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

Example 16 with HystrixCommandKey

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

the class RollingCommandLatencyDistributionStreamTest method testResponseFromCacheDoesNotGetLatencyTracked.

@Test
public void testResponseFromCacheDoesNotGetLatencyTracked() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Latency-G");
    stream = RollingCommandLatencyDistributionStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    //should get 1 SUCCESS and 1 RESPONSE_FROM_CACHE
    List<Command> commands = Command.getCommandsWithResponseFromCache(groupKey, key);
    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());
            assertTrue(distribution.getTotalCount() <= 1);
        }
    });
    for (Command cmd : commands) {
        cmd.observe();
    }
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertEquals(1, stream.getLatest().getTotalCount());
    assertBetween(0, 30, stream.getLatestMean());
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
}

Example 17 with HystrixCommandKey

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

the class RollingCommandLatencyDistributionStreamTest method testSemaphoreRejectedCommandDoesNotGetLatencyTracked.

@Test
public void testSemaphoreRejectedCommandDoesNotGetLatencyTracked() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Latency-F");
    stream = RollingCommandLatencyDistributionStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    //10 commands with latency should occupy all semaphores.  execute those, then wait for bucket to roll
    //next command should be a semaphore rejection
    List<Command> commands = new ArrayList<Command>();
    for (int i = 0; i < 10; i++) {
        commands.add(Command.from(groupKey, key, HystrixEventType.SUCCESS, 200, HystrixCommandProperties.ExecutionIsolationStrategy.SEMAPHORE));
    }
    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() > 0) {
                assertBetween(200, 250, (int) distribution.getMean());
            }
        }
    });
    for (final Command cmd : commands) {
        //since these are blocking calls on the caller thread, we need a new caller thread for each command to actually get the desired concurrency
        new Thread(new HystrixContextRunnable(new Runnable() {

            @Override
            public void run() {
                cmd.observe();
            }
        })).start();
    }
    Command semaphoreRejected = Command.from(groupKey, key, HystrixEventType.SUCCESS);
    try {
        Thread.sleep(40);
        semaphoreRejected.observe();
    } catch (InterruptedException ie) {
        fail(ie.getMessage());
    }
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertEquals(10, stream.getLatest().getTotalCount());
    assertBetween(200, 250, stream.getLatestMean());
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertTrue(semaphoreRejected.isResponseSemaphoreRejected());
}

Example 18 with HystrixCommandKey

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

the class RollingCommandLatencyDistributionStreamTest method testMultipleBucketsBothGetStored.

@Test
public void testMultipleBucketsBothGetStored() {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Latency-H");
    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() == 2) {
                assertBetween(55, 90, (int) distribution.getMean());
            }
            if (distribution.getTotalCount() == 5) {
                assertEquals(60, 90, (long) distribution.getMean());
            }
        }
    });
    Command cmd1 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 10);
    Command cmd2 = Command.from(groupKey, key, HystrixEventType.FAILURE, 100);
    cmd1.observe();
    cmd2.observe();
    try {
        Thread.sleep(500);
    } catch (InterruptedException ie) {
        fail("Interrupted ex");
    }
    Command cmd3 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 60);
    Command cmd4 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 60);
    Command cmd5 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 70);
    cmd3.observe();
    cmd4.observe();
    cmd5.observe();
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertBetween(55, 90, stream.getLatestMean());
    assertBetween(10, 50, stream.getLatestPercentile(0.0));
    assertBetween(100, 150, stream.getLatestPercentile(100.0));
}

Example 19 with HystrixCommandKey

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

the class RollingCommandMaxConcurrencyStreamTest method testMultipleCommandsCarryOverMultipleBucketsAndThenAgeOut.

/**
     * BUCKETS
     *     A    |    B    |    C    |    D    |    E    |
     * 1:  [-------------------------------]
     * 2:          [-------------------------------]
     * 3:                      [--]
     * 4:                              [--]
     *
     * Max concurrency should be 3, but by waiting for 30 bucket rolls, final max concurrency should be 0
     */
@Test
public void testMultipleCommandsCarryOverMultipleBucketsAndThenAgeOut() throws InterruptedException {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Concurrency-E");
    stream = RollingCommandMaxConcurrencyStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(30).subscribe(getSubscriber(latch));
    Command cmd1 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 300);
    Command cmd2 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 300);
    Command cmd3 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 10);
    Command cmd4 = Command.from(groupKey, key, HystrixEventType.SUCCESS, 10);
    cmd1.observe();
    //bucket roll
    Thread.sleep(100);
    cmd2.observe();
    Thread.sleep(100);
    cmd3.observe();
    Thread.sleep(100);
    cmd4.observe();
    assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    assertEquals(0, stream.getLatestRollingMax());
}

Example 20 with HystrixCommandKey

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

the class RollingCommandMaxConcurrencyStreamTest method testConcurrencyStreamProperlyFiltersOutShortCircuits.

@Test
public void testConcurrencyStreamProperlyFiltersOutShortCircuits() throws InterruptedException {
    HystrixCommandKey key = HystrixCommandKey.Factory.asKey("CMD-Concurrency-G");
    stream = RollingCommandMaxConcurrencyStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(getSubscriber(latch));
    //after 3 failures, next command should short-circuit.
    //to prove short-circuited commands don't contribute to concurrency, execute 3 FAILURES in the first bucket sequentially
    //then when circuit is open, execute 20 concurrent commands.  they should all get short-circuited, and max concurrency should be 1
    Command failure1 = Command.from(groupKey, key, HystrixEventType.FAILURE);
    Command failure2 = Command.from(groupKey, key, HystrixEventType.FAILURE);
    Command failure3 = Command.from(groupKey, key, HystrixEventType.FAILURE);
    List<Command> shortCircuited = new ArrayList<Command>();
    for (int i = 0; i < 20; i++) {
        shortCircuited.add(Command.from(groupKey, key, HystrixEventType.SUCCESS, 100));
    }
    failure1.execute();
    failure2.execute();
    failure3.execute();
    Thread.sleep(150);
    for (Command cmd : shortCircuited) {
        cmd.observe();
    }
    assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertEquals(1, stream.getLatestRollingMax());
}