Examples with ServerStats com.netflix.loadbalancer.ServerStats used on opensource projects

Example 6 with ServerStats

use of com.netflix.loadbalancer.ServerStats in project ribbon by Netflix.

the class NettyClientTest method testObservableWithMultipleServers.

@Test
public void testObservableWithMultipleServers() throws Exception {
    IClientConfig config = DefaultClientConfigImpl.getClientConfigWithDefaultValues().withProperty(CommonClientConfigKey.ConnectTimeout, "1000");
    HttpClientRequest<ByteBuf> request = HttpClientRequest.createGet("/testAsync/person");
    Server badServer = new Server("localhost:12345");
    Server goodServer = new Server("localhost:" + port);
    List<Server> servers = Lists.newArrayList(badServer, badServer, badServer, goodServer);
    BaseLoadBalancer lb = LoadBalancerBuilder.<Server>newBuilder().withRule(new AvailabilityFilteringRule()).withPing(new DummyPing()).buildFixedServerListLoadBalancer(servers);
    LoadBalancingHttpClient<ByteBuf, ByteBuf> lbObservables = RibbonTransport.newHttpClient(lb, config, new NettyHttpLoadBalancerErrorHandler(1, 3, true));
    Person person = getPersonObservable(lbObservables.submit(request)).toBlocking().single();
    assertEquals(EmbeddedResources.defaultPerson, person);
    ServerStats stats = lbObservables.getServerStats(badServer);
    // two requests to bad server because retry same server is set to 1
    assertEquals(4, stats.getTotalRequestsCount());
    assertEquals(0, stats.getActiveRequestsCount());
    assertEquals(4, stats.getSuccessiveConnectionFailureCount());
    stats = lbObservables.getServerStats(goodServer);
    assertEquals(1, stats.getTotalRequestsCount());
    assertEquals(0, stats.getActiveRequestsCount());
    assertEquals(0, stats.getSuccessiveConnectionFailureCount());
    person = getPersonObservable(lbObservables.submit(request)).toBlocking().single();
    assertEquals(EmbeddedResources.defaultPerson, person);
    HttpClientListener listener = lbObservables.getListener();
    assertEquals(1, listener.getPoolReuse());
}

Example 7 with ServerStats

use of com.netflix.loadbalancer.ServerStats in project ribbon by Netflix.

the class NettyClientTest method testLoadBalancingWithTwoServers.

@Test
public void testLoadBalancingWithTwoServers() throws Exception {
    MockWebServer server = new MockWebServer();
    String content = "{\"name\": \"ribbon\", \"age\": 2}";
    server.enqueue(new MockResponse().setResponseCode(200).setHeader("Content-type", "application/json").setBody(content));
    server.play();
    IClientConfig config = DefaultClientConfigImpl.getClientConfigWithDefaultValues();
    HttpClientRequest<ByteBuf> request = HttpClientRequest.createPost("/testAsync/person").withContent(SerializationUtils.serializeToBytes(JacksonCodec.getInstance(), EmbeddedResources.defaultPerson, null)).withHeader("Content-type", "application/json");
    NettyHttpLoadBalancerErrorHandler errorHandler = new NettyHttpLoadBalancerErrorHandler(1, 3, true);
    BaseLoadBalancer lb = new BaseLoadBalancer(new DummyPing(), new AvailabilityFilteringRule());
    LoadBalancingHttpClient<ByteBuf, ByteBuf> lbObservables = RibbonTransport.newHttpClient(lb, config, errorHandler);
    HttpClientListener externalListener = HttpClientListener.newHttpListener("external");
    lbObservables.subscribe(externalListener);
    Server server1 = new Server("localhost:" + server.getPort());
    Server server2 = new Server("localhost:" + port);
    lb.setServersList(Lists.newArrayList(server1, server2));
    RetryHandler handler = new RequestSpecificRetryHandler(true, true, errorHandler, null) {

        @Override
        public boolean isRetriableException(Throwable e, boolean sameServer) {
            return true;
        }
    };
    Observable<Person> observableWithRetries = getPersonObservable(lbObservables.submit(request, handler, null));
    ObserverWithLatch<Person> observer = new ObserverWithLatch<Person>();
    observableWithRetries.subscribe(observer);
    observer.await();
    if (observer.error != null) {
        observer.error.printStackTrace();
    }
    assertEquals("ribbon", observer.obj.name);
    assertEquals(EmbeddedResources.defaultPerson.age, observer.obj.age);
    observer = new ObserverWithLatch<Person>();
    observableWithRetries = getPersonObservable(lbObservables.submit(request, handler, null));
    observableWithRetries.subscribe(observer);
    observer.await();
    if (observer.error != null) {
        observer.error.printStackTrace();
    }
    assertEquals("ribbon", observer.obj.name);
    assertEquals(2, observer.obj.age);
    ServerStats stats = lbObservables.getServerStats(server1);
    server.shutdown();
    // assertEquals(1, stats.getTotalRequestsCount());
    assertEquals(0, stats.getActiveRequestsCount());
    stats = lbObservables.getServerStats(server2);
    // two requests to bad server because retry same server is set to 1
    assertEquals(1, stats.getTotalRequestsCount());
    assertEquals(0, stats.getActiveRequestsCount());
    assertEquals(0, stats.getSuccessiveConnectionFailureCount());
    final HttpClientListener listener = lbObservables.getListener();
    assertEquals(2, listener.getPoolAcquires());
    waitUntilTrueOrTimeout(1000, new Func0<Boolean>() {

