BTW, sample project can be found @
https://github.com/johnament/cxf-demo-reactive-cdi
On Sun, Feb 4, 2018 at 11:13 AM John D. Ament <johndam...@apache.org> wrote:
> I built a simple webapp (WAR file, deploying to Tomcat) that depends on
> the CXF 3.2.2 libraries + Weld 3.0.2. I don't believe CDI has anything to
> do with my problem though.
>
> I registered a feature/server customizer that can deal with the invoker
> logic required, and provided a rest controller that simply invokes the
> postman echo service
>
> Feature/Extension:
>
> @ApplicationScoped
> public class MyAppFeature implements Feature,
> JAXRSServerFactoryCustomizationExtension {
> public boolean configure(FeatureContext featureContext) {
> featureContext.register(JsrProvider.class);
> featureContext.register(ReactorInvokerProvider.class);
> return true;
> }
>
> @Override
> public void customize(JAXRSServerFactoryBean jaxrsServerFactoryBean) {
> ReactorInvoker invoker = new ReactorInvoker();
> invoker.setUseStreamingSubscriberIfPossible(false);
> jaxrsServerFactoryBean.setInvoker(invoker);
> StreamingResponseProvider<JsonObject> streamProvider = new
> StreamingResponseProvider<>();
>
> streamProvider.setProduceMediaTypes(Collections.singletonList("application/json"));
> jaxrsServerFactoryBean.setProvider(streamProvider);
> jaxrsServerFactoryBean.getOutInterceptors().add(new
> LoggingOutInterceptor());
> }
> }
>
> RestController:
>
> @RequestScoped
> @Path("/")
> public class RestController {
> @GET
> @Produces(MediaType.APPLICATION_JSON)
> public void doGet(@Suspended AsyncResponse asyncResponse) {
> ClientBuilder.newClient()
> .register(MyAppFeature.class)
> .target("https://postman-echo.com/get";)
> .queryParam("arg1", "arg1")
> .queryParam("arg2", "arg2")
> .request(MediaType.APPLICATION_JSON_TYPE)
> .rx(ReactorInvoker.class)
> .get(JsonObject.class)
> .subscribe(new
> JsonStreamingAsyncSubscriber<>(asyncResponse));
> }
> }
>
> When I attempt to invoke this endpoint, I see a NPE in the logs
>
> 04-Feb-2018 11:07:20.245 WARNING [http-nio-8080-exec-69]
> org.apache.cxf.phase.PhaseInterceptorChain.doDefaultLogging Interceptor for
> {http://rest.mycompany.com/}RestController has thrown exception,
> unwinding now
> java.lang.NullPointerException
> at
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.initContinuation(AsyncResponseImpl.java:306)
> at
> org.apache.cxf.jaxrs.impl.AsyncResponseImpl.<init>(AsyncResponseImpl.java:68)
> at
> org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameter(JAXRSUtils.java:826)
> at
> org.apache.cxf.jaxrs.utils.JAXRSUtils.processParameters(JAXRSUtils.java:795)
> at
> org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:214)
> at
> org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:78)
> at
> org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
> at
> org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
> at
> org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:267)
> at
> org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:234)
> at
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:208)
> at
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:160)
> at
> org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:191)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:301)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:225)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:276)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
> at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
> at
> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
> at
> org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
> at
> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
> at
> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
> at
> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
> at
> org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
> at
> org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at
> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
> at java.lang.Thread.run(Thread.java:748)
>
> Is there anything else that needs to happen to register the invoker to
> handle async responses?
>
> John
>
>
