Hello
It appears to be throwing an NPE when establishing the position of the
component you're trying to add. While clearly an unfriendly error
message as-is did you specify the position in your request?
Thanks
JOe
On Wed, Apr 19, 2017 at 10:36 AM, Pushkara R <pushkar1...@gmail.com> wrote:
> Hi,
>
> I'm writing a custom REST client for NiFi. I am having troubles with the
> POST method on the /process-groups/<id>/remote-process-groups endpoint.
>
> The body of the POST method is as follows :
>
> {
> "component": {
> "targetUri": target_uri,
> "communicationsTimeout": "30 sec",
> "yieldDuration": "10 sec",
> "transportProtocol": "HTTP",
> "proxyHost": "",
> "proxyPort": "",
> "proxyUser": "",
> "proxyPassword": ""
> }, "revision": {
> "clientId": str(uuid.uuid4()),
> "version": 0
> }
> }
>
> Whenever I make the call with the target_uri as
> "http://10.24.24.221:8080/nifi";, I get back a status of 500 and a response
> that says "An unexpected error has occured. Please check the logs for
> additional details."
>
> I have pasted the error logs from nifi-app.log and then below that logs from
> nifi-user.log. Please let me know what could be causing this issue. It would
> be really helpful.
>
> Thanks
> Pushkar
>
> <nifi-app.log>
> I 2017-04-19 19:54:35,663 ERROR [Flow Service Tasks Thread-2]
> o.a.nifi.controller.StandardFlowService Unable to save flow controller
> configuration due to: java.lang.NullPointerException
> java.lang.NullPointerException: null
> at
> org.apache.nifi.controller.serialization.StandardFlowSerializer.addPosition(StandardFlowSerializer.java:141)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.serialization.StandardFlowSerializer.addPosition(StandardFlowSerializer.java:136)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.serialization.StandardFlowSerializer.addRemoteProcessGroup(StandardFlowSerializer.java:247)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.serialization.StandardFlowSerializer.addProcessGroup(StandardFlowSerializer.java:190)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.serialization.StandardFlowSerializer.serialize(StandardFlowSerializer.java:96)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.FlowController.serialize(FlowController.java:1431)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO.save(StandardXMLFlowConfigurationDAO.java:162)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.controller.StandardFlowService$SaveReportingTask.run(StandardFlowService.java:963)
> ~[nifi-framework-core-1.1.2.jar:1.1.2]
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> [na:1.8.0_121]
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> [na:1.8.0_121]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> [na:1.8.0_121]
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> [na:1.8.0_121]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> [na:1.8.0_121]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> [na:1.8.0_121]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
>
>
> <nifi-user.log>
> 2017-04-19 19:54:35,219 INFO [NiFi Web Server-75]
> org.apache.nifi.web.filter.RequestLogger Attempting request for (anonymous)
> POST
> http://10.24.24.222:8080/nifi-api/process-groups/8f5df7f8-015a-1000-7fd2-ef2d19738677/remote-process-groups
> (source ip: 10.24.24.222)
> 2017-04-19 19:54:35,225 ERROR [NiFi Web Server-75]
> o.a.nifi.web.api.config.ThrowableMapper An unexpected error has occurred:
> java.lang.NullPointerException. Returning Internal Server Error response.
> java.lang.NullPointerException: null
> at
> org.apache.nifi.web.api.dto.DtoFactory.createPositionDto(DtoFactory.java:429)
> ~[classes/:na]
> at
> org.apache.nifi.web.api.dto.DtoFactory.createRemoteProcessGroupDto(DtoFactory.java:1530)
> ~[classes/:na]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade.lambda$createRemoteProcessGroup$103(StandardNiFiServiceFacade.java:1580)
> ~[classes/:1.1.2]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade.lambda$createComponent$86(StandardNiFiServiceFacade.java:1338)
> ~[classes/:1.1.2]
> at
> org.apache.nifi.web.revision.NaiveRevisionManager.updateRevision(NaiveRevisionManager.java:121)
> ~[nifi-web-optimistic-locking-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade.createComponent(StandardNiFiServiceFacade.java:1331)
> ~[classes/:1.1.2]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade.createRemoteProcessGroup(StandardNiFiServiceFacade.java:1576)
> ~[classes/:1.1.2]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade$$FastClassBySpringCGLIB$$358780e0.invoke(<generated>)
> ~[classes/:1.1.2]
> at
> org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
> ~[spring-core-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:720)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.apache.nifi.web.NiFiServiceFacadeLock.createLock(NiFiServiceFacadeLock.java:41)
> ~[classes/:1.1.2]
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ~[na:1.8.0_121]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> ~[na:1.8.0_121]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> ~[na:1.8.0_121]
> at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:655)
> ~[spring-aop-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.apache.nifi.web.StandardNiFiServiceFacade$$EnhancerBySpringCGLIB$$1015922f.createRemoteProcessGroup(<generated>)
> ~[classes/:1.1.2]
> at
> org.apache.nifi.web.api.ProcessGroupResource.lambda$createRemoteProcessGroup$25(ProcessGroupResource.java:1388)
> ~[classes/:na]
> at
> org.apache.nifi.web.api.ApplicationResource.withWriteLock(ApplicationResource.java:666)
> ~[classes/:na]
> at
> org.apache.nifi.web.api.ProcessGroupResource.createRemoteProcessGroup(ProcessGroupResource.java:1346)
> ~[classes/:na]
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ~[na:1.8.0_121]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> ~[na:1.8.0_121]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> ~[na:1.8.0_121]
> at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
> at
> com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
> ~[jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542)
> [jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473)
> [jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419)
> [jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409)
> [jersey-server-1.19.jar:1.19]
> at
> com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409)
> [jersey-servlet-1.19.jar:1.19]
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558)
> [jersey-servlet-1.19.jar:1.19]
> at
> com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733)
> [jersey-servlet-1.19.jar:1.19]
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
> [javax.servlet-api-3.1.0.jar:3.1.0]
> at
> org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:845)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1689)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.apache.nifi.web.filter.RequestLogger.doFilter(RequestLogger.java:66)
> [classes/:na]
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:122)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.authenticate(NiFiAuthenticationFilter.java:83)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.apache.nifi.web.security.NiFiAuthenticationFilter.doFilter(NiFiAuthenticationFilter.java:57)
> [nifi-web-security-1.1.2.jar:1.1.2]
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176)
> [spring-security-web-4.0.3.RELEASE.jar:4.0.3.RELEASE]
> at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
> [spring-web-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
> [spring-web-4.2.4.RELEASE.jar:4.2.4.RELEASE]
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1676)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.apache.nifi.web.filter.TimerFilter.doFilter(TimerFilter.java:51)
> [classes/:na]
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
> [jetty-security-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1174)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
> [jetty-servlet-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1106)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:119)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:459)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at org.eclipse.jetty.server.Server.handle(Server.java:524)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:319)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:253)
> [jetty-server-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
> [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517]
> at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
> [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
> [jetty-io-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
> [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
> [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
> [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
> [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
> [jetty-util-9.3.9.v20160517.jar:9.3.9.v20160517]
> at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
>
