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

Example 11 with HystrixCollapserKey

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

the class RollingCollapserBatchSizeDistributionStreamTest method testBatches.

@Test
public void testBatches() {
    HystrixCollapserKey key = HystrixCollapserKey.Factory.asKey("Collapser-Batch-Size-B");
    stream = RollingCollapserBatchSizeDistributionStream.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("OnNext @ " + System.currentTimeMillis());
        }
    });
    Collapser.from(key, 1).observe();
    Collapser.from(key, 2).observe();
    Collapser.from(key, 3).observe();
    try {
        Thread.sleep(250);
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    Collapser.from(key, 4).observe();
    try {
        Thread.sleep(250);
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    Collapser.from(key, 5).observe();
    Collapser.from(key, 6).observe();
    Collapser.from(key, 7).observe();
    Collapser.from(key, 8).observe();
    Collapser.from(key, 9).observe();
    try {
        Thread.sleep(250);
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    Collapser.from(key, 10).observe();
    Collapser.from(key, 11).observe();
    Collapser.from(key, 12).observe();
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    //should have 4 batches: 3, 1, 5, 3
    assertEquals(4, stream.getLatest().getTotalCount());
    assertEquals(3, stream.getLatestMean());
    assertEquals(1, stream.getLatestPercentile(0));
    assertEquals(5, stream.getLatestPercentile(100));
}

Example 12 with HystrixCollapserKey

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

the class CumulativeCollapserEventCounterStreamTest method testCollapsedAndResponseFromCacheAgeOutOfCumulativeWindow.

//by doing a take(30), we expect all values to stay in the stream, as cumulative counters never age out of window
@Test
public void testCollapsedAndResponseFromCacheAgeOutOfCumulativeWindow() {
    HystrixCollapserKey key = HystrixCollapserKey.Factory.asKey("CumulativeCollapser-D");
    stream = CumulativeCollapserEventCounterStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(30).subscribe(getSubscriber(latch));
    for (int i = 0; i < 3; i++) {
        CommandStreamTest.Collapser.from(key, i).observe();
        //same arg - should get a response from cache
        CommandStreamTest.Collapser.from(key, i).observe();
        //same arg - should get a response from cache
        CommandStreamTest.Collapser.from(key, i).observe();
    }
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertEquals(HystrixEventType.Collapser.values().length, stream.getLatest().length);
    long[] expected = new long[HystrixEventType.Collapser.values().length];
    expected[HystrixEventType.Collapser.BATCH_EXECUTED.ordinal()] = 1;
    expected[HystrixEventType.Collapser.ADDED_TO_BATCH.ordinal()] = 3;
    expected[HystrixEventType.Collapser.RESPONSE_FROM_CACHE.ordinal()] = 6;
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertArrayEquals(expected, stream.getLatest());
}

Example 13 with HystrixCollapserKey

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

the class CumulativeCollapserEventCounterStreamTest method testCollapsed.

@Test
public void testCollapsed() {
    HystrixCollapserKey key = HystrixCollapserKey.Factory.asKey("CumulativeCollapser-B");
    stream = CumulativeCollapserEventCounterStream.getInstance(key, 10, 100);
    stream.startCachingStreamValuesIfUnstarted();
    final CountDownLatch latch = new CountDownLatch(1);
    stream.observe().take(10).subscribe(getSubscriber(latch));
    for (int i = 0; i < 3; i++) {
        CommandStreamTest.Collapser.from(key, i).observe();
    }
    try {
        assertTrue(latch.await(10000, TimeUnit.MILLISECONDS));
    } catch (InterruptedException ex) {
        fail("Interrupted ex");
    }
    assertEquals(HystrixEventType.Collapser.values().length, stream.getLatest().length);
    long[] expected = new long[HystrixEventType.Collapser.values().length];
    expected[HystrixEventType.Collapser.BATCH_EXECUTED.ordinal()] = 1;
    expected[HystrixEventType.Collapser.ADDED_TO_BATCH.ordinal()] = 3;
    System.out.println("ReqLog : " + HystrixRequestLog.getCurrentRequest().getExecutedCommandsAsString());
    assertArrayEquals(expected, stream.getLatest());
}

Example 14 with HystrixCollapserKey

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

the class SerialHystrixConfiguration method serializeConfiguration.

