Java RequestHandler类代码示例

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
/**
 * Setups the test environment.
 *
 * @throws Exception if any error occurs
 */
@Before
public void setUp() throws Exception {

    instance = new HealthCheckTaskExecutor();

    server = RxNetty.createHttpServer(PORT, new RequestHandler<ByteBuf, ByteBuf>() {
        @Override
        public Observable<Void> handle(HttpServerRequest<ByteBuf> request, HttpServerResponse<ByteBuf> response) {
            if ("/health".equals(request.getPath())) {

                return response.writeStringAndFlush("{\"status\": \"UP\", \"service\": {\"status\": \"UP\"}}");
            }
            response.setStatus(HttpResponseStatus.NOT_FOUND);
            return response.close();
        }
    }).start();
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Setup
public void setup() {
  server = RxNetty.createHttpServer(SERVER_PORT, new RequestHandler<ByteBuf, ByteBuf>() {
    public rx.Observable handle(HttpServerRequest<ByteBuf> request,
                                HttpServerResponse<ByteBuf> response) {
      return response.flush();
    }
  });
  server.start();
  client = new OkHttpClient();
  client.setRetryOnConnectionFailure(false);
  okFeign = Feign.builder()
      .client(new feign.okhttp.OkHttpClient(client))
      .target(FeignTestInterface.class, "http://localhost:" + SERVER_PORT);
  queryRequest = new Request.Builder()
      .url("http://localhost:" + SERVER_PORT + "/?Action=GetUser&Version=2010-05-08&limit=1")
      .build();
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Test
public void testStreamDoesNotRunWhenSubscribeFails_mesos5xxResponse() throws Throwable {
    final RequestHandler<ByteBuf, ByteBuf> handler = (request, response) -> {
        response.setStatus(HttpResponseStatus.INTERNAL_SERVER_ERROR);
        return response.close();
    };
    final HttpServer<ByteBuf, ByteBuf> server = RxNetty.createHttpServer(0, handler);
    server.start();
    final URI uri = URI.create(String.format("http://localhost:%d/api/v1/scheduler", server.getServerPort()));
    final MesosClient<String, String> client = createClient(uri);

    try {
        client.openStream().await();
        fail("Expect an exception to be propagated up because subscribe will 500");
    } catch (Mesos5xxException e) {
        // expected
        final MesosClientErrorContext ctx = e.getContext();
        assertThat(ctx.getStatusCode()).isEqualTo(500);
    } finally {
        server.shutdown();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Test
public void testStreamDoesNotRunWhenSubscribeFails_mismatchContentType() throws Throwable {
    final RequestHandler<ByteBuf, ByteBuf> handler = (request, response) -> {
        response.setStatus(HttpResponseStatus.OK);
        response.getHeaders().setHeader("Content-Type", "application/json");
        return response.close();
    };
    final HttpServer<ByteBuf, ByteBuf> server = RxNetty.createHttpServer(0, handler);
    server.start();
    final URI uri = URI.create(String.format("http://localhost:%d/api/v1/scheduler", server.getServerPort()));
    final MesosClient<String, String> client = createClient(uri);

    try {
        client.openStream().await();
        fail("Expect an exception to be propagated up because of content type mismatch");
    } catch (MesosException e) {
        // expected
        final MesosClientErrorContext ctx = e.getContext();
        assertThat(ctx.getStatusCode()).isEqualTo(200);
        assertThat(ctx.getMessage()).isEqualTo("Response had Content-Type \"application/json\" expected \"text/plain;charset=utf-8\"");
    } finally {
        server.shutdown();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
public HttpServer<ByteBuf, ByteBuf> createServer() {
    HttpServer<ByteBuf, ByteBuf> server = RxNetty.newHttpServerBuilder(port, new RequestHandler<ByteBuf, ByteBuf>() {
        @Override
        public Observable<Void> handle(HttpServerRequest<ByteBuf> request, final HttpServerResponse<ByteBuf> response) {
            if (request.getPath().contains("/v2/apps")) {
                if (request.getHttpMethod().equals(HttpMethod.POST)) {
                    return handleTest(request, response);
                }
            }
            response.setStatus(HttpResponseStatus.NOT_FOUND);
            return response.close();
        }
    }).pipelineConfigurator(PipelineConfigurators.<ByteBuf, ByteBuf>httpServerConfigurator()).enableWireLogging(LogLevel.ERROR).build();

    System.out.println("RxTetstServer server started...");
    return server;
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Provides
public HttpServer providesKaryonTransport() {
    SimpleUriRouter simpleUriRouter = new SimpleUriRouter();
    simpleUriRouter.addUri("/foo", new RequestHandler() {
        @Override
        public Observable<Void> handle(HttpServerRequest request, HttpServerResponse response) {
            response.writeAndFlush("Hello World", StringTransformer.DEFAULT_INSTANCE);
            response.setStatus(HttpResponseStatus.OK);
            return Observable.empty();
        }

