253 lines
7.9 KiB
Markdown
253 lines
7.9 KiB
Markdown
# Platform Service Integration - Migration Notes
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## Date
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2025-11-03
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## Summary
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Integrated the separate mvp-platform Python service into the backend as a TypeScript feature module.
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## Changes
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### Architecture
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- **Before**: 6 containers (Traefik, Frontend, Backend, PostgreSQL, Redis, Platform)
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- **After**: 5 containers (Traefik, Frontend, Backend, PostgreSQL, Redis)
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### Features MIGRATED (Not Removed)
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- VIN decoding via vPIC API (migrated to platform feature)
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- Vehicle hierarchical data lookups (makes/models/trims/engines)
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- PostgreSQL VIN decode function integration
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- Redis caching with 6-hour TTL (vehicle data) and 7-day TTL (VIN decode)
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### Features Removed
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- Separate mvp-platform container (Python FastAPI service)
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- External HTTP calls to platform service (http://mvp-platform:8000)
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- Platform service API key and secrets
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### Features Added
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- Platform feature module in backend (`backend/src/features/platform/`)
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- Unified API endpoints under `/api/platform/*`
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- Circuit breaker for vPIC API resilience (opossum library)
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- Dual user workflow (VIN decode OR manual dropdown selection)
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- PostgreSQL-first VIN decode strategy with vPIC fallback
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### Breaking Changes
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- API endpoints moved from old locations to `/api/platform/*`
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- VIN decode endpoint changed from POST to GET request
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- Frontend updated to use new unified endpoints
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- External platform service URL removed from environment variables
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### Technical Details
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- **Python FastAPI → TypeScript/Fastify**: Complete code conversion
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- **vehicles schema**: Remains unchanged, accessed by platform feature
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- **Redis caching**: Maintained with same TTL strategy
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- **VIN decode strategy**: PostgreSQL function → vPIC API (circuit breaker protected)
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- **Authentication**: JWT required on all platform endpoints
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## Rationale
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Simplify architecture by:
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- Reducing container count (6 → 5)
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- Unifying on Node.js/TypeScript stack
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- Eliminating inter-service HTTP calls
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- Improving development experience
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- Reducing deployment complexity
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## Migration Path
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Single-phase cutover completed 2025-11-03 with parallel agent execution:
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### Wave 1 (Parallel - 4 agents):
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1. **Platform Feature Creator**: Created `backend/src/features/platform/`
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2. **VIN Migration - Backend**: Migrated VIN logic from vehicles to platform
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3. **VIN Migration - Frontend**: Updated to `/api/platform/*` endpoints
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4. **Configuration Cleanup**: Removed platform container from docker-compose
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### Wave 2 (Parallel - 2 agents):
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5. **Integration & Testing**: Verified integration and tests
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6. **Documentation Updates**: Updated all documentation
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### Wave 3 (Sequential - 1 agent):
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7. **Container Removal & Deployment**: Archive and final verification
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## Agents Used
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### Agent 1: Platform Feature Creator
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- Created complete feature structure
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- Converted Python to TypeScript
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- Implemented VIN decode with circuit breaker
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- Created unit and integration tests
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### Agent 2: VIN Migration - Backend
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- Migrated VIN decode from vehicles feature
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- Updated vehicles service to use platform
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- Removed external platform client
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### Agent 3: VIN Migration - Frontend
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- Updated API calls to `/api/platform/*`
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- Kept VIN decode functionality
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- Enhanced mobile responsiveness
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### Agent 4: Configuration Cleanup
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- Removed mvp-platform from docker-compose
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- Cleaned environment variables
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- Updated Makefile
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## Verification
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### Integration Points
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- Vehicles service calls `getVINDecodeService()` from platform feature (vehicles.service.ts:46, 229)
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- Platform routes registered in app.ts (app.ts:22, 110)
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- Frontend uses `/api/platform/vehicle?vin=X` for VIN decode
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- Frontend uses `/api/platform/years`, `/api/platform/makes`, etc. for dropdowns
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### Testing
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- Platform feature: Unit tests for VIN decode and vehicle data services
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- Platform feature: Integration tests for all API endpoints
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- Vehicles feature: Updated tests to mock platform service
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### Performance
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- VIN decode: < 500ms with cache
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- Dropdown APIs: < 100ms with cache
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- Redis cache hit rate: Target >80% after warm-up
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## API Endpoint Changes
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### Old Endpoints (Deprecated)
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```
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POST /api/vehicles/decode-vin
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GET /api/vehicles/dropdown/years
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GET /api/vehicles/dropdown/makes?year={year}
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GET /api/vehicles/dropdown/models?year={year}&make_id={id}
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```
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### New Endpoints (Active)
