Examples with D2RelativeStrategyProperties com.linkedin.d2.D2RelativeStrategyProperties used on opensource projects

Example 31 with D2RelativeStrategyProperties

use of com.linkedin.d2.D2RelativeStrategyProperties in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testSlowStart.

@Test(dataProvider = "strategy", retryAnalyzer = SingleRetry.class)
public void testSlowStart(loadBalancerStrategyType type) {
    Map<String, String> degraderPropertiesWithSlowStart = new HashMap<>();
    D2RelativeStrategyProperties relativePropertiesWithSlowStart = new D2RelativeStrategyProperties();
    degraderPropertiesWithSlowStart.put(PropertyKeys.DEGRADER_SLOW_START_THRESHOLD, "0.2");
    relativePropertiesWithSlowStart.setSlowStartThreshold(0.2);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 5).setConstantRequestCount(60).setNumIntervals(50).setDegraderStrategies(new HashMap<>(), degraderPropertiesWithSlowStart).setDynamicLatency(Arrays.asList(HOST_RECOVERING_TO_HEALTHY_LATENCY, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION, HEALTHY_HOST_LATENCY_CORRELATION));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(new HashMap<>(), degraderPropertiesWithSlowStart).build() : builder.setRelativeLoadBalancerStrategies(relativePropertiesWithSlowStart).build();
    testRunner.runWait();
    List<Integer> pointHistory = testRunner.getPointHistory().get(testRunner.getUri(0));
    assertTrue(hasPointsInHistory(pointHistory, Arrays.asList(2, 4, 8, 16)), "Slow start should double the health score when it is below threshold");
}

Example 32 with D2RelativeStrategyProperties

use of com.linkedin.d2.D2RelativeStrategyProperties in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testRaceCondition.

@Test(dataProvider = "raceConditionScenario")
public void testRaceCondition(loadBalancerStrategyType type, int numTrackerClients) {
    Map<String, String> degraderProperties = new HashMap<>();
    degraderProperties.put(PropertyKeys.DEGRADER_INITIAL_DROP_RATE, "0.99");
    degraderProperties.put(PropertyKeys.DEGRADER_SLOW_START_THRESHOLD, "0.16");
    D2RelativeStrategyProperties relativeProperties = new D2RelativeStrategyProperties().setSlowStartThreshold(0.16).setInitialHealthScore(0.01);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 10).setConstantRequestCount(30).setNumIntervals(50).setConstantLatency(Arrays.asList(HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(new HashMap<>(), degraderProperties).build() : builder.setRelativeLoadBalancerStrategies(relativeProperties).build();
    testRunner.runWaitInconsistentTrackerClients(numTrackerClients);
    assertEquals(testRunner.getPoints().size(), 10);
    assertEquals(testRunner.getPoints().get(testRunner.getUri(0)).intValue(), 100);
}

Example 33 with D2RelativeStrategyProperties

use of com.linkedin.d2.D2RelativeStrategyProperties in project rest.li by linkedin.

the class TestLoadBalancerStrategy method testStayQuarantined.

