Examples with DegraderLoadBalancerTest com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest used on opensource projects

Example 16 with DegraderLoadBalancerTest

use of com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest in project rest.li by linkedin.

the class DegraderLoadBalancerTest method testStateIsNotNullAndCallCountIsZero.

@Test(groups = { "small", "back-end" })
public void testStateIsNotNullAndCallCountIsZero() throws URISyntaxException {
    DegraderLoadBalancerStrategyV3 strategy = new DegraderLoadBalancerStrategyV3(new DegraderLoadBalancerStrategyConfig(5000), "DegraderLoadBalancerTest", null);
    List<TrackerClient> clients = new ArrayList<TrackerClient>();
    SettableClock clock1 = new SettableClock();
    SettableClock clock2 = new SettableClock();
    clients.add(getClient(URI.create("http://test.linkedin.com:3242/fdsaf"), clock1));
    clients.add(getClient(URI.create("http://test.linkedin.com:3243/fdsaf"), clock2));
    clock1.addDuration(5000);
    // this should trigger setting _state (generation id is different) with an override
    // of 0d
    getTrackerClient(strategy, null, new RequestContext(), 0, clients);
    // should not have overridden anything, and default is 0
    for (TrackerClient client : clients) {
        assertEquals(client.getDegraderControl(DEFAULT_PARTITION_ID).getOverrideDropRate(), 0d);
    }
    // this should trigger setting _state (state is null and count > 0) with an override
    // of 0d
    assertNotNull(getTrackerClient(strategy, null, new RequestContext(), -1, clients));
}

Example 17 with DegraderLoadBalancerTest

use of com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest in project rest.li by linkedin.

the class DegraderLoadBalancerTest method testClusterRecoveryFast1TC.

@Test(groups = { "small", "back-end" })
public void testClusterRecoveryFast1TC() {
    Map<String, Object> myMap = new HashMap<String, Object>();
    Long timeInterval = 5000L;
    TestClock clock = new TestClock();
    myMap.put(PropertyKeys.CLOCK, clock);
    // This recovery level will put one point into the hash ring, which is good enough to
    // send traffic to it because it is the only member of the cluster.
    myMap.put("initialRecoverLevel", 0.01);
    myMap.put(PropertyKeys.HTTP_LB_RING_RAMP_FACTOR, 2.0);
    myMap.put(PropertyKeys.HTTP_LB_STRATEGY_PROPERTIES_UPDATE_INTERVAL_MS, timeInterval);
    int stepsToFullRecovery = 0;
    //test Strategy V3
    DegraderLoadBalancerStrategyConfig config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV3 strategyV3 = new DegraderLoadBalancerStrategyV3(config, "DegraderLoadBalancerTest", null);
    DegraderLoadBalancerStrategyAdapter strategy = new DegraderLoadBalancerStrategyAdapter(strategyV3);
    clusterRecovery1TC(myMap, clock, stepsToFullRecovery, timeInterval, strategy, null, DegraderLoadBalancerStrategyV3.PartitionDegraderLoadBalancerState.Strategy.LOAD_BALANCE);
    //test Strategy V2
    config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV2_1 strategyV2 = new DegraderLoadBalancerStrategyV2_1(config, "DegraderLoadBalancerTest", null);
    strategy = new DegraderLoadBalancerStrategyAdapter(strategyV2);
    clusterRecovery1TC(myMap, clock, stepsToFullRecovery, timeInterval, strategy, DegraderLoadBalancerStrategyV2_1.DegraderLoadBalancerState.Strategy.LOAD_BALANCE, null);
}

Example 18 with DegraderLoadBalancerTest

use of com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest in project rest.li by linkedin.

the class DegraderLoadBalancerTest method testMediumTrafficHighLatency1Client.

@Test(groups = { "small", "back-end" })
public void testMediumTrafficHighLatency1Client() {
    Map<String, Object> myMap = new HashMap<String, Object>();
    Long timeInterval = 5000L;
    TestClock clock = new TestClock();
    myMap.put(PropertyKeys.CLOCK, clock);
    myMap.put(PropertyKeys.HTTP_LB_STRATEGY_PROPERTIES_UPDATE_INTERVAL_MS, timeInterval);
    Map<String, String> degraderProperties = new HashMap<String, String>();
    degraderProperties.put(PropertyKeys.DEGRADER_HIGH_ERROR_RATE, "0.5");
    degraderProperties.put(PropertyKeys.DEGRADER_LOW_ERROR_RATE, "0.2");
    DegraderImpl.Config degraderConfig = DegraderConfigFactory.toDegraderConfig(degraderProperties);
    double qps = 5.7;
    //test Strategy V3
    List<TrackerClient> clients = createTrackerClient(1, clock, degraderConfig);
    DegraderLoadBalancerStrategyConfig config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV3 strategyV3 = new DegraderLoadBalancerStrategyV3(config, "DegraderLoadBalancerTest", null);
    DegraderLoadBalancerStrategyAdapter strategy = new DegraderLoadBalancerStrategyAdapter(strategyV3);
    testDegraderLoadBalancerSimulator(strategy, clock, timeInterval, clients, qps, degraderConfig);
    //test Strategy V2
    clients = createTrackerClient(1, clock, degraderConfig);
    config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV2_1 strategyV2 = new DegraderLoadBalancerStrategyV2_1(config, "DegraderLoadBalancerTest", null);
    strategy = new DegraderLoadBalancerStrategyAdapter(strategyV2);
    testDegraderLoadBalancerSimulator(strategy, clock, timeInterval, clients, qps, degraderConfig);
}

