Project requirement to Read input files from COBOL and bring on Mosaic Platform

I have written a custom code in java, which connects to COBOL source and fetch the data and finally lands it to the Blob storage, and uploaded it to my GIT repository. Using Mosaic, I have invoked this custom java code as Pre-Hook.

Now instead of java, you can also write your custom code in python and invoke it as Pre-hook or Post-hook using Mosaic.