private static void serializeConfiguration(HystrixConfiguration config, JsonGenerator json) {
    try {
        json.writeStartObject();
        json.writeStringField("type", "HystrixConfig");
        json.writeObjectFieldStart("commands");
        for (Map.Entry<HystrixCommandKey, HystrixCommandConfiguration> entry : config.getCommandConfig().entrySet()) {
            final HystrixCommandKey key = entry.getKey();
            final HystrixCommandConfiguration commandConfig = entry.getValue();
            writeCommandConfigJson(json, key, commandConfig);
        }
        json.writeEndObject();
        json.writeObjectFieldStart("threadpools");
        for (Map.Entry<HystrixThreadPoolKey, HystrixThreadPoolConfiguration> entry : config.getThreadPoolConfig().entrySet()) {
            final HystrixThreadPoolKey threadPoolKey = entry.getKey();
            final HystrixThreadPoolConfiguration threadPoolConfig = entry.getValue();
            writeThreadPoolConfigJson(json, threadPoolKey, threadPoolConfig);
        }
        json.writeEndObject();
        json.writeObjectFieldStart("collapsers");
        for (Map.Entry<HystrixCollapserKey, HystrixCollapserConfiguration> entry : config.getCollapserConfig().entrySet()) {
            final HystrixCollapserKey collapserKey = entry.getKey();
            final HystrixCollapserConfiguration collapserConfig = entry.getValue();
            writeCollapserConfigJson(json, collapserKey, collapserConfig);
        }
        json.writeEndObject();
        json.writeEndObject();
        json.close();
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

Example 15 with HystrixCollapserKey

use of com.netflix.hystrix.HystrixCollapserKey in project ratpack by ratpack.

the class HystrixCollapserMetricsJsonMapper method apply.

@Override
public String apply(HystrixCollapserMetrics collapserMetrics) throws Exception {
    HystrixCollapserKey key = collapserMetrics.getCollapserKey();
    StringWriter jsonString = new StringWriter();
    JsonGenerator json = jsonFactory.createGenerator(jsonString);
    json.writeStartObject();
    json.writeStringField("type", "HystrixCollapser");
    json.writeStringField("name", key.name());
    json.writeNumberField("currentTime", System.currentTimeMillis());
    json.writeNumberField("rollingCountRequestsBatched", collapserMetrics.getRollingCount(HystrixRollingNumberEvent.COLLAPSER_REQUEST_BATCHED));
    json.writeNumberField("rollingCountBatches", collapserMetrics.getRollingCount(HystrixRollingNumberEvent.COLLAPSER_BATCH));
    json.writeNumberField("rollingCountResponsesFromCache", collapserMetrics.getRollingCount(HystrixRollingNumberEvent.RESPONSE_FROM_CACHE));
    // batch size percentiles
    json.writeNumberField("batchSize_mean", collapserMetrics.getBatchSizeMean());
    json.writeObjectFieldStart("batchSize");
    json.writeNumberField("25", collapserMetrics.getBatchSizePercentile(25));
    json.writeNumberField("50", collapserMetrics.getBatchSizePercentile(50));
    json.writeNumberField("75", collapserMetrics.getBatchSizePercentile(75));
    json.writeNumberField("90", collapserMetrics.getBatchSizePercentile(90));
    json.writeNumberField("95", collapserMetrics.getBatchSizePercentile(95));
    json.writeNumberField("99", collapserMetrics.getBatchSizePercentile(99));
    json.writeNumberField("99.5", collapserMetrics.getBatchSizePercentile(99.5));
    json.writeNumberField("100", collapserMetrics.getBatchSizePercentile(100));
    json.writeEndObject();
    // shard size percentiles (commented-out for now)
    //json.writeNumberField("shardSize_mean", collapserMetrics.getShardSizeMean());
    //json.writeObjectFieldStart("shardSize");
    //json.writeNumberField("25", collapserMetrics.getShardSizePercentile(25));
    //json.writeNumberField("50", collapserMetrics.getShardSizePercentile(50));
    //json.writeNumberField("75", collapserMetrics.getShardSizePercentile(75));
    //json.writeNumberField("90", collapserMetrics.getShardSizePercentile(90));
    //json.writeNumberField("95", collapserMetrics.getShardSizePercentile(95));
    //json.writeNumberField("99", collapserMetrics.getShardSizePercentile(99));
    //json.writeNumberField("99.5", collapserMetrics.getShardSizePercentile(99.5));
    //json.writeNumberField("100", collapserMetrics.getShardSizePercentile(100));
    //json.writeEndObject();
    //json.writeNumberField("propertyValue_metricsRollingStatisticalWindowInMilliseconds", collapserMetrics.getProperties().metricsRollingStatisticalWindowInMilliseconds().get());
    json.writeBooleanField("propertyValue_requestCacheEnabled", collapserMetrics.getProperties().requestCacheEnabled().get());
    json.writeNumberField("propertyValue_maxRequestsInBatch", collapserMetrics.getProperties().maxRequestsInBatch().get());
    json.writeNumberField("propertyValue_timerDelayInMilliseconds", collapserMetrics.getProperties().timerDelayInMilliseconds().get());
    // this will get summed across all instances in a cluster
    json.writeNumberField("reportingHosts", 1);
    json.writeEndObject();
    json.close();
    return jsonString.getBuffer().toString();
}