stemedb/uat/phase6-distributed-2026-02-02.md
jordan d3a88585fe feat: Phase 6 UAT - Admission control, HLC recency, cluster coordination
This commit includes comprehensive work on Phase 6 features:

## Admission Control (Phase 6 admission middleware)
- AdmissionStore implementation backed by TrustRankStore
- PoW verification with tier-based difficulty computation
- Trust tier progression (Newcomer → Established → Trusted → Authority)
- API integration with admission status endpoints

## HLC Recency Lens (Phase 6C)
- HlcRecencyLens for distributed system ordering
- Hybrid logical clock integration with causality preservation

## Cluster Coordination (Phase 6C)
- Multi-node cluster tests (availability, partition tolerance)
- CRDT convergence tests for anti-entropy sync
- Gateway handler improvements

## Aphoria Code Linter (Phase 2A)
- RFC/OWASP corpus builders with network fetching and caching
- Concept hierarchy with auto-alias creation on conflict detection
- Multiple security extractors (TLS, JWT, CORS, secrets, rate limiting)

## Code Organization
- Split large files into modules to comply with 500-line limit
- Improved test organization with separate test modules
- Fixed rkyv serialization for EigenTrustState (AgentScore struct)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-03 00:43:37 -07:00

5.8 KiB

UAT Report: Phase 6 — The Mesh (Distributed Writes)

Date: 2026-02-02 Phase/Feature: Phase 6 (Distributed Writes) + Quickstart Update Tester: Claude Opus 4.5 Status: PASS

Summary

Full product walkthrough of StemeDB after Phase 6 completion. All existing functionality works correctly, all Phase 6 test suites pass, and the new cluster node binary demonstrates distributed routing. Quickstart updated with runnable cluster examples.

Scope

What was tested:

  • Full build and lint (cargo build, cargo clippy)
  • Validation script (scripts/validate.sh)
  • Single-node API server (stemedb-api)
  • Swagger UI accessibility
  • Go SDK examples (basic, conflict, skeptic)
  • curl-based assertion/query workflow
  • Skeptic and Layered endpoints
  • Phase 6 crates: merkle, rpc, sync, cluster
  • Replication battery tests (battery11)
  • New cluster node binary (stemedb-node)
  • Cluster gateway endpoints

What was NOT tested:

  • Multi-node cluster with actual network communication (RPC forwarding not yet wired)
  • Failure detection scenarios (SWIM probing)
  • Range split/merge under load
  • Production deployment configurations

Environment

  • Rust version: 1.75+ (stable)
  • OS: Darwin 23.6.0 (macOS)
  • Commit: main branch, post-Phase 6

Test Results

Build & Lint

Test Expected Actual Status
cargo build --workspace Compiles without errors Compiled in 36.82s PASS
cargo clippy --workspace No warnings 1 doc-comment warning (fixed) PASS
cargo fmt --all --check No diffs Minor formatting diff (fixed) PASS

Validation Script

Test Expected Actual Status
Build complete PASS PASS PASS
Server is healthy PASS PASS PASS
Assertion created PASS Hash returned PASS
Query returned data PASS 1 assertion PASS
Lens query (Recency) PASS Winner returned PASS

Go SDK Examples

Test Expected Actual Status
basic/main.go Creates assertion, queries back Hash created, 1 result PASS
conflict/main.go Creates conflict, shows Skeptic/Layered Contested status, tier resolution PASS
skeptic/main.go Seeds claims, analyzes conflict 2 competing claims, conflict score 1.0 PASS

API Endpoints (Single-Node)

Test Expected Actual Status
GET /v1/health 200, healthy status {"status":"healthy","version":"0.1.0"} PASS
POST /v1/assert 201, hash returned {"hash":"...","status":"created"} PASS
GET /v1/query 200, assertions array {"assertions":[...],"total_count":1} PASS
GET /v1/skeptic 200, conflict analysis Contested status, 2 claims PASS
GET /v1/layered 200, tier resolution Clinical wins over Anecdotal PASS
GET /swagger-ui/ 200 HTTP 200 PASS

Phase 6 Test Suites

Crate Tests Expected Actual Status
stemedb-merkle 16 All pass 16/16 PASS
stemedb-rpc 5 All pass 5/5 PASS
stemedb-sync 10 All pass 10/10 PASS
stemedb-cluster (gateway) 10 All pass 10/10 PASS
stemedb-cluster (membership) 8 All pass 8/8 PASS
stemedb-cluster (sharding) 10 All pass 10/10 PASS
battery11 replication 8 All pass 8/8 PASS

Cluster Node Binary

Test Expected Actual Status
Binary builds Compiles Built in 3.54s PASS
Node starts Binds to port 4000 Gateway listening PASS
GET /v1/health healthy: true {"healthy":true,"joined":true} PASS
GET /v1/cluster/status Shows shards 4 shards, version 1 PASS
GET /v1/route?subject=Tesla_Inc Returns shard shard_id: 0 PASS
GET /v1/route?subject=Bitcoin Different shard shard_id: 3 PASS
GET /v1/shards/0 Shard metadata replicas, size, generation PASS

Routing Distribution

Subject Shard
Apple 0
Google 2
Semaglutide 1
Bitcoin 3
Central_Bank 0
Machine_Learning 0
Rust_Language 3
Climate_Change 3

Issues Found

1. Doc Comment Formatting in swim.rs

Severity: Low Status: Fixed

Clippy flagged doc_lazy_continuation error at line 407 — missing blank line before continuation.

Fix: Added blank line in doc comment.

2. Health Endpoint Returns Unhealthy for Bootstrap Node

Severity: Medium Status: Fixed

Single-node cluster reported healthy: false because the health check required joined && !members.is_empty(). A bootstrap node has no peers, so members.is_empty() was true.

Fix: Changed health check to just joined — a bootstrap node is healthy if it has joined (even with zero peers).

Fixes Applied

  1. crates/stemedb-cluster/src/membership/swim.rs:407 — Added blank line in doc comment
  2. crates/stemedb-cluster/src/gateway/handlers.rs:275 — Changed health logic from joined && !members.is_empty() to joined
  3. cargo fmt --all — Applied formatting fixes

Artifacts

  • Cluster node binary: crates/stemedb-cluster/src/bin/node.rs
  • Updated quickstart: quickstart.md (Section 8: Distributed Mode)
  • Test output: All 67 Phase 6 tests pass

Recommendations

  1. Add multi-node integration test — Spin up 2-3 nodes, verify SWIM discovery and gossip
  2. Wire RPC forwarding — Gateway currently returns routing info but doesn't forward to storage nodes
  3. Add cluster validation script — Similar to scripts/validate.sh but for cluster mode
  4. Document seed node configuration — How to bootstrap a 3-node cluster

Sign-Off

  • All critical tests pass
  • No blocking issues remain
  • Documentation updated (quickstart.md)
  • Ready for release