Re: Question about error handling

Petteri Sulonen Thu, 16 Jun 2016 22:40:33 -0700

Hi --

Here's a dump of what's in catalina.out for the problem request.


/Petteri

04:44:47,649  INFO DB:536 - getColumns returned 9 columns
04:44:47,651  INFO DB:536 - getColumns returned 9 columns
04:44:47,653  INFO UsersResource:98 - ServiceResource.addNameParameter
04:44:47,655  INFO UsersResource:100 - Current segment is me
04:44:47,669  INFO DB:536 - getColumns returned 9 columns

04:44:47,673 INFO DB:388 - getColumns cf=Entity_Dictionaries key=b8f8f336-30c9-3553-b447-6891f3e1e6bf:permissions

04:44:47,675  INFO DB:404 - getColumns returned 2 columns

04:44:47,678 INFO DB:388 - getColumns cf=Entity_Dictionaries key=2349d142-317a-11e6-9322-080027cf389a:permissions

04:44:47,679  INFO DB:404 - getColumns returned 0 columns

04:44:47,680 INFO DB:388 - getColumns cf=Entity_Dictionaries key=2349d142-317a-11e6-9322-080027cf389a:rolenames

04:44:47,682  INFO DB:404 - getColumns returned 0 columns

04:44:47,691 INFO DB:388 - getColumns cf=Entity_Composite_Dictionaries key=834fdec4-2e11-11e6-b255-080027cf389a:orgconfig

04:44:47,692  INFO DB:404 - getColumns returned 0 columns

04:44:47,711 ERROR ThrowableMapper:35 - An uncaught exception occurred during HTTP invocation

java.lang.NullPointerException

at org.apache.usergrid.services.AbstractConnectionsService.getItemByName(AbstractConnectionsService.java:243) at org.apache.usergrid.services.AbstractService.invokeItemWithName(AbstractService.java:771) at org.apache.usergrid.services.AbstractService.invoke(AbstractService.java:728) at org.apache.usergrid.services.AbstractService.invoke(AbstractService.java:645) at org.apache.usergrid.services.ServiceRequest.execute(ServiceRequest.java:245) at org.apache.usergrid.services.ServiceRequest.invokeMultiple(ServiceRequest.java:281) at org.apache.usergrid.services.ServiceRequest.execute(ServiceRequest.java:248) at org.apache.usergrid.services.ServiceRequest.execute(ServiceRequest.java:212) at org.apache.usergrid.rest.applications.ServiceResource.executeServiceRequest(ServiceResource.java:315) at org.apache.usergrid.rest.applications.ServiceResource.executeGet(ServiceResource.java:361)

at sun.reflect.GeneratedMethodAccessor115.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185) at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.SubLocatorRule.accept(SubLocatorRule.java:137) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:927) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:875) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:829) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.usergrid.rest.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:92) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:436) at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:745)

04:44:47,714 ERROR AbstractExceptionMapper:72 - org.apache.usergrid.rest.exceptions.UncaughtException 5XX Uncaught Exception (500) org.apache.usergrid.rest.exceptions.UncaughtException: java.lang.NullPointerException at org.apache.usergrid.rest.exceptions.AbstractExceptionMapper.toResponse(AbstractExceptionMapper.java:59) at org.apache.usergrid.rest.exceptions.ThrowableMapper.toResponse(ThrowableMapper.java:37) at com.sun.jersey.spi.container.ContainerResponse.mapException(ContainerResponse.java:480) at com.sun.jersey.spi.container.ContainerResponse.mapMappableContainerException(ContainerResponse.java:417) at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1477) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:927) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:875) at com.sun.jersey.spi.container.servlet.ServletContainer.doFilter(ServletContainer.java:829) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.usergrid.rest.filters.ContentTypeFilter.doFilter(ContentTypeFilter.java:92) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:221) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)

at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException

at sun.reflect.GeneratedMethodAccessor115.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

... 38 more
04:44:47,717 ERROR AbstractExceptionMapper:106 - Server Error (500):

{"error":"uncaught","timestamp":1465872287717,"duration":0,"error_description":"Internal Server Error","exception":"org.apache.usergrid.rest.exceptions.UncaughtException","error_id":"f5752c99-31d9-11e6-b858-080027cf389a"}





On 16/06/16 22:43, Dave wrote:

Hi Petteri,

That's definitely a bug; Usergrid should never return HTTP 500 internal server error unless Cassandra or ElasticSearch is inaccessible. Is there a stack trace that goes along with that error?


Dave

On Tue, Jun 14, 2016 at 10:38 AM Petteri Sulonen <[email protected] <mailto:[email protected]>> wrote:


    Hi, everybody --

    I'm evaluating Usergrid for our cloud services, and am starting to
    come
    to grips with it. I have a question about error handling.

    I've noticed that the errors Usergrid returns seem somewhat
    inconsistent. For example, when attempting to GET an entity that
    doesn't
    exist directly from the collection (omitting org and app from path for
    clarity):

    GET /things/ferrari

    will return an error "entity_not_found", but attempting to GET the
    same
    entity through a connection where I "own" the entity:

    GET /users/me/owns/things/ferrari

    will return an "uncaught" error, with error_description "Internal
    Server
    Error."

    Is this intentional? I was expecting to get an "entity_not_found"
    error
    in both cases, as I think this would be a pretty common situation to
    have in a system where entities are created and deleted dynamically.

    (If /things/ferrari actually exists and I own it, both queries
    return it
    as expected, so that's cool.)

    If I've understood the design intent behind Usergrid correctly, these
    connections are extremely important because I can map permissions to
    them. Therefore it's not always possible to access objects directly
    under the collection, as the user may only have permission to access
    objects through a connection (e.g. "owns"). I like this scheme a lot,
    it's simple, intuitive, yet powerful.

    If I've misunderstood something, I would greatly appreciate being set
    straight.

    Thanks in advance,

    Petteri

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Re: Question about error handling

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