JR52494: PROCESS ADMIN CONSOLE AND GROUP REST API ALLOWS CIRCULAR MEMBERSHIP TO BE CREATED

8.5.5.0-WS-BPM-IFJR52494
8.5.6.0-WS-BPM-IFJR52494
bpm.8560.cf1.delta.repository.1
bpm.8560.cf1.delta.repository.2
Version 8.5 Refresh Pack 7 for the IBM Business Process Manager products

APAR status

• Closed as program error.

Error description

• When you use the group management capability of the Process
  Admin Console, a JavaScript API, or a REST API to add group
  memberships, IBM Business Process Manager (BPM) does not verify
  that there are no circular references. As a result, task
  assignments fail with an StackOverflowError when a circular
  group membership is found.
  
     These are the errors that are logged
  CWLLG2015E: An unexpected runtime exception occurred. See
  exception for
  more details. Error: Wrapped
  com.lombardisoftware.client.delegate.BusinessDelegateException:
  java.lang.StackOverflowError.org.mozilla.javascript.WrappedExcep
  tion:
  Wrapped
  com.lombardisoftware.client.delegate.BusinessDelegateException:j
  a
  va.lang.StackOverflowError
  
  CWLLG0594E: An exception occurred while initializing the
  runnable
  thread. Error:
  com.lombardisoftware.component.common.workflow.WorkflowProcessIt
  emExcept
  ion: Runtime error in script ("Process: 'Get NamesSlids from
  role DAS'
  ProcessItem: 'get usernames and full names for all in rolename'
  Type:'ITEM'" 0:0).Internal Script
  error:com.lombardisoftware.client.delegate.BusinessDelegateExcep
  tion:java.lang.StackOverflowError Script (line 0):
     1 :
     2 : tw.local.userIds = new tw.object.listOf.String();
  .
  Caused by: [TeamworksException name='Process: 'Get Names from
  role' ProcessItem: 'get usernames and full names for all in
  rolename'
  Type: 'ITEM'', message='Internal Script
  error:com.lombardisoftware.client.delegate.BusinessDelegateExcep
  tion:java.lang.StackOverflowError', line=0, pos=0
  nested=<none>]
  
     This shows the error logged with the StackOverflowError
  [1/27/15 15:08:51:087 EST] 00000268 wle           E
  CWLLG2229E: An
  exception occurred in an EJB call.  Error: null
                                   java.lang.StackOverflowError
   at
  java.text.SimpleDateFormat.zeroPaddingNumber(SimpleDateFormat.ja
  va:1220)
   at
  java.text.SimpleDateFormat.subFormat(SimpleDateFormat.java:1159)
   at java.text.SimpleDateFormat.format(SimpleDateFormat.java:916)
   at java.text.SimpleDateFormat.format(SimpleDateFormat.java:886)
   at
  com.ibm.ws.logging.TraceLogFormatter.formatTimeAndThread(TraceLo
  gFormatt
  er.java:368)
   at
  com.ibm.ws.logging.TraceLogFormatter.formatHeaderBasic(TraceLogF
  ormatter
  .java:470)
   at
  com.ibm.ws.logging.TraceLogFormatter.formatBasic(TraceLogFormatt
  er.java:
  201)
   at com.ibm.ejs.ras.TraceLogger.doLog(TraceLogger.java:365)
   at
  com.ibm.ejs.ras.TraceLogger.processEvent(TraceLogger.java:354)
   at
  com.ibm.ws.logging.WsHandlerWrapper.publish(WsHandlerWrapper.jav
  a:43)
   at java.util.logging.Logger.log(Logger.java:1281)
   at
  com.ibm.ws.logging.WsLogger.deliverOrBuffer(WsLogger.java:383)
   at com.ibm.ws.logging.WsLogger.log(WsLogger.java:361)
   at com.ibm.ws.logging.WsLogger.logp(WsLogger.java:599)
   at com.ibm.ws.logging.WsLogger.entering(WsLogger.java:727)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:548)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:580)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:580)
  
  
     This is the java stack of the StackOverflowError.
  [11/14/14 20:03:06:338 CLST]     FFDC
  Exception:java.lang.StackOverflowError
  SourceId:com.ibm.ws.uow.UOWManagerImpl.runUnderNewUOW
  ProbeId:944
  Reporter:com.ibm.ws.uow.UOWManagerImpl@4e179214
  java.lang.StackOverflowError
   at java.util.HashMap.hash(HashMap.java:136)
   at java.util.HashMap.getEntry(HashMap.java:587)
   at java.util.HashMap.get(HashMap.java:575)
   at
  com.lombardisoftware.core.cache.GenericCache.getCacheData(Generi
  cCache.j
  ava:161)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:566)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
   at
  com.lombardisoftware.server.core.cache.GroupMemberCacheObject.is
  Outdated
  (GroupMemberCacheObject.java:590)
  

Local fix

Problem summary

• You may model circular group memberships in the following ways:
  
  - Using the Process Admin Console, the User Management > Group
   Management tab and click Add Groups.
  
  - Using the Group Resource of the REST API. See ?REST interface
   for BPD-related resources - Group Resource - PUT Method? at
  https://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.5/com.ibm
   .wbpm.ref.doc/rest/bpmrest/rest_bpm_wle_v1_group_groupnameorid_
   put.htm?lang=en.
  
  - Using tw.system.org.findRoleByName.addRoles of the JavaScript
   API. See ?JavaScript API for IBM Process Designer? at
  https://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.5/com.ibm
   .wbpm.ref.doc/ae/doc/JSAPI.html?lang=en.
  
  If you created a circular group reference in one of these ways
  you, do not get an immediate exception. When a task is created
  and the associated group is resolved, you see a
  StackOverflowException similar to the following exception if the
  group contains a circular group membership:
  
  FFDC Exception:java.lang.StackOverflowError
  SourceId:com.ibm.ws.uow.UOWManagerImpl.runUnderNewUOW
  ProbeId:944
  Reporter:com.ibm.ws.uow.UOWManagerImpl@4e179214
  java.lang.StackOverflowError
  at java.util.HashMap.hash(HashMap.java:136)
  at java.util.HashMap.getEntry(HashMap.java:587)
  at java.util.HashMap.get(HashMap.java:575)
  at com.lombardisoftware.core.cache.GenericCache.getCacheData
    (GenericCache.java:161)
  at com.lombardisoftware.server.core.cache.
    GroupMemberCacheObject.isOutdated
    (GroupMemberCacheObject.java:566)
  at com.lombardisoftware.server.core.cache.
    GroupMemberCacheObject.isOutdated
    (GroupMemberCacheObject.java:590)
  

Problem conclusion

• A fix is/will be available that checks whether a group
  membership cycle is created when members are added to a group.
  If a group membership cycle is detected, you see a specific
  error in the Process Admin Console and the new member
  is not added to the group.
  
  On Fix Central (http://www.ibm.com/support/fixcentral), search
  for JR52494:
  
  1. Select IBM Business Process Manager with your edition from
    the product selector, the installed version to the fix pack
    level, and your platform, and then click Continue.
  
  2. Select APAR or SPR, enter JR52494, and click Continue.
  
  When you download fix packages, ensure that you also download
  the readme file for each fix. Review each readme file for
  additional installation instructions and information about the
  fix.
  

Temporary fix

• Not applicable
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  BPM STANDARD

• Fixed component ID

  5725C9500

Applicable component levels