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.
assertNull(_state.getClient("service-1", uri));
//we shouldn't be affected by any update to cluster-1 uris because now service-1 listen to cluster-2
_uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
assertNull(_state.getClient("service-1", uri));
//now let's create URI for cluster 2 and make the state listen to cluster_2
_state.listenToCluster("cluster-2", new NullStateListenerCallback());
URI uri2 = URI.create("http://cluster-2/test");
Map<Integer, PartitionData> partitionData2 = new HashMap<Integer, PartitionData>(1);
partitionData2.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
Map<URI, Map<Integer, PartitionData>> uriData2 = new HashMap<URI, Map<Integer, PartitionData>>();
uriData2.put(uri2, partitionData2);
//if we start publishing new event to cluster-2 then we should get trackerClient
_uriRegistry.put("cluster-2", new UriProperties("cluster-2", uriData2));
client = _state.getClient("service-1", uri2);
assertNotNull(client);
assertEquals(client.getUri(), uri2);
//just to make sure that any event from cluster-1 doesn't affect us anymore
_uriRegistry.put("cluster-1", new UriProperties("cluster-1", uriData));
client = _state.getClient("service-1", uri2);
assertNotNull(client);
assertEquals(client.getUri(), uri2);