[NIFI-535] Cannot create templates from nested processor groups - ASF JIRA

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Type: Bug
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 0.1.0
Fix Version/s: 0.1.0
Component/s: Core Framework
Labels:
None
Environment:
Mac OSX Yosemite 10.10.3
Java 1.8 u31

Description

From the latest 'develop' branch, NiFi throws an exception when we attempt to create a template from nested processor groups.

Steps to reproduce (done from both an empty canvas and a canvas with existing processors / groups):

Add a processor group called "Outer"
Navigate into "Outer"
Add a GetFile processor
Add a processor group "Inner"
Navigate into "Inner"
Add a processor "PutFile"
Navigate back to the top-level canvas
Select the "Outer" processor group
Click the "Create Template" button in the middle of the toolbar
Enter a name and click the "Create" button
The UI redirects to the error page with the display: "An unexpected error has occurred. Please check the logs for additional details."

So, the hierarchy of processors / groups is:

Outer
- GetFile
- Inner
  - PutFile

The nifi-user.log file contains a single stacktrace for this error:

2015-04-22 10:06:49,994 ERROR [NiFi Web Server-18] 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.util.SnippetUtils.addControllerServicesToSnippet(SnippetUtils.java:197) ~[classes/:na]
        at org.apache.nifi.web.util.SnippetUtils.addControllerServicesToSnippet(SnippetUtils.java:203) ~[classes/:na]
        at org.apache.nifi.web.util.SnippetUtils.addControllerServicesToSnippet(SnippetUtils.java:203) ~[classes/:na]
        at org.apache.nifi.web.util.SnippetUtils.populateFlowSnippet(SnippetUtils.java:191) ~[classes/:na]
        at org.apache.nifi.web.StandardNiFiServiceFacade$27.execute(StandardNiFiServiceFacade.java:996) ~[classes/:0.1.0-incubating-SNAPSHOT]
        at org.apache.nifi.web.StandardNiFiServiceFacade$27.execute(StandardNiFiServiceFacade.java:985) ~[classes/:0.1.0-incubating-SNAPSHOT]
        at org.apache.nifi.web.StandardOptimisticLockingManager.configureFlow(StandardOptimisticLockingManager.java:84) ~[nifi-web-optimistic-locking-0.1.0-incubating-SNAPSHOT.jar:0.1.0-incubating-SNAPSHOT]
        at org.apache.nifi.web.StandardNiFiServiceFacade.createSnippet(StandardNiFiServiceFacade.java:985) ~[classes/:0.1.0-incubating-SNAPSHOT]
        at org.apache.nifi.web.StandardNiFiServiceFacade$$FastClassBySpringCGLIB$$358780e0.invoke(<generated>) ~[spring-core-4.1.4.RELEASE.jar:0.1.0-incubating-SNAPSHOT]
        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:85) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.apache.nifi.web.NiFiServiceFacadeLock.createLock(NiFiServiceFacadeLock.java:40) ~[classes/:0.1.0-incubating-SNAPSHOT]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_31]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_31]
        at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_31]
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:68) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.apache.nifi.web.StandardNiFiServiceFacade$$EnhancerBySpringCGLIB$$684a2a06.createSnippet(<generated>) ~[spring-core-4.1.4.RELEASE.jar:0.1.0-incubating-SNAPSHOT]
        at org.apache.nifi.web.api.SnippetResource.createSnippet(SnippetResource.java:332) ~[classes/:na]
        at org.apache.nifi.web.api.SnippetResource.createSnippet(SnippetResource.java:263) ~[classes/:na]
        at org.apache.nifi.web.api.SnippetResource$$FastClassBySpringCGLIB$$527dc323.invoke(<generated>) ~[spring-core-4.1.4.RELEASE.jar:na]
        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:64) ~[spring-security-core-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653) ~[spring-aop-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.apache.nifi.web.api.SnippetResource$$EnhancerBySpringCGLIB$$823b2eb0.createSnippet(<generated>) ~[spring-core-4.1.4.RELEASE.jar:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_31]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_31]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_31]
        at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0_31]
        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.SubLocatorRule.accept(SubLocatorRule.java:137) ~[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:808) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.apache.nifi.web.filter.NodeRequestFilter.doFilter(NodeRequestFilter.java:91) [classes/:na]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83) [jetty-servlets-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:300) [jetty-servlets-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.apache.nifi.web.filter.RequestLogger.doFilter(RequestLogger.java:67) [classes/:na]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter.doFilter(AbstractPreAuthenticatedProcessingFilter.java:94) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.apache.nifi.web.security.x509.X509AuthenticationFilter.doFilter(X509AuthenticationFilter.java:121) [nifi-web-security-0.1.0-incubating-SNAPSHOT.jar:0.1.0-incubating-SNAPSHOT]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.apache.nifi.web.security.authorization.NodeAuthorizedUserFilter.doFilter(NodeAuthorizedUserFilter.java:121) [nifi-web-security-0.1.0-incubating-SNAPSHOT.jar:0.1.0-incubating-SNAPSHOT]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) [spring-security-web-3.2.5.RELEASE.jar:3.2.5.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) [spring-web-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) [spring-web-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.apache.nifi.web.filter.ThreadLocalFilter.doFilter(ThreadLocalFilter.java:39) [classes/:na]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.apache.nifi.web.filter.TimerFilter.doFilter(TimerFilter.java:53) [classes/:na]
        at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:577) [jetty-security-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:223) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.Server.handle(Server.java:497) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:310) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257) [jetty-server-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:540) [jetty-io-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.10.v20150310.jar:9.2.10.v20150310]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.10.v20150310.jar:9.2.10.v20150310]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_31]

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0001-NIFI-535-Fixed-NPE-in-SnippetUtils.patch
22/Apr/15 16:19
2 kB
Mark Payne

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People

Assignee:: Unassigned

Reporter:: Brian Ghigiarelli

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Dates

Created:: 22/Apr/15 14:17

Updated:: 22/Apr/15 16:45

Resolved:: 22/Apr/15 16:45