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

Example 41 with ServiceProperties

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

the class SimpleLoadBalancerTest method testLoadBalancerSimulationDegraderWithFileStore.

@Test(groups = { "medium", "back-end" })
public void testLoadBalancerSimulationDegraderWithFileStore() throws URISyntaxException, IOException, ServiceUnavailableException, InterruptedException {
    SimpleLoadBalancerSimulation simulator = new SimpleLoadBalancerSimulation(new DegraderLoadBalancerStrategyFactoryV3(), new FileStoreTestFactory<ClusterProperties>("cluster", new ClusterPropertiesJsonSerializer()), new FileStoreTestFactory<ServiceProperties>("service", new ServicePropertiesJsonSerializer()), new FileStoreTestFactory<UriProperties>("uri", new UriPropertiesJsonSerializer()));
    simulator.simulateMultithreaded(1, 1000, 20);
    simulator.reset();
    simulator.simulateMultithreaded(50, 10000, 20);
    simulator.reset();
}

Example 42 with ServiceProperties

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

the class SimpleLoadBalancerTest method testLoadBalancerSimulationDegraderWithFileStoreLarge.

@Test(enabled = false, groups = { "large", "back-end" })
public void testLoadBalancerSimulationDegraderWithFileStoreLarge() throws URISyntaxException, IOException, ServiceUnavailableException, InterruptedException {
    SimpleLoadBalancerSimulation simulator = new SimpleLoadBalancerSimulation(new DegraderLoadBalancerStrategyFactoryV3(), new FileStoreTestFactory<ClusterProperties>("cluster", new ClusterPropertiesJsonSerializer()), new FileStoreTestFactory<ServiceProperties>("service", new ServicePropertiesJsonSerializer()), new FileStoreTestFactory<UriProperties>("uri", new UriPropertiesJsonSerializer()));
    simulator.simulateMultithreaded(1, 1000, 20);
    simulator.reset();
    simulator.simulateMultithreaded(1, 10000, 20);
    simulator.reset();
    simulator.simulateMultithreaded(8, 10000, 750);
    simulator.reset();
    simulator.simulateMultithreaded(50, 10000, 100);
    simulator.reset();
    simulator.simulateMultithreaded(50, 10000, 100);
    simulator.reset();
}

Example 43 with ServiceProperties

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

the class SimpleLoadBalancerSimulation method reset.

