Setting References to none CIs in a Discovery Pattern

[Daniel Borkowi1]

Hi,

I tried to create an discovery pattern for a network device.

I read in a display value of the firmware_manufacturer via SNMP Query.

With this name I will set a reference to core_company in CI. If I write the display value in the field via pattern operation "Set Value", I get something like that:

<firmware_manufacturer display_value="">Aruba</firmware_manufacturer> after discovery.

But I want to have that: <firmware_manufacturer display_value="Aruba">sys_id_of_company</firmware_manufacturer>

How can I reach that in a pattern?

Greets, Daniel

[Patrick DeCarl1 · Accepted solution]

Daniel,

Check out the blog post I just put together.

Using Pre/Post Processing Scripts to handle reference fields via Discovery Pattern

I hope this solves your issue.

[Daniel Borkowi1]

I temporarily solved it with a before update Business Rule. This replaces values in reference fields if it does not contain sys_ids. But I would be happier if there was something within the pattern approach.

(function executeRule(current, previous /*null when async*/) {

      //Display an information message for each change to the record

      var gru = GlideScriptRecordUtil.get(current);

      var changedValues = gru.getChangedFieldNames(); //Get changed field values

      //Convert to JavaScript Arrays

      gs.include('j2js');

      changedValues = j2js(changedValues);

      //Process the changed fields

      for(var i = 0; i < changedValues.length; i++){

              var val = current[changedValues[i]];

              var elemDesc = val.getED();

              if(elemDesc.getInternalType() == "reference" ){

                      var value = val.getValue();

                      var regexp = /([0-9a-f]{32})/;

                      if(value.match(regexp) == null){

                              current.setValue(elemDesc.getName(),"");                            

                              current.setDisplayValue(elemDesc.getName(),value);

                      }

              }

      }

})(current, previous);

I set the value as display_value and after an update the system will replace the reference correctly with the sys_id.

Is nobody here who knows a better approach within the patterns self?

[Patrick DeCarl1]

Hi Daniel,

What I have been told by SN developers, you can use either a post or pre sensor script. Pre is to mod the payload before record gets submitted to DB, Post is to update record after its been submitted to DB.

Give me a few hours and Ill update my post with examples.

[Daniel Borkowi1]

Thanks for your answer Patrick. I'm looking forward for your examples.

[Patrick DeCarl1 · Accepted solution]

Daniel,

Check out the blog post I just put together.

Using Pre/Post Processing Scripts to handle reference fields via Discovery Pattern

I hope this solves your issue.