JBoss ON is unable to use JRuby alert script

Solution Unverified - Updated

Environment

  • Red Hat JBoss Operations Network (ON) 3.3
  • JRuby script (rb) placed in <RHQ_SERVER_HOME>/alert-scripts

Issue

  • Cannot get JRuby CLI scripts to work
  • No output or errors from the JRuby alert script

Resolution

JRuby alert scripts are unsupported and not available for use with JBoss ON.

Root Cause

The JBoss ON servers installation includes a directory named alert-scripts. This directory is intended for JBoss ON command-line interface (CLI) scripts that can be used with the Alert:CLI server plug-in.

This directory also includes a README.txt and example.rb file. Neither of these files should exist. This issue has been captured in This content is not included.Red Hat Bugzilla 1234651 and will be addressed in a future release.

The README.txt and example.rb files come from the upstream Alert:Scriptlang server plug-in. This plug-in is not supported with JBoss ON. Furthermore, the plug-in is not built or included in the upstream RHQ Project. These example files were accidentally included in the core server build.

Diagnostic Steps

  • Add new logger org.rhq.enterprise.server.alert and set it to DEBUG. Then repeat the test and the server.log file will show:

    DEBUG [org.rhq.enterprise.server.alert.AlertManagerBean] (Thread-7 (HornetQ-client-global-threads-679970177)) Matched alert condition log for alertId=10311: org.rhq.core.domain.alert.AlertConditionLog[ id=10321, value=706.0, org.rhq.core.domain.alert.AlertCondition[ id=10051, category=Measurement Value Change, name=Number of management requests per Minute, comparator='null', threshold=null, option=null ] ]
DEBUG [org.rhq.enterprise.server.alert.engine.jms.AlertConditionConsumerBean] (Thread-7 (HornetQ-client-global-threads-679970177)) Checking for cache reload due to alert firing
DEBUG [org.rhq.enterprise.server.alert.AlertManagerBean] (Thread-7 (HornetQ-client-global-threads-679970177)) Sending alert notifications for Alert[id=10311]...
DEBUG [org.rhq.enterprise.server.alert.AlertManagerBean] (Thread-7 (HornetQ-client-global-threads-679970177)) SenderResult{state=FAILURE, summary=null, successMessages=[], failureMessages=[Could not determine the script engine to use based on the script file extension 'rb'. Only the following extensions are currently supported: [py, js]]}
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