Examples of com.linkedin.d2.discovery.stores.zk.ZKConnection

Package com.linkedin.d2.discovery.stores.zk

Examples of com.linkedin.d2.discovery.stores.zk.ZKConnection

com.linkedin.d2.balancer.properties.ServiceProperties
Very very lightweight holder for a ZK connection which allows monitoring of the connection state. It uses the default watcher for connection state monitoring. Do NOT set a different default watcher on this connection. Use of the async methods that set a watch to be delivered to the default watcher is discouraged, as such watches will be ignored when triggered. @author Steven Ihde @version $Revision: $


  @Override
  public TrackerClient getClient(String clusterName, URI uri)
  {
    Map<Integer, PartitionData> partitionDataMap = new HashMap<Integer, PartitionData>(2);
    partitionDataMap.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1));
    return (getClient) ? new TrackerClient(uri, partitionDataMap, new TestClient()) : null;
  }

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      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<Integer, PartitionData>(1);
      partitionData.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
      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)

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    Map<Integer, Double> rawObject =
        JacksonUtil.getObjectMapper().readValue(partitionDataJson, HashMap.class);
    Map<Integer, PartitionData> partitionDataMap = new HashMap<Integer, PartitionData>();
    for (Map.Entry<Integer, Double> entry : rawObject.entrySet())
    {
      PartitionData data = new PartitionData(entry.getValue());
      partitionDataMap.put(entry.getKey(), data);
    }
    _announcer.setPartitionData(partitionDataMap);
  }

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  }


  @Override
  public LoadBalancerStateItem<ServiceProperties> getServiceProperties(String serviceName)
  {
    ServiceProperties serviceProperties = new ServiceProperties(_service, _cluster, _path, _strategyName);
    return new LoadBalancerStateItem<ServiceProperties>(serviceProperties, 1, 1);
  }

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    List<String> prioritizedSchemes = new ArrayList<String>();


    prioritizedSchemes.add("http");


    return (getServiceProperties)
        ? new LoadBalancerStateItem<ServiceProperties>(new ServiceProperties("service-1",
                                                                             "cluster-1",
                                                                             "/foo",
                                                                             "rr",
                                                                             Collections.<String>emptyList(),
                                                                             Collections.<String, Object>emptyMap(),

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    assertTrue(_state.isListeningToService("service-1"));
    assertNotNull(_state.getServiceProperties("service-1"));
    assertNull(_state.getServiceProperties("service-1").getProperty());


    ServiceProperties property =
        new ServiceProperties("service-1", "cluster-1", "/test", "random");


    _serviceRegistry.put("service-1", property);


    assertTrue(_state.isListeningToService("service-1"));
    assertNotNull(_state.getServiceProperties("service-1"));

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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));

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    // set up state
    _state.listenToService("service-1", new NullStateListenerCallback());


    assertNull(_state.getStrategy("service-1", "http"));


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

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    _state.listenToService("service-1", new NullStateListenerCallback());
    _state.listenToCluster("cluster-1", new NullStateListenerCallback());


    assertNull(_state.getStrategy("service-1", "http"));


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


    assertNotNull(_state.getStrategy("service-1", "http"));


    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");


    assertNotNull(strategy);
    assertTrue(strategy instanceof RandomLoadBalancerStrategy);


    // check that we're getting the exact same strategy (by pointer) every time
    assertTrue(strategy == _state.getStrategy("service-1", "http"));
    assertTrue(strategy == _state.getStrategy("service-1", "http"));


    // now make sure adding a cluster property won't change the strategy
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));


    // we should still have the same strategy now
    LoadBalancerStrategy newStrategy = _state.getStrategy("service-1", "http");
    assertNotNull(newStrategy);
    assertTrue(strategy == newStrategy);
    assertTrue(newStrategy instanceof RandomLoadBalancerStrategy);


    strategy = newStrategy;


    // refresh by adding service
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                                "cluster-1",
                                                                "/test",
                                                                "random",
                                                                Collections.<String>emptyList(),
                                                                Collections.<String,Object>emptyMap(),

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    assertNull(_state.getStrategy("service-1", "http"));


    // Put degrader into the strategyList, it it not one of the supported strategies in
    // this strategyFactory, so we should not get a strategy back for http.
    strategyList.add("degrader");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),
                                                            null,
                                                            null,
                                                            schemes,
                                                            null));
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
    assertNull(_state.getStrategy("service-1", "http"));


    // put the random strategy into the Strategy list, it is one of the supported strategies in the
    // strategyFactory for this unit test
    strategyList.clear();
    strategyList.add("random");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),
                                                            null,
                                                            null,
                                                            schemes,
                                                            null));


    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));


    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");


    assertNotNull(strategy);
    assertTrue(strategy instanceof RandomLoadBalancerStrategy);


    // now add the degraderV3 strategy into the Strategy list
    strategyList.addFirst("degraderV3");
    _serviceRegistry.put("service-1", new ServiceProperties("service-1",
                                                            "cluster-1",
                                                            "/test",
                                                            "unusedInThisConstructor",
                                                            strategyList,
                                                            Collections.<String, Object>emptyMap(),

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