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metabuilder/workflow/docs/WORKFLOW_DOCUMENTATION_INDEX.md
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git 28ab35ba46 chore(docs): reorganize - move subproject docs to their homes (Phase 1) 
Moves 45 documentation files from centralized /docs/ to subproject directories
following proximity-based organization principle. All moves use git mv to preserve history.

Changes:
- workflow/ docs: Move 27 files from docs/workflow/ to workflow/docs/
  - DAG executor docs, workflow compliance, executor analysis, loaderv2 guides, etc.
  - Result: workflow/docs/ now has 27 files

- dbal/ docs: Move 11 files from docs/dbal/ to dbal/docs/
  - DBAL architecture, analysis, integration, and workflow integration docs
  - Result: dbal/docs/ now has 18 files (11 new + 7 pre-existing)

- gameengine/ docs: Move 7 files from docs/gameengine/ to gameengine/docs/
  - GameEngine compliance audits, packages, Quake3, soundboard, engine tester
  - Result: gameengine/docs/ now has 20 files (7 new + 13 pre-existing)

Benefits:
- Docs are now closer to their code (easier to keep in sync)
- Reduces /docs/ clutter
- Establishes pattern for per-subproject documentation
- All git history preserved via git mv

Next phases:
- Phase 2: Move package-specific docs to /packages/{id}/docs/
- Phase 3: Separate N8N compliance docs by scope
- Phase 4: Organize UI documentation
- Phase 5: Create cross-project indices

