Examples with RewriteLoadBalancerClient com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient used on opensource projects

Example 6 with RewriteLoadBalancerClient

use of com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient in project rest.li by linkedin.

the class RewriteLoadBalancerClientTestStreamRequest method testWithEverything.

@Test
public void testWithEverything() {
    URI uri = URI.create("http://username:password@test.linkedin.com:9876/test");
    String serviceName = "HistoryService";
    TestClient wrappedClient = new TestClient();
    RewriteLoadBalancerClient client = new RewriteLoadBalancerClient(serviceName, uri, wrappedClient);
    assertEquals(client.getUri(), uri);
    assertEquals(client.getServiceName(), serviceName);
    StreamRequest streamRequest = getRequest("d2://HistoryService/getCube?bar=baz#fragId");
    Map<String, String> restWireAttrs = new HashMap<>();
    TestTransportCallback<StreamResponse> restCallback = new TestTransportCallback<>();
    client.streamRequest(streamRequest, new RequestContext(), restWireAttrs, restCallback);
    assertFalse(restCallback.response.hasError());
    assertEquals(wrappedClient.streamRequest.getHeaders(), streamRequest.getHeaders());
    assertEquals(wrappedClient.streamRequest.getMethod(), streamRequest.getMethod());
    assertEquals(wrappedClient.streamRequest.getURI(), URI.create("http://username:password@test.linkedin.com:9876/test/getCube?bar=baz#fragId"));
}

Example 7 with RewriteLoadBalancerClient

use of com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient in project rest.li by linkedin.

the class RewriteLoadBalancerClientTestStreamRequest method testWithQueryAndFragment.

@Test
public void testWithQueryAndFragment() {
    URI uri = URI.create("http://test.linkedin.com/test");
    String serviceName = "HistoryService";
    TestClient wrappedClient = new TestClient();
    RewriteLoadBalancerClient client = new RewriteLoadBalancerClient(serviceName, uri, wrappedClient);
    assertEquals(client.getUri(), uri);
    assertEquals(client.getServiceName(), serviceName);
    StreamRequest streamRequest = getRequest("d2://HistoryService/getCube?bar=baz#fragId");
    Map<String, String> restWireAttrs = new HashMap<>();
    TestTransportCallback<StreamResponse> restCallback = new TestTransportCallback<>();
    client.streamRequest(streamRequest, new RequestContext(), restWireAttrs, restCallback);
    assertFalse(restCallback.response.hasError());
    assertEquals(wrappedClient.streamRequest.getHeaders(), streamRequest.getHeaders());
    assertEquals(wrappedClient.streamRequest.getMethod(), streamRequest.getMethod());
    assertEquals(wrappedClient.streamRequest.getURI(), URI.create("http://test.linkedin.com/test/getCube?bar=baz#fragId"));
}

Example 8 with RewriteLoadBalancerClient

use of com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient in project rest.li by linkedin.

the class SimpleLoadBalancerTest method testGetClientHostOverrideList.