Example 19 with DegraderLoadBalancerTest

use of com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest in project rest.li by linkedin.

the class DegraderLoadBalancerTest method testLowTrafficHighLatency100Clients.

@Test(groups = { "small", "back-end" })
public void testLowTrafficHighLatency100Clients() {
    Map<String, Object> myMap = new HashMap<String, Object>();
    Long timeInterval = 5000L;
    TestClock clock = new TestClock();
    myMap.put(PropertyKeys.CLOCK, clock);
    myMap.put(PropertyKeys.HTTP_LB_STRATEGY_PROPERTIES_UPDATE_INTERVAL_MS, timeInterval);
    //we need to override the min call count to 0 because we're testing a service with low traffic.
    //if we don't do this, the computedDropRate will not change and we will never be able to recover
    //after we degraded the cluster.
    Map<String, String> degraderImplProperties = new HashMap<String, String>();
    degraderImplProperties.put(PropertyKeys.DEGRADER_MIN_CALL_COUNT, "1");
    degraderImplProperties.put(PropertyKeys.DEGRADER_HIGH_ERROR_RATE, "0.5");
    degraderImplProperties.put(PropertyKeys.DEGRADER_LOW_ERROR_RATE, "0.2");
    DegraderImpl.Config degraderConfig = DegraderConfigFactory.toDegraderConfig(degraderImplProperties);
    double qps = 0.3;
    //test Strategy V3
    List<TrackerClient> clients = createTrackerClient(100, clock, degraderConfig);
    DegraderLoadBalancerStrategyConfig config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV3 strategyV3 = new DegraderLoadBalancerStrategyV3(config, "DegraderLoadBalancerTest", null);
    DegraderLoadBalancerStrategyAdapter strategy = new DegraderLoadBalancerStrategyAdapter(strategyV3);
    testDegraderLoadBalancerSimulator(strategy, clock, timeInterval, clients, qps, degraderConfig);
    //test Strategy V2
    clients = createTrackerClient(100, clock, degraderConfig);
    config = DegraderLoadBalancerStrategyConfig.createHttpConfigFromMap(myMap);
    DegraderLoadBalancerStrategyV2_1 strategyV2 = new DegraderLoadBalancerStrategyV2_1(config, "DegraderLoadBalancerTest", null);
    strategy = new DegraderLoadBalancerStrategyAdapter(strategyV2);
    testDegraderLoadBalancerSimulator(strategy, clock, timeInterval, clients, qps, degraderConfig);
}

Example 20 with DegraderLoadBalancerTest

use of com.linkedin.d2.balancer.strategies.degrader.DegraderLoadBalancerTest in project rest.li by linkedin.

the class DegraderLoadBalancerTest method testStateIsNullAndCallCountIsGreaterThanZero.

@Test(groups = { "small", "back-end" })
public void testStateIsNullAndCallCountIsGreaterThanZero() throws URISyntaxException, InterruptedException {
    // check for average cluster latency < max latency
    // max so we don't time out from lag on testing machine
    DegraderLoadBalancerStrategyV3 strategy = new DegraderLoadBalancerStrategyV3(new DegraderLoadBalancerStrategyConfig(5000), "DegraderLoadBalancerTest", null);
    List<TrackerClient> clients = new ArrayList<TrackerClient>();
    TestClock clock1 = new TestClock();
    TestClock clock2 = new TestClock();
    clients.add(getClient(URI.create("http://test.linkedin.com:3242/fdsaf"), clock1));
    clients.add(getClient(URI.create("http://test.linkedin.com:3243/fdsaf"), clock2));
    for (int i = 0; i < 1000; ++i) {
        clients.get(i % 2).getCallTracker().startCall().endCall();
    }
    clock1.addMs(5000);
    // this should trigger setting _state (state is null and count > 0) with an override
    // of 0d
    getTrackerClient(strategy, null, new RequestContext(), -1, clients);
    for (TrackerClient client : clients) {
        assertEquals(client.getDegraderControl(DEFAULT_PARTITION_ID).getOverrideDropRate(), 0d);
    }
}