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felt/.planning/phases/01-tournament-engine/01-01-SUMMARY.md
Mikkel Georgsen 8be69688e9 docs(01-01): complete project scaffold + core infrastructure plan 
- SUMMARY.md with full execution details, 2 task commits, 2 deviations
- STATE.md updated with position (Plan 2/14), decisions, metrics
- REQUIREMENTS.md: ARCH-01, ARCH-04, ARCH-05, ARCH-06, ARCH-07 marked complete

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-01 03:47:04 +01:00

7.4 KiB
Raw Blame History

phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established requirements-completed duration completed
01-tournament-engine 01 infra
go
nats
jetstream
libsql
websocket
chi
jwt
embed
sveltekit
Go binary scaffold with cmd/leaf entry point
Embedded NATS JetStream with AUDIT and STATE streams
LibSQL database with WAL mode and migration runner
WebSocket hub with JWT auth and tournament-scoped broadcasting
chi HTTP server with middleware (auth, CORS, body limits, timeouts)
SvelteKit SPA stub served via go:embed with fallback routing
Health endpoint reporting all subsystem status
Integration test suite (9 tests)
01-tournament-engine
added patterns
go-libsql v0.0.0-20251219133454 (pinned commit, no tagged releases)
nats-server v2.12.4 (embedded, JetStream sync=always)
nats.go v1.49.0 (client + jetstream package)
coder/websocket v1.8.14
go-chi/chi v5.2.5
golang-jwt/jwt v5.3.1
Embedded NATS with DontListen=true, in-process client connection
WebSocket JWT auth via query parameter (not header)
Tournament-scoped broadcasting via client subscription
UUID validation before NATS subject construction (injection prevention)
go:embed SPA with fallback routing for client-side routing
Reverse-order graceful shutdown on signal
created modified
cmd/leaf/main.go
cmd/leaf/main_test.go
internal/nats/embedded.go
internal/nats/publisher.go
internal/server/server.go
internal/server/ws/hub.go
internal/server/middleware/auth.go
internal/server/middleware/role.go
internal/server/middleware/bodylimit.go
internal/store/db.go
internal/store/migrate.go
frontend/embed.go
frontend/build/index.html
Makefile
go.mod
go.sum
NATS JetStreamSyncInterval=0 (sync_interval: always) for single-node durability per Jepsen 2025
WebSocket JWT via query parameter rather than header (browser WebSocket API limitation)
Ephemeral JWT signing key (generated on startup) — will be persisted in a later plan
NATS server requires Go 1.24+ — upgraded from Go 1.23 (auto-resolved by go get)
Tournament validator is a stub (accepts all) — will validate against DB in auth plan
Embedded infrastructure: all services start in-process, no external dependencies
Tournament-scoped state: all broadcasting and events keyed by tournament ID
UUID validation on all NATS subject construction (security)
Integration tests with httptest.NewServer and t.TempDir() for isolation
ARCH-01
ARCH-04
ARCH-05
ARCH-06
ARCH-07
15min 2026-03-01

Phase 1 Plan 01: Project Scaffold + Core Infrastructure Summary

Go binary embedding NATS JetStream (sync=always), LibSQL (WAL), WebSocket hub (JWT auth), chi HTTP server, and SvelteKit SPA via go:embed — all verified with 9 integration tests

Performance

  • Duration: 15 min
  • Started: 2026-03-01T02:27:38Z
  • Completed: 2026-03-01T02:42:58Z
  • Tasks: 2
  • Files modified: 48

Accomplishments

  • Single Go binary compiles and runs with all infrastructure embedded — no external services required
  • NATS JetStream with mandatory sync_interval=always for single-node durability (Jepsen 2025 finding)
  • WebSocket hub authenticates via JWT query param, broadcasts tournament-scoped messages, drops slow consumers
  • Health endpoint reports status of all subsystems (database, NATS, WebSocket)
  • Full directory structure matching research recommendations with 30+ package stubs

Task Commits

Each task was committed atomically:

  1. Task A1: Initialize Go module and dependency tree - af13732 (feat)
  2. Task A2: Implement core infrastructure - 16caa12 (feat)

Files Created/Modified

  • cmd/leaf/main.go - Entry point: flags, startup orchestration, signal handling, graceful shutdown
  • cmd/leaf/main_test.go - 9 integration tests covering all verification criteria
  • internal/nats/embedded.go - Embedded NATS server with JetStream, AUDIT + STATE streams
  • internal/nats/publisher.go - Tournament-scoped publisher with UUID validation
  • internal/server/server.go - chi HTTP server with middleware, health endpoint, SPA handler
  • internal/server/ws/hub.go - WebSocket hub with JWT auth, tournament scoping, broadcasting
  • internal/server/middleware/auth.go - JWT validation middleware (Bearer header + raw token)
  • internal/server/middleware/role.go - Role-based access control (admin > floor > viewer)
  • internal/server/middleware/bodylimit.go - MaxBytesReader middleware (1MB default)
  • internal/store/db.go - LibSQL open with WAL, foreign keys, busy timeout
  • internal/store/migrate.go - Embedded SQL migration runner with dev-only migrations
  • frontend/embed.go - go:embed handler with SPA fallback routing
  • frontend/build/index.html - Stub HTML with Catppuccin Mocha dark theme colors
  • Makefile - build, run, run-dev, test, frontend, all, clean targets
  • go.mod / go.sum - Module definition with all dependencies pinned

Decisions Made

  • NATS server v2.12.4 requires Go 1.24+ — upgraded automatically from 1.23
  • WebSocket JWT passed via query parameter (browser WebSocket API does not support custom headers)
  • JWT signing key is ephemeral (random per startup) — will be persisted to disk in auth plan
  • Tournament validator stub accepts all — real validation deferred to auth/tournament plans
  • Added run-dev Makefile target for development mode with seed data

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Store package auto-populated by linter

  • Found during: Task A1 (directory structure creation)
  • Issue: The db.go and migrate.go files were auto-populated with full implementations including migration runner, replacing my stub package declarations
  • Fix: Kept the auto-populated implementations (correct and useful), removed my redundant migrations.go stub
  • Files modified: internal/store/db.go, internal/store/migrate.go
  • Verification: go build and go vet pass
  • Committed in: af13732 (Task A1 commit)

2. [Rule 3 - Blocking] Go 1.24 required by NATS server v2.12.4

  • Found during: Task A2 (dependency installation)
  • Issue: nats-server v2.12.4 requires go >= 1.24.0, but go.mod specified 1.23.6
  • Fix: go toolchain auto-resolved by upgrading go directive to 1.24.0 in go.mod
  • Files modified: go.mod
  • Verification: go build succeeds, all tests pass
  • Committed in: 16caa12 (Task A2 commit)

Total deviations: 2 auto-fixed (2 blocking) Impact on plan: Both auto-fixes were necessary for compilation. No scope creep.

Issues Encountered

  • Go 1.23.6 installed on system but NATS v2.12.4 required Go 1.24+ — resolved automatically by Go toolchain management
  • Port 8080 remained bound after manual server test — cleaned up with lsof before re-test

User Setup Required

None - no external service configuration required.

Next Phase Readiness

  • Infrastructure scaffold complete — ready for database schema (Plan 02), auth (Plan 03), and all subsequent plans
  • All subsystems verified operational via integration tests
  • Tournament-scoped architecture established from day one (MULTI-01)

Self-Check: PASSED

All 16 created files verified present. Both commit hashes (af13732, 16caa12) found in git log. SUMMARY.md exists at expected path.

Phase: 01-tournament-engine Completed: 2026-03-01