Since recently there is a REST API that exposes Genie functionality. 

https://www.databricks.com/blog/genie-conversation-apis-public-preview

https://docs.databricks.com/api/workspace/genie

any github repo available to integrate the same with open source service

Not entirely sure I fully understand the question. Ginie itself is not open source, so you'll have to use the API exposed by Databricks if you want Ginie behavior. You should however be able to invoke these services from anywhere as long as your workspace does not restrict the traffic. Is that what you were referring to?

Thank you 🙂

Thank you for the code. However, when user asks a follow up question, app responds with irrelevant data. The context or history is not preserved. How to handle this?