Debugging Sling/Sightly server-side JavaScript

Question

I am trying to debug JavaScript that is stored in the JCR and run on the server with Rhino, by the Sightly templating language's JavaScript UseAPI.

As per the instructions provided in sling.properties:

# To enable the current server side debugging in the Rhino interpreter
# set the org.apache.sling.scripting.javascript.debug property to true.
# This will open a Swing window for Rhino JavaScript debugging on the
# server platform.

When I do this, I can see the Swing window for Rhino. However, if I try to set a breakpoint on a JavaScript file, or trigger the debugger by adding a debugger; line, the debugger breaks but does not show me the correct file.

Similarly, if I select 'Break on function enter' from the Debug menu, the debugger will break but using 'Step Into/Over/Out' seems to jump to random points in the code.

Is this working for anyone else? I'm using v2.0.14 of org.apache.sling.scripting.javascript which seems to be the latest.

How do you set org.apache.sling.scripting.javascript.debug to true? Is that in the web console? Thanks. — Sid, Jan 06 '16 at 22:40
you need to edit the sling.properties file for your AEM instance — Alasdair McLeay, Jan 07 '16 at 10:05
Unfortunately not, I spoke to Adobe a few times too and it didn't seem like something they were doing themselves either, or something they planned to add support for. — Alasdair McLeay, Mar 30 '16 at 09:33

score 1 · Answer 1 · answered Apr 04 '16 at 01:13

1

As you already alluded to in one of your comments, it appears this feature hasn't actually been implemented.

Here on the main Sightly docs they list the following con for using the javascript Use API over the Java Use API:

no debugger (yet)

answered Apr 04 '16 at 01:13

Jordan Shurmer

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score 0 · Answer 2 · answered Aug 30 '18 at 05:40

Since the rhino script finally compiles to a java class, you can add java.lang.System.out.println("Resource path: " + resource.getPath()) statements and log values for debugging purpose, you should see the values written to crx-quickstart/logs/stdout.log

Debugging Sling/Sightly server-side JavaScript

2 Answers2