        @Override
        public Observable<Void> handle(Object input, Object output) {
            return Observable.empty();
        }
    });
    return KaryonTransport.newHttpServer(8888, simpleUriRouter);
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
public HttpServer<ByteBuf, ByteBuf> createServer() {
    HttpServer<ByteBuf, ByteBuf> server = RxNetty.newHttpServerBuilder(port, new RequestHandler<ByteBuf, ByteBuf>() {
        @Override
        public Observable<Void> handle(HttpServerRequest<ByteBuf> request, final HttpServerResponse<ByteBuf> response) {
            if (request.getPath().contains("/users")) {
                if (request.getHttpMethod().equals(HttpMethod.GET)) {
                    return handleRecommendationsByUserId(request, response);
                } else {
                    return handleUpdateRecommendationsForUser(request, response);
                }
            }
            if (request.getPath().contains("/recommendations")) {
                return handleRecommendationsBy(request, response);
            }
            if (request.getPath().contains("/movies")) {
                return handleRegisterMovie(request, response);
            }
            response.setStatus(HttpResponseStatus.NOT_FOUND);
            return response.close();
        }
    }).pipelineConfigurator(PipelineConfigurators.<ByteBuf, ByteBuf>httpServerConfigurator()).enableWireLogging(LogLevel.ERROR).build();

    System.out.println("RxMovie server started...");
    return server;
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
public static void main(final String[] args) {
    final int port = 8080;

    RxNetty.createHttpServer(port, new RequestHandler<ByteBuf, ByteBuf>() {
        @Override
        public Observable<Void> handle(HttpRequest<ByteBuf> request, final HttpResponse<ByteBuf> response) {
            System.out.println("New request recieved");
            System.out.println(request.getHttpMethod() + " " + request.getUri() + ' ' + request.getHttpVersion());
            for (Map.Entry<String, String> header : request.getHeaders().entries()) {
                System.out.println(header.getKey() + ": " + header.getValue());
            }
            // This does not consume request content, need to figure out an elegant/correct way of doing that.
            return response.writeStringAndFlush("Welcome!!! \n\n");
        }
    }).startAndWait();
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Override
public Observable<Void> handle(HttpServerRequest<ByteBuf> request, HttpServerResponse<ByteBuf> response) {
    RequestHandler<ByteBuf, ByteBuf> handler = findRequestHandler(request.getUri());
    if (handler != null) {
        return handler.handle(request, response);
    } else {
        response.setStatus(HttpResponseStatus.NOT_FOUND);
        return response.close();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
private RequestHandler<ByteBuf, ByteBuf> findRequestHandler(String uri) {
    for (String uriKey : uriHandlers.keySet()) {
        if (uri.equals(uriKey) || uri.startsWith(uriKey + PATH_DELIM)) {
            return uriHandlers.get(uriKey);
        }
    }
    return null;
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Test
public void testStreamDoesNotRunWhenSubscribeFails_mesos4xxResponse() throws Throwable {
    final String errorMessage = "Error message that should come from the server";
    final RequestHandler<ByteBuf, ByteBuf> handler = (request, response) -> {
        response.setStatus(HttpResponseStatus.BAD_REQUEST);
        final byte[] msgBytes = errorMessage.getBytes(StandardCharsets.UTF_8);
        response.getHeaders().setHeader("Content-Length", msgBytes.length);
        response.getHeaders().setHeader("Content-Type", "text/plain;charset=utf-8");
        response.writeBytes(msgBytes);
        return response.close();
    };
    final HttpServer<ByteBuf, ByteBuf> server = RxNetty.createHttpServer(0, handler);
    server.start();
    final URI uri = URI.create(String.format("http://localhost:%d/api/v1/scheduler", server.getServerPort()));
    final MesosClient<String, String> client = createClient(uri);

    try {
        client.openStream().await();
        fail("Expect an exception to be propagated up because subscribe will 400");
    } catch (Mesos4xxException e) {
        // expected
        final MesosClientErrorContext ctx = e.getContext();
        assertThat(ctx.getStatusCode()).isEqualTo(400);
        assertThat(ctx.getMessage()).isEqualTo(errorMessage);
    } finally {
        server.shutdown();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Test
@Ignore
public void testBurstyObservable_missingBackpressureException() throws Throwable {
    final String subscribedMessage = "{\"type\": \"SUBSCRIBED\",\"subscribed\": {\"framework_id\": {\"value\":\"12220-3440-12532-2345\"},\"heartbeat_interval_seconds\":15.0}";
    final String heartbeatMessage = "{\"type\":\"HEARTBEAT\"}";
    final byte[] hmsg = heartbeatMessage.getBytes(StandardCharsets.UTF_8);
    final byte[] hbytes = String.format("%d\n", heartbeatMessage.getBytes().length).getBytes(StandardCharsets.UTF_8);

