JBoss ON metric chart fails to display due to missing ViewChartFormPrepareAction classes

Solution Unverified - Updated -

Environment

  • Red Hat JBoss Operations Network (JON) 3.1.2
  • Viewing a resource metric graph or chart

Issue

  • Error looking at graphs
  • I am getting an error when trying to look at graphs from the metrics screen

  • There was a problem generating your page. Click here to see the complete stack trace:

    javax.servlet.jsp.JspException: ServletException in '/resource/common/monitor/visibility/ChartLayout.jsp': Could not initialize class org.rhq.enterprise.gui.legacy.action.resource.common.monitor.visibility.ViewChartFormPrepareAction
    at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:923)
    at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:462)
    at org.apache.jsp.portal.MainLayout_jsp._jspx_meth_tiles_005finsert_005f3(MainLayout_jsp.java:498)
    ....

  • Could not initialize class ViewChartFormPrepareAction is displayed in the user-interface (UI)

  • Receive the following Globally uncaught exception in the message center:

     com.google.gwt.core.client.JavaScriptException:(NotFoundError) 
 code: 8
 stack: Error: An attempt was made to reference a Node in a context where it does not exist.
    at Object.isc_LinkItem_setElementValue [as setElementValue] (http://jon-server:7080/coregui/org.rhq.enterprise.gui.coregui.CoreGUI/sc/modules/ISC_Forms.js:2476:191)
    at Object.isc_FormItem_setValue (http://jon-server:7080/coregui/org.rhq.enterprise.gui.coregui.CoreGUI/sc/modules/ISC_Forms.js:1298:40)
    at Object.isc_c_Class_invokeSuper [as invokeSuper] (http://jon-server:7080/coregui/org.rhq.enterprise.gui.coregui.CoreGUI/sc/modules/ISC_Core.js:284:162)
    at Object.isc_TextItem_setValue [as setValue] (http://jon-server:7080/coregui/org.rhq.enterprise.gui.coregui.CoreGUI/sc/modules/ISC_Forms.js:2018:9)
    ...

  • Resource metric chart fails to display

Resolution

The JBoss ON server installation on the file system has been corrupted and must be restored from a backup or re-installed.

Root Cause

The installation has become corrupted and files necessary for proper operation are missing. For example, one of the following files can not be found:

<RHQ_SERVER_HOME>/jbossas/server/default/deploy/rhq.ear/rhq-portal.war/WEB-INF/classes/org/rhq/enterprise/gui/legacy/action/resource/common/monitor/visibility/ViewChartFormPrepareAction$1.class
<RHQ_SERVER_HOME>/jbossas/server/default/deploy/rhq.ear/rhq-portal.war/WEB-INF/classes/org/rhq/enterprise/gui/legacy/action/resource/common/monitor/visibility/ViewChartFormPrepareAction$BaseMetricDisplayComparator.class

The cause of corruption can be due to a number of reasons including:

  • disk or file system failure
  • files have been accidentally deleted
  • another installation or version has been extracted over the top of the existing
  • the installation source was incomplete or corrupt

Diagnostic Steps

  • Does the error occur when selecting a metric chart from a resource's summary page?

    If the error is consistent when attempting to load one or more metric charts or graphs, this issue may apply.

  • Review the JBoss ON server log for an error similar to the following:

    ERROR [org.apache.struts.action.RequestProcessor] No action instance for path /resource/common/monitor/visibility/ViewChartFormPrepare could be created
java.lang.ClassNotFoundException: org.rhq.enterprise.gui.legacy.action.resource.common.monitor.visibility.ViewChartFormPrepareAction
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1385)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1229)
    at org.apache.struts.util.RequestUtils.applicationClass(RequestUtils.java:117)

  • Verify that all files and their checksums for the contents of the following directory match what is expected based on the version and patch level installed:

    <RHQ_SERVER_HOME>/jbossas/server/default/deploy/rhq.ear/rhq-portal.war/WEB-INF/classes/org/rhq/enterprise/gui/legacy/action/resource/common/monitor/visibility/

  • Verify that the following files exist:

    <RHQ_SERVER_HOME>/jbossas/server/default/deploy/rhq.ear/rhq-portal.war/WEB-INF/classes/org/rhq/enterprise/gui/legacy/action/resource/common/monitor/visibility/ViewChartFormPrepareAction$1.class
<RHQ_SERVER_HOME>/jbossas/server/default/deploy/rhq.ear/rhq-portal.war/WEB-INF/classes/org/rhq/enterprise/gui/legacy/action/resource/common/monitor/visibility/ViewChartFormPrepareAction$BaseMetricDisplayComparator.class

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