question List existing Nifi templates using REST API in Archives of Support Questions (Read Only)

List existing Nifi templates using REST API

gopal_unnikrish — Fri, 16 Sep 2022 12:29:02 GMT

Hello,

I am trying to write a python script to upload and instantiate templates in Nifi 1.3 using rest API.

I am able to upload the template using upload API /nifi-api/process-groups/root/templates/upload.

But I don't see a way to list all existing templates so that I can update or delete/reload templates that are already upload. I see some references to API GET /nifi-api/controller/templates in forums, but that doesn't work any more on Nifi 1.3.

Any suggestions on the write set of API calls to find and update existing Nifi templates are appreciated.

Thanks

Gopal

Re: List existing Nifi templates using REST API

opreaadrian1 — Fri, 03 Nov 2017 05:44:29 GMT

Hi,

Use This

- this lists the resources in the server and formats the templates ids into a api call.

note: jq -- formats the output to be readable

curl -v -X GET http://NiFiServerIP:Port/nifi-api/resources | jq '.' | grep '"/templates/' | awk '{print $2}' | sed 's/\"//g'| sed 's/\/templates//g' | awk '{print "curl -v -X GET http://NiFiServerIP:Port/nifi-api/templates"$1"/download"}'

The output should be a Rest Api call:

curl -v -X GET http://NiFiServerIP:Port/nifi-api/templates/885dc02e-cb13-429c-bdvd-9a4e0cbe1212b/download

In the future if you don`t see how is done in the docs you can always SPY on the nifi-app.log, it gives you what you need to know.

Hope this helped.

Re: List existing Nifi templates using REST API

gopal_unnikrish — Fri, 03 Nov 2017 21:00:22 GMT

That works perfectly! Thanks!