opensource projects

Example 1 with OnSubscribe

use of rx.Observable.OnSubscribe in project Hystrix by Netflix.

the class HystrixObservableCommandTest method testRequestContextOnRejectionWithFallback.

private RequestContextTestResults testRequestContextOnRejectionWithFallback(ExecutionIsolationStrategy isolation, final Scheduler userScheduler) {
    final RequestContextTestResults results = new RequestContextTestResults();
    TestHystrixObservableCommand<Boolean> command = new TestHystrixObservableCommand<Boolean>(TestHystrixObservableCommand.testPropsBuilder(new TestCircuitBreaker()).setCommandPropertiesDefaults(HystrixCommandPropertiesTest.getUnitTestPropertiesSetter().withExecutionIsolationStrategy(isolation).withExecutionIsolationSemaphoreMaxConcurrentRequests(0)).setThreadPool(new HystrixThreadPool() {

        @Override
        public ThreadPoolExecutor getExecutor() {
            return null;
        }

        @Override
        public void markThreadExecution() {
        }

        @Override
        public void markThreadCompletion() {
        }

        @Override
        public void markThreadRejection() {
        }

        @Override
        public boolean isQueueSpaceAvailable() {
            // always return false so we reject everything
            return false;
        }

        @Override
        public Scheduler getScheduler() {
            return new HystrixContextScheduler(HystrixPlugins.getInstance().getConcurrencyStrategy(), this);
        }

        @Override
        public Scheduler getScheduler(Func0<Boolean> shouldInterruptThread) {
            return new HystrixContextScheduler(HystrixPlugins.getInstance().getConcurrencyStrategy(), this, shouldInterruptThread);
        }
    })) {

        @Override
        protected Observable<Boolean> construct() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    s.onError(new RuntimeException("onError"));
                }
            }).subscribeOn(userScheduler);
        }

        @Override
        protected Observable<Boolean> resumeWithFallback() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    results.isContextInitialized.set(HystrixRequestContext.isCurrentThreadInitialized());
                    results.originThread.set(Thread.currentThread());
                    s.onNext(false);
                    s.onCompleted();
                }
            }).subscribeOn(userScheduler);
        }
    };
    results.command = command;
    command.toObservable().doOnEach(new Action1<Notification<? super Boolean>>() {

        @Override
        public void call(Notification<? super Boolean> n) {
            results.isContextInitializedObserveOn.set(HystrixRequestContext.isCurrentThreadInitialized());
            results.observeOnThread.set(Thread.currentThread());
        }
    }).subscribe(results.ts);
    results.ts.awaitTerminalEvent();
    System.out.println("Run => Initialized: " + results.isContextInitialized.get() + "  Thread: " + results.originThread.get());
    System.out.println("Observed => Initialized: " + results.isContextInitializedObserveOn.get() + "  Thread: " + results.observeOnThread.get());
    assertEquals(0, results.ts.getOnErrorEvents().size());
    assertEquals(1, results.ts.getOnNextEvents().size());
    assertEquals(false, results.ts.getOnNextEvents().get(0));
    assertFalse(command.isSuccessfulExecution());
    assertTrue(command.isResponseRejected());
    if (isolation == ExecutionIsolationStrategy.SEMAPHORE) {
        assertCommandExecutionEvents(command, HystrixEventType.SEMAPHORE_REJECTED, HystrixEventType.FALLBACK_EMIT, HystrixEventType.FALLBACK_SUCCESS);
    } else {
        assertCommandExecutionEvents(command, HystrixEventType.THREAD_POOL_REJECTED, HystrixEventType.FALLBACK_EMIT, HystrixEventType.FALLBACK_SUCCESS);
    }
    assertEquals(0, command.metrics.getCurrentConcurrentExecutionCount());
    assertSaneHystrixRequestLog(1);
    return results;
}

Example 2 with OnSubscribe

use of rx.Observable.OnSubscribe in project Hystrix by Netflix.

the class HystrixObservableCommandTest method testRequestContextOnShortCircuitedWithFallback.

private RequestContextTestResults testRequestContextOnShortCircuitedWithFallback(ExecutionIsolationStrategy isolation, final Scheduler userScheduler) {
    final RequestContextTestResults results = new RequestContextTestResults();
    TestHystrixObservableCommand<Boolean> command = new TestHystrixObservableCommand<Boolean>(TestHystrixObservableCommand.testPropsBuilder(new TestCircuitBreaker()).setCommandPropertiesDefaults(HystrixCommandPropertiesTest.getUnitTestPropertiesSetter().withExecutionIsolationStrategy(isolation)).setCircuitBreaker(new TestCircuitBreaker().setForceShortCircuit(true))) {

        @Override
        protected Observable<Boolean> construct() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    s.onError(new RuntimeException("onError"));
                }
            }).subscribeOn(userScheduler);
        }

