Can we log from Sightly / HTL? | Community
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LeeKl1
Employee
Jan 22, 2017 12:10 AM UTC
Solved

Can we log from Sightly / HTL?

Looking at the list of HTL Global Objects in the documentation log is listed as a java-backed object backed by org.slf4j.Logger.

My question is, how can I use it?

I can't find any examples of it.

Thinking about it, this is a specific case of a more general question; How can I call methods and pass parameters to Java-backed objects?

I know it can be done when instantiating a Use-API object but that's not the pattern I'm after.

If it can't be done then it is hard to understand why the log and out objects are made available.

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    Feike_Visser1
    Feike_Visser1Accepted solution
    Employee
    Jan 23, 2017 9:10 AM UTC

    You can't specify arguments like ${log.info("hello")}

    You can only make log statements via Java or JS code.

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    4 replies

    RajaShankar
    RajaShankar
    New Participant
    Aug 26, 2017 4:07 AM UTC

    Adding to the Visser Statement

    In Javascript which we call via sightly script add logs like

    use(function() { log.error(“Log from Sightly JS Code");}

    In Java Code

    private final Logger log = LoggerFactory.getLogger(MyCustomClass.class);

    private void mymethod(){

    log.info("Event Path===>{}",evnt.getPath());

    }

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    smacdonald2008
    smacdonald2008
    Level 10
    Jan 23, 2017 1:48 PM UTC

    We will ensure that this fact is placed into the AEM docs. 

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    Feike_Visser1
    Feike_Visser1Accepted solution
    Employee
    Jan 23, 2017 9:10 AM UTC

    You can't specify arguments like ${log.info("hello")}

    You can only make log statements via Java or JS code.

    Translate
      smacdonald2008
      smacdonald2008
      Level 10
      Jan 22, 2017 12:29 AM UTC

      As stated in the docs - the log corresponds to the Java object. So you would use it in the front end like you would use it in the Java backend. ie

      Java:

      log.info("") ; 

      Front end : 

      "${log.info("")}

      I have only used logging in back end - but this should work according to the docs. Also HTL spec here: 

      https://github.com/Adobe-Marketing-Cloud/htl-spec/blob/master/SPECIFICATION.md

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