Nifi jolt transformation to transform input json

Question

Can someone help me on defining jolt specification to transform input json to Output json for below json ..I have input json in a file as few json objects like {"filename":"test1","value":"10"} {"filename":"test2","value":"10"} . Transformed Output json should be like below : {"filename":"test","overallvalue":"20", "filename":[{"filename":"test1","value":"10"},{"filename":"test2","value":"10"}]}

Filename and Overall value bith I am getting some other fields so can pass as parameter to the jolt specification

question from:https://stackoverflow.com/questions/65650206/nifi-jolt-transformation-to-transform-input-json

Answer 1

Jolt uses \ as escape character, since the data has $ which is reserved character for jolt.

[
  {
    "operation": "shift",
    "spec": {
      "#\${main_file}": "filename",
      "#\${Overall_status}": "ex_status",
      "#\${final_message}": "error",
      "*": "fl_status"
    }
  }
]