Examples with ServiceProperties com.linkedin.d2.balancer.properties.ServiceProperties used on opensource projects

Example 46 with ServiceProperties

use of com.linkedin.d2.balancer.properties.ServiceProperties in project rest.li by linkedin.

the class SimpleLoadBalancerStateTest method testRefreshWithConcurrentGetTC.

// This test is to verify a fix for a specific bug, where the d2 client receives a zookeeper
// update and concurrent getTrackerClient requests. In that case, all but the first concurrent
// requests got a null tracker client because the degraderLoadBalancerState was not fully initialized
// (hashring was empty), and this continued until the first request had atomically swamped a
// fully initialized state for other requests to use. This test failed on pre-fix code, it now
// succeeds.
@Test(groups = { "small", "back-end" })
public void testRefreshWithConcurrentGetTC() throws URISyntaxException, InterruptedException {
    reset();
    LinkedList<String> strategyList = new LinkedList<String>();
    URI uri = URI.create("http://cluster-1/test");
    final List<String> schemes = new ArrayList<String>();
    schemes.add("http");
    strategyList.add("degraderV3");
    // set up state
    _state.listenToService("service-1", new NullStateListenerCallback());
    _state.listenToCluster("cluster-1", new NullStateListenerCallback());
    assertNull(_state.getStrategy("service-1", "http"));
    // Use the _clusterRegistry.put to populate the _state.clusterProperties, used by
    // _state.refreshServiceStrategies
    _clusterRegistry.put("cluster-1", new ClusterProperties("cluster-1"));
    _serviceRegistry.put("service-1", new ServiceProperties("service-1", "cluster-1", "/test", strategyList, Collections.<String, Object>emptyMap(), Collections.<String, Object>emptyMap(), Collections.<String, String>emptyMap(), schemes, Collections.<URI>emptySet()));
    LoadBalancerStrategy strategy = _state.getStrategy("service-1", "http");
    assertNotNull(strategy, "got null strategy in setup");
    // test serial to make sure things are working before concurrent test
    TransportClient resultTC = _state.getClient("service-1", "http");
    assertNotNull(resultTC, "got null tracker client in non-concurrent env");
    ExecutorService myExecutor = Executors.newCachedThreadPool();
    ArrayList<TcCallable> cArray = new ArrayList<TcCallable>();
    List<TrackerClient> clients = new ArrayList<TrackerClient>();
    Map<Integer, PartitionData> partitionDataMap = new HashMap<Integer, PartitionData>(2);
    partitionDataMap.put(DefaultPartitionAccessor.DEFAULT_PARTITION_ID, new PartitionData(1d));
    clients.add(new TrackerClient(uri, partitionDataMap, new DegraderLoadBalancerTest.TestLoadBalancerClient(uri), SystemClock.instance(), null));
    for (int i = 0; i < 20; i++) {
        cArray.add(i, new TcCallable(clients, _state));
    }
    Runnable refreshTask = new Runnable() {

        @Override
        public void run() {
            while (true) {
                List<String> myStrategyList = new LinkedList<String>();
                myStrategyList.add("degraderV3");
                _state.refreshServiceStrategies(new ServiceProperties("service-1", "cluster-1", "/test", myStrategyList, Collections.<String, Object>emptyMap(), Collections.<String, Object>emptyMap(), Collections.<String, String>emptyMap(), schemes, Collections.<URI>emptySet()));
                if (Thread.interrupted()) {
                    return;
                }
            }
        }
    };
    myExecutor.execute(refreshTask);
    Integer badResults = 0;
    ArrayList<Future<Integer>> myList = new ArrayList<Future<Integer>>();
    for (int i = 0; i < cArray.size(); i++) {
        @SuppressWarnings("unchecked") Callable<Integer> c = (Callable) cArray.get(i);
        myList.add(i, myExecutor.submit(c));
    }
    try {
        for (int i = 0; i < cArray.size(); i++) {
            badResults += myList.get(i).get();
        }
    } catch (ExecutionException e) {
        Assert.assertFalse(true, "got ExecutionException");
    } finally {
        try {
            // call shutdownNow() to send an interrupt to the refreshTask
            myExecutor.shutdownNow();
            boolean status = myExecutor.awaitTermination(5, TimeUnit.SECONDS);
            if (status == false) {
                Assert.assertFalse(true, "failed to shutdown threads correctly");
            }
        } catch (InterruptedException ie) {
            // this thread was interrupted
            myExecutor.shutdownNow();
        }
    }
    Assert.assertTrue(badResults == 0, "getTrackerClients returned null");
}

Example 47 with ServiceProperties

use of com.linkedin.d2.balancer.properties.ServiceProperties in project rest.li by linkedin.

the class LoadBalancerClientCli method hasService.

