JR56941: THE ENDPOINT SERVICE, WHICH CALCULATES SELF-REFERENTIAL URLS, MIGHT APPLY THE CONFIGURED STRATEGIES IN AN INCORRECT ORDER

bpm.8570.cf2016.12.delta.repository
Downloading IBM Business Process Manager V8.5.7 Cumulative Fix 2016.12

APAR status

• Closed as program error.

Error description

• Evaluating the endpoint service configuration might return
  incorrect results. For example, if the URL attribute of a
  default scenario like EXTERNAL_CLIENT is specified, none of the
  strategies of a specific scenario run.
  

Local fix

Problem summary

• IBM BPM uses an internal component called "endpoint service" to
  calculate self-referential URLs, which are URLs that point to
  IBM BPM. Depending on use cases and the configuration, it is
  possible that different host and port combinations must be
  returned. Endpoint service configuration allows you to define a
  list of strategies to apply to calculate this host and port
  combination. For more information, see "Configuring IBM BPM
  endpoints to match your topology"
  (http://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.7/com.ibm
  .wbpm.imuc.ebpm.doc/topics/tsec_thirdpartyauthentication_endpoin
  tservice.html).
  
  The design of endpoint service is to first fully evaluate
  strategies associated with a specific scenario to allow fine
  grained control. Only if evaluation of the entire specific
  scenario does not result in a host port combination, should
  endpiont service evaluate a default scenario. See "Optional
  scenario keys" at
  http://www.ibm.com/support/knowledgecenter/SSFPJS_8.5.7/com.ibm.
  wbpm.imuc.ebpm.doc/topics/rcfgep_optscnkey.html for a list of
  scenarios and their corresponding default scenarios.
  
  The implementation of endpoint service, however, mixed all
  strategies of specific and default scenarios into a single
  evaluation, possibly resulting in incorrect sequencing.
  

Problem conclusion

• A fix will be included in IBM BPM V8.5.7 cumulative fix 2016.12
  that ensures the sequence of evaluating endpoint service
  scenarios is correct:
  
  If it's available, the BPMURL object for the specific scenario
  is fully evaluated by
  - returning the value of the url attribute, if it's set
  - invoking the listed strategy classes in sequence
  - returning the value of the virtualHost attribute, if it's set
  
  The sequence stops as soon as a URL is calculated.
  
  If no URL is determined, the same evaluation runs for the
  default scenario. If there is still no URL calculated, the
  defaultVH attribute of the current deployment environment is
  considered before reverting to the local server's host name and
  HTTPS port.
  
  To determine whether the later cumulative fix is available and
  download it if it is, complete the following steps on Fix
  Central:
  
  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 Text, enter 'cumulative fix' 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.
  
  
  PRODUCTS AFFECTED
  IBM Business Process Manager (BPM) Advanced
  IBM BPM Standard
  IBM BPM Express
  

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

  BPM STANDARD

• Fixed component ID

  5725C9500

Applicable component levels

• R857 PSY

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