Code Review Checklist Pdf

Standard Operating Procedure: Code Review Checklist (SOP-ENG-042)

1. Document Control & Revision History

2. Executive Summary & Scope

This SOP establishes the mandatory governance framework for the peer-review of source code within the enterprise ecosystem. Its objective is to mitigate security vulnerabilities, ensure architectural alignment with enterprise standards, and maintain technical debt thresholds. This policy applies to all engineers, contractors, and third-party vendors contributing to the production codebase. Non-compliance constitutes a breach of the Secure Software Development Life Cycle (SSDLC) policy.

3. Prerequisites & Tool Requirements

• Access Rights: Read/Write access to the protected primary branch; elevated repository permissions.
• Software Stack: Validated IDE (VS Code/IntelliJ with Enterprise Plugin Suite); access to static analysis tooling (e.g., SonarQube, Snyk).
• Certifications: Completion of "Secure Coding Practices (Lvl 2)" internal training.
• Authentication: Multi-factor authentication (MFA) enabled for all version control system (VCS) interfaces.

4. Roles & Responsibilities (RACI Matrix)

5. Step-by-Step Operational Procedure

Phase 1: Pre-Submission Audit

• Ensure all local unit tests have passed with a minimum of 85% coverage.
• Verify that no credentials, API keys, or PII are hardcoded in the change set.
• Validate that the commit message adheres to Conventional Commits standards.

Phase 2: Peer Review Execution

• Verify logic follows the established Design Pattern (e.g., Factory, Strategy, Repository).
• Check for edge cases, including null pointer exceptions, boundary conditions, and race conditions.
• Confirm compliance with established style guides (e.g., Google Java Style, PEP8).
• Assess the "cognitive load" of the change; ensure modularity is preserved.

Phase 3: Final Verification & Merge

• Confirm all requested changes from the reviewer have been implemented and verified.
• Execute automated static analysis tool reports; verify zero "High" or "Critical" vulnerabilities.
• Confirm the build pipeline (CI) has successfully completed the deployment simulation.

6. Quality Assurance & Verification Criteria

• Code Coverage Threshold: No new PR shall be merged if total project coverage drops below the baseline of 85%.
• Complexity Benchmarks: Cyclomatic complexity per function must not exceed 10.
• Documentation Requirement: All public-facing APIs and interfaces must be documented using the enterprise Javadoc/Swagger standard.
• Peer Review Requirement: Minimum of two (2) senior-level approvals for any change affecting core infrastructure.

7. Practical Troubleshooting Scenarios

Scenario 1: Reviewer/Author Conflict (Deadlock)

• Problem: Disagreement on implementation approach between Author and Reviewer resulting in >48-hour delay.
• Action: Escalate immediately to the Tech Lead. The Lead must provide a binding architectural decision within 4 hours of notification. If technical deadlock persists, the CTO Office will mandate the approach based on long-term maintainability.

Scenario 2: Critical Security Vulnerability Detected (Snyk/Sonar)

• Problem: Automated scanner flags a "Critical" severity dependency vulnerability in a submitted PR.
• Action: The PR is automatically blocked. The Author must upgrade the library to a patched version. If no patch exists, the Author must submit a "Risk Acceptance Form" to the Security Officer, or implement a temporary compensating control (e.g., network isolation) prior to merge approval.

Scenario 3: CI Pipeline Failure (False Positive)

• Problem: CI pipeline fails on a test suite unrelated to the submitted changes.
• Action: Trigger a "Re-run" on the CI job. If the failure persists, report to the DevOps/SRE team. Under no circumstances may an Author bypass the CI gate using repository admin overrides.