Examples with HystrixCommandKey com.netflix.hystrix.HystrixCommandKey used on opensource projects

Example 11 with HystrixCommandKey

use of com.netflix.hystrix.HystrixCommandKey in project Hystrix by Netflix.

the class HealthCountsStreamTest method testEmptyStreamProducesZeros.

@Test
public void testEmptyStreamProducesZeros() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Health-A");
    stream = HealthCountsStream.getInstance(key, 10, 100);
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(getSubscriber(latch));
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(0L, stream.getLatest().getErrorCount());
    assertEquals(0L, stream.getLatest().getTotalRequests());
}

Example 12 with HystrixCommandKey

use of com.netflix.hystrix.HystrixCommandKey in project Hystrix by Netflix.

the class HealthCountsStreamTest method testSharedSourceStream.

@Test
public void testSharedSourceStream() throws InterruptedException {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Health-N");
    stream = HealthCountsStream.getInstance(key, 10, 100);
    final CountDownLatch latch = new CountDownLatch(1);
    final AtomicBoolean allEqual = new AtomicBoolean(false);
    Observable<HystrixCommandMetrics.HealthCounts> o1 = stream.observe().take(10).observeOn(Schedulers.computation());
    Observable<HystrixCommandMetrics.HealthCounts> o2 = stream.observe().take(10).observeOn(Schedulers.computation());
    Observable<Boolean> zipped = Observable.zip(o1, o2, new Func2<HystrixCommandMetrics.HealthCounts, HystrixCommandMetrics.HealthCounts, Boolean>() {

        @Override
        public Boolean call(HystrixCommandMetrics.HealthCounts healthCounts, HystrixCommandMetrics.HealthCounts healthCounts2) {
            //we want object equality
            return healthCounts == healthCounts2;
        }
    });
    Observable<Boolean> reduced = zipped.reduce(true, new Func2<Boolean, Boolean, Boolean>() {

        @Override
        public Boolean call(Boolean a, Boolean b) {
            return a && b;
        }
    });
    reduced.subscribe(new Subscriber<Boolean>() {

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

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

        @Override
        public void onNext(Boolean b) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Reduced OnNext : " + b);
            allEqual.set(b);
        }
    });
    for (int i = 0; i < 10; i++) {
        HystrixCommand<Integer> cmd = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.SUCCESS, 20);
        cmd.execute();
    }
    assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    assertTrue(allEqual.get());
//we should be getting the same object from both streams.  this ensures that multiple subscribers don't induce extra work
}

Example 13 with HystrixCommandKey

use of com.netflix.hystrix.HystrixCommandKey in project Hystrix by Netflix.

the class HealthCountsStreamTest method testRequestFromCache.

@Test
public void testRequestFromCache() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Health-F");
    stream = HealthCountsStream.getInstance(key, 10, 100);
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(getSubscriber(latch));
    CommandStreamTest.Command cmd1 = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.SUCCESS, 20);
    CommandStreamTest.Command cmd2 = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.RESPONSE_FROM_CACHE);
    CommandStreamTest.Command cmd3 = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.RESPONSE_FROM_CACHE);
    cmd1.observe();
    cmd2.observe();
    cmd3.observe();
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(0L, stream.getLatest().getErrorCount());
    //responses from cache should not show up here
    assertEquals(1L, stream.getLatest().getTotalRequests());
}

Example 14 with HystrixCommandKey

use of com.netflix.hystrix.HystrixCommandKey in project Hystrix by Netflix.

the class HealthCountsStreamTest method testThreadPoolRejected.

@Test
public void testThreadPoolRejected() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Health-I");
    stream = HealthCountsStream.getInstance(key, 10, 100);
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(getSubscriber(latch));
    //10 commands will saturate threadpools when called concurrently.
    //submit 2 more requests and they should be THREADPOOL_REJECTED
    //should see 10 SUCCESSes, 2 THREADPOOL_REJECTED and 2 FALLBACK_SUCCESSes
    List<CommandStreamTest.Command> saturators = new ArrayList<CommandStreamTest.Command>();
    for (int i = 0; i < 10; i++) {
        saturators.add(CommandStreamTest.Command.from(groupKey, key, HystrixEventType.SUCCESS, 400));
    }
    CommandStreamTest.Command rejected1 = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.SUCCESS, 0);
    CommandStreamTest.Command rejected2 = CommandStreamTest.Command.from(groupKey, key, HystrixEventType.SUCCESS, 0);
    for (final CommandStreamTest.Command saturator : saturators) {
        saturator.observe();
    }
    try {
        Thread.sleep(100);
    } catch (InterruptedException ie) {
        fail(ie.getMessage());
    }
    rejected1.observe();
    rejected2.observe();
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertTrue(rejected1.isResponseThreadPoolRejected());
    assertTrue(rejected2.isResponseThreadPoolRejected());
    assertEquals(2L, stream.getLatest().getErrorCount());
    assertEquals(12L, stream.getLatest().getTotalRequests());
}

Example 15 with HystrixCommandKey

use of com.netflix.hystrix.HystrixCommandKey in project Hystrix by Netflix.

the class RollingCommandLatencyDistributionStreamTest method testSingleBucketGetsStored.

@Test
public void testSingleBucketGetsStored() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Latency-B");
    stream = RollingCommandLatencyDistributionStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(new Subscriber<CachedValuesHistogram>() {

        @Override
        public void onCompleted() {
            latch.countDown();
        }

        @Override
        public void onError(Throwable e) {
            fail(e.getMessage());
        }

        @Override
        public void onNext(CachedValuesHistogram distribution) {
            System.out.println(System.currentTimeMillis() + " : " + Thread.currentThread().getName() + " Received distribution with count : " + distribution.getTotalCount() + " and mean : " + distribution.getMean());
            if (distribution.getTotalCount() == 1) {
                assertBetween(10, 50, (int) distribution.getMean());
            } else if (distribution.getTotalCount() == 2) {
                assertBetween(300, 400, (int) distribution.getMean());
            }
        }
    });
    Command cmd1 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 10);
    //latency = 600
    Command cmd2 = Command.from(groupKey, key, HystrixEventType.TIMEOUT);
    cmd1.observe();
    cmd2.observe();
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertBetween(150, 400, stream.getLatestMean());
    assertBetween(10, 50, stream.getLatestPercentile(0.0));
    assertBetween(300, 800, stream.getLatestPercentile(100.0));
}