/**
   * Reset the entire state of the simulation.
   *
   */
public void reset() {
    // simulation state
    _random = new Random();
    _possibleServices = Collections.synchronizedList(new ArrayList<String>());
    _possibleClusters = Collections.synchronizedList(new ArrayList<String>());
    _possiblePaths = Collections.synchronizedList(new ArrayList<String>());
    _possibleSchemes = Collections.synchronizedList(new ArrayList<String>());
    _possibleStrategies = Collections.synchronizedList(new ArrayList<String>());
    _possibleUris = Collections.synchronizedList(new ArrayList<URI>());
    // load balancer state
    _executorService = Executors.newSingleThreadScheduledExecutor();
    ;
    // pretend that these are zk stores
    _serviceRegistry = new MockStore<ServiceProperties>();
    _uriRegistry = new MockStore<UriProperties>();
    _clusterRegistry = new MockStore<ClusterProperties>();
    _loadBalancerStrategyFactories = new HashMap<String, LoadBalancerStrategyFactory<? extends LoadBalancerStrategy>>();
    _clientFactories = new HashMap<String, TransportClientFactory>();
    _state = new SimpleLoadBalancerState(_executorService, _uriRegistry, _clusterRegistry, _serviceRegistry, _clientFactories, _loadBalancerStrategyFactories);
    _loadBalancer = new SimpleLoadBalancer(_state, 10, TimeUnit.SECONDS);
    FutureCallback<None> callback = new FutureCallback<None>();
    _loadBalancer.start(callback);
    try {
        callback.get();
    } catch (Exception e) {
        throw new RuntimeException("Balancer start failed", e);
    }
    // verification state
    _expectedServiceProperties = new ConcurrentHashMap<String, ServiceProperties>();
    _expectedClusterProperties = new ConcurrentHashMap<String, ClusterProperties>();
    _expectedUriProperties = new ConcurrentHashMap<String, UriProperties>();
    _totalMessages = 0;
    // TODO parameterize this
    for (int i = 0; i < 10; ++i) {
        _possibleServices.add("service-" + i);
        _possibleClusters.add("cluster-" + i);
        _possiblePaths.add("/some/path/" + i);
        _possibleSchemes.add("scheme" + i % 3);
        _possibleStrategies.add("strategy-" + i);
        _clientFactories.put("scheme" + i % 2, new DoNothingClientFactory());
        _loadBalancerStrategyFactories.put("strategy-" + i, _loadBalancerStrategyFactoryToTest);
    }
    for (int i = 0; i < 1000; ++i) {
        _possibleUris.add(URI.create(random(_possibleSchemes) + "://host" + i % 100 + ":" + (1000 + _random.nextInt(1000)) + random(_possiblePaths)));
    }
    // add bad stuff
    // add a bad scheme to prioritized schemes
    _possibleSchemes.add("BAD_PRIORITIZED_SCHEME");
    // add a bad scheme to possible uris
    _possibleUris.add(URI.create("BADSCHEME://host1001:" + (1000 + _random.nextInt(1000)) + random(_possiblePaths)));
    // register jmx goodies
    new JmxManager().registerLoadBalancer("SimpleLoadBalancer", _loadBalancer).registerLoadBalancerState("SimpleLoadBalancerState", _state);
}

Example 44 with ServiceProperties

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

the class SimpleLoadBalancerSimulation method verifyState.

/**
   * Compare the simulator's view of reality with the load balancer's. This method should
   * be called after every step is performed and all threads have finished.
   */
public void verifyState() {
    // verify that we consumed all messages before we do anything
    for (int i = 0; i < _queues.length; ++i) {
        if (_queues[i].size() > 0) {
            fail("there were messages left in the queue. all messages should have been consumed during this simulation step.");
        }
    }
    // verify that all clients have been shut down
    for (Map.Entry<String, TransportClientFactory> e : _clientFactories.entrySet()) {
        DoNothingClientFactory factory = (DoNothingClientFactory) e.getValue();
        if (factory.getRunningClientCount() != 0) {
            fail("Not all clients were shut down from factory " + e.getKey());
        }
    }
    try {
        final CountDownLatch latch = new CountDownLatch(1);
        PropertyEventShutdownCallback callback = new PropertyEventShutdownCallback() {