        @Override
        protected Observable<Boolean> resumeWithFallback() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    results.isContextInitialized.set(HystrixRequestContext.isCurrentThreadInitialized());
                    results.originThread.set(Thread.currentThread());
                    s.onNext(false);
                    s.onCompleted();
                }
            }).subscribeOn(userScheduler);
        }
    };
    results.command = command;
    command.toObservable().doOnEach(new Action1<Notification<? super Boolean>>() {

        @Override
        public void call(Notification<? super Boolean> n) {
            results.isContextInitializedObserveOn.set(HystrixRequestContext.isCurrentThreadInitialized());
            results.observeOnThread.set(Thread.currentThread());
        }
    }).subscribe(results.ts);
    results.ts.awaitTerminalEvent();
    System.out.println("Run => Initialized: " + results.isContextInitialized.get() + "  Thread: " + results.originThread.get());
    System.out.println("Observed => Initialized: " + results.isContextInitializedObserveOn.get() + "  Thread: " + results.observeOnThread.get());
    assertEquals(0, results.ts.getOnErrorEvents().size());
    assertEquals(1, results.ts.getOnNextEvents().size());
    assertEquals(false, results.ts.getOnNextEvents().get(0));
    assertTrue(command.getExecutionTimeInMilliseconds() == -1);
    assertFalse(command.isSuccessfulExecution());
    assertTrue(command.isResponseShortCircuited());
    assertCommandExecutionEvents(command, HystrixEventType.SHORT_CIRCUITED, HystrixEventType.FALLBACK_EMIT, HystrixEventType.FALLBACK_SUCCESS);
    assertEquals(0, command.metrics.getCurrentConcurrentExecutionCount());
    assertSaneHystrixRequestLog(1);
    return results;
}

Example 3 with OnSubscribe

use of rx.Observable.OnSubscribe in project Hystrix by Netflix.

the class HystrixObservableCommandTest method testRequestContextOnGracefulFailure.

private RequestContextTestResults testRequestContextOnGracefulFailure(ExecutionIsolationStrategy isolation, final Scheduler userScheduler) {
    final RequestContextTestResults results = new RequestContextTestResults();
    final TestCircuitBreaker circuitBreaker = new TestCircuitBreaker();
    TestHystrixObservableCommand<Boolean> command = new TestHystrixObservableCommand<Boolean>(TestHystrixObservableCommand.testPropsBuilder(circuitBreaker).setCommandPropertiesDefaults(HystrixCommandPropertiesTest.getUnitTestPropertiesSetter().withExecutionIsolationStrategy(isolation))) {

        @Override
        protected Observable<Boolean> construct() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    results.isContextInitialized.set(HystrixRequestContext.isCurrentThreadInitialized());
                    results.originThread.set(Thread.currentThread());
                    s.onError(new RuntimeException("graceful onError"));
                }
            }).subscribeOn(userScheduler);
        }
    };
    results.command = command;
    command.toObservable().doOnEach(new Action1<Notification<? super Boolean>>() {

        @Override
        public void call(Notification<? super Boolean> n) {
            results.isContextInitializedObserveOn.set(HystrixRequestContext.isCurrentThreadInitialized());
            results.observeOnThread.set(Thread.currentThread());
        }
    }).subscribe(results.ts);
    results.ts.awaitTerminalEvent();
    System.out.println("Run => Initialized: " + results.isContextInitialized.get() + "  Thread: " + results.originThread.get());
    System.out.println("Observed => Initialized: " + results.isContextInitializedObserveOn.get() + "  Thread: " + results.observeOnThread.get());
    assertEquals(1, results.ts.getOnErrorEvents().size());
    assertTrue(command.getExecutionTimeInMilliseconds() > -1);
    assertFalse(command.isSuccessfulExecution());
    assertTrue(command.isFailedExecution());
    assertCommandExecutionEvents(command, HystrixEventType.FAILURE, HystrixEventType.FALLBACK_MISSING);
    assertEquals(0, command.metrics.getCurrentConcurrentExecutionCount());
    assertSaneHystrixRequestLog(1);
    return results;
}

Example 4 with OnSubscribe

use of rx.Observable.OnSubscribe in project Hystrix by Netflix.

the class HystrixObservableCommandTest method testRequestContextOnTimeoutWithFallback.

private RequestContextTestResults testRequestContextOnTimeoutWithFallback(ExecutionIsolationStrategy isolation, final Scheduler userScheduler) {
    final RequestContextTestResults results = new RequestContextTestResults();
    TestHystrixObservableCommand<Boolean> command = new TestHystrixObservableCommand<Boolean>(TestHystrixObservableCommand.testPropsBuilder(new TestCircuitBreaker()).setCommandPropertiesDefaults(HystrixCommandPropertiesTest.getUnitTestPropertiesSetter().withExecutionIsolationStrategy(isolation).withExecutionTimeoutInMilliseconds(50))) {