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```
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GET /api/platform/vehicle?vin={vin}
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GET /api/platform/years
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GET /api/platform/makes?year={year}
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GET /api/platform/models?year={year}&make_id={id}
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GET /api/platform/trims?year={year}&model_id={id}
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GET /api/platform/engines?year={year}&trim_id={id}
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```
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## User Experience Changes
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### Before Migration
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- VIN decode: Required separate platform service
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- Manual selection: Dropdowns via vehicles API
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- Limited mobile optimization
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### After Migration
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- VIN decode: Integrated platform feature with circuit breaker resilience
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- Manual selection: Unified `/api/platform/*` endpoints
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- Dual workflow: Users can VIN decode OR manually select
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- Enhanced mobile: 44px touch targets, 16px fonts (no iOS zoom)
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## Rollback Plan
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If critical issues discovered:
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1. Restore docker-compose.yml:
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```bash
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git restore docker-compose.yml
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```
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2. Restore platform service directory:
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```bash
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git restore mvp-platform-services/
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```
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3. Rebuild containers:
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```bash
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docker compose down
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docker compose up -d
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```
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4. Revert code changes:
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```bash
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git revert HEAD~[n]
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```
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## Success Metrics
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- Container count: 5 (down from 6)
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- All automated tests: Passing
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- VIN decode response time: <500ms
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- Redis cache hit rate: >80% (after warm-up)
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- Zero errors in logs: After 1 hour runtime
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- Mobile + desktop: Both workflows functional
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- TypeScript compilation: Zero errors
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- Linter: Zero issues
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## Files Created
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### Backend
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- `backend/src/features/platform/` (14 files total)
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- API layer: routes, controller
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- Domain layer: VIN decode, vehicle data, cache services
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- Data layer: repository, vPIC client
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- Models: requests, responses
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- Tests: unit and integration
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- Documentation: README.md
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### Documentation
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- `docs/PLATFORM-INTEGRATION-MIGRATION.md` (this file)
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## Files Modified
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### Configuration
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- `docker-compose.yml` - Removed mvp-platform service
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- `.env` - Removed platform URL
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- `config/app/production.yml` - Removed platform config
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- `Makefile` - Updated to 5-container architecture
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### Backend
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- `backend/src/app.ts` - Registered platform routes
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- `backend/src/features/vehicles/domain/vehicles.service.ts` - Uses platform VIN decode
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- `backend/src/features/vehicles/tests/unit/vehicles.service.test.ts` - Updated mocks
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### Frontend
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- `frontend/src/features/vehicles/api/vehicles.api.ts` - Updated endpoints
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- `frontend/src/features/vehicles/components/VehicleForm.tsx` - Mobile enhancements
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### Documentation
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- `README.md` - Updated to 5 containers
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- `CLAUDE.md` - Updated architecture description
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- `docs/README.md` - Updated container count and feature list
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## Files Deleted
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### Backend
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- `backend/src/features/vehicles/external/platform-vehicles/` (entire directory)
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- `backend/src/features/vehicles/domain/platform-integration.service.ts`
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- `backend/src/features/vehicles/external/vpic/` (moved to platform)
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- `backend/src/features/vehicles/tests/unit/vpic.client.test.ts`
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## Future Considerations
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### Potential Enhancements
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- Batch VIN decode endpoint
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- Alternative VIN decode APIs (CarMD, Edmunds)
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- Part number lookups
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- Service bulletin integration
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- Recall information integration
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- Admin cache invalidation endpoints
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### Monitoring
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- Track cache hit rates
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- Monitor circuit breaker state transitions
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- Log slow queries (>200ms)
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- Alert on high error rates
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- Dashboard for vPIC API health
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## Related Documentation
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- Platform Feature README: `backend/src/features/platform/README.md`
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- Architecture Overview: `docs/PLATFORM-SERVICES.md`
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- Vehicles Feature: `backend/src/features/vehicles/README.md`
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- API Documentation: Platform README contains complete API reference
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---
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**Migration Status**: COMPLETE
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The platform service has been successfully integrated into the backend as a feature module. The architecture now runs with 5 containers instead of 6, with all platform logic accessible via `/api/platform/*` endpoints.
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