IBM Support

PH55109: NULLPOINTEREXCEPTION WHEN OBTAINING JSON OUTPUT FOR HPEL LOGS IN LOGVIEWER

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APAR status

  • Closed as program error.

Error description

  • When using the LogViewer to obtain the HPEL logging information
in JSON format, a NullPointerException is encountered.


The error can occur when additional trace strings are set in
the HPEL configuration.


The NullPointerException may look similar to the following:

Caused by: java.lang.NullPointerException
	at java.util.regex.Matcher.getTextLength(Matcher.java:1294)
	at java.util.regex.Matcher.reset(Matcher.java:320)
	at java.util.regex.Matcher.<init>(Matcher.java:240)
	at java.util.regex.Pattern.matcher(Pattern.java:1104)
	at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.par
seMessageId(HpelJsonFormatter.java:199)
	at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.jso
nifyTraceAndMessage(HpelJsonFormatter.java:142)
	at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.for
matRecord(HpelJsonFormatter.java:98)
	at com.ibm.websphere.logging.hpel.reader.HpelFormatter.formatR
ecord(HpelFormatter.java:514)
	at com.ibm.ws.logging.hpel.viewer.LogViewer.displayRecords(Log
Viewer.java:830)
	at com.ibm.ws.logging.hpel.viewer.LogViewer.execute(LogViewer.
java:440)
	at com.ibm.ws.logging.hpel.viewer.LogViewer.execute(LogViewer.
java:347)
	at com.ibm.ws.logging.hpel.viewer.LogViewer.main(LogViewer.jav
a:192)

Local fix

  • Remove additional trace strings in HPEL configuration one at a
time to see if the NullPointerException re-occurs.

Problem summary

  • ****************************************************************
* USERS AFFECTED:  All users of IBM WebSphere Application      *
*                  Server                                      *
****************************************************************
* PROBLEM DESCRIPTION: NullPointerException when using JSON    *
*                      format logging with HPEL                *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
When using the LogViewer to obtain the HPEL logging information
in JSON format, a NullPointerException is encountered.
The error can occur when additional trace strings are set in
the HPEL configuration.
The NullPointerException may look similar to the following:
Caused by: java.lang.NullPointerException
at java.util.regex.Matcher.getTextLength(Matcher.java:1294)
at java.util.regex.Matcher.reset(Matcher.java:320)
at java.util.regex.Matcher.<init>(Matcher.java:240)
at java.util.regex.Pattern.matcher(Pattern.java:1104)
at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.par
seMessageId(HpelJsonFormatter.java:199)
at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.jso
nifyTraceAndMessage(HpelJsonFormatter.java:142)
at com.ibm.websphere.logging.hpel.reader.HpelJsonFormatter.for
matRecord(HpelJsonFormatter.java:98)
at com.ibm.websphere.logging.hpel.reader.HpelFormatter.formatR
ecord(HpelFormatter.java:514)
at com.ibm.ws.logging.hpel.viewer.LogViewer.displayRecords(Log
Viewer.java:830)
at com.ibm.ws.logging.hpel.viewer.LogViewer.execute(LogViewer.
java:440)
at com.ibm.ws.logging.hpel.viewer.LogViewer.execute(LogViewer.
java:347)
at com.ibm.ws.logging.hpel.viewer.LogViewer.main(LogViewer.jav
a:192)

Problem conclusion

  • When the JSON log is sent, we attempt to parse through the
JSON to
find the messageID field. If that JSON log is null, then an
NPE is
thrown when trying to parse through the null message. A null
check
has been added to address when a null log is sent.

The fix for this APAR is targeted for inclusion in fix
pack 8.5.5.25 and 9.0.5.18. For more information, see
'Recommended Updates for WebSphere Application Server':
https://www.ibm.com/support/pages/node/715553

Temporary fix

  • 



Comments


    

  • 



APAR Information




    

  • APAR number
    PH55109
    • 

  • Reported component name
    WEBSPHERE APP S
    • 

  • Reported component ID
    5724J0800
    • 

  • Reported release
    900
    • 

  • Status
    CLOSED  PER
    • 

  • PE
    NoPE
    • 

  • HIPER
    NoHIPER
    • 

  • Special Attention
    NoSpecatt / Xsystem
    • 

  • Submitted date
    2023-06-12
    • 

  • Closed date
    2023-09-11
    • 

  • Last modified date
    2023-09-11
    • 





    

  • 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
    WEBSPHERE APP S
    • 

  • Fixed component ID
    5724J0800
    • 



Applicable component levels


    








      
              
                            

              

              [{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Line of Business":{"code":"LOB45","label":"Automation"}}]
              

                          

          
 
        

      

    

      

        

          

            
Document Information


            

            


                        

            Modified date:
            

            12 September 2023
            

            
                      

        


        

        


      

    

  



    

  

  
    
            

          
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