io.reactivex.netty.protocol.http.client.HttpClient Java Examples

@Bean
HttpNewsService externalNews() {
    return () -> HttpClient.newClient(new InetSocketAddress(NEWS_SERVER_PORT))
                           .createGet("")
                           .flatMap(HttpClientResponse::getContent)
                           .flatMapIterable(bb -> {
                               try {
                                   return new ObjectMapper().readValue(
                                           bb.toString(Charset.defaultCharset()),
                                           new TypeReference<ArrayList<News>>() {}
                                   );
                               }
                               catch (IOException e) {
                                   throw new RuntimeException(e);
                               }
                           });
}
 

@Override
public HttpClient<ByteBuf, ByteBuf> newHttpClient(final IClientConfig config) {
    final List<ExecutionListener<HttpClientRequest<ByteBuf>, HttpClientResponse<ByteBuf>>> listeners = new ArrayList<>();
    listeners.add(createBearerHeaderAdder());
    final PipelineConfiguratorComposite<HttpClientResponse<ByteBuf>, HttpClientRequest<ByteBuf>> pipelineConfigurator = new PipelineConfiguratorComposite<HttpClientResponse<ByteBuf>,
            HttpClientRequest<ByteBuf>>(new HttpClientPipelineConfigurator<ByteBuf, ByteBuf>(),
                                        new HttpObjectAggregationConfigurator(maxChunkSize));
    final LoadBalancingHttpClient<ByteBuf, ByteBuf> client = LoadBalancingHttpClient.<ByteBuf, ByteBuf>builder()
            .withClientConfig(config)
            .withExecutorListeners(listeners)
            .withRetryHandler(getDefaultHttpRetryHandlerWithConfig(config))
            .withPipelineConfigurator(pipelineConfigurator)
            .withPoolCleanerScheduler(RibbonTransport.poolCleanerScheduler)
            .build();

    return client;
}
 

public HttpResourceObservableCommand(HttpClient<ByteBuf, ByteBuf> httpClient,
                                     HttpClientRequest<ByteBuf> httpRequest, String hystrixCacheKey,
                                     Map<String, Object> requestProperties,
                                     FallbackHandler<T> fallbackHandler,
                                     ResponseValidator<HttpClientResponse<ByteBuf>> validator,
                                     Class<? extends T> classType,
                                     HystrixObservableCommand.Setter setter) {
    super(setter);
    this.httpClient = httpClient;
    this.fallbackHandler = fallbackHandler;
    this.validator = validator;
    this.httpRequest = httpRequest;
    this.hystrixCacheKey = hystrixCacheKey;
    this.classType = classType;
    this.requestProperties = requestProperties;
}
 

@Test
public void testTransportFactoryWithInjection() {
    Injector injector = Guice.createInjector(
            new AbstractModule() {
                @Override
                protected void configure() {
                    bind(ClientConfigFactory.class).to(MyClientConfigFactory.class).in(Scopes.SINGLETON);
                    bind(RibbonTransportFactory.class).to(DefaultRibbonTransportFactory.class).in(Scopes.SINGLETON);
                }
            }
    );

    RibbonTransportFactory transportFactory = injector.getInstance(RibbonTransportFactory.class);
    HttpClient<ByteBuf, ByteBuf> client = transportFactory.newHttpClient("myClient");
    IClientConfig config = ((LoadBalancingHttpClient) client).getClientConfig();
    assertEquals("MyConfig", config.getNameSpace());
}
 

public static String getResponse(HttpClientRequest<ByteBuf> request, HttpClient<ByteBuf, ByteBuf> client) {
    return client.submit(request).flatMap(new Func1<HttpClientResponse<ByteBuf>, Observable<String>>() {
        @Override
        public Observable<String> call(HttpClientResponse<ByteBuf> response) {
            return response.getContent().map(new Func1<ByteBuf, String>() {
                @Override
                public String call(ByteBuf byteBuf) {
                    return byteBuf.toString(Charset.defaultCharset());
                }
            });
        }
    }).onErrorFlatMap(new Func1<OnErrorThrowable, Observable<String>>() {
        @Override
        public Observable<String> call(OnErrorThrowable onErrorThrowable) {
            throw onErrorThrowable;
        }
    }).toBlocking().first();
}
 

