[Improvement] Add GraphID isolation support for FalkorDB multi-tenant architecture

[galshubeli]

Summary

This PR introduces GraphID isolation functionality to support FalkorDB's multi-tenant graph database architecture, enabling different graph partitions to operate independently while maintaining compatibility with Neo4j.

Type of Change

• Bug fix
• New feature
• Performance improvement
• Documentation/Tests

Objective

For new features and performance improvements: Clearly describe the objective and rationale for this change.

Testing

• Unit tests added/updated
• Integration tests added/updated
• All existing tests pass

Breaking Changes

• This PR contains breaking changes

If this is a breaking change, describe:

• What functionality is affected
• Migration path for existing users

Checklist

• Code follows project style guidelines (make lint passes)
• Self-review completed
• Documentation updated where necessary
• No secrets or sensitive information committed

Related Issues

Closes #[issue number]

---

Important

Adds GraphID isolation for FalkorDB with multi-tenant support and automatic index building.

• GraphID Isolation:
  • Adds handle_multiple_group_ids decorator in decorators.py to handle multiple group IDs for FalkorDB.
  • Updates GraphDriver in driver.py to include default_group_id and clone() method.
  • Modifies FalkorDriver and Neo4jDriver to support automatic index and constraint building.
• Graphiti Class:
  • Integrates handle_multiple_group_ids in methods like retrieve_episodes, build_communities, and search.
  • Removes get_default_group_id usage, relying on default_group_id from drivers.
• Examples:
  • Removes manual index building from quickstart_falkordb.py and quickstart_neo4j.py.
• Misc:
  • Adds SearchResults.merge() method in search_config.py for merging results.
  • Removes build_indices_and_constraints from graph_data_operations.py.

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1. examples/quickstart/quickstart_falkordb.py:78

• Draft comment:
  Removed explicit indices initialization. Ensure that auto-scheduling of build_indices_and_constraints during driver initialization is sufficient for demo purposes.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

2. examples/quickstart/quickstart_neo4j.py:67

• Draft comment:
  Removed the explicit invocation of build_indices_and_constraints. Confirm that automatic index/constraint creation in the Neo4jDriver init meets your needs.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

3. graphiti_core/decorators.py:16

• Draft comment:
  The handle_multiple_group_ids decorator properly dispatches calls per group. Consider adding tests for edge cases where 'group_ids' is passed positionally to ensure robust parameter extraction.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

4. graphiti_core/driver/driver.py:83

• Draft comment:
  Added abstract build_indices_and_constraints; also note that the default clone() returns self. Consider either making clone() abstract or clearly document that a shallow clone is returned when no change is needed.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

5. graphiti_core/driver/falkordb_driver.py:72

• Draft comment:
  The default_group_id is set to '\'. Confirm that the backslash is intentional, as the previous default was '' without escaping.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

6. graphiti_core/driver/falkordb_driver.py:156

• Draft comment:
  The clone() method sometimes returns 'self' for the same database. Ensure this shallow clone behavior is safe for multi-tenant isolation and won’t lead to unintended side effects.
• Reason this comment was not posted:
  Confidence changes required: 66% <= threshold 80% None

7. graphiti_core/driver/neo4j_driver.py:36

• Draft comment:
  Auto-scheduling build_indices_and_constraints in Neo4jDriver’s init looks consistent with FalkorDB. Ensure that this background task approach fits all deployment scenarios.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

8. graphiti_core/graphiti.py:442

• Draft comment:
  In add_episode_endpoint, mutating self.driver and self.clients.driver based on group_id may introduce side effects in concurrent environments. Consider using a local driver instance to avoid race conditions.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

9. graphiti_core/graphiti.py:620

• Draft comment:
  Similar to add_episode_endpoint, add_episode_bulk mutates the driver instance. Evaluate potential race conditions when multiple calls modify self.driver concurrently.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

10. graphiti_core/models/nodes/node_db_queries.py:130

• Draft comment:
  File is missing a trailing newline at the end. Please add a newline to conform with common style guidelines.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

11. graphiti_core/utils/maintenance/graph_data_operations.py:20

• Draft comment:
  Removal of the build_indices_and_constraints utility function is noted. Ensure that all callers (and documentation) now use the driver's build_indices_and_constraints method.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 80% None

Workflow ID: wflow_iSzp2X8kj0kCmqgE

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