ngit-grasp/INVESTIGATION_COMPLETE.md

🎉 Architecture Investigation Complete

Summary

I have completed a comprehensive investigation of the GRASP protocol, reference implementation, and Rust ecosystem to design the architecture for ngit-grasp.

Key Finding

✅ The git-http-backend Rust crate is sufficiently flexible to allow inline authorization logic

We do NOT need Git hooks. We can intercept and validate pushes directly in the HTTP handler before spawning Git.

Decision

Use inline authorization (not pre-receive hooks)

Why This Is Better

1. Better UX: Direct HTTP error responses vs. parsing hook stderr
2. Simpler Deployment: Single Rust binary, no hook management
3. Easier Testing: Pure Rust unit tests, no shell scripts
4. Better Performance: Skip Git spawn for invalid pushes
5. Tighter Integration: Shared state between Git and Nostr components

Documentation Created

📋 For Your Review

1. REVIEW_SUMMARY.md ⭐ START HERE
   • Executive summary of investigation
   • Architecture decision and rationale
   • Implementation roadmap
   • Success criteria

📚 Architecture Documents

2. docs/ARCHITECTURE.md

   • Detailed component design with code examples
   • Data flow diagrams
   • Testing strategy
   • Performance considerations
   • ~8,000 words of detailed design

3. docs/DECISION_SUMMARY.md

   • Why inline authorization vs. hooks
   • Investigation findings
   • Concerns and mitigations

4. docs/COMPARISON.md

   • Side-by-side comparison with ngit-relay
   • Performance estimates
   • When to choose each implementation

🔧 Technical References

5. docs/GIT_PROTOCOL.md

   • Git Smart HTTP protocol reference
   • Pkt-line format explanation
   • Parsing examples and code snippets

6. docs/GETTING_STARTED.md

   • Step-by-step implementation guide
   • Development workflow
   • Common issues and solutions

📖 Project Files

7. README.md

   • Project overview
   • Quick start guide
   • Feature list and roadmap

8. docs/README.md

   • Documentation index
   • Reading guide for different audiences

9. .env.example

   • Configuration template

10. LICENSE

    • MIT License

Architecture Overview

┌─────────────────────────────────────────┐
│      ngit-grasp (Single Binary)         │
├─────────────────────────────────────────┤
│                                         │
│  actix-web HTTP Server                  │
│         ↓              ↓                │
│   Git Handlers   Nostr Relay            │
│         ↓              ↓                │
│   Inline Auth ← Query State             │
│         ↓                               │
│   Spawn Git (if valid)                  │
│                                         │
└─────────────────────────────────────────┘

Technology Stack

• actix-web: HTTP server
• git-http-backend: Git protocol (Rust crate)
• nostr-relay-builder: Nostr relay (rust-nostr)
• tokio: Async runtime

Implementation Estimate

• ~1,400 lines of code (similar to reference)
• 4-6 weeks for GRASP-01 MVP
• Well-documented with extensive examples

GRASP Compliance

GRASP-01 (MVP)

• ✅ Designed and documented
• ⏭️ Ready to implement

GRASP-02 (Proactive Sync)

• ✅ Architecture designed
• ⏭️ Future phase

GRASP-05 (Archive)

• ✅ Architecture designed
• ⏭️ Future phase

Recommendation

✅ Proceed with implementation

The architecture is:

• Technically sound
• Pragmatic and achievable
• Superior to hook-based approach
• Well-documented
• Testable
• GRASP-compliant

Next Steps

1. Review REVIEW_SUMMARY.md
2. Review docs/ARCHITECTURE.md
3. Approve or provide feedback on architecture
4. Begin implementation following docs/GETTING_STARTED.md

Questions?

All design decisions are documented with rationale. If you have questions or want to discuss any aspect, the documentation provides detailed context.

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Ready to build! 🚀