Add User sharing feature

[Vasilije1990]

Add User Data Sharing Pipeline (Kuzu + LanceDB → Kuzu + LanceDB)

📋 Summary

Create a pipeline that transfers data from one user's Kuzu + LanceDB databases to another user's Kuzu + LanceDB databases with proper metastore updates for ownership and permissions.

🔍 Background

Users need to share processed knowledge graphs between Cognee instances using the same database stack (Kuzu + LanceDB). The pipeline must transfer graph data, vector embeddings, and update PostgreSQL metastore to reflect new user ownership.

🎯 Acceptance Criteria

1. Source Data Export

Extract from source user's databases:

Export all nodes/edges from source Kuzu database

Export vector embeddings from source LanceDB collections

Export dataset metadata from PostgreSQL metastore

Data packaging: Bundle into transfer format with user context

2. Target Data Import

Import to target user's databases:

Load graph data into target user's Kuzu database

Load vectors into target user's LanceDB collections

Update PostgreSQL metastore with new user ownership

3. Metastore Updates

User mapping: Update all references from source_user_id to target_user_id

Dataset ownership: Transfer dataset ownership and permissions

Preserve relationships: Maintain data integrity across databases

4. Pipeline Implementation

Add /v1/data/export/{dataset_id} endpoint

Add /v1/data/import endpoint accepting transfer bundle

Handle user authentication and authorization

Validate target user has sufficient permissions

[P-FardeenMalik]

Hi! I'd like to work on this issue. Could you please assign it to me?

[Vasilije1990]

Done @P-FardeenMalik . Let us know if you have some questions

[P-FardeenMalik]

Hi @Vasilije1990 I've opened a PR for this issue: #1171 – Add User Data Sharing Pipeline for Kuzu + LanceDB datasets.
When you have a moment, could you please take a look and share your feedback? Let me know if anything needs to be updated or improved.