SA-37030

Summary

On an application restart or start, a file listener starts and begins processing before dependent application code is fully loaded, if files are contained within target folder.
This results in NullPointerExceptions in the code and potentially unhandled or dealt with code, It leaves with emails marked as read and no processes created.

Error Messages

2017-03-18 18:05:31,170 [ EMAIL-Thread-27] [ STANDARD] [ABCApp:04.22.01] ( internal.services.ServiceAPI) ERROR EMAIL.WHDEmailCaseListenerInfoGrupowe.Listener|from([email protected])|sub(Prośba o z)|Email|EmailDefault|Work-|CreateEmaiCaselFlowInfoGrupowe|REQUESTOR emailuser - Service Exception:
com.pega.pegarules.pub.PRRuntimeError: PRRuntimeError
at com.pega.pegarules.session.internal.mgmt.base.ThreadRunner.runActivitiesAlt(ThreadRunner.java:712)
at com.pega.pegarules.session.internal.mgmt.PRThreadImpl.runActivitiesAlt(PRThreadImpl.java:461)
at com.pega.pegarules.integration.engine.internal.services.ServiceAPI.runActivities(ServiceAPI.java:1881)
at com.pega.pegarules.session.external.engineinterface.service.EngineAPI.processRequestInner(EngineAPI.java:385)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.performTargetActionWithLock(PRSessionProviderImpl.java:1270)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1008)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:841)
at com.pega.pegarules.session.external.engineinterface.service.EngineAPI.processRequest(EngineAPI.java:331)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.handleStandardRequest(EmailListener.java:3601)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.handleRequestContents(EmailListener.java:3967)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.handleRequest(EmailListener.java:3835)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.emailProcess(EmailListener.java:3422)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.oneIteration(EmailListener.java:2731)
at com.pega.pegarules.integration.engine.internal.services.email.EmailListener.run_(EmailListener.java:2590)
at com.pega.pegarules.integration.engine.internal.services.listener.ServiceListenerBaseImpl.run(ServiceListenerBaseImpl.java:453)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at com.pega.pegarules.session.internal.mgmt.base.RequestorChildren.queueBatchActivity(RequestorChildren.java:216)
at com.pega.pegarules.session.internal.mgmt.base.RequestorChildren.queueBatchActivity(RequestorChildren.java:174)
at com.pega.pegarules.session.internal.mgmt.PRRequestorImpl.queueBatchActivity(PRRequestorImpl.java:1125)
at com.pega.pegarules.exec.internal.declare.infengine.ChainingEngineUtilImpl.runActivity(ChainingEngineUtilImpl.java:283)
at com.pega.pegarules.exec.internal.declare.infengine.TriggerImpl.evaluateNetworks(TriggerImpl.java:307)
at com.pega.pegarules.data.internal.access.DatabaseImpl.performTriggers(DatabaseImpl.java:12805)
at com.pega.pegarules.data.internal.access.DatabaseImpl.performCommitTriggers(DatabaseImpl.java:2799)
at com.pega.pegarules.data.internal.access.DatabaseImpl.attemptToProcessUpdates(DatabaseImpl.java:2609)
at com.pega.pegarules.data.internal.access.DatabaseImpl.processUpdates(DatabaseImpl.java:2308)
at com.pega.pegarules.data.internal.access.DatabaseImpl.commit(DatabaseImpl.java:2047)
at com.pegarules.generated.activity.ra_action_commitwitherrorhandling_6c6c3f21ead5ea2a97cdc30349237e37.step4_circum0

Steps to Reproduce

Exceptions are noticed on restart of the server instance while there are email items in the queue Email Listener's queue

Root Cause

A defect in Pegasystems’ code or rules:
EmailListener was not performing the check for the node state before processing the emails from the email listener's queue

Resolution

Deploy HFix-33777