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
2026-01-23 17:22:58 +00:00

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# Workflow Service Documentation Index
**Last Updated**: 2026-01-22
**Analyst**: Claude Code
**Comprehensive Analysis**: ✅ Complete
---
## Quick Start
### For Understanding the Service
Start here → [`WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md`](./WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md)
- Executive summary
- Architecture overview
- Current state (40% complete)
- Next steps
### For Implementation
Start here → [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md)
- Complete class implementation (copy-paste ready)
- Integration points with exact code
- Usage examples
- Testing strategy
### For API Usage
Start here → [`WORKFLOW_ENDPOINTS_REFERENCE.md`](./WORKFLOW_ENDPOINTS_REFERENCE.md)
- All 3 endpoints documented
- Request/response examples
- cURL examples
- Error responses
### For Deep Dive
Start here → [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md)
- Service architecture (methods, parameters, types)
- Middleware integration
- Error handling patterns
- Multi-tenant support status
- Integration roadmap
- File inventory
- Current limitations
---
## Documents by Role
### For Architects/Managers
1. [`WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md`](./WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md) - Status and effort estimate
2. [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md) - Gap analysis and limitations
**Key metrics**:
- Current completion: 40%
- Lines of code needed: ~400 for WorkflowLoaderV2
- Effort estimate: 5-8 hours total
- Status: Ready to implement, no blockers
### For Backend Engineers
1. [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md) - Implementation guide
2. [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md) - Integration points section
3. [`WORKFLOW_ENDPOINTS_REFERENCE.md`](./WORKFLOW_ENDPOINTS_REFERENCE.md) - Test with examples
**Implementation order**:
1. Create WorkflowLoaderV2 class (2-3 hrs)
2. Integrate into execute route (30 min)
3. Implement DBAL methods (1-2 hrs)
4. Test and polish (1-2 hrs)
### For Frontend Engineers
1. [`WORKFLOW_ENDPOINTS_REFERENCE.md`](./WORKFLOW_ENDPOINTS_REFERENCE.md) - Complete API docs
2. [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md) - Error handling section
**Key info**:
- 3 endpoints available (list, create, execute)
- Rate limits: 100/min for list, 50/min for mutations
- Auth required (all endpoints)
- Error codes documented with examples
### For DevOps/SRE
1. [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md) - Performance considerations
2. [`WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md`](./WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md) - Scaling bottleneck
**Critical info**:
- Rate limiting: In-memory (single instance only)
- Redis recommended for multi-instance
- Execution: Synchronous (needs async for long workflows)
- Database: Multi-tenant filtering required on all queries
---
## Document Organization
```
WORKFLOW_SERVICE_DOCUMENTATION_INDEX.md (this file)
├─ WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md (START HERE)
│ ├─ Executive summary
│ ├─ Architecture overview
│ ├─ 40% complete assessment
│ ├─ Next steps
│ └─ Links to detailed docs
│
├─ WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md (IMPLEMENTATION GUIDE)
│ ├─ Complete class code (ready to copy-paste)
│ ├─ Integration points
│ ├─ Error mapping
│ ├─ Usage examples
│ ├─ Testing strategy
│ └─ Migration path
│
├─ WORKFLOW_ENDPOINTS_REFERENCE.md (API DOCUMENTATION)
│ ├─ All 3 endpoints
│ ├─ Request/response specs
│ ├─ cURL examples
│ ├─ JavaScript examples
│ ├─ Error responses
│ ├─ Rate limiting info
│ ├─ Authentication
│ └─ Troubleshooting
│
└─ NEXTJS_WORKFLOW_SERVICE_MAP.md (DETAILED REFERENCE)
├─ Service architecture
├─ All methods and signatures
├─ Middleware overview
├─ Database schema
├─ Error handling patterns
├─ Multi-tenant implementation
├─ Integration points for WorkflowLoaderV2
├─ Dependency map
├─ File inventory
├─ Current limitations (TODOs)
├─ Integration roadmap
├─ Type system
├─ Security considerations
├─ Performance considerations
└─ Testing strategy
```
---
## Service Overview
### Three-Layer Architecture
```
Next.js API Routes
↓
Middleware (Auth + Rate Limiting)
↓
Service Layer (WorkflowExecutionEngine)
↓
Execution Engine (@metabuilder/workflow)
↓
Database (DBAL - Placeholder Methods)
```
### Core Files
| File | Lines | Purpose | Status |
|------|-------|---------|--------|
| `workflow-service.ts` | 336 | Main service implementation | ✅ 80% done |
| `[tenant]/workflows/route.ts` | 314 | List/Create endpoints | ✅ Complete |
| `[workflowId]/execute/route.ts` | 178 | Execute endpoint | ✅ Complete |
| `auth-middleware.ts` | 172 | Authentication | ✅ Complete |
| `rate-limit.ts` | 316 | Rate limiting | ✅ Complete |
| **workflow-loader.ts** | ~400 | **TO CREATE** | ❌ Not yet |
---
## Endpoints Summary
### GET /api/v1/{tenant}/workflows
List workflows with filtering
- **Status**: ✅ Ready (returns empty - no DBAL)
- **Auth**: Level 1+
- **Rate**: 100/min
- **Query params**: limit, offset, category, tags, active
### POST /api/v1/{tenant}/workflows
Create new workflow
- **Status**: ✅ Ready (returns created - no persistence)
- **Auth**: Level 2+ (moderator)
- **Rate**: 50/min
- **Body fields**: name, description, category, nodes, edges, triggers, tags
### POST /api/v1/{tenant}/workflows/{id}/execute
Execute workflow
- **Status**: ✅ Ready (executes - can't load real workflows)
- **Auth**: Level 1+
- **Rate**: 50/min
- **Body fields**: triggerData, variables, request
---
