Examples with DarkClusterStrategy com.linkedin.darkcluster.api.DarkClusterStrategy used on opensource projects

Example 6 with DarkClusterStrategy

use of com.linkedin.darkcluster.api.DarkClusterStrategy in project rest.li by linkedin.

the class TestDarkClusterManager method testWithDarkHeaders.

@Test
public void testWithDarkHeaders() {
    MockClusterInfoProvider clusterInfoProvider = new MockClusterInfoProvider();
    Facilities facilities = new MockFacilities(clusterInfoProvider);
    // This configuration will choose the RelativeTrafficMultiplierDarkClusterStrategy
    DarkClusterConfig darkClusterConfig = createRelativeTrafficMultiplierConfig(1.0f);
    clusterInfoProvider.addDarkClusterConfig(SOURCE_CLUSTER_NAME, DARK_CLUSTER_NAME, darkClusterConfig);
    DarkClusterStrategyFactory mockStrategyFactory = Mockito.mock(DarkClusterStrategyFactory.class);
    DarkClusterStrategy mockDarkStrategy = Mockito.mock(DarkClusterStrategy.class);
    DarkRequestHeaderGenerator darkRequestHeaderGenerator = Mockito.mock(DarkRequestHeaderGenerator.class);
    Mockito.when(mockStrategyFactory.get(DARK_CLUSTER_NAME)).thenReturn(mockDarkStrategy);
    Mockito.when(darkRequestHeaderGenerator.get(DARK_CLUSTER_NAME)).thenReturn(Optional.of(new DarkRequestHeaderGenerator.HeaderNameValuePair("header", "value")));
    RestRequest restRequest = new RestRequestBuilder(URI.create("/abc")).setMethod(METHOD_SAFE).build();
    RestRequest darkRequest = new RestRequestBuilder(URI.create("d2://" + DARK_CLUSTER_NAME + "/abc")).setMethod(METHOD_SAFE).setHeader("header", "value").build();
    RequestContext requestContext = new RequestContext();
    Mockito.when(mockDarkStrategy.handleRequest(restRequest, darkRequest, new RequestContext(requestContext))).thenReturn(true);
    DarkClusterManager darkClusterManager = new DarkClusterManagerImpl(SOURCE_CLUSTER_NAME, facilities, mockStrategyFactory, null, null, new DoNothingNotifier(), null, Collections.singletonList(darkRequestHeaderGenerator));
    boolean status = darkClusterManager.handleDarkRequest(restRequest, requestContext);
    Assert.assertTrue(status);
}

Example 7 with DarkClusterStrategy

use of com.linkedin.darkcluster.api.DarkClusterStrategy in project rest.li by linkedin.

the class TestDarkClusterStrategyFactory method testStrategyFallThru.

@Test
public void testStrategyFallThru() {
    DarkClusterConfig darkClusterConfig1 = createRelativeTrafficMultiplierConfig(0.5f);
    DarkClusterStrategyNameArray darkClusterStrategyList = new DarkClusterStrategyNameArray();
    darkClusterStrategyList.addAll(Arrays.asList(CONSTANT_QPS, RELATIVE_TRAFFIC));
    darkClusterConfig1.setDarkClusterStrategyPrioritizedList(darkClusterStrategyList);
    _clusterInfoProvider.addDarkClusterConfig(SOURCE_CLUSTER_NAME, DARK_CLUSTER_NAME, darkClusterConfig1);
    _clusterInfoProvider.notifyListenersClusterAdded(SOURCE_CLUSTER_NAME);
    DarkClusterStrategy strategy = _strategyFactory.get(DARK_CLUSTER_NAME);
    // test that we didn't find a strategy corresponding to Constant QPS and fell through to Relative traffic
    Assert.assertTrue(strategy instanceof RelativeTrafficMultiplierDarkClusterStrategy);
    Assert.assertEquals(((RelativeTrafficMultiplierDarkClusterStrategy) strategy).getMultiplier(), 0.5f, "expected 0.5f multiplier");
}

Example 8 with DarkClusterStrategy

use of com.linkedin.darkcluster.api.DarkClusterStrategy in project rest.li by linkedin.

the class TestDarkClusterStrategyFactory method testStrategyPopulatedWithoutExplicitUpdate.

