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From Pushkara R <>
Subject Issues with creating and connecting RPG programmatically
Date Thu, 04 May 2017 16:49:27 GMT

I am trying to write a function that takes two parameters, a processor ID
in machine A and an input port in machine B and creates an RPG in machine B
which connects the above to.

Now, how I am doing that is
1. A POST to the
endpoint to create an RPG and retrieve the ID of that RPG
2. A POST to the */nifi-api/process-groups/<rootprocessgroupid>/connections
*endpoint to create a connection between the processor and the input port.
the processorID and the ID of the input port are being provided along with
the list of the relationships.
3. A final PUT to */nifi-api/remote-process-groups/<rpgid> *to enable the
transmission between the machines*.*

Now, the function always throws errors in step 2. A 409 is thrown for the
POST request with the error being 'Unable to find specified destination'.
(though refreshing the canvas on machine 1 shows the rpg having been
However, when I manually run the steps 2 and 3 afterwards, with the same
rpgid, the connection happens.

Now, I'm not sure if this is a synchronization issue or not, but I want to
figure it out because I would not want to separate out steps 1 2 and 3.
Could somebody point out what could be the issue here?


PS - the post messages for steps 2 are the same when the api is called from
within the function and manually.

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