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yjohn9691
yjohn9691
Silver ⭐️⭐️
January 2, 2019
Solved

Truoble with creating templates and processors using api

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

MattWho
MattWhoAnswer
Titanium ⭐️⭐️⭐️
January 3, 2019
@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

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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.

-

Thank you,

Matt

-

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3 replies

Shelton
Shelton
Gold ⭐️⭐️⭐️
January 2, 2019

@john y

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

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yjohn9691
yjohn9691Author
Silver ⭐️⭐️
January 2, 2019

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

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MattWho
Titanium ⭐️⭐️⭐️
MattWhoAnswer
Titanium ⭐️⭐️⭐️
January 3, 2019
@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

-

If you found this answer addressed your question, please take a moment to login in and click the "ACCEPT" link.

Translate
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