private Observable<HttpClientResponse<ByteBuf>> getResponse(String externalHealthCheckURL) {
    String host = "localhost";
    int port = DEFAULT_APPLICATION_PORT;
    String path = "/healthcheck";
    try {
        URL url = new URL(externalHealthCheckURL);
        host = url.getHost();
        port = url.getPort();
        path = url.getPath();
    } catch (MalformedURLException e) {
        //continue
    }
    Integer timeout = DynamicProperty.getInstance("prana.host.healthcheck.timeout").getInteger(DEFAULT_CONNECTION_TIMEOUT);
    HttpClient<ByteBuf, ByteBuf> httpClient = RxNetty.<ByteBuf, ByteBuf>newHttpClientBuilder(host, port)
            .pipelineConfigurator(PipelineConfigurators.<ByteBuf, ByteBuf>httpClientConfigurator())
            .channelOption(ChannelOption.CONNECT_TIMEOUT_MILLIS, timeout)
            .build();
    return httpClient.submit(HttpClientRequest.createGet(path));

}
 

@Override
public HttpClient<ByteBuf, ByteBuf> newHttpClient(final IClientConfig config) {
    final List<ExecutionListener<HttpClientRequest<ByteBuf>, HttpClientResponse<ByteBuf>>> listeners = new ArrayList<>();
    listeners.add(createBearerHeaderAdder());
    final PipelineConfiguratorComposite<HttpClientResponse<ByteBuf>, HttpClientRequest<ByteBuf>> pipelineConfigurator = new PipelineConfiguratorComposite<HttpClientResponse<ByteBuf>, 
            HttpClientRequest<ByteBuf>>(new HttpClientPipelineConfigurator<ByteBuf, ByteBuf>(),
            new HttpObjectAggregationConfigurator(maxChunkSize));
    final LoadBalancingHttpClient<ByteBuf, ByteBuf> client = LoadBalancingHttpClient.<ByteBuf, ByteBuf>builder()
            .withClientConfig(config)
            .withExecutorListeners(listeners)
            .withRetryHandler(getDefaultHttpRetryHandlerWithConfig(config))
            .withPipelineConfigurator(pipelineConfigurator)
            .withPoolCleanerScheduler(RibbonTransport.poolCleanerScheduler)
            .build();

    return client;
}
 

private Observable<String> initializeStream() {
    HttpClient<ByteBuf, ServerSentEvent> client =
            RxNetty.createHttpClient("localhost", port, PipelineConfigurators.<ByteBuf>clientSseConfigurator());

    return client.submit(HttpClientRequest.createGet("/hello")).
            flatMap(response -> {
                printResponseHeader(response);
                return response.getContent();
            }).map(serverSentEvent -> serverSentEvent.contentAsString());
}
 

public TestRouteBasic(String backendHost, int backendPort) {
    host = backendHost;
    port = backendPort;
    client = new HttpClientBuilder<ByteBuf, ByteBuf>(host, port)
            .withMaxConnections(10000)
            .config(new HttpClient.HttpClientConfig.Builder().readTimeout(1, TimeUnit.MINUTES).build())
            .build();
    stats = new ConnectionPoolMetricListener();
    client.subscribe(stats);
}
 

public WSClient(String host, int port, int firstStep, int stepSize, int stepDuration, String query) {
    this.host = host;
    this.port = port;
    this.firstStep = firstStep;
    this.stepSize = stepSize;
    this.stepDuration = stepDuration;
    this.query = query;

