@joseomjr , Thank you for responding,  I instead chose a hard way approach. I thought why not create a custom Nar, which takes in 2 parameters, 1 for the json template with placeholders and 2 with its respective values.  used sort of a recursion to create the final output. for and input like  Template {"details":{"name":"${name}","age":"${age}","superpower":"${superpower}"}} value :   {"name": "Clark Kent", "age": "35","superpower": "Superman"}   gives output as  { "details": { "name": "Clark Kent", "age": "35", "superpower": "Superman" } }     ... View more

The Groovy processor takes the incoming FlowFile and does stuff with it and writes a new FlowFile with the repsonse. What I tried was a JSON upload but will try "multipart/form-data" if I get a chance and see how that looks. ... View more

@shiva239  You can create an apache "NiFi" jira in the Apache community to highlight this new feature and request modification to existing processor to support it. https://issues.apache.org/jira/ The more detail you provide in your jira the better chance someone might take this on in the community.   Please help our community thrive. If you found any of the suggestions/solutions provided helped you with solving your issue or answering your question, please take a moment to login and click "Accept as Solution" on one or more of them that helped. Thank you, Matt ... View more

You're running NiFi 2.0.0.X?   ... View more

You can achieve the same with a JOLT shift and this spec: { "*": "&", "meHostName": { "*;*": { "$(0,1)": "case", "$(0,2)": "devicename" } } } ... View more

I referred to the other article because of the custom listSFTP processor. This would make it possible to use only one PG with the workflow "move file from A to B", read the job configuration by any other processor, put the config values on a flowfile and pass it to this listSFTP processor. ... View more

Apparently in the github repo, there's a folder for processor example of base level, though it might not cover everything yet, might be a good place to solve basic issues. I had issues building a custom relationship as well, then I saw this example, which helped. Official Python Processor Examples  ... View more

Looks like NiFi is might be using GitHub - redis/jedis: Redis Java client under the covers so if it can run the commands you asked about, you might be able to build a custom Groovy processor to run them. ... View more

What headers do you set inside of Postman?  ... View more

Have you tried not escaping you " with \" in your command line arguments? ... View more