Written to POST a file ref, username and UUID to an API running with Flask:-

(Note:- this URL can be used to test your curl script to see just what you actually sent. https://httpbin.org/anything )

#!/bin/bash

# Just random test data!

# Simple Auth Token
AUTH_TOKEN="123123aasda%^&^%HG"

# Generate email ramdomly
EMAILS=(user1@example.com user2@example.com user3@example.com)

# Get length of list with:- "${#EMAILS[@]}"
INDEX=$(( RANDOM % ${#EMAILS[@]} ))
EMAIL="${EMAILS[${INDEX}]}"

# Generate uuid
UUID=$(uuidgen)

printf "Using %dth email.\n" ${INDEX}
printf "UUID is %s.\n\n" ${UUID}

curl -i -X POST \
-H 'Content-Type: application/json' \
-d "{\"auth_token\":\"${AUTH_TOKEN}\", \"user_id\":\"${EMAIL}\", \"file_reference\":\"testFile.odt\", \"uuid\":\"${UUID}\"}" \
http://192.168.21.197:5000/nifiapi