🔍 Code Extractor

function migrate_audit_trail

Maturity: 46

Migrates existing audit events from a legacy format to a new AuditTrail structure in a Neo4j database, returning migration statistics.

File:
/tf/active/vicechatdev/CDocs/db/db_operations.py
Lines:
1072 - 1096
Complexity:
moderate

Purpose

This function serves as a database migration utility to transform audit event data into a new schema structure. It's typically used during system upgrades or schema changes to ensure audit trail data remains accessible and conforms to the updated AuditTrail structure. The function handles the migration process safely with error handling and logging, making it suitable for production database migrations.

Source Code

def migrate_audit_trail():
    """
    Migrate existing audit events to the new AuditTrail structure.
    
    Returns
    -------
    dict
        Migration results including number of events migrated
    """
    try:
        from CDocs.db import get_driver
        from CDocs.db.schema_manager import migrate_audit_events
        
        driver = get_driver()
        result = migrate_audit_events(driver)
        
        #logger.info(f"Audit trail migration: {result['message']}")
        return result
    except Exception as e:
        logger.error(f"Error running audit trail migration: {e}")
        return {
            "success": False,
            "message": f"Error running audit trail migration: {str(e)}",
            "events_migrated": 0
        }

Return Value

Returns a dictionary containing migration results with keys: 'success' (bool indicating if migration succeeded), 'message' (str describing the outcome), and 'events_migrated' (int count of successfully migrated events). On error, returns a dict with success=False and events_migrated=0.

Dependencies

  • neo4j
  • CDocs.db
  • CDocs.db.schema_manager

Required Imports

import logging

Conditional/Optional Imports

These imports are only needed under specific conditions:

from CDocs.db import get_driver

Condition: imported inside function during execution, required for database connection

Required (conditional) 
from CDocs.db.schema_manager import migrate_audit_events

Condition: imported inside function during execution, required for performing the actual migration

Required (conditional)

Usage Example

import logging

# Setup logger (required in module scope)
logger = logging.getLogger(__name__)
logger.setLevel(logging.INFO)
handler = logging.StreamHandler()
logger.addHandler(handler)

# Ensure CDocs is configured with database connection
# (typically done via environment variables or config)

# Run the migration
result = migrate_audit_trail()

if result['success']:
    print(f"Migration successful: {result['message']}")
    print(f"Events migrated: {result['events_migrated']}")
else:
    print(f"Migration failed: {result['message']}")

Best Practices

  • Ensure database backups are created before running this migration function
  • The function uses lazy imports to avoid circular dependencies and reduce initial load time
  • Always check the 'success' field in the returned dictionary before assuming migration completed
  • The function logs errors but does not raise exceptions, making it safe for use in automated scripts
  • Consider running this migration during low-traffic periods as it may lock database resources
  • The logger variable must be defined in the module scope before calling this function
  • Test the migration on a development/staging database before running in production

Tags

database-migration audit-trail neo4j schema-migration data-transformation error-handling logging

Similar Components

AI-powered semantic similarity - components with related functionality:

  • function migrate_audit_events 79.1% similar

    Migrates orphaned AuditEvent nodes from CDocs nodes to an AuditTrail node in a Neo4j graph database by deleting old relationships and creating new ones.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py

  • function get_audit_trail 63.6% similar

    Retrieves audit trail events from a Neo4j database with optional filtering by date range, action type, and user, returning a list of audit event dictionaries.

    From: /tf/active/vicechatdev/CDocs/controllers/admin_controller.py

  • function init_database 60.4% similar

    Initializes a Neo4j database with required schema constraints, creates an AuditTrail node, and migrates existing audit events.

    From: /tf/active/vicechatdev/CDocs/db/__init__.py

  • function migrate_approval_cycles 57.9% similar

    Migrates legacy Approval nodes and their related structures to the new ApprovalCycle model in a Neo4j graph database, creating ApprovalCycle nodes and ApproverAssignment nodes while maintaining relationships with DocumentVersion nodes.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py

  • function migrate_approval_data 57.7% similar

    Migrates legacy single-step approval records in Neo4j to a new multi-step approval model by creating ApprovalStep nodes and Approver nodes with proper relationships.

    From: /tf/active/vicechatdev/CDocs/db/schema_manager.py
← Back to Browse