        @Override
        protected Observable<Boolean> construct() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                    // ignore the interrupted exception
                    }
                }
            }).subscribeOn(userScheduler);
        }

        @Override
        protected Observable<Boolean> resumeWithFallback() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    results.isContextInitialized.set(HystrixRequestContext.isCurrentThreadInitialized());
                    results.originThread.set(Thread.currentThread());
                    s.onNext(false);
                    s.onCompleted();
                }
            }).subscribeOn(userScheduler);
        }
    };
    results.command = command;
    command.toObservable().doOnEach(new Action1<Notification<? super Boolean>>() {

        @Override
        public void call(Notification<? super Boolean> n) {
            System.out.println("timeoutWithFallback notification: " + n + "   " + Thread.currentThread());
            results.isContextInitializedObserveOn.set(HystrixRequestContext.isCurrentThreadInitialized());
            results.observeOnThread.set(Thread.currentThread());
        }
    }).subscribe(results.ts);
    results.ts.awaitTerminalEvent();
    System.out.println("Fallback => Initialized: " + results.isContextInitialized.get() + "  Thread: " + results.originThread.get());
    System.out.println("Observed => Initialized: " + results.isContextInitializedObserveOn.get() + "  Thread: " + results.observeOnThread.get());
    assertEquals(1, results.ts.getOnNextEvents().size());
    assertEquals(false, results.ts.getOnNextEvents().get(0));
    assertTrue(command.getExecutionTimeInMilliseconds() > -1);
    assertFalse(command.isSuccessfulExecution());
    assertTrue(command.isResponseTimedOut());
    assertCommandExecutionEvents(command, HystrixEventType.TIMEOUT, HystrixEventType.FALLBACK_EMIT, HystrixEventType.FALLBACK_SUCCESS);
    assertEquals(0, command.metrics.getCurrentConcurrentExecutionCount());
    assertSaneHystrixRequestLog(1);
    return results;
}

Example 5 with OnSubscribe

use of rx.Observable.OnSubscribe in project Hystrix by Netflix.

the class HystrixObservableCommandTest method testRequestContextOnFailureWithFallback.

private RequestContextTestResults testRequestContextOnFailureWithFallback(ExecutionIsolationStrategy isolation, final Scheduler userScheduler) {
    final RequestContextTestResults results = new RequestContextTestResults();
    TestHystrixObservableCommand<Boolean> command = new TestHystrixObservableCommand<Boolean>(TestHystrixObservableCommand.testPropsBuilder(new TestCircuitBreaker()).setCommandPropertiesDefaults(HystrixCommandPropertiesTest.getUnitTestPropertiesSetter().withExecutionIsolationStrategy(isolation))) {

        @Override
        protected Observable<Boolean> construct() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    s.onError(new RuntimeException("onError"));
                }
            }).subscribeOn(userScheduler);
        }

        @Override
        protected Observable<Boolean> resumeWithFallback() {
            return Observable.create(new OnSubscribe<Boolean>() {

                @Override
                public void call(Subscriber<? super Boolean> s) {
                    results.isContextInitialized.set(HystrixRequestContext.isCurrentThreadInitialized());
                    results.originThread.set(Thread.currentThread());
                    s.onNext(false);
                    s.onCompleted();
                }
            }).subscribeOn(userScheduler);
        }
    };
    results.command = command;
    command.toObservable().doOnEach(new Action1<Notification<? super Boolean>>() {

        @Override
        public void call(Notification<? super Boolean> n) {
            results.isContextInitializedObserveOn.set(HystrixRequestContext.isCurrentThreadInitialized());
            results.observeOnThread.set(Thread.currentThread());
        }
    }).subscribe(results.ts);
    results.ts.awaitTerminalEvent();
    System.out.println("Run => Initialized: " + results.isContextInitialized.get() + "  Thread: " + results.originThread.get());
    System.out.println("Observed => Initialized: " + results.isContextInitializedObserveOn.get() + "  Thread: " + results.observeOnThread.get());
    assertEquals(0, results.ts.getOnErrorEvents().size());
    assertEquals(1, results.ts.getOnNextEvents().size());
    assertEquals(false, results.ts.getOnNextEvents().get(0));
    assertTrue(command.getExecutionTimeInMilliseconds() > -1);
    assertFalse(command.isSuccessfulExecution());
    assertTrue(command.isFailedExecution());
    assertCommandExecutionEvents(command, HystrixEventType.FAILURE, HystrixEventType.FALLBACK_EMIT, HystrixEventType.FALLBACK_SUCCESS);
    assertEquals(0, command.metrics.getCurrentConcurrentExecutionCount());
    assertSaneHystrixRequestLog(1);
    return results;
}