Package com.linkedin.d2.balancer.clients

Examples of com.linkedin.d2.balancer.clients.RewriteClientTest


    // one for uri onAdd
    ++expectedVersion;

    assertEquals(_state.getVersion(), expectedVersion);

    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "random"));

    // one for service onAdd
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    Map<String,Object> transportClientProperties = new HashMap<String,Object>();
    transportClientProperties.put(HttpClientFactory.HTTP_SSL_CONTEXT, _sslContext);
    transportClientProperties.put(HttpClientFactory.HTTP_SSL_PARAMS, _sslParameters);
    transportClientProperties = Collections.unmodifiableMap(transportClientProperties);

    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                            transportClientProperties, null, schemes, null));

    assertNull(_state.getClient("service-1", uri));
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    compressionOperations.add("get_all");
    transportClientProperties.put(PropertyKeys.HTTP_RESPONSE_COMPRESSION_OPERATIONS, compressionOperations);

    transportClientProperties = Collections.unmodifiableMap(transportClientProperties);

    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                            transportClientProperties, null, schemes, null));

    assertNull(_state.getClient("service-1", uri));
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    _state.listenToService("service-1", new NullStateListenerCallback());

    assertNull(_state.getClient("service-1", uri));

    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                             null, null, schemes, null));

    assertNull(_state.getClient("service-1", uri));

    _uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));

    TrackerClient client = _state.getClient("service-1", uri);

    assertNotNull(client);
    assertEquals(client.getUri(), uri);

    //now we publish an event that tells service-1 changes cluster. Now it's hosted in cluster-2
    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-2",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                             null, null, schemes, null));

    //this time, since we haven't listened to cluster-2 and there's no uri in cluster-2, we get no client.
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    assertNull(_state.getClient("service-1", uri));

    Map<String,Object> transportProperties = new HashMap<String,Object>();
    transportProperties.put("foobar", "unsupportedValue");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                            transportProperties, null, schemes, null));

    // we add the property first before listening to the service because the MockStore will
    // immediately publish to the eventBus when listenToService() is called, whereas the
    // ZooKeeper stores wait until we get a response back from zookeeper, which triggers handlePut.
    CountDownLatch cdl1 = new CountDownLatch(1);
    _state.listenToService("service-1", new SimpleLoadBalancer.SimpleLoadBalancerCountDownCallback(cdl1));

    // Verify the callback did NOT get invoked, i.e., the exception was thrown during handlePut()
    assertEquals(cdl1.getCount(), 1);

    // set up state
    CountDownLatch cdl2 = new CountDownLatch(1);
    _state.listenToCluster("cluster-1", new SimpleLoadBalancer.SimpleLoadBalancerCountDownCallback(cdl2));
    assertTrue(cdl2.await(60, TimeUnit.SECONDS));

    _uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));

    assertNull(_state.getClient("service-1", uri));

    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
                                                            "/test", "random", null,
                                                            Collections.<String, Object>emptyMap(),
                                                            null, null, schemes, null));

    CountDownLatch cdl = new CountDownLatch(1);
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    uriData.put(uri, partitionDataMap);

    schemes.add("http");
    _state.listenToCluster("cluster-1", new NullStateListenerCallback());
    _state.listenToService("service-1", new NullStateListenerCallback());
    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1",
        "/test", "random", null,
        Collections.<String, Object>emptyMap(),
        null, null, schemes, null));

    // first we announce uri with empty partition data map
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      writeConfig(ZKFSUtil.clusterPath(_basePath), new ClusterPropertiesJsonSerializer(),
                  new ClusterPropertiesJsonSerializer(), clusters, _clusterDefaults);
      _log.info("Wrote cluster configuration");

      _log.info("Service configuration:\n" + services);
      writeConfig(ZKFSUtil.servicePath(_basePath), new ServicePropertiesJsonSerializer(),
                  new ServicePropertiesJsonSerializer(), services, _serviceDefaults);
      _log.info("Wrote service configuration");

      if (!serviceVariants.isEmpty())
      {
        for (Map.Entry<String,Map<String,Map<String,Object>>> entry : serviceVariants.entrySet())
        {
          if (_log.isDebugEnabled())
          {
            _log.info("serviceVariant: "+ entry + "\n");
          }
          else
          {
            _log.info("serviceVariant: "+ entry.getKey() + "\n");
          }
          writeConfig(ZKFSUtil.servicePath(_basePath,entry.getKey()), new ServicePropertiesJsonSerializer(),
                      new ServicePropertiesJsonSerializer(), entry.getValue(), _serviceDefaults);
        }
        _log.info("Wrote service variant configurations");
      }

      _log.info("Configuration complete");
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  {
    _log.info("Using d2ServicePath: " + _d2ServicePath);
    ZooKeeperPermanentStore<ClusterProperties> zkClusterRegistry = createPermanentStore(
            zkConnection, ZKFSUtil.clusterPath(_baseZKPath), new ClusterPropertiesJsonSerializer());
    ZooKeeperPermanentStore<ServiceProperties> zkServiceRegistry = createPermanentStore(
            zkConnection, ZKFSUtil.servicePath(_baseZKPath, _d2ServicePath), new ServicePropertiesJsonSerializer());
    ZooKeeperEphemeralStore<UriProperties> zkUriRegistry =  createEphemeralStore(
            zkConnection, ZKFSUtil.uriPath(_baseZKPath), new UriPropertiesJsonSerializer(), new UriPropertiesMerger());

    FileStore<ClusterProperties> fsClusterStore = createFileStore("clusters", new ClusterPropertiesJsonSerializer());
    FileStore<ServiceProperties> fsServiceStore = createFileStore(_d2ServicePath, new ServicePropertiesJsonSerializer());
    FileStore<UriProperties> fsUriStore = createFileStore("uris", new UriPropertiesJsonSerializer());

    PropertyEventBus<ClusterProperties> clusterBus = new PropertyEventBusImpl<ClusterProperties>(executorService);
    PropertyEventBus<ServiceProperties> serviceBus = new PropertyEventBusImpl<ServiceProperties>(executorService);
    PropertyEventBus<UriProperties> uriBus = new PropertyEventBusImpl<UriProperties>(executorService);
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  @Override
  public LoadBalancerStateItem<UriProperties> getUriProperties(String clusterName)
  {
    //this is used to get partitionId -> host uris
    UriProperties uriProperties = new UriProperties(_cluster, _partitionDescriptions);
    return new LoadBalancerStateItem<UriProperties>(uriProperties, 1, 1);
  }
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      Map<URI, Map<Integer, PartitionData>> uriData = new HashMap<URI, Map<Integer, PartitionData>>(3);
      uriData.put(uri1, partitionData);
      uriData.put(uri2, partitionData);
      uriData.put(uri3, partitionData);
      return (getUriProperties)
          ? new LoadBalancerStateItem<UriProperties>(new UriProperties("cluster-1", uriData),
                                                     0,
                                                     0) : null;
    }
    catch (Exception e)
    {
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