    final RequestHandler<ByteBuf, ByteBuf> handler = (request, response) -> {
        response.setStatus(HttpResponseStatus.OK);
        response.getHeaders().setHeader("Content-Type", "text/plain;charset=utf-8");
        writeRecordIOMessage(response, subscribedMessage);
        for (int i = 0; i < 20000; i++) {
            response.writeBytes(hbytes);
            response.writeBytes(hmsg);
        }
        return response.flush();
    };
    final HttpServer<ByteBuf, ByteBuf> server = RxNetty.createHttpServer(0, handler);
    server.start();
    final URI uri = URI.create(String.format("http://localhost:%d/api/v1/scheduler", server.getServerPort()));
    final MesosClient<String, String> client = createClientForStreaming(uri).build();

    try {
        client.openStream().await();
        fail("Expect an exception to be propagated up due to backpressure");
    } catch (MissingBackpressureException e) {
        // expected
        e.printStackTrace();
        assertThat(e.getMessage()).isNullOrEmpty();
    } finally {
        server.shutdown();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Test
public void testBurstyObservable_unboundedBufferSucceeds() throws Throwable {
    msgNo = 0;
    final int numMessages = 20000;
    final String subscribedMessage = "{\"type\": \"SUBSCRIBED\",\"subscribed\": {\"framework_id\": {\"value\":\"12220-3440-12532-2345\"},\"heartbeat_interval_seconds\":15.0}";
    final String heartbeatMessage = "{\"type\":\"HEARTBEAT\"}";
    final RequestHandler<ByteBuf, ByteBuf> handler = (request, response) -> {
        response.setStatus(HttpResponseStatus.OK);
        response.getHeaders().setHeader("Content-Type", "text/plain;charset=utf-8");
        writeRecordIOMessage(response, subscribedMessage);
        for (int i = 0; i < numMessages; i++) {
            writeRecordIOMessage(response, heartbeatMessage);
        }
        return response.close();
    };
    final HttpServer<ByteBuf, ByteBuf> server = RxNetty.createHttpServer(0, handler);
    server.start();
    final URI uri = URI.create(String.format("http://localhost:%d/api/v1/scheduler", server.getServerPort()));
    final MesosClient<String, String> client = createClientForStreaming(uri)
            .onBackpressureBuffer()
            .build();

    try {
        client.openStream().await();
    } finally {
        // 20000 heartbeats PLUS 1 subscribe
        assertEquals("All heartbeats received (plus the subscribed)", 1 + numMessages, msgNo);
        server.shutdown();
    }
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
public IndexResource() {
    endpoint = new HelloEndpoint();
    delegate = new SimpleUriRouter<>();

    delegate
    .addUri("/", new RequestHandler<ByteBuf, ByteBuf>() {
        @Override
        public Observable<Void> handle(HttpServerRequest<ByteBuf> request,
                final HttpServerResponse<ByteBuf> response) {

            return endpoint.getHello()
            .flatMap(new Func1<String, Observable<Void>>() {
                @Override
                public Observable<Void> call(String body) {
                    String instanceId = "";
                    String userdata = "";

                    try{
                        instanceId = execCmd("curl http://metadata/computeMetadata/v1/instance/id -H Metadata-Flavor:Google") + execCmd("wget -q -O - http://instance-data/latest/meta-data/instance-id");
                        userdata = System.getenv("USERDATA");

                    } catch (Exception e){
                        e.printStackTrace();
                    }
                    response.writeString("<html><head><style>body{text-align:center;font-family:'Lucida Grande'}</style></head><body><img src='http://kenzan.com/wp-content/themes/kenzan/images/logo-reg.png' /><h2>Example Spinnaker Application</h2><h3>Instance Id " + instanceId + "</h3><h3>$USERDATA ENV VAR: " + userdata + "</h3></body></html>");
                    return response.close();
                }
            });
        }
    });
}
 

import io.reactivex.netty.protocol.http.server.RequestHandler; //导入依赖的package包/类
@Override
protected RequestHandler<ByteBuf, ByteBuf> getHandler() {
    ArrayList<InstanceInfo> instanceInfos = new ArrayList<>();
    instanceInfos.add(InstanceInfo.Builder.newBuilder().setAppName("foo").setVIPAddress("bar").setHostName("host1").build());
    instanceInfos.add(InstanceInfo.Builder.newBuilder().setAppName("foo").setVIPAddress("bar").setHostName("host2").build());
    when(hostService.getHosts("foo")).thenReturn(instanceInfos);
    return new HostsHandler(hostService, new ObjectMapper());
}