Best way to set hop variables

[EricTonissen]

Within Pentaho I use .kettle/kettle.properties to set the : carte_server_name=etl01-kettle01. This way I could use ${carte_server_name} where I needed this variable. ChatGPT told me that HOP have some similar possibility to set this variable.
First tried .hop/hop.properties and second was within the json config file belonging to the --project parameter.
But both ways didn't work.

How can I solve this?

Btw I have some extra variables defined in here, so the "name" from the hop-server xml file is not enough

[bamaer]

You can set variables on (at least) the hop, project and environment levels.

Both the "where I needed this variable" and "didn't work" in your question don't give us very much to work with. Can you be more specific about where you need this variable and in what sense it didn't work?

[EricTonissen]

You can add user supplied parameters, but the 'Output to servlet' is not working.

[hansva]

Output to servlet has been replaced with Web Service functionality, those ui elements still have to be removed

[EricTonissen]

Can you please explain how. I certain need this. I use execPipeline to start a pipeline. This works. But how can I give a response on the request? Do you have an example?

[hansva]

There is an example in the documentation https://hop.apache.org//manual/latest/hop-server/web-service.html each webservice has its own endpoint making it clear to the users what to expect.

[EricTonissen]

Got this working. thnx.

Have to change the hop pipelines for that, but this are not that many.

Most of the work is that in Pentaho I used to write direct to the getServletPrintWriter() in all unhappy flows.
And now I have to redirect this flow to 1 transform.

The disadvantage I see of the HOP implementation is, that it is possible to change also the variables and not only the parameters defined in the Pipeline tab.
And I'm missing the possibility to define that I want <CR/LF> between the rows.