An Automated Pull Request Security Isolation and Event-Driven Audit Logging Gateway Architecture for Distributed Source Code Repositories

Abstract

Project Name: PR-DataShield Summary: This technical disclosure introduces PR-DataShield, a lightweight, zero-trust, event-driven security gateway architecture designed to secure distributed source code supply chains at the boundary of version control integration. By decoupling repository-level change requests from localized security operations, the framework utilizes asynchronous webhooks, serverless relational data persistence, and tokenized downstream feedback mechanisms to construct a deterministic code-gate keeper. Key Architectural Features: Event-Driven Ingestion: Utilizes structured cryptographic JSON payloads for secure PR event interception. Multi-Route Gateway: Implements redundant endpoint mapping to ensure operational continuity and resilient webhook delivery. Immutable Audit Ledger: Enforces transactional persistence via a serverless PostgreSQL cluster, guaranteeing non-repudiation of security logs. Asynchronous Feedback Loop: Automatically updates the host repository with an isolated markdown audit badge, providing immediate and immutable visual proof of security logging. Experimental Validation: Empirical verification conducted on July 11, 2026, demonstrated a sub-second response latency (0.27s) for the complete end-to-end security audit loop. This architecture establishes an immutable audit trail, effectively mitigating unauthorized code injection and supply chain tampering risks in modern CI/CD pipelines. Repository: https://github.com/apps/pr-datashield-bot