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From John McMahon <>
Subject Re: Nifi Rest API Examples
Date Wed, 02 Sep 2015 21:54:56 GMT
I have been able to run my rest calls and get json data returned. I do 
have a process for creating Json objects from those responses, but I see 
there is the nifi API has object classes for successful returns.

For example, the /controller/about call returns a JSON with two entries 
(revision and about) and according to the Rest API doc it could also be 
an AboutEntity that has two properties with the same respective names.

But when I look at the About entity, it doesn't have a constructor to 
use a JSON string to set the property values and create an instance of 
the entity.

Is there a recommended approach for getting the response as the 
respective Entity object for the rest call?

Also, I've tried some attempts to test Nifi's persistence when a data 
flow is active. But I think the data flow I've created is too small or 
simple as by the time I've disabled power the to mission, the data flow 
has successfully run it's course. Are there any recommendations for ways 
to test what happens to data within a data flow when nifi is suddenly 

I know there are four repositories in use, does the data in a data flow 
get stored in any of these repositories when transitioning between 
processors within a data flow? Does Nifi continue where it left off when 


On 9/2/15 11:34 AM, Aldrin Piri wrote:
> John,
> The API lives at /nifi-api, so the address you are looking for would 
> be http://localhost:8080/nifi-api/controller/about
> Please let us know if you have any additional questions or stumbling 
> blocks. Thanks!
> Aldrin Piri
> Sent from my mobile device.
> On Wed, Sep 2, 2015 at 10:16 AM, John McMahon 
> < 
> <>> wrote:
>     Greetings all,
>     I have started looking into Apache Nifi. I was interested in using
>     the Rest API and after I started my instance of Nifi, I wanted to
>     test it.
>     My Nifi is located at localhost:8080/nifi. I am using Rest Web
>     Service Client on Chrome
>     I set the method to GET and the URL to
>     http://localhost:8080/nifi/controller/about
>     I think this is a good rest call to use since the Authorization is
>     Ready Only and the data shouldn't be anything critical.
>     I get the the following response:
>     404, Not Found
>     Date: Wed, 02 Sep 2015 15:08:44 GMT
>     Cache-Control: must-revalidate,no-cache,no-store,
>     must-revalidate,no-cache,no-store
>     X-UA-Compatible: IE=edge
>     Server: Jetty(9.2.11.v20150529)
>     Content-Length: 305
>     Content-Type: text/html; charset=ISO-8859-1
>     *Time taken*(in milliseconds): 52
>     Mind you, I don't have any users entered into Nifi's user list.
>     This is currently just a barebones Nifi instance.
>     I don't know why the response contains IE=edge as I do not have
>     that software on my Mac.
>     Is the path I entered for URL incorrect? Then I set the URL to
>     http://localhost:8080/controller/about
>     and it returned a response code of 200, however  in the Raw
>     Response I got the following message about mistyping and
>     recommending I add "/nifi" to the path:
>     <!DOCTYPE html>
>     <html>
>     <head>
>     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
>     <link rel="shortcut icon" href="../nifi/images/nifi16.ico"/>
>     <title>NiFi</title>
>     <link href="/nifi/css/message-pane.css" rel="stylesheet"
>     type="text/css" />
>     <link href="/nifi/css/message-page.css" rel="stylesheet"
>     type="text/css" />
>     </head>
>     <body class="message-pane">
>     <div class="message-pane-message-box">
>     <p class="message-pane-title">
>     Did you mean: <a href="/nifi/">/nifi</a>
>     </p>
>     <p class="message-pane-content">You may have mistyped...</p>
>     </div>
>     </body>
>     </html>

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