Can we log from Sightly / HTL? | Community
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Adobe Employee
LeeKl1Adobe Employee
Adobe Employee
January 22, 2017
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Can we log from Sightly / HTL?

  • January 22, 2017
  • 4 replies
  • 4049 views

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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    Best answer by Feike_Visser1

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

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

    4 replies

    smacdonald2008
    smacdonald2008
    Level 10
    January 22, 2017

    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

    Feike_Visser1
    Adobe Employee
    Feike_Visser1Adobe EmployeeAccepted solution
    Adobe Employee
    January 23, 2017

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

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

      smacdonald2008
      smacdonald2008
      Level 10
      January 23, 2017

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

      RajaShankar
      Community Advisor
      RajaShankarCommunity Advisor
      Community Advisor
      August 26, 2017

      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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