/**
 * Tests getClient() when with host override list specified in the request context.
 * @throws Exception
 */
@Test
public void testGetClientHostOverrideList() throws Exception {
    Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<>();
    Map<String, TransportClientFactory> clientFactories = new HashMap<>();
    List<String> prioritizedSchemes = new ArrayList<>();
    MockStore<ServiceProperties> serviceRegistry = new MockStore<>();
    MockStore<ClusterProperties> clusterRegistry = new MockStore<>();
    MockStore<UriProperties> uriRegistry = new MockStore<>();
    ScheduledExecutorService executorService = new SynchronousExecutorService();
    loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
    clientFactories.put(PropertyKeys.HTTP_SCHEME, new DoNothingClientFactory());
    SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
    SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS, _d2Executor);
    FutureCallback<None> balancerCallback = new FutureCallback<>();
    loadBalancer.start(balancerCallback);
    balancerCallback.get();
    Map<Integer, PartitionData> partitionData = new HashMap<>(1);
    partitionData.put(DEFAULT_PARTITION_ID, new PartitionData(1d));
    Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<>(2);
    uriData.put(URI.create("http://host1/path"), partitionData);
    prioritizedSchemes.add(PropertyKeys.HTTP_SCHEME);
    String cluster1 = "Cluster1";
    String cluster2 = "Cluster2";
    String service1 = "service1";
    clusterRegistry.put(cluster1, new ClusterProperties(cluster1, Collections.emptyList(), Collections.emptyMap(), new HashSet<>(), NullPartitionProperties.getInstance()));
    serviceRegistry.put(service1, new ServiceProperties(service1, cluster1, "/service1Path", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
    uriRegistry.put(cluster1, new UriProperties(cluster1, uriData));
    URI override = URI.create("http://override/path");
    URI expected = URI.create("http://override/path/service1Path");
    URIRequest uriRequest = new URIRequest("d2://service1");
    HostOverrideList clusterOverrides = new HostOverrideList();
    clusterOverrides.addClusterOverride(cluster1, override);
    RequestContext clusterContext = new RequestContext();
    clusterContext.putLocalAttr(HOST_OVERRIDE_LIST, clusterOverrides);
    Assert.assertEquals(((RewriteLoadBalancerClient) loadBalancer.getClient(uriRequest, clusterContext)).getUri(), URI.create("http://override/path/service1Path"));
    HostOverrideList serviceOverrides = new HostOverrideList();
    serviceOverrides.addServiceOverride(service1, override);
    RequestContext serviceContext = new RequestContext();
    serviceContext.putLocalAttr(HOST_OVERRIDE_LIST, serviceOverrides);
    Assert.assertEquals(((RewriteLoadBalancerClient) loadBalancer.getClient(uriRequest, serviceContext)).getUri(), URI.create("http://override/path/service1Path"));
    HostOverrideList overrides = new HostOverrideList();
    overrides.addOverride(override);
    RequestContext context = new RequestContext();
    context.putLocalAttr(HOST_OVERRIDE_LIST, overrides);
    Assert.assertEquals(((RewriteLoadBalancerClient) loadBalancer.getClient(uriRequest, context)).getUri(), URI.create("http://override/path/service1Path"));
    HostOverrideList unrelatedClusterOverrides = new HostOverrideList();
    unrelatedClusterOverrides.addClusterOverride(cluster2, override);
    RequestContext unrelatedClusterContext = new RequestContext();
    unrelatedClusterContext.putLocalAttr(HOST_OVERRIDE_LIST, unrelatedClusterOverrides);
    Assert.assertEquals(((RewriteLoadBalancerClient) loadBalancer.getClient(uriRequest, unrelatedClusterContext)).getUri(), URI.create("http://host1/path/service1Path"));
    HostOverrideList unrelatedServiceOverrides = new HostOverrideList();
    unrelatedServiceOverrides.addClusterOverride(cluster2, override);
    RequestContext unrelatedServiceContext = new RequestContext();
    unrelatedServiceContext.putLocalAttr(HOST_OVERRIDE_LIST, unrelatedServiceOverrides);
    Assert.assertEquals(((RewriteLoadBalancerClient) loadBalancer.getClient(uriRequest, unrelatedServiceContext)).getUri(), URI.create("http://host1/path/service1Path"));
}

Example 9 with RewriteLoadBalancerClient

use of com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient in project rest.li by linkedin.

the class SimpleLoadBalancerTest method testLoadBalancerDropRate.

/**
 * This test simulates dropping requests by playing with OverrideDropRate in config
 */
@Test(groups = { "small", "back-end" })
public void testLoadBalancerDropRate() throws ServiceUnavailableException, ExecutionException, InterruptedException {
    final int RETRY = 10;
    for (int tryAgain = 0; tryAgain < RETRY; ++tryAgain) {
        Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<>();
        Map<String, TransportClientFactory> clientFactories = new HashMap<>();
        List<String> prioritizedSchemes = new ArrayList<>();
        MockStore<ServiceProperties> serviceRegistry = new MockStore<>();
        MockStore<ClusterProperties> clusterRegistry = new MockStore<>();
        MockStore<UriProperties> uriRegistry = new MockStore<>();
        ScheduledExecutorService executorService = new SynchronousExecutorService();
        // loadBalancerStrategyFactories.put("rr", new RandomLoadBalancerStrategyFactory());
        loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
        // PrpcClientFactory();
        // new
        clientFactories.put(PropertyKeys.HTTP_SCHEME, new DoNothingClientFactory());
        // HttpClientFactory();
        SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
        SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS, _d2Executor);
        FutureCallback<None> balancerCallback = new FutureCallback<>();
        loadBalancer.start(balancerCallback);
        balancerCallback.get();
        URI uri1 = URI.create("http://test.qa1.com:1234");
        URI uri2 = URI.create("http://test.qa2.com:2345");
        URI uri3 = URI.create("http://test.qa3.com:6789");
        Map<Integer, PartitionData> partitionData = new HashMap<>(1);
        partitionData.put(DEFAULT_PARTITION_ID, new PartitionData(1d));
        Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<>(3);
        uriData.put(uri1, partitionData);
        uriData.put(uri2, partitionData);
        uriData.put(uri3, partitionData);
        prioritizedSchemes.add(PropertyKeys.HTTP_SCHEME);
        clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
        serviceRegistry.put("foo", new ServiceProperties("foo", "cluster-1", "/foo", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
        uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
        URI expectedUri1 = URI.create("http://test.qa1.com:1234/foo");
        URI expectedUri2 = URI.create("http://test.qa2.com:2345/foo");
        URI expectedUri3 = URI.create("http://test.qa3.com:6789/foo");
        Set<URI> expectedUris = new HashSet<>();
        expectedUris.add(expectedUri1);
        expectedUris.add(expectedUri2);
        expectedUris.add(expectedUri3);
        Random random = new Random();
        for (int i = 0; i < 100; ++i) {
            try {
                RewriteLoadBalancerClient client = (RewriteLoadBalancerClient) loadBalancer.getClient(new URIRequest("d2://foo/52"), new RequestContext());
                assertTrue(client.getDecoratedClient() instanceof RewriteClient);
                RewriteClient rewriteClient = (RewriteClient) client.getDecoratedClient();
                assertTrue(rewriteClient.getDecoratedClient() instanceof TrackerClient);
                DegraderTrackerClient tClient = (DegraderTrackerClient) rewriteClient.getDecoratedClient();
                DegraderImpl degrader = (DegraderImpl) tClient.getDegrader(DEFAULT_PARTITION_ID);
                DegraderImpl.Config cfg = new DegraderImpl.Config(degrader.getConfig());
                // Change DropRate to 0.0 at the rate of 1/3
                cfg.setOverrideDropRate((random.nextInt(2) == 0) ? 1.0 : 0.0);
                degrader.setConfig(cfg);
                assertTrue(expectedUris.contains(client.getUri()));
                assertEquals(client.getUri().getScheme(), PropertyKeys.HTTP_SCHEME);
            } catch (ServiceUnavailableException e) {
                assertTrue(e.toString().contains("in a bad state (high latency/high error)"));
            }
        }
        final CountDownLatch latch = new CountDownLatch(1);
        PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {

            @Override
            public void done() {
                latch.countDown();
            }
        };
        state.shutdown(callback);
        if (!latch.await(60, TimeUnit.SECONDS)) {
            fail("unable to shutdown state");
        }
        executorService.shutdownNow();
        assertTrue(executorService.isShutdown(), "ExecutorService should have shut down!");
    }
}

Example 10 with RewriteLoadBalancerClient

use of com.linkedin.d2.balancer.clients.RewriteLoadBalancerClient in project rest.li by linkedin.

the class SimpleLoadBalancerTest method testLoadBalancerSmoke.

@Test(groups = { "small", "back-end" })
public void testLoadBalancerSmoke() throws URISyntaxException, ServiceUnavailableException, InterruptedException, ExecutionException {
    for (int tryAgain = 0; tryAgain < 1000; ++tryAgain) {
        Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<>();
        Map<String, TransportClientFactory> clientFactories = new HashMap<>();
        List<String> prioritizedSchemes = new ArrayList<>();
        MockStore<ServiceProperties> serviceRegistry = new MockStore<>();
        MockStore<ClusterProperties> clusterRegistry = new MockStore<>();
        MockStore<UriProperties> uriRegistry = new MockStore<>();
        ScheduledExecutorService executorService = new SynchronousExecutorService();
        // loadBalancerStrategyFactories.put("rr", new RandomLoadBalancerStrategyFactory());
        loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
        // PrpcClientFactory();
        // new
        clientFactories.put(PropertyKeys.HTTP_SCHEME, new DoNothingClientFactory());
        // HttpClientFactory();
        SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
        SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS, _d2Executor);
        FutureCallback<None> balancerCallback = new FutureCallback<>();
        loadBalancer.start(balancerCallback);
        balancerCallback.get();
        URI uri1 = URI.create("http://test.qa1.com:1234");
        URI uri2 = URI.create("http://test.qa2.com:2345");
        URI uri3 = URI.create("http://test.qa3.com:6789");
        Map<Integer, PartitionData> partitionData = new HashMap<>(1);
        partitionData.put(DEFAULT_PARTITION_ID, new PartitionData(1d));
        Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<>(3);
        uriData.put(uri1, partitionData);
        uriData.put(uri2, partitionData);
        uriData.put(uri3, partitionData);
        prioritizedSchemes.add(PropertyKeys.HTTP_SCHEME);
        clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
        serviceRegistry.put("foo", new ServiceProperties("foo", "cluster-1", "/foo", Arrays.asList("degrader"), Collections.<String, Object>emptyMap(), null, null, prioritizedSchemes, null));
        uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
        URI expectedUri1 = URI.create("http://test.qa1.com:1234/foo");
        URI expectedUri2 = URI.create("http://test.qa2.com:2345/foo");
        URI expectedUri3 = URI.create("http://test.qa3.com:6789/foo");
        Set<URI> expectedUris = new HashSet<>();
        expectedUris.add(expectedUri1);
        expectedUris.add(expectedUri2);
        expectedUris.add(expectedUri3);
        for (int i = 0; i < 100; ++i) {
            RewriteLoadBalancerClient client = (RewriteLoadBalancerClient) loadBalancer.getClient(new URIRequest("d2://foo/52"), new RequestContext());
            assertTrue(expectedUris.contains(client.getUri()));
            assertEquals(client.getUri().getScheme(), PropertyKeys.HTTP_SCHEME);
        }
        final CountDownLatch latch = new CountDownLatch(1);
        PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {

            @Override
            public void done() {
                latch.countDown();
            }
        };
        state.shutdown(callback);
        if (!latch.await(60, TimeUnit.SECONDS)) {
            fail("unable to shutdown state");
        }
        executorService.shutdownNow();
        assertTrue(executorService.isShutdown(), "ExecutorService should have shut down!");
    }
}