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From "Radu Cotescu (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (SLING-7685) data-sly-resource throws RecursionTooDeepException when used with dynamic variables that are null / empty
Date Fri, 22 Jun 2018 14:13:00 GMT

     [ https://issues.apache.org/jira/browse/SLING-7685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Radu Cotescu closed SLING-7685.
-------------------------------

> data-sly-resource throws RecursionTooDeepException when used with dynamic variables that
are null / empty
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: SLING-7685
>                 URL: https://issues.apache.org/jira/browse/SLING-7685
>             Project: Sling
>          Issue Type: Bug
>          Components: Scripting
>            Reporter: Sagar Sane
>            Assignee: Radu Cotescu
>            Priority: Major
>             Fix For: Scripting HTL Engine 1.0.54-1.4.0, Scripting HTL Testing 1.0.10-1.4.0,
Scripting HTL Testing Content 1.0.10-1.4.0
>
>
> I am on AEM 6.3.1.2.
> If I use *data-sly-resource* w/ dynamic variable which is null or empty, I get a *RecursionTooDeepException* runtime. The
stack looks something like this (redacting project specific stuff): 
> {code:java}
> 2018-05-26 20:18:33,335 *ERROR* [0:0:0:0:0:0:0:1 [1527380309473] GET /content/<path>
HTTP/1.1] org.apache.sling.engine.impl.SlingRequestProcessorImpl service: Uncaught SlingException
> org.apache.sling.scripting.sightly.SightlyException: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.SlingException: Cannot get DefaultSlingScript:
org.apache.sling.api.SlingException: Cannot get DefaultSlingScript: org.apache.sling.api.SlingException:
Cannot get DefaultSlingScript: org.apache.sling.api.request.RecursionTooDeepException: /content/<path>
> at com.adobe.cq.sightly.WCMScriptHelper.includeScript(WCMScriptHelper.java:227)
> at com.adobe.cq.sightly.internal.extensions.IncludeExtension.call(IncludeExtension.java:73)
> at org.apache.sling.scripting.sightly.impl.engine.runtime.RenderContextImpl.call(RenderContextImpl.java:69)
> at  org.apache.sling.scripting.sightly.java.compiler.RenderUnit.render(RenderUnit.java:48)
> at org.apache.sling.scripting.sightly.impl.engine.SightlyCompiledScript.eval(SightlyCompiledScript.java:61)
> at org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:386)
> at org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:184)
> at org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:491)
> at org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:552)
> at org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:44)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:77)
> at com.adobe.acs.commons.wcm.impl.ComponentErrorHandlerImpl.doFilter(ComponentErrorHandlerImpl.java:217)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilterWithErrorHandling(WCMDebugFilter.java:192)
> at com.day.cq.wcm.core.impl.WCMDebugFilter.doFilter(WCMDebugFilter.java:159)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at org.apache.sling.dynamicinclude.IncludeTagFilter.doFilter(IncludeTagFilter.java:71)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at com.day.cq.wcm.core.impl.WCMDeveloperModeFilter.doFilter(WCMDeveloperModeFilter.java:119)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at com.day.cq.wcm.core.impl.WCMComponentFilter.doFilter(WCMComponentFilter.java:278)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at  org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at com.day.cq.personalization.impl.TargetComponentFilter.doFilter(TargetComponentFilter.java:96)
> at org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:68)
> at org.apache.sling.engine.impl.SlingRequestProcessorImpl.processComponent(SlingRequestProcessorImpl.java:282)
> at org.apache.sling.engine.impl.SlingRequestProcessorImpl.dispatchRequest(SlingRequestProcessorImpl.java:322)
> at org.apache.sling.engine.impl.request.SlingRequestDispatcher.dispatch(SlingRequestDispatcher.java:211)
> at org.apache.sling.engine.impl.request.SlingRequestDispatcher.include(SlingRequestDispatcher.java:104)
> at com.day.cq.wcm.core.impl.WCMComponentFilter$ForwardRequestDispatcher.include(WCMComponentFilter.java:516)
> at org.apache.jsp.libs.cq.Page.Page_jsp._jspService(Page_jsp.java:106)
> at org.apache.sling.scripting.jsp.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:725){code}
> It seems like the resource include implementation is scanning the page's whole resource
tree. I think the behavior is similar to what's mentioned in the thread [here|https://forums.adobe.com/message/9720147#9720147]
> I can get around this by putting a *data-sly-test* in the same sly tag as the *data-sly-resource*
tag. 
> (This is a follow up on discussion [here|https://twitter.com/sagarsane/status/999675314937778176])
> A simple way to reproduce this is to have a Sling Model like : 
> {code:java}
> package com.sling7685;
> import org.apache.sling.api.SlingHttpServletRequest;
> import org.apache.sling.api.resource.Resource;
> import org.apache.sling.models.annotations.DefaultInjectionStrategy;
> import org.apache.sling.models.annotations.Model;
> @Model(adaptables = {SlingHttpServletRequest.class, Resource.class},
>         defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL)
> public class ReproduceSling7685 {
>     private String testVariable;
>     public String getTestVariable() {
>         return testVariable;
>     }
> }
> {code}
> Then the HTL script could be something like :
> {code:html}
> <sly data-sly-use.model="com.sling7685.ReproduceSling7685"></sly>
> <sly data-sly-resource="${model.testVariable @ wcmmode='disabled'}"></sly>
> {code}
> Please let me know if I should add any more details. 
> Thanks!



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