@Test
public void testStrategyPopulatedWithoutExplicitUpdate() {
    DarkClusterStrategy strategy = _strategyFactory.get(PREEXISTING_DARK_CLUSTER_NAME);
    Assert.assertTrue(strategy instanceof RelativeTrafficMultiplierDarkClusterStrategy);
    Assert.assertEquals(((RelativeTrafficMultiplierDarkClusterStrategy) strategy).getMultiplier(), 0.5f, "expected 0.5f multiplier");
}

Example 9 with DarkClusterStrategy

use of com.linkedin.darkcluster.api.DarkClusterStrategy in project rest.li by linkedin.

the class TestDarkClusterStrategyFactory method testChangingStrategiesAfterStoppingListener.

@Test
public void testChangingStrategiesAfterStoppingListener() {
    DarkClusterConfig darkClusterConfig1 = createRelativeTrafficMultiplierConfig(0.5f);
    DarkClusterConfig darkClusterConfig2 = createRelativeTrafficMultiplierConfig(0.1f);
    _clusterInfoProvider.addDarkClusterConfig(SOURCE_CLUSTER_NAME, DARK_CLUSTER_NAME, darkClusterConfig1);
    _clusterInfoProvider.notifyListenersClusterAdded(SOURCE_CLUSTER_NAME);
    DarkClusterStrategy strategy = _strategyFactory.get(DARK_CLUSTER_NAME);
    Assert.assertTrue(strategy instanceof RelativeTrafficMultiplierDarkClusterStrategy);
    Assert.assertEquals(((RelativeTrafficMultiplierDarkClusterStrategy) strategy).getMultiplier(), 0.5f, "expected 0.5f multiplier");
    _strategyFactory.shutdown();
    // update the strategy.
    _clusterInfoProvider.addDarkClusterConfig(SOURCE_CLUSTER_NAME, DARK_CLUSTER_NAME, darkClusterConfig2);
    _clusterInfoProvider.notifyListenersClusterAdded(SOURCE_CLUSTER_NAME);
    // Nothing should have been changed, since we shutdown down the listener
    DarkClusterStrategy strategy2 = _strategyFactory.get(DARK_CLUSTER_NAME);
    Assert.assertTrue(strategy2 instanceof RelativeTrafficMultiplierDarkClusterStrategy);
    Assert.assertEquals(((RelativeTrafficMultiplierDarkClusterStrategy) strategy2).getMultiplier(), 0.5f, "expected 0.5f multiplier");
}

Example 10 with DarkClusterStrategy

use of com.linkedin.darkcluster.api.DarkClusterStrategy in project rest.li by linkedin.

the class TestDarkClusterStrategyFactory method testStrategyZeroMultiplier.

@Test
public void testStrategyZeroMultiplier() {
    DarkClusterConfig darkClusterConfig1 = createRelativeTrafficMultiplierConfig(0f);
    DarkClusterStrategyNameArray darkClusterStrategyList = new DarkClusterStrategyNameArray();
    darkClusterStrategyList.addAll(Collections.singletonList(RELATIVE_TRAFFIC));
    darkClusterConfig1.setDarkClusterStrategyPrioritizedList(darkClusterStrategyList);
    _clusterInfoProvider.addDarkClusterConfig(SOURCE_CLUSTER_NAME, DARK_CLUSTER_NAME, darkClusterConfig1);
    DarkClusterStrategy strategy = _strategyFactory.get(DARK_CLUSTER_NAME);
    // test that we choose a NoOpDarkClusterStrategy because we want to allow RelativeTrafficMultiplierStrategy with a zero muliplier to be
    // a NoOp. This allows clients to easily turn off traffic without adjusting multiple values.
    Assert.assertTrue(strategy instanceof NoOpDarkClusterStrategy);
}