    System.out.println("Starting client with hostname: " + host + "  port: " + port + "  first-step: " + firstStep + "  step-size: " + stepSize + "  step-duration: " + stepDuration + "s  query: " + query);

    httpClient = new HttpClientBuilder<ByteBuf, ByteBuf>(this.host, this.port)
            .withMaxConnections(15000)
            .config(new HttpClient.HttpClientConfig.Builder().readTimeout(1, TimeUnit.MINUTES).build())
            .build();
    stats = new ConnectionPoolMetricListener();
    httpClient.subscribe(stats);

    client = httpClient.submit(HttpClientRequest.createGet(this.query))
            .flatMap(response -> {
                if (response.getStatus().code() == 200) {
                    counter.increment(CounterEvent.SUCCESS);
                } else {
                    counter.increment(CounterEvent.HTTP_ERROR);
                }
                return response.getContent().doOnNext(bb -> {
                    counter.add(CounterEvent.BYTES, bb.readableBytes());
                });
            }).doOnError((t) -> {
                if (t instanceof PoolExhaustedException) {
                    counter.increment(CounterEvent.POOL_EXHAUSTED);
                } else {
                    counter.increment(CounterEvent.NETTY_ERROR);
                }
            });
}
 

/**
 * Convert an HttpClientRequest to a ServerOperation 
 * 
 * @param server
 * @param request
 * @param rxClientConfig
 * @return
 */
protected ServerOperation<HttpClientResponse<O>> requestToOperation(final HttpClientRequest<I> request, final ClientConfig rxClientConfig) {
    Preconditions.checkNotNull(request);
    
    return new ServerOperation<HttpClientResponse<O>>() {
        final AtomicInteger count = new AtomicInteger(0);
        
        @Override
        public Observable<HttpClientResponse<O>> call(Server server) {
            HttpClient<I,O> rxClient = getOrCreateRxClient(server);
            setHostHeader(request, server.getHost());
            
            Observable<HttpClientResponse<O>> o;
            if (rxClientConfig != null) {
                o = rxClient.submit(request, rxClientConfig);
            } 
            else {
                o = rxClient.submit(request);
            }
            
            return o.concatMap(new Func1<HttpClientResponse<O>, Observable<HttpClientResponse<O>>>() {
                @Override
                public Observable<HttpClientResponse<O>> call(HttpClientResponse<O> t1) {
                    if (t1.getStatus().code()/100 == 4 || t1.getStatus().code()/100 == 5)
                        return responseToErrorPolicy.call(t1, backoffStrategy.call(count.getAndIncrement()));
                    else
                        return Observable.just(t1);
                }
            });
        }
    };
}
 

@Override
protected HttpClient<I, ServerSentEvent> getOrCreateRxClient(Server server) {
    HttpClientBuilder<I, ServerSentEvent> clientBuilder =
            new HttpClientBuilder<I, ServerSentEvent>(server.getHost(), server.getPort()).pipelineConfigurator(pipelineConfigurator);
    int requestConnectTimeout = getProperty(IClientConfigKey.Keys.ConnectTimeout, null, DefaultClientConfigImpl.DEFAULT_CONNECT_TIMEOUT);
    RxClient.ClientConfig rxClientConfig = new HttpClientConfig.Builder().build();
    
    HttpClient<I, ServerSentEvent> client = clientBuilder.channelOption(
            ChannelOption.CONNECT_TIMEOUT_MILLIS, requestConnectTimeout).config(rxClientConfig).build();
    return client;
}
 

public LoadBalancer<HttpClientHolder<ByteBuf, ServerSentEvent>> forVip(String targetVip) {
    Observable<MembershipEvent<Host>> eurekaHostSource = membershipSource.forInterest(Interests.forVips(targetVip), instanceInfo -> {
        String ipAddress = instanceInfo.getDataCenterInfo()
                .getAddresses().stream()
                .filter(na -> na.getProtocolType() == ProtocolType.IPv4)
                .collect(Collectors.toList()).get(0).getIpAddress();
        HashSet<ServicePort> servicePorts = instanceInfo.getPorts();
        ServicePort portToUse = servicePorts.iterator().next();
        return new Host(ipAddress, portToUse.getPort());
    });

    final Map<Host, HttpClientHolder<ByteBuf, ServerSentEvent>> hostVsHolders = new ConcurrentHashMap<>();

