Created on 10-04-201801:33 PM - edited 08-17-201906:17 AM
Properties File Lookup Augmentation of Data Flow in Apache NiFi 1.7.x
A really cool technologist contacted me on LinkedIn and asked an interesting question
How do I read values from a properties file and use them in my flow. I want to update/inject an attribute with this value.
If you don't want to use the Variable Registry, but want to inject a value from a properties file how to do it. You could run some REST server and read it or does some file reading hack. But we have a great service to do this very easily!
In my UpdateAttribute (or in your regular attributes already), I have an attribute named, keytofind. This contains a lookup key such as an integer or a string key. We will find that value in the properties value and give you that in an attribute of your choosing.
We have a Controller Service to handle this for you. It reads from your specified properties file. Make sure Apache NiFi has permissions to that path and can read the file.