            @Override
            public void done() {
                latch.countDown();
            }
        };
        _state.shutdown(callback);
        if (!latch.await(60, TimeUnit.SECONDS)) {
            fail("unable to shutdown state");
        }
    } catch (InterruptedException e) {
        fail("unable to shutdown state in verifyState.");
    }
    // New load balancer with no timeout; the code below checks for services that don't
    // exist,
    // and a load balancer with non-zero timeout will just timeout waiting for them to be
    // registered, which will never happen because the PropertyEventThread is shut down.
    _loadBalancer = new SimpleLoadBalancer(_state, 0, TimeUnit.SECONDS);
    // verify services are as we expect
    for (String possibleService : _possibleServices) {
        // about it
        if (!_expectedServiceProperties.containsKey(possibleService) || !_state.isListeningToService(possibleService)) {
            LoadBalancerStateItem<ServiceProperties> serviceItem = _state.getServiceProperties(possibleService);
            assertTrue(serviceItem == null || serviceItem.getProperty() == null);
        } else {
            ServiceProperties serviceProperties = _expectedServiceProperties.get(possibleService);
            ClusterProperties clusterProperties = _expectedClusterProperties.get(serviceProperties.getClusterName());
            UriProperties uriProperties = _expectedUriProperties.get(serviceProperties.getClusterName());
            assertEquals(_state.getServiceProperties(possibleService).getProperty(), serviceProperties);
            // verify round robin'ing of the hosts for this service
            for (int i = 0; i < 100; ++i) {
                try {
                    // this call will queue up messages if we're not listening to the service, but
                    // it's ok, because all of the messengers have been stopped.
                    final TransportClient client = _loadBalancer.getClient(new URIRequest("d2://" + possibleService + random(_possiblePaths)), new RequestContext());
                    // if we didn't receive service unavailable, we should
                    // get a client back
                    assertNotNull(client);
                } catch (ServiceUnavailableException e) {
                    if (uriProperties != null && clusterProperties != null) {
                        // only way to get here is if the prioritized
                        // schemes could find no available uris in the
                        // cluster. let's see if we can find a URI that
                        // matches a prioritized scheme in the cluster.
                        Set<String> schemes = new HashSet<String>();
                        for (URI uri : uriProperties.Uris()) {
                            schemes.add(uri.getScheme());
                        }
                        for (String scheme : clusterProperties.getPrioritizedSchemes()) {
                            // the code.
                            if (schemes.contains(scheme) && _clientFactories.containsKey(scheme)) {
                                break;
                            }
                            assertFalse(schemes.contains(scheme) && _clientFactories.containsKey(scheme), "why couldn't a client be found for schemes " + clusterProperties.getPrioritizedSchemes() + " with URIs: " + uriProperties.Uris());
                        }
                    }
                }
            }
        }
    }
    // verify clusters are as we expect
    for (String possibleCluster : _possibleClusters) {
        LoadBalancerStateItem<ClusterProperties> clusterItem = _state.getClusterProperties(possibleCluster);
        if (!_expectedClusterProperties.containsKey(possibleCluster) || !_state.isListeningToCluster(possibleCluster)) {
            assertTrue(clusterItem == null || clusterItem.getProperty() == null, "cluster item for " + possibleCluster + " is not null: " + clusterItem);
        } else {
            assertNotNull(clusterItem, "Item for cluster " + possibleCluster + " should not be null, listening: " + _state.isListeningToCluster(possibleCluster) + ", keys: " + _expectedClusterProperties.keySet());
            assertEquals(clusterItem.getProperty(), _expectedClusterProperties.get(possibleCluster));
        }
    }
    // verify uris are as we expect
    for (String possibleCluster : _possibleClusters) {
        LoadBalancerStateItem<UriProperties> uriItem = _state.getUriProperties(possibleCluster);
        if (!_expectedUriProperties.containsKey(possibleCluster) || !_state.isListeningToCluster(possibleCluster)) {
            assertTrue(uriItem == null || uriItem.getProperty() == null);
        } else {
            assertNotNull(uriItem);
            assertEquals(uriItem.getProperty(), _expectedUriProperties.get(possibleCluster));
        }
    }
}

Example 45 with ServiceProperties

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

the class SimpleLoadBalancerStateTest method testListenToService.

@Test(groups = { "small", "back-end" })
public void testListenToService() throws InterruptedException {
    reset();
    assertFalse(_state.isListeningToService("service-1"));
    assertNull(_state.getServiceProperties("service-1"));
    final CountDownLatch latch = new CountDownLatch(1);
    LoadBalancerStateListenerCallback callback = new LoadBalancerStateListenerCallback() {

        @Override
        public void done(int type, String name) {
            latch.countDown();
        }
    };
    _state.listenToService("service-1", callback);
    if (!latch.await(5, TimeUnit.SECONDS)) {
        fail("didn't get callback when listenToService was called");
    }
    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", Arrays.asList("random"));
    _serviceRegistry.put("service-1", property);
    assertTrue(_state.isListeningToService("service-1"));
    assertNotNull(_state.getServiceProperties("service-1"));
    assertEquals(_state.getServiceProperties("service-1").getProperty(), property);
}