    String lbName = targetVip + "-lb";
    return LoadBalancers.newBuilder(eurekaHostSource.map(
            hostEvent -> {
                HttpClient<ByteBuf, ServerSentEvent> client = clientPool.getClientForHost(hostEvent.getClient());
                HttpClientHolder<ByteBuf, ServerSentEvent> holder;
                if (hostEvent.getType() == MembershipEvent.EventType.REMOVE) {
                    holder = hostVsHolders.remove(hostEvent.getClient());
                } else {
                    holder = new HttpClientHolder<>(client);
                    hostVsHolders.put(hostEvent.getClient(), holder);
                }
                return new MembershipEvent<>(hostEvent.getType(), holder);
            })).withWeightingStrategy(new LinearWeightingStrategy<>(new RxNettyPendingRequests<>()))
               .withName(lbName)
            .withFailureDetector(new RxNettyFailureDetector<>()).build();
}
 

@Test
public void testConnectionTerminatedOnClose() throws Exception {
    final TcpSocketProxy proxy = new TcpSocketProxy(
        new InetSocketAddress("localhost", 0),
        new InetSocketAddress("localhost", server.getServerPort())
    );
    proxy.start();

    final int listenPort = proxy.getListenPort();
    final HttpClient<ByteBuf, ByteBuf> client = RxNetty.createHttpClient("localhost", listenPort);

    final String first = client.submit(HttpClientRequest.createGet("/"))
        .flatMap(AbstractHttpContentHolder::getContent)
        .map(bb -> bb.toString(StandardCharsets.UTF_8))
        .toBlocking()
        .first();

    assertThat(first).isEqualTo("Hello World");
    LOGGER.info("first request done");
    proxy.shutdown();
    if (proxy.isShutdown()) {
        proxy.close();
    } else {
        fail("proxy should have been shutdown");
    }

    try {
        final URI uri = URI.create(String.format("http://localhost:%d/", listenPort));
        uri.toURL().getContent();
        fail("Shouldn't have been able to get content");
    } catch (IOException e) {
        // expected
    }
}
 

@Test
public void testGET() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createGet(PATH_1 + "?" + QUERY_1);

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .singleOrDefault(null).toBlocking().toFuture().get(5, TimeUnit.SECONDS);

    assertNull(result1);

    Wait.until(() -> getApmMockServer().getTraces().size() == 1);

    // Check stored traces (including 1 for the test client)
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);

    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_1, testProducer.getUri());
    assertEquals(QUERY_1, testProducer.getProperties(Constants.PROP_HTTP_QUERY).iterator().next().getValue());
    assertEquals("GET", testProducer.getOperation());
    assertEquals("GET", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

@Test
public void testPOST() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createPost(PATH_2);
    req1.writeStringContent(Observable.just(HELLO_THERE));

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .singleOrDefault(null).toBlocking().toFuture().get(5, TimeUnit.SECONDS);

    assertNull(result1);

    Wait.until(() -> getApmMockServer().getTraces().size() == 1);

    // Check stored traces (including 1 for the test client)
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);

    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_2, testProducer.getUri());
    assertTrue(testProducer.getProperties(Constants.PROP_HTTP_QUERY).isEmpty());
    assertEquals("POST", testProducer.getOperation());
    assertEquals("POST", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

@Test
public void testPUT() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createPut(PATH_3);
    req1.writeStringContent(Observable.just(HELLO_THERE));

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .singleOrDefault(null).toBlocking().toFuture().get(5, TimeUnit.SECONDS);

    assertNull(result1);

    Wait.until(() -> getApmMockServer().getTraces().size() == 1);

    // Check stored traces (including 1 for the test client)
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);

    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_3, testProducer.getUri());
    assertTrue(testProducer.getProperties(Constants.PROP_HTTP_QUERY).isEmpty());
    assertEquals("PUT", testProducer.getOperation());
    assertEquals("PUT", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

@Test
public void testGET() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createGet(PATH_1 + "?" + QUERY_1);

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .single().toBlocking().toFuture().get(5, TimeUnit.SECONDS);
    assertEquals(HELLO_WORLD, result1);

    // Check stored traces (including 1 for the test client)
    Wait.until(() -> getApmMockServer().getTraces().size() == 1);
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);
    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_1, testProducer.getUri());
    assertEquals(QUERY_1, testProducer.getProperties(Constants.PROP_HTTP_QUERY).iterator().next().getValue());
    assertEquals("GET", testProducer.getOperation());
    assertEquals("GET", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