public static boolean hasService(ZKConnection zkclient, String zkserver, String d2path, String cluster, String service) throws URISyntaxException, IOException, PropertyStoreException {
    ZooKeeperPermanentStore<ServiceProperties> zkServiceRegistry = null;
    String scstoreString = zkserver + ZKFSUtil.servicePath(d2path);
    zkServiceRegistry = (ZooKeeperPermanentStore<ServiceProperties>) getStore(zkclient, scstoreString, new ServicePropertiesJsonSerializer());
    return zkServiceRegistry.get(service).getClusterName().equals(cluster);
}

Example 48 with ServiceProperties

use of com.linkedin.d2.balancer.properties.ServiceProperties in project rest.li by linkedin.

the class LoadBalancerClientCli method shutdown.

public void shutdown() throws Exception {
    if (_zkClusterRegistry != null) {
        try {
            shutdownZKRegistry(_zkClusterRegistry);
        } catch (Exception e) {
            _log.error("Failed to shutdown ZooKeeperPermanentStore<ClusterProperties> zkClusterRegistry.");
        }
    }
    if (_zkServiceRegistry != null) {
        try {
            shutdownZKRegistry(_zkServiceRegistry);
        } catch (Exception e) {
            _log.error("Failed to shutdown ZooKeeperPermanentStore<ServiceProperties> zkServiceRegistry.");
        }
    }
    if (_zkUriRegistry != null) {
        try {
            shutdownZKRegistry(_zkUriRegistry);
        } catch (Exception e) {
            _log.error("Failed to shutdown ZooKeeperEphemeralStore<UriProperties> zkUriRegistry.");
        }
    }
    try {
        if (_client != null) {
            LoadBalancerUtil.syncShutdownClient(_client, _log);
        }
    } catch (Exception e) {
        _log.error("Failed to shutdown dynamic client.");
    }
    if (_zkfsLoadBalancer != null) {
        try {
            final CountDownLatch latch = new CountDownLatch(1);
            _zkfsLoadBalancer.shutdown(new PropertyEventShutdownCallback() {

                @Override
                public void done() {
                    latch.countDown();
                }
            });
            if (!latch.await(5, TimeUnit.SECONDS)) {
                _log.error("unable to shut down store");
            }
        } catch (Exception e) {
            _log.error("Failed to shutdown zkfsLoadBalancer.");
        }
    }
    try {
        deleteTempDir();
    } catch (Exception e) {
        _log.error("Failed to delete directory " + _tmpDir);
    }
    try {
        _zkclient.shutdown();
    } catch (Exception e) {
        _log.error("Failed to shutdown zk client.");
    }
}

Example 49 with ServiceProperties

use of com.linkedin.d2.balancer.properties.ServiceProperties 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<ServiceProperties>(executor, zkServiceRegistry);
    PropertyEventBus<UriProperties> uriBus = new PropertyEventBusImpl<UriProperties>(executor, zkUriRegistry);
    PropertyEventBus<ClusterProperties> clusterBus = new PropertyEventBusImpl<ClusterProperties>(executor, zkClusterRegistry);
    Map<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>> loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
    loadBalancerStrategyFactories.put("random", new RandomLoadBalancerStrategyFactory());
    loadBalancerStrategyFactories.put("degrader", new DegraderLoadBalancerStrategyFactoryV2());
    loadBalancerStrategyFactories.put("degraderV2", new DegraderLoadBalancerStrategyFactoryV2());
    loadBalancerStrategyFactories.put("degraderV3", new DegraderLoadBalancerStrategyFactoryV3());
    loadBalancerStrategyFactories.put("degraderV2_1", new DegraderLoadBalancerStrategyFactoryV2_1());
    Map<String, TransportClientFactory> clientFactories = new HashMap<String, TransportClientFactory>();
    clientFactories.put("http", new HttpClientFactory());
    // create the state
    SimpleLoadBalancerState state = new SimpleLoadBalancerState(executor, uriBus, clusterBus, serviceBus, clientFactories, loadBalancerStrategyFactories, null, null, false);
    SimpleLoadBalancer balancer = new SimpleLoadBalancer(state, 5, TimeUnit.SECONDS);
    FutureCallback<None> callback = new FutureCallback<None>();
    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 50 with ServiceProperties

use of com.linkedin.d2.balancer.properties.ServiceProperties in project rest.li by linkedin.

the class SimpleLoadBalancer method getPotentialClients.

private List<TrackerClient> getPotentialClients(String serviceName, ServiceProperties serviceProperties, Set<URI> possibleUris) {
    List<TrackerClient> clientsToLoadBalance = new ArrayList<TrackerClient>();
    if (possibleUris != null) {
        for (URI possibleUri : possibleUris) {
            // don't pay attention to this uri if it's banned
            if (!serviceProperties.isBanned(possibleUri)) {
                TrackerClient possibleTrackerClient = _state.getClient(serviceName, possibleUri);
                if (possibleTrackerClient != null) {
                    clientsToLoadBalance.add(possibleTrackerClient);
                }
            } else {
                warn(_log, "skipping banned uri: ", possibleUri);
            }
        }
    }
    debug(_log, "got clients to load balancer for ", serviceName, ": ", clientsToLoadBalance);
    return clientsToLoadBalance;
}