question Re: Truoble with creating templates and processors using api in Support Questions

Truoble with creating templates and processors using api

yjohn9691 — Wed, 02 Jan 2019 04:50:11 GMT

Hi there!

I set up standalone NIFI 1.8.0 and now try to communicate with it using node through his api.

I am trying to deploy template which already exist on nifi (made it through GUI) :
POST to "www.localhost:8080/nifi-api/process-groups/{THE_TEMPLATE_ID}/template-instance" but recieving error 415 status : media type not supported.
I cant figure out what is worng with the request.
I did not set up any authentication, but still when i tried to make any change like creating processor i am getting error 405 : not allowed. How is that possible?

love for some help,

john

Re: Truoble with creating templates and processors using api

Shelton — Wed, 02 Jan 2019 06:38:33 GMT

@john y

Can you use http:// localhost:8080 instead of www !

Re: Truoble with creating templates and processors using api

yjohn9691 — Wed, 02 Jan 2019 14:23:59 GMT

Already changed it, but still i am getting the same answer. This is not the issue.

Re: Truoble with creating templates and processors using api

MattWho — Thu, 03 Jan 2019 01:14:29 GMT

@john y

The rest-api endpoint you are using is incorrect for instantiating an existing template on the canvas. You should instead be using a curl command that looks something like this:

# curl 'http://localhost:8080/nifi-api/process-groups/<PROCESS GROUP UUID>/template-instance' -H 'Content-Type: application/json' --data-binary '{"templateId":"<THE_TEMPLATE_UUID>","originX":100,"originY":100,"disconnectedNodeAcknowledged":false}' —compressed

The rest-api endpoint contains the UUID of the process group in which you will be instantiating your template. You need to include a header like above that defines the content type and then provide "--data-binary" json that includes the template's UUID and the x coordinates on the graph where the template should be placed.

Thank you,

Matt

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