@Test
public void testPOST() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createPost(PATH_2);
    req1.writeStringContent(Observable.just(HELLO_THERE));

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .single().toBlocking().toFuture().get(5, TimeUnit.SECONDS);
    assertEquals(HELLO_WORLD, result1);

    // Check stored traces (including 1 for the test client)
    Wait.until(() -> getApmMockServer().getTraces().size() == 1);
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);
    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_2, testProducer.getUri());
    assertTrue(testProducer.getProperties(Constants.PROP_HTTP_QUERY).isEmpty());
    assertEquals("POST", testProducer.getOperation());
    assertEquals("POST", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

@Test
public void testPUT() throws InterruptedException, ExecutionException, TimeoutException {
    SocketAddress serverAddress = new InetSocketAddress("127.0.0.1", server.getServerPort());

    /*Create a new client for the server address*/
    HttpClient<ByteBuf, ByteBuf> client = HttpClient.newClient(serverAddress);
    HttpClientRequest<ByteBuf, ByteBuf> req1 = client.createPut(PATH_3);
    req1.writeStringContent(Observable.just(HELLO_THERE));

    Object result1 = req1
            .flatMap((HttpClientResponse<ByteBuf> resp) -> resp.getContent()
                    .map(bb -> bb.toString(Charset.defaultCharset())))
            .single().toBlocking().toFuture().get(5, TimeUnit.SECONDS);
    assertEquals(HELLO_WORLD, result1);

    // Check stored traces (including 1 for the test client)
    Wait.until(() -> getApmMockServer().getTraces().size() == 1);
    assertEquals(1, getApmMockServer().getTraces().size());

    List<Producer> producers = NodeUtil.findNodes(getApmMockServer().getTraces().get(0).getNodes(), Producer.class);
    assertEquals("Expecting 1 producers", 1, producers.size());

    Producer testProducer = producers.get(0);

    assertEquals(PATH_3, testProducer.getUri());
    assertTrue(testProducer.getProperties(Constants.PROP_HTTP_QUERY).isEmpty());
    assertEquals("PUT", testProducer.getOperation());
    assertEquals("PUT", testProducer.getProperties("http_method").iterator().next().getValue());
}
 

SinkSubscriber(
    @NotNull final HttpClient<ByteBuf, ByteBuf> httpClient,
    @NotNull final Func1<Send, Observable<HttpClientRequest<ByteBuf>>> createPost
) {
    this.httpClient = httpClient;
    this.createPost = createPost;
}
 

public final HttpClient<ByteBuf, ByteBuf> getClient() {
    return client;
}
 

@Override
public HttpClient<ByteBuf, ByteBuf> newHttpClient(IClientConfig config) {
    this.config = config;
    return super.newHttpClient(config);
}
 

protected final HttpClient<ByteBuf, ByteBuf> getClient() {
    return this.client;
}
 

@Override
protected HttpClient<I, O> createRxClient(Server server) {
    HttpClientBuilder<I, O> clientBuilder;
    if (requestIdProvider != null) {
        clientBuilder = RxContexts.<I, O>newHttpClientBuilder(server.getHost(), server.getPort(), 
                requestIdProvider, RxContexts.DEFAULT_CORRELATOR, pipelineConfigurator);
    } else {
        clientBuilder = RxContexts.<I, O>newHttpClientBuilder(server.getHost(), server.getPort(), 
                RxContexts.DEFAULT_CORRELATOR, pipelineConfigurator);
    }
    Integer connectTimeout = getProperty(IClientConfigKey.Keys.ConnectTimeout,  null, DefaultClientConfigImpl.DEFAULT_CONNECT_TIMEOUT);
    Integer readTimeout    = getProperty(IClientConfigKey.Keys.ReadTimeout,     null, DefaultClientConfigImpl.DEFAULT_READ_TIMEOUT);
    Boolean followRedirect = getProperty(IClientConfigKey.Keys.FollowRedirects, null, null);
    HttpClientConfig.Builder builder = new HttpClientConfig.Builder().readTimeout(readTimeout, TimeUnit.MILLISECONDS);
    if (followRedirect != null) {
        builder.setFollowRedirect(followRedirect);
    }
    clientBuilder
            .channelOption(ChannelOption.CONNECT_TIMEOUT_MILLIS, connectTimeout)
            .config(builder.build());
    if (isPoolEnabled()) {
        clientBuilder
            .withConnectionPoolLimitStrategy(poolStrategy)
            .withIdleConnectionsTimeoutMillis(idleConnectionEvictionMills)
            .withPoolIdleCleanupScheduler(poolCleanerScheduler);
    } 
    else {
        clientBuilder
            .withNoConnectionPooling();
    }
    
