JR65005: DEBUG FAILS TO STEP INTO NESTED SERVICES FLOW IN IBM CLOUD PAK FOR BUSINESS AUTOMATION

workflow.21031.delta.repository

APAR status

• Closed as program error.

Error description

• If you create a nested Service Flow for a Workflow in Process
  designer and you attempt to debug and step into that nested
  Service Flow, nothing will happen. If you look at an HTTP
  capture you would see a HTTP 500 error occurring for this URL:
  <hostname>/bas/rest/bpm/wle/v1/playback/emulation/service?action
  resume&mode=debug...
  
  In addition, if you look at the BAStudio pod logs you will see
  the following exception occurring:
  [2022-05-27T17:55:51.157+0000] 00000d15
  com.ibm.bpm.rest.filter.BPMRestServletRequestWrapper        E
  !!This method should not be invoked, especially in a Liberty
  environment. Change the calling code to accept the request body
  as a parameter to the REST method implementation.!!
  java.lang.IllegalStateException: SRVE0779E: The InputStream
  object for this response has already been obtained. This is an
  application error.
     at
  com.ibm.ws.webcontainer.srt.SRTServletRequest.getReader(SRTServl
  etRequest.java:1204)
     at
  javax.servlet.ServletRequestWrapper.getReader(ServletRequestWrap
  per.java:274)
     at
  com.ibm.bpm.rest.filter.BPMRestServletRequestWrapper.getReader(B
  PMRestServletRequestWrapper.java:757)
     at
  com.ibm.ws.jaxrs20.server.JaxRsHttpServletRequestAdapter.getRead
  er(JaxRsHttpServletRequestAdapter.java:364)
     at
  javax.servlet.ServletRequestWrapper.getReader(ServletRequestWrap
  per.java:274)
     at
  com.ibm.bpm.rest.impl.playback.EmulateServicePlaybackResourceImp
  l.createEmulateServicePlayback(EmulateServicePlaybackResourceImp
  l.java:174)
     at
  com.ibm.bpm.rest.impl.playback.EmulateServicePlaybackResource.cr
  eateEmulateServicePlayback(EmulateServicePlaybackResource.java:1
  18)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
  Method)
     at
  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessor
  Impl.java:90)
     at
  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethod
  AccessorImpl.java:55)
     at java.lang.reflect.Method.invoke(Method.java:508)
     at
  com.ibm.ws.jaxrs20.server.LibertyJaxRsServerFactoryBean.performI
  nvocation(LibertyJaxRsServerFactoryBean.java:656)
  

Local fix

Problem summary

• BPMRestServletRequestWrapper does not support post data in rest
  APIs for IBM WebSphere Liberty.
  
  PRODUCT AFFECTED
  IBM Cloud Pak for Business Automation
  

Problem conclusion

• A fix is available or will be available that uses query
  parameters instead of post data for the rest API.
  

Temporary fix

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

  CLOUD PAK FOR A

• Fixed component ID

  5737I2300

Applicable component levels