Truoble with creating templates and processors using api

[#1]

Hi there!

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

1. 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.
2. 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

[#2]

@john y

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

[#3]

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

[#4 · Accepted solution]

@john y

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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

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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.

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Thank you,

Matt

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