PH52912: Z/OSMF SERVER STARTUP WITH LIBERTY 22.0.0.3 SHOWS CWWKO1100E: THE SCHEDULEDEXECUTORSERVICE OSGI SERVICE IS NOT AVAILABLE CWWKO

APAR status

• Closed as program error.

Error description

• When starting up z/OSMF server with Liberty 22.0.0.3 and getting
  this error and warning in message.log
  
  CWWKO1100E: The ScheduledExecutorService OSGi service is not
  available
  CWWKO1102W: A Swagger object cannot be created for APIProvider
  SwaggerWebProvider
  
  
  product = z/OSMF 2.5.0 (wlp-1.0.62.cl220320220302-1100)
  wlp.install.dir = /usr/lpp/liberty_zos/IBM/22.0.0.3/
  
  With  trace.specification = *=warning:com.ibm.ws.rest.api.disco
  very.*=all:com.ibm.zoszmf.*=info:com.ibm.zoszmf.environment.ui=
  finer:com.ibm.zoszmf.util.*=all
  
  trace.log shows the following details:
  
  CWWKO1102W: A Swagger object cannot be created for APIProvider
  SwaggerWebProvider={contextRoot=nullmoduleURL=} from document
  type Swagger_20_JSON
  
  due to class java.lang.IllegalStateException : CWWKO1100E: The
  ScheduledExecutorService OSGi service is not available..
  
  
  CWWKO1100E: The ScheduledExecutorService OSGi service is not
  available.
  [12/12/22 17:35:36:557 GMT] 0000007e id=8922c2f3
  com.ibm.ws.rest.api.discovery.SwaggerWebProvider             >
  getContextRoot Entry
  
  [12/12/22 17:35:36:557 GMT] 0000007e id=8922c2f3
  com.ibm.ws.rest.api.discovery.SwaggerWebProvider             1
  Coudn't create context root URL:
  
  
  
  
  java.net.MalformedURLException: no protocol:
  
  	at java.net.URL.<init>(URL.java:622)
  	at java.net.URL.<init>(URL.java:519)
  	at java.net.URL.<init>(URL.java:468)
  	at com.ibm.ws.rest.api.discovery.SwaggerWebProvider.getContext
  Root(SwaggerWebProvider.java:340)
  	at com.ibm.ws.rest.api.discovery.SwaggerWebProvider.toString(S
  waggerWebProvider.java:301)
  	at java.text.MessageFormat.subformat(MessageFormat.java:1291)
  	at java.text.MessageFormat.format(MessageFormat.java:876)
  	at java.text.Format.format(Format.java:168)
  	at java.text.MessageFormat.format(MessageFormat.java:852)
  	at com.ibm.ws.logging.internal.impl.BaseTraceFormatter.formatM
  essage(BaseTraceFormatter.java:301)
  	at com.ibm.ws.logging.internal.impl.BaseTraceFormatter.formatM
  essage(BaseTraceFormatter.java:237)
  	at com.ibm.ws.logging.internal.impl.BaseTraceService.publishLo
  gRecord(BaseTraceService.java:1033)
  	at com.ibm.ws.logging.internal.impl.BaseTraceService.warning(B
  aseTraceService.java:759)
  	at com.ibm.websphere.ras.Tr.warning(Tr.java:797)
  	at com.ibm.ws.rest.api.discovery.APIProviderAggregator.process
  ApiProvider(APIProviderAggregator.java:675)
  	at com.ibm.ws.rest.api.discovery.APIProviderAggregator.setApiP
  roviderAction(APIProviderAggregator.java:450)
  	at com.ibm.ws.rest.api.discovery.APIProviderAggregator.setServ
  erStartedPhase2(APIProviderAggregator.java:390)
  	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of WebSphere Liberty              *
  ****************************************************************
  * PROBLEM DESCRIPTION: The Swagger document fails to generate  *
  *                      due to ScheduledExecutorService OSGi    *
  *                      service not yet available.              *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The Swagger document fails to generate due to
  java.lang.IllegalStateException : CWWKO1100E: The
  ScheduledExecutorService OSGi service is not available. The
  service takes some time to start and might not be available yet
  at
  the time when the API Discovery feature is scanning
  application(s)
  for the Swagger documentation.
  

Problem conclusion

• ScheduledExecutorService has been marked as a mandatory service
  and Swagger document generation will not proceed until the OSGI
  service becomes available.
  
  The fix for this APAR is targeted for inclusion in fix pack
  23.0.0.4. For more information, see 'Recommended Updates for
  WebSphere Application Server':
  https://www.ibm.com/support/pages/node/715553
  

Temporary fix

• Restart affected application after full server startup to trigge
  Swagger document rescan and generation.
  

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

  LIBERTY PROF -

• Fixed component ID

  5655W6514

Applicable component levels