[jboss-jira] [JBoss JIRA] (AS7-4770) read-attribute on servelt causes NPE

[Stan Silvert (JIRA)]

    [ https://issues.jboss.org/browse/AS7-4770?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12692241#comment-12692241 ] 

Stan Silvert commented on AS7-4770:
-----------------------------------

I have some more info on this.  If you do a read-resource-description it does not match what you actually get back when you do a read-resource.  I think the metadata needs to be fixed.

{noformat}
/deployment=InjectionTest.war/subsystem=web/servlet=*/:read-resource-description(recursive=true)
{
    "outcome" => "success",
    "result" => [{
        "address" => [
            ("deployment" => "InjectionTest.war"),
            ("subsystem" => "web"),
            ("servlet" => "*")
        ],
        "outcome" => "success",
        "result" => {
            "description" => "Runtime information about the servlets in the deployment.",
            "attributes" => {
                "min-time" => {
                    "type" => LONG,
                    "description" => "Minimum processing time of a request",
                    "expressions-allowed" => false,
                    "nillable" => true,
                    "access-type" => "metric",
                    "storage" => "runtime"
                },
                "load-time" => {
                    "type" => LONG,
                    "description" => "Load time",
                    "expressions-allowed" => false,
                    "nillable" => true,
                    "access-type" => "metric",
                    "storage" => "runtime"
                },
                "processingTime" => {
                    "type" => LONG,
                    "description" => "Total execution time of the servlet's service method",
                    "expressions-allowed" => false,
                    "nillable" => true,
                    "access-type" => "metric",
                    "storage" => "runtime"
                },
                "maxTime" => {
                    "type" => LONG,
                    "description" => "Maximum processing time of a request",
                    "expressions-allowed" => false,
                    "nillable" => true,
                    "access-type" => "metric",
                    "storage" => "runtime"
                },
                "requestCount" => {
                    "type" => INT,
                    "description" => "Number of requests processed by this servlet",
                    "expressions-allowed" => false,
                    "nillable" => true,
                    "access-type" => "metric",
                    "storage" => "runtime"
                }
            },
            "operations" => undefined,
            "children" => {}
        }
    }]
}
{noformat}


Note that servlet-class and servlet-name appear in read-resource, but they are not described as attributes in read-resource-description above.
{noformat}
/deployment=InjectionTest.war/subsystem=web/servlet=*/:read-resource(recursive=true)
{
    "outcome" => "success",
    "result" => [{
        "address" => [
            ("deployment" => "InjectionTest.war"),
            ("subsystem" => "web"),
            ("servlet" => "Faces_Servlet")
        ],
        "outcome" => "success",
        "result" => {
            "servlet-class" => "javax.faces.webapp.FacesServlet",
            "servlet-name" => "Faces Servlet"
        }
    }]
}
{noformat}
                
> read-attribute on servelt causes NPE
> ------------------------------------
>
>                 Key: AS7-4770
>                 URL: https://issues.jboss.org/browse/AS7-4770
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: Web
>    Affects Versions: 7.2.0.Alpha1
>            Reporter: Stan Silvert
>            Assignee: Tomaz Cerar
>         Attachments: InjectionTest.war
>
>
> Attempt to read any attribute exposed by WebDeploymentServletDefinition results in NPE:
> On CLI
> {noformat}
> /deployment=InjectionTest.war/subsystem=web/servlet=Faces_Servlet/:read-attribute(name=min-time)
> {
>     "outcome" => "failed",
>     "failure-description" => "JBAS014749: Operation handler failed: null",
>     "rolled-back" => true
> }
> {noformat}
> On server:
> {noformat}
> 12:32:49,861 ERROR [org.jboss.as.controller.management-operation] (management-handler-thread - 17) JBAS014612: Operation ("read-attribute") failed - address: ([
>     ("deployment" => "InjectionTest.war"),
>     ("subsystem" => "web"),
>     ("servlet" => "Faces_Servlet")
> ]): java.lang.NullPointerException
>         at org.jboss.as.web.WebDeploymentServletDefinition$3.handle(WebDeploymentServletDefinition.java:57) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
>         at org.jboss.as.web.WebDeploymentServletDefinition$AbstractMetricsHandler$1.execute(WebDeploymentServletDefinition.java:97) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.ja
> r:7.2.0.Alpha1-SNAPSHOT]
>         at org.jboss.as.controller.AbstractOperationContext.executeStep(AbstractOperationContext.java:397) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNA
> PSHOT]
>         at org.jboss.as.controller.AbstractOperationContext.doCompleteStep(AbstractOperationContext.java:284) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-
> SNAPSHOT]
>         at org.jboss.as.controller.AbstractOperationContext.completeStep(AbstractOperationContext.java:211) [jboss-as-controller-7.2.0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SN
> APSHOT]
>         at org.jboss.as.web.WebDeploymentServletDefinition$AbstractMetricsHandler.execute(WebDeploymentServletDefinition.java:103) [jboss-as-web-7.2.0.Alpha1-SNAPSHOT.jar
> :7.2.0.Alpha1-SNAPSHOT]
>         at org.jboss.as.controller.operations.global.GlobalOperationHandlers$ReadAttributeHandler.doExecute(GlobalOperationHandlers.java:465) [jboss-as-controller-7.2.0.A
> lpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
>         at org.jboss.as.controller.operations.global.GlobalOperationHandlers$AbstractMultiTargetHandler.execute(GlobalOperationHandlers.java:997) [jboss-as-controller-7.2
> .0.Alpha1-SNAPSHOT.jar:7.2.0.Alpha1-SNAPSHOT]
> {noformat}

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