        @Override
        public Boolean call() {
            return listener.getPoolReleases() == 2;
        }
    });
    assertEquals(2, listener.getConnectionCount());
    assertEquals(0, listener.getPoolReuse());
    assertEquals(2, externalListener.getPoolAcquires());
}

Example 8 with ServerStats

use of com.netflix.loadbalancer.ServerStats in project ribbon by Netflix.

the class NettyClientTest method testObservableWithMultipleServersFailed.

@Test
public void testObservableWithMultipleServersFailed() throws Exception {
    IClientConfig config = IClientConfig.Builder.newBuilder().withDefaultValues().withRetryOnAllOperations(true).withMaxAutoRetries(1).withMaxAutoRetriesNextServer(3).withConnectTimeout(100).build();
    HttpClientRequest<ByteBuf> request = HttpClientRequest.createGet("/testAsync/person");
    BaseLoadBalancer lb = new BaseLoadBalancer(new DummyPing(), new AvailabilityFilteringRule());
    LoadBalancingHttpClient<ByteBuf, ByteBuf> lbObservables = RibbonTransport.newHttpClient(lb, config);
    Server badServer = new Server("localhost:12345");
    Server badServer1 = new Server("localhost:12346");
    Server badServer2 = new Server("localhost:12347");
    List<Server> servers = Lists.newArrayList(badServer, badServer1, badServer2);
    lb.setServersList(servers);
    Observable<Person> observableWithRetries = getPersonObservable(lbObservables.submit(request));
    ObserverWithLatch<Person> observer = new ObserverWithLatch<Person>();
    observableWithRetries.subscribe(observer);
    observer.await();
    assertNull(observer.obj);
    observer.error.printStackTrace();
    assertTrue(observer.error instanceof ClientException);
    ServerStats stats = lbObservables.getServerStats(badServer);
    // two requests to bad server because retry same server is set to 1
    assertEquals(2, stats.getTotalRequestsCount());
    assertEquals(0, stats.getActiveRequestsCount());
    assertEquals(2, stats.getSuccessiveConnectionFailureCount());
}

Example 9 with ServerStats

use of com.netflix.loadbalancer.ServerStats in project java-chassis by ServiceComb.

the class SessionStickinessRule method isErrorThresholdMet.

private boolean isErrorThresholdMet() {
    AbstractLoadBalancer lb = (AbstractLoadBalancer) getLoadBalancer();
    LoadBalancerStats stats = lb.getLoadBalancerStats();
    if (stats != null && stats.getServerStats() != null && stats.getServerStats().size() > 0) {
        ServerStats serverStats = stats.getSingleServerStat(lastServer);
        int successiveFaildCount = serverStats.getSuccessiveConnectionFailureCount();
        if (Configuration.INSTANCE.getSuccessiveFailedTimes() > 0 && successiveFaildCount >= Configuration.INSTANCE.getSuccessiveFailedTimes()) {
            serverStats.clearSuccessiveConnectionFailureCount();
            return true;
        }
    }
    return false;
}

Example 10 with ServerStats

use of com.netflix.loadbalancer.ServerStats in project java-chassis by ServiceComb.

the class IsolationServerListFilter method allowVisit.

private boolean allowVisit(Server server) {
    updateSettings();
    ServerStats serverStats = stats.getSingleServerStat(server);
    long totalRequest = serverStats.getTotalRequestsCount();
    long failureRequest = serverStats.getSuccessiveConnectionFailureCount();
    if (totalRequest < enableRequestThreshold) {
        return true;
    }
    if ((failureRequest / (double) totalRequest) * PERCENT < errorThresholdPercentage) {
        return true;
    }
    if ((System.currentTimeMillis() - ((CseServer) server).getLastVisitTime()) > singleTestTime) {
        LOGGER.info("The Service {}'s instance {} has been break, will give a single test opportunity.", microserviceName, server);
        return true;
    }
    LOGGER.warn("The Service {}'s instance {} has been break!", microserviceName, server);
    return false;
}