    if (sslContextFactory != null) {
        try {
            SSLEngineFactory myFactory = new DefaultFactories.SSLContextBasedFactory(sslContextFactory.getSSLContext()) {
                @Override
                public SSLEngine createSSLEngine(ByteBufAllocator allocator) {
                    SSLEngine myEngine = super.createSSLEngine(allocator);
                    myEngine.setUseClientMode(true);
                    return myEngine;
                }
            };

            clientBuilder.withSslEngineFactory(myFactory);
        } catch (ClientSslSocketFactoryException e) {
            throw new RuntimeException(e);
        }
    }
    return clientBuilder.build();
}
 

@VisibleForTesting
Map<Server, HttpClient<I, O>> getRxClients() {
    return rxClientCache;
}
 

public HttpClient<ByteBuf, ByteBuf> newHttpClient(IClientConfig config) {
    return RibbonTransport.newHttpClient(config);
}
 

public final HttpClient<ByteBuf, ByteBuf> newHttpClient(String name) {
    IClientConfig config = clientConfigFactory.newConfig();
    config.loadProperties(name);
    return newHttpClient(config);
}
 

public static Observable<String> createRequestFromLB(Observable<MembershipEvent<Host>> eurekaHostSource) {

        /**
         * Create a LoadBalancer instance from eureka's host stream.
         */
        return LoadBalancers.fromHostSource(
                /**
                 * Map over the host event and create a RxNetty HTTP client.
                 * This enable Ocelli to directly manage the client instance and hence reduce a map lookup to get a
                 * client instance for a host for every request processing.
                 * If you prefer Ocelli to manage the host instances, that is possible too by omitting this map function
                 * and transforming the retrieved host via {@link LoadBalancer#choose()} to a client of
                 * your choice.
                 */
                eurekaHostSource.map(
                        hostEvent -> {
                            Host host = hostEvent.getClient();
                            /**
                             * Typically, you will use a pool of clients, so that for the same host, you do not end up creating a
                             * new client instance.
                             * This example creates a new client to reduce verbosity.
                             */
                            HttpClient<ByteBuf, ByteBuf> client = RxNetty.createHttpClient(host.getHostName(),
                                                                                           host.getPort());

                            /**
                             * Since, Ocelli expects a {@link netflix.ocelli.MembershipEvent} instance, wrap the client
                             * into that event.
                             */
                            return new MembershipEvent<>(hostEvent.getType(), client);
                        }))
                .choose() /* Chooses the best possible host for the next request*/
                /**
                 * Submit the request to the returned client.
                 */
                .flatMap(client ->
                                 client.submit(HttpClientRequest.createGet("/"))
                                         /* Print the HTTP initial line and headers. Return the content.*/
                                         .flatMap((Func1<HttpClientResponse<ByteBuf>, Observable<ByteBuf>>) response -> {
                                                     /**
                                                      * Printing the HTTP initial line.
                                                      */
                                                     System.out.println( response.getHttpVersion().text() + ' '
                                                                         + response.getStatus().code() + ' '
                                                                         + response .getStatus().reasonPhrase());
                                                     /**
                                                      * Printing HTTP headers.
                                                      */
                                                     for (Map.Entry<String, String> header : response.getHeaders().entries()) {
                                                         System.out.println(header.getKey() + ": " + header.getValue());
                                                     }

                                                     // Line break after the headers.
                                                     System.out.println();

                                                     return response.getContent();
                                                 })
                                         /* Convert the ByteBuf for each content chunk into a string. */
                                         .map(byteBuf -> byteBuf.toString(Charset.defaultCharset())));
    }
 

public HttpClient<ByteBuf, ByteBuf> getClient() {
    return client;
}