Feature Proposal: Implement `create_update_user` function for Metadata Service `gremlin_proxy`

Expected Behavior or Use Case

Currently, the function gremlin_proxy.py#create_update_user is not implemented as it is implemented for neo4j

This implementation is required when the OIDC with indexUsers is configured, in order to create the user details.

References

Documentation reference: https://www.amundsen.io/amundsen/metadata/docs/configurations/#user_detail_method-optional

Article reference: https://www.stemma.ai/blog-post/how-to-setup-oidc-authentication-in-amundsen topic Optional: Ingest Users in metadata proxy

[hansadriaans]

Turns out there are two main issues:

1. Neptune doesn’t support None types (it puts in string ‘null’)
2. the current package neptune 1.4.0.1 somehow doesn’t support nested structure in the order by. So order by item.row_id doesn't work and item.row_id as item_row_id order by item_row_id` does work.

We are working on some small changes here

[hansadriaans]

There is a lot of functionality not implemented for gremlin that is implemented in Neo4j. We are currently looking into using openCypher for Neptune not using Gremlin anymore