Examples with SimpleLoadBalancer com.linkedin.d2.balancer.simple.SimpleLoadBalancer used on opensource projects

Example 21 with SimpleLoadBalancer

use of com.linkedin.d2.balancer.simple.SimpleLoadBalancer in project rest.li by linkedin.

the class RetryClientTest method testRestException.

@Test
public void testRestException() throws Exception {
    SimpleLoadBalancer balancer = prepareLoadBalancer(Arrays.asList("http://test.linkedin.com/retry1", "http://test.linkedin.com/bad"));
    DynamicClient dynamicClient = new DynamicClient(balancer, null);
    RetryClient client = new RetryClient(dynamicClient, 3);
    URI uri = URI.create("d2://retryService?arg1=empty&arg2=empty");
    RestRequest restRequest = new RestRequestBuilder(uri).build();
    TrackerClientTest.TestCallback<RestResponse> restCallback = new TrackerClientTest.TestCallback<RestResponse>();
    RequestContext context = new RequestContext();
    KeyMapper.TargetHostHints.setRequestContextTargetHost(context, URI.create("http://test.linkedin.com/bad"));
    client.restRequest(restRequest, context, restCallback);
    assertNull(restCallback.t);
    assertNotNull(restCallback.e);
    assertTrue(restCallback.e.getMessage().contains("exception happens"));
}

Example 22 with SimpleLoadBalancer

use of com.linkedin.d2.balancer.simple.SimpleLoadBalancer in project rest.li by linkedin.

the class RetryClientTest method testRetry.

@Test
public void testRetry() throws Exception {
    SimpleLoadBalancer balancer = prepareLoadBalancer(Arrays.asList("http://test.linkedin.com/retry1", "http://test.linkedin.com/good"));
    DynamicClient dynamicClient = new DynamicClient(balancer, null);
    RetryClient client = new RetryClient(dynamicClient, 3);
    URI uri = URI.create("d2://retryService?arg1arg2");
    RestRequest restRequest = new RestRequestBuilder(uri).build();
    TrackerClientTest.TestCallback<RestResponse> restCallback = new TrackerClientTest.TestCallback<RestResponse>();
    client.restRequest(restRequest, restCallback);
    assertNull(restCallback.e);
    assertNotNull(restCallback.t);
}

Example 23 with SimpleLoadBalancer

use of com.linkedin.d2.balancer.simple.SimpleLoadBalancer in project rest.li by linkedin.

the class TestScatterGather method testScatterGatherEntityLoadBalancerIntegration.

@Test(dataProvider = "requestBuilderDataProvider")
public static void testScatterGatherEntityLoadBalancerIntegration(RootBuilderWrapper<Long, Greeting> builders) throws Exception {
    SimpleLoadBalancer loadBalancer = MockLBFactory.createLoadBalancer();
    KeyMapper keyMapper = new ConsistentHashKeyMapper(loadBalancer, new TestPartitionInfoProvider());
    try {
        keyMapper.mapKeysV2(URI.create("http://badurischeme/"), new HashSet<String>());
        Assert.fail("keyMapper should reject non-D2 URI scheme");
    } catch (IllegalArgumentException e) {
    //expected
    }
    ScatterGatherBuilder<Greeting> sg = new ScatterGatherBuilder<Greeting>(keyMapper);
    final int NUM_IDS = 20;
    Long[] requestIds = generateIds(NUM_IDS);
    Collection<ScatterGatherBuilder.KVRequestInfo<Long, EntityResponse<Greeting>>> scatterGatherRequests = buildScatterGatherGetEntityRequests(sg, requestIds);
}

Example 24 with SimpleLoadBalancer

use of com.linkedin.d2.balancer.simple.SimpleLoadBalancer in project rest.li by linkedin.

the class MockLBFactory method createLoadBalancer.

static SimpleLoadBalancer createLoadBalancer() {
    // define the load balancing strategies that we support (round robin, etc)
    Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
    loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
    Map<String, TransportClientFactory> clientFactories = new HashMap<String, TransportClientFactory>();
    clientFactories.put("http", new HttpClientFactory());
    SynchronousExecutorService executorService = new SynchronousExecutorService();
    MockStore<ServiceProperties> serviceRegistry = new MockStore<ServiceProperties>();
    MockStore<ClusterProperties> clusterRegistry = new MockStore<ClusterProperties>();
    MockStore<UriProperties> uriRegistry = new MockStore<UriProperties>();
    SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
    state.listenToService("greetings", new LoadBalancerState.NullStateListenerCallback());
    state.listenToService("groups", new LoadBalancerState.NullStateListenerCallback());
    state.listenToCluster("testcluster", new LoadBalancerState.NullStateListenerCallback());
    state.listenToCluster("badcluster", new LoadBalancerState.NullStateListenerCallback());
    List<String> schemes = new ArrayList<String>();
    schemes.add("http");
    Map<String, Object> metadataProperties = new HashMap<String, Object>();
    metadataProperties.put(RestConstants.RESTLI_PROTOCOL_VERSION_PROPERTY, AllProtocolVersions.BASELINE_PROTOCOL_VERSION.toString());
    serviceRegistry.put("greetings", new ServiceProperties("greetings", "testcluster", "/greetings", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, schemes, null, metadataProperties));
    serviceRegistry.put("groups", new ServiceProperties("groups", "badcluster", "/groups", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, schemes, null, metadataProperties));
    clusterRegistry.put("testcluster", new ClusterProperties("testcluster"));
    clusterRegistry.put("badcluster", new ClusterProperties("badcluster"));
    uriRegistry.put("testcluster", new UriProperties("testcluster", createUriData("http://localhost:1338")));
    uriRegistry.put("badcluster", new UriProperties("badcluster", createUriData("http://localhost:1337")));
    // create the load balancer
    return new SimpleLoadBalancer(state);
}