[rules-users] Unexpected, Unclear, Unperiodic error

abhinay_agarwal abhinay_agarwal at infosys.com
Wed May 15 01:10:25 EDT 2013 

I have a piece of code which builds the kbase, when i run it from my local
system as a java application with guvnor deployed, the code works fine.

When i try and access from the admin module, it calls the same method
readKnowledgeBase(), it works.

But, when i call the same piece of code
(the same method readKnowledgeBase()) from user module, no extra parameter,
the same changeset is being used, it throws the following exception.

java.lang.RuntimeException: KnowledgeAgent exception while trying to
deserialize KnowledgeDefinitionsPackage  
	at
org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:796)
	at
org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1103)
	at
org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:844)
	at
org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:684)
	at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:207)
	at
org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:186)
	at
com.infosys.fps.drools.adapter.DroolsAdapter.readKnowledgeBase(DroolsAdapter.java:58)
	at
com.infosys.fps.feecommission.helper.GoalFeeCommissionHelper.calculateFee(GoalFeeCommissionHelper.java:189)
	at
com.infosys.fps.feecommission.helper.GoalFeeCommissionHelper.processFee(GoalFeeCommissionHelper.java:167)
	at
com.infosys.fps.feecommission.helper.GoalFeeCommissionHelper.processFeeCalculation(GoalFeeCommissionHelper.java:126)
	at
com.infosys.fps.feecommission.helper.GoalFeeCommissionHelper.chargeGoalCreation(GoalFeeCommissionHelper.java:77)
	at
com.infosys.fps.feecommission.helper.GoalFeeCommissionHelper.chargeFee(GoalFeeCommissionHelper.java:55)
	at
com.infosys.fps.client.goal.service.EduGoalNeedsService.saveEducationNeeds(EduGoalNeedsService.java:932)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:318)
	at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
	at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
	at
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
	at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at $Proxy57.saveEducationNeeds(Unknown Source)
	at
com.infosys.fps.client.goal.delegate.EducationGoalDelegate.saveEducationNeeds(EducationGoalDelegate.java:217)
	at
com.infosys.fps.client.goal.controller.EduGoalNeedsController.saveAfterGoalId(EduGoalNeedsController.java:865)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
	at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
	at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
	at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
	at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
	at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
	at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
	at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
	at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
	at
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:789)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
	at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
	at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.session.ConcurrentSessionFilter.doFilter(ConcurrentSessionFilter.java:125)
	at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
	at
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
	at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
	at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
	at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198)
	at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
	at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
	at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: Server returned HTTP response code: 502 for
URL:
http://bbsrprd02:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/Goal%20Creation%20Charges/LATEST
	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown
Source)
	at org.drools.io.impl.UrlResource.grabStream(UrlResource.java:210)
	at org.drools.io.impl.UrlResource.getInputStream(UrlResource.java:146)
	at
org.drools.agent.impl.KnowledgeAgentImpl.createPackageFromResource(KnowledgeAgentImpl.java:759)
	... 85 more

Any idea about this weird behaviour ?

Thanks,
Abhinay



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