Linux Service that Listens for an XML Feed and Parses into MySQL

I am looking to build a software application that runs on Ubuntu Server. The application will need to communicate with a cloud to get temporary licensing daily. No pay, no license, no workee. The application will need to run as a service with minimal permissions ( we are interested in how this is going to get done. If there are options or different paths we want to understand that) . We need the service to respawn if it dies and to throw us an error so we know. We want to build a Modular POS or Point of Sale listener and parser-This is a piece of software that does a few things. It is a listener- The listener component needs to be configurable to a port. Data can come in via- TCP-needs to be able to function without acknowledgement. In other words, the application sending the data to OUR listener doesn’t care if it gets back anything. It just drops it on the floor UDP- data can come in via UDP RS232- We have cases where data comes in via RS232 or serial port Format- Needs to be completely modular and agnostic of input or stdin if you will XML- I have an XML document for the first integration Flat File- We would like to point this at a flat file for debugging and maybe other purposes ASCii in the future It is a parser- This software will be collecting inbound data from a data stream The Data stream has 104 elements listed in the attached file. Those elements are all xml elements, they need to be pushed into a MySQL db locally and we would like to have the data encrypted at rest if we can. I There are elements in the XML that we are interested in during runtime and would like to be able to report on it every 10 minutes if possible though this is nice to have, if it is really problematic we can push this to version 2 Data is then pointed to an endpoint at a MySQL GCP endpoint and pushed up as quickly as reliably possible Data cleans up after itself, the local MySQL DB should be holding only a few days of data. Up to 7 configurable by quantity of hours If the DB dies or something bad happens we need to know, system reports up to the cloud MySQL that everything is Ok every minute or so This needs to run on Ubuntu Server This package should be deployable by GCP. It needs to be able to be able to be upgraded, patched or worked on. We would really like this done in Python. I have balsamiq and I can easily give you an idea what i am looking for with regards to interface, which isn’t much. Configuration using ascii or perl script at the command line is fine with me.