@Test(dataProvider = "strategy")
public void testStayQuarantined(loadBalancerStrategyType type) {
    Map<String, Object> strategyPropertiesWithQuarantineEnabled = new HashMap<>();
    D2RelativeStrategyProperties relativePropertiesWithQuarantineEnabled = new D2RelativeStrategyProperties();
    D2QuarantineProperties quarantineProperties = new D2QuarantineProperties().setQuarantineMaxPercent(DEFAULT_QUARANTINE_PERCENTAGE);
    strategyPropertiesWithQuarantineEnabled.put(PropertyKeys.HTTP_LB_QUARANTINE_MAX_PERCENT, String.valueOf(DEFAULT_QUARANTINE_PERCENTAGE));
    relativePropertiesWithQuarantineEnabled.setQuarantineProperties(quarantineProperties);
    LoadBalancerStrategyTestRunnerBuilder builder = new LoadBalancerStrategyTestRunnerBuilder(type, DEFAULT_SERVICE_NAME, 5).setConstantRequestCount(1000).setNumIntervals(10).setConstantLatency(Arrays.asList(UNHEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY, HEALTHY_HOST_CONSTANT_LATENCY));
    LoadBalancerStrategyTestRunner testRunner = type == loadBalancerStrategyType.DEGRADER ? builder.setDegraderStrategies(strategyPropertiesWithQuarantineEnabled, new HashMap<>()).build() : builder.setRelativeLoadBalancerStrategies(relativePropertiesWithQuarantineEnabled).build();
    testRunner.runWait();
    List<Integer> pointHistory = testRunner.getPointHistory().get(testRunner.getUri(0));
    assertEquals(pointHistory.get(9).intValue(), QUARANTINED_POINTS);
}

Example 34 with D2RelativeStrategyProperties

use of com.linkedin.d2.D2RelativeStrategyProperties in project rest.li by linkedin.

the class TestLoadBalancerPerformanceSimulation method buildRelativeRunnerWithRandomLatencyInRange.

private LoadBalancerStrategyTestRunner buildRelativeRunnerWithRandomLatencyInRange(boolean isFastRecovery, long badHostBaseLatency, long regularBaseLatency) {
    int numHosts = 20;
    int numRequestsPerInterval = 20;
    List<LatencyCorrelation> latencyCorrelationList = new ArrayList<>();
    long leftLimit = 0L;
    long rightLimit = 400L;
    latencyCorrelationList.add((requestsPerInterval, intervalIndex) -> badHostBaseLatency + (long) (Math.random() * (rightLimit - leftLimit)));
    for (int i = 1; i < numHosts; i++) {
        latencyCorrelationList.add((requestsPerInterval, intervalIndex) -> regularBaseLatency + (long) (Math.random() * (rightLimit - leftLimit)));
    }
    D2RelativeStrategyProperties relativeStrategyProperties = new D2RelativeStrategyProperties().setEnableFastRecovery(isFastRecovery);
    return new LoadBalancerStrategyTestRunnerBuilder(loadBalancerStrategyType.RELATIVE, DEFAULT_SERVICE_NAME, numHosts).setConstantRequestCount(numRequestsPerInterval).setNumIntervals(200).setDynamicLatency(latencyCorrelationList).setRelativeLoadBalancerStrategies(relativeStrategyProperties).build();
}

Example 35 with D2RelativeStrategyProperties

use of com.linkedin.d2.D2RelativeStrategyProperties in project rest.li by linkedin.

the class TestLoadBalancerPerformanceSimulation method buildRelativeRunnerWithDifferentLatency.

private LoadBalancerStrategyTestRunner buildRelativeRunnerWithDifferentLatency(double relativeLatencyHighThresholdFactor) {
    int minBaseLatency = 100;
    int baseLatencyDiff = 20;
    int numHosts = 10;
    double hostLinearFactor = 0.05;
    List<LatencyCorrelation> latencyCorrelationList = new ArrayList<>();
    for (int i = 0; i < numHosts; i++) {
        long baseLatency = i * baseLatencyDiff + minBaseLatency;
        latencyCorrelationList.add((requestsPerInterval, intervalIndex) -> baseLatency + (long) (hostLinearFactor * requestsPerInterval));
    }
    D2RelativeStrategyProperties relativeStrategyProperties = new D2RelativeStrategyProperties().setRelativeLatencyHighThresholdFactor(relativeLatencyHighThresholdFactor);
    return new LoadBalancerStrategyTestRunnerBuilder(loadBalancerStrategyType.RELATIVE, DEFAULT_SERVICE_NAME, numHosts).setConstantRequestCount(10000).setNumIntervals(100).setDynamicLatency(latencyCorrelationList).setRelativeLoadBalancerStrategies(relativeStrategyProperties).build();
}