Examples with RandomLoadBalancerStrategyFactory com.linkedin.d2.balancer.strategies.random.RandomLoadBalancerStrategyFactory used on opensource projects

Example 11 with RandomLoadBalancerStrategyFactory

use of com.linkedin.d2.balancer.strategies.random.RandomLoadBalancerStrategyFactory in project rest.li by linkedin.

the class RandomLoadBalancerTest method testRoundRobinBalancer.

@Test(groups = { "small", "back-end" })
public void testRoundRobinBalancer() {
    RandomLoadBalancerStrategyFactory lbFactory = new RandomLoadBalancerStrategyFactory();
    RandomLoadBalancerStrategy rrLoadBalancer = lbFactory.newLoadBalancer(null);
    Map<Integer, PartitionData> partitionDataMap = new HashMap<>(2);
    partitionDataMap.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
    TrackerClient trackerClient1 = Mockito.mock(TrackerClient.class);
    TrackerClient trackerClient2 = Mockito.mock(TrackerClient.class);
    Map<URI, TrackerClient> trackerClients = new HashMap<>();
    URI uri1 = URI.create("http://cluster-1/test");
    URI uri2 = URI.create("http://cluster-2/test");
    trackerClients.put(uri1, trackerClient1);
    trackerClients.put(uri2, trackerClient2);
    // test balancer with two clients, both available
    for (int i = 0; i < 100; ++i) {
        assertNotNull(rrLoadBalancer.getTrackerClient(null, new RequestContext(), 0, DefaultPartitionAccessor.DEFAULT_PARTITION_ID, trackerClients));
    }
}

Example 12 with RandomLoadBalancerStrategyFactory

use of com.linkedin.d2.balancer.strategies.random.RandomLoadBalancerStrategyFactory in project rest.li by linkedin.

the class LoadBalancerClientCli method getLoadBalancer.

public static SimpleLoadBalancer getLoadBalancer(ZKConnection zkclient, String zkserver, String d2path, String service) throws IOException, IllegalStateException, URISyntaxException, PropertyStoreException, ExecutionException, TimeoutException, InterruptedException {
    // zk stores
    String clstoreString = zkserver + ZKFSUtil.clusterPath(d2path);
    String scstoreString = zkserver + ZKFSUtil.servicePath(d2path);
    String uristoreString = zkserver + ZKFSUtil.uriPath(d2path);
    ZooKeeperPermanentStore<ClusterProperties> zkClusterRegistry = (ZooKeeperPermanentStore<ClusterProperties>) getStore(zkclient, clstoreString, new ClusterPropertiesJsonSerializer());
    ZooKeeperPermanentStore<ServiceProperties> zkServiceRegistry = (ZooKeeperPermanentStore<ServiceProperties>) getStore(zkclient, scstoreString, new ServicePropertiesJsonSerializer());
    ZooKeeperEphemeralStore<UriProperties> zkUriRegistry = (ZooKeeperEphemeralStore<UriProperties>) getEphemeralStore(zkclient, uristoreString, new UriPropertiesJsonSerializer(), new UriPropertiesMerger());
    ScheduledThreadPoolExecutor executor = new ScheduledThreadPoolExecutor(1, new NamedThreadFactory("D2 PropertyEventExecutor"));
    PropertyEventBus<ServiceProperties> serviceBus = new PropertyEventBusImpl<>(executor, zkServiceRegistry);
    PropertyEventBus<UriProperties> uriBus = new PropertyEventBusImpl<>(executor, zkUriRegistry);
    PropertyEventBus<ClusterProperties> clusterBus = new PropertyEventBusImpl<>(executor, zkClusterRegistry);
    Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<>();
    loadBalancerStrategyFactories.put("random", new RandomLoadBalancerStrategyFactory());
    loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
    loadBalancerStrategyFactories.put("degraderV2", new DegraderLoadBalancerStrategyFactoryV3());
    loadBalancerStrategyFactories.put("degraderV3", new DegraderLoadBalancerStrategyFactoryV3());
    loadBalancerStrategyFactories.put("degraderV2_1", new DegraderLoadBalancerStrategyFactoryV3());
    Map<String, TransportClientFactory> clientFactories = new HashMap<>();
    clientFactories.put("http", new HttpClientFactory.Builder().build());
    // create the state
    SimpleLoadBalancerState state = new SimpleLoadBalancerState(executor, uriBus, clusterBus, serviceBus, clientFactories, loadBalancerStrategyFactories, null, null, false);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS, executor);
    FutureCallback<None> callback = new FutureCallback<>();
    balancer.start(callback);
    callback.get(5, TimeUnit.SECONDS);
    new JmxManager().registerLoadBalancer("balancer", balancer).registerLoadBalancerState("state", state).registerScheduledThreadPoolExecutor("executorService", executor).registerZooKeeperPermanentStore("zkClusterRegistry", zkClusterRegistry).registerZooKeeperPermanentStore("zkServiceRegistry", zkServiceRegistry).registerZooKeeperEphemeralStore("zkUriRegistry", zkUriRegistry);
    return balancer;
}

Example 13 with RandomLoadBalancerStrategyFactory

use of com.linkedin.d2.balancer.strategies.random.RandomLoadBalancerStrategyFactory in project rest.li by linkedin.

the class SimpleLoadBalancerStrawMan method main.

public static void main(String[] args) throws URISyntaxException, ServiceUnavailableException {
    // define the load balancing strategies that we support (round robin, etc)
    Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<>();
    loadBalancerStrategyFactories.put("rr", new RandomLoadBalancerStrategyFactory());
    loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV3());
    // define the clients that we support (http, etc)
    Map<String, TransportClientFactory> clientFactories = new HashMap<>();
    clientFactories.put("http", new HttpClientFactory.Builder().build());
    // listen for service updates (could be a glu discovery client, zk discovery client,
    // config discovery client, etc)
    ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
    MockStore<ServiceProperties> serviceRegistry = new MockStore<>();
    MockStore<ClusterProperties> clusterRegistry = new MockStore<>();
    MockStore<UriProperties> uriRegistry = new MockStore<>();
    SimpleLoadBalancerState state = new SimpleLoadBalancerState(executorService, uriRegistry, clusterRegistry, serviceRegistry, clientFactories, loadBalancerStrategyFactories);
    // create the load balancer
    SimpleLoadBalancer loadBalancer = new SimpleLoadBalancer(state, executorService);
    final TransportClient tc = loadBalancer.getClient(new URIRequest("d2://browsemaps/52"), new RequestContext());
    final Client c = new TransportClientAdapter(tc, true);
    c.restRequest(null);
}