🔥 HIGH: Database Connection Issues and Resource Leaks

[parmarmanojkumar]

🔥 HIGH FUNCTIONAL ISSUE

Severity: High
Component: Database Access Layer
File: responsible-ai-moderationlayer/src/dao/AdminDb.py

Issue Description

Multiple database connection and resource management issues that can lead to connection leaks and system instability.

Problems Identified

1. Global Connection Variable

Line 41-42: Global mutable state for database connections

• Shared state across requests can cause race conditions
• No connection pooling or proper lifecycle management

2. Connection String Construction Issues

Lines 66, 91, 115, 139, 169: Inconsistent connection string building

• No validation of connection parameters
• Potential for connection string injection
• Mixed authentication mechanisms

3. No Connection Cleanup

• No explicit connection closing
• Missing connection timeout configurations
• No retry mechanisms for failed connections

4. Mixed Database Types Without Abstraction

• Direct mixing of MongoDB, PostgreSQL, and Cosmos DB code
• No database abstraction layer
• Inconsistent error handling across database types

Impact

• Connection leaks leading to resource exhaustion
• Race conditions in multi-threaded environments
• Inconsistent behavior across different database backends
• Poor error recovery from database failures

Recommended Solution

1. Implement Database Factory Pattern
2. Add Connection Pooling
3. Create Database Abstraction Layer
4. Add Proper Resource Management

Priority: High - Can cause production instability and resource exhaustion