## Implementation Phases
### Phase 1: WorkflowLoaderV2 (2-3 hours) 🔴 PRIORITY
**What**: Create validation and resolution layer
**Where**: `/frontends/nextjs/src/lib/workflow/workflow-loader.ts`
**Code**: See [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md)
**Why**: Critical blocker for real execution
### Phase 2: DBAL Integration (1-2 hours)
**What**: Implement database methods
**Where**: `workflow-service.ts` (6 methods)
**Code**: See "Integration Points" in [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md)
**Why**: Enables workflow persistence
### Phase 3: Execution Storage (1-2 hours)
**What**: Persist execution records
**Where**: New `execution.yaml` entity + DBAL integration
**Why**: Enables execution history and monitoring
### Phase 4: Advanced Features (3-5 hours)
**What**: Abort logic, secrets, async execution
**Why**: Production-ready features
---
## Critical Integration Points for WorkflowLoaderV2
### Point 1: Load Workflow
**Current**: `loadWorkflow()` returns null (line 223-238)
**Change**: Call DBAL with tenantId filter
**Reference**: [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md) - loadFromDatabase() method
### Point 2: Validate Schema
**Current**: No validation before execution
**Change**: Add loader.load() in execute route (before engine.executeWorkflow())
**Reference**: [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md) - Integration Points section
### Point 3: Resolve Nodes
**Current**: Runtime error if node type unknown
**Change**: Pre-resolve in loader, return specific errors
**Reference**: [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md) - resolveNodes() method
---
## File Locations Quick Reference
### Service Files
- **Main**: `/frontends/nextjs/src/lib/workflow/workflow-service.ts`
- **Index**: `/frontends/nextjs/src/lib/workflow/index.ts`
- **To create**: `/frontends/nextjs/src/lib/workflow/workflow-loader.ts`
### API Routes
- **List/Create**: `/frontends/nextjs/src/app/api/v1/[tenant]/workflows/route.ts`
- **Execute**: `/frontends/nextjs/src/app/api/v1/[tenant]/workflows/[workflowId]/execute/route.ts`
### Middleware
- **Auth**: `/frontends/nextjs/src/lib/middleware/auth-middleware.ts`
- **Rate Limit**: `/frontends/nextjs/src/lib/middleware/rate-limit.ts`
### Database
- **Schema YAML**: `/dbal/shared/api/schema/entities/core/workflow.yaml`
- **Schema JSON**: `/schemas/package-schemas/workflow.schema.json`
- **DBAL Client**: `/frontends/nextjs/src/lib/db-client.ts`
---
## Current State Assessment
### What Works ✅
- Authentication (permission level checks)
- Rate limiting (per IP, sliding window)
- Multi-tenant structure (route params, validation)
- API route structure (Express-like)
- Error handling framework
- Type safety (TypeScript)
- DAG execution (via @metabuilder/workflow)
### What's Missing ❌
- Database loading (all methods placeholder)
- Schema validation (no WorkflowLoaderV2)
- Execution storage (no persistence)
- Secrets management
- Abort logic
- Node executor registration
- Distributed rate limiting (needs Redis)
### What Needs Fix ⚠️
- Permission mismatch (API allows level 1, schema requires admin)
- In-memory rate limiting (single instance only)
- Synchronous execution (blocks for long workflows)
- No caching layer
---
## Success Criteria for WorkflowLoaderV2
- [ ] Workflows validated before execution
- [ ] Invalid workflows return 400 with schema errors
- [ ] Unknown node types caught with specific error code
- [ ] Caching reduces database queries
- [ ] All error codes map to appropriate HTTP status
- [ ] Multi-tenant filtering enforced
- [ ] Tests pass (unit + integration + E2E)
- [ ] Zero regressions
---
## Key Metrics
### Lines of Code
- Current implementation: 1,316 lines
- Missing (WorkflowLoaderV2): ~400 lines
- Total when complete: ~1,650 lines
### Methods
- Implemented: 7 of 9
- Placeholders: 2 (loadWorkflow, saveExecutionRecord, etc)
### Endpoints
- Implemented: 3
- Planned: 4+
### Types
- Imported: 10 from @metabuilder/workflow
- Custom: 4
---
## Common Questions
### Q: Why is the service only 40% complete?
A: Database integration, validation layer, and execution storage are missing. The infrastructure (auth, routing, error handling) is complete.
### Q: When can this run real workflows?
A: After WorkflowLoaderV2 integration (2-3 hours) + DBAL implementation (1-2 hours).
### Q: What happens if I execute a workflow now?
A: It loads null from database, then DAGExecutor fails with "workflow not found" error.
### Q: Where should I start?
A: Create WorkflowLoaderV2 class in `/frontends/nextjs/src/lib/workflow/workflow-loader.ts` using code from [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md).
### Q: Is multi-tenant support working?
A: Partially. Routes validate tenantId, but database queries aren't implemented (placeholders).
### Q: Can this scale to production?
A: Not yet. Rate limiting is in-memory (needs Redis), execution is synchronous (needs async queue).
---
## Document Statistics
| Document | Lines | Focus | Audience |
|----------|-------|-------|----------|
| SUMMARY | 350 | Executive overview | Managers, Architects |
| LOADERV2 GUIDE | 450 | Implementation | Engineers |
| ENDPOINTS | 600 | API documentation | Frontend, Testers |
| SERVICE MAP | 750 | Technical details | Backend, System design |
**Total**: ~2,150 lines of comprehensive documentation
---
## Related Files (Not Modified)
- `/dbal/shared/api/schema/entities/core/workflow.yaml` - Workflow schema
- `/schemas/package-schemas/workflow.schema.json` - Validation schema
- `/frontends/nextjs/src/lib/db-client.ts` - DBAL client (wrapper)
- `@metabuilder/workflow` - Core execution engine
---
## Change Log
**2026-01-22**: Complete analysis and documentation
- Analyzed service architecture
- Created 4 comprehensive documents
- Identified all integration points
- Provided implementation roadmap
- Ready for development
---
## Next Action
**Immediate** (in priority order):
1. **Read** [`WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md`](./WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md) (15 min)
2. **Read** [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md) (20 min)
3. **Implement** WorkflowLoaderV2 class (2-3 hours)
4. **Test** with real workflows
---
## Contact & Support
For questions about:
- **Architecture**: See [`NEXTJS_WORKFLOW_SERVICE_MAP.md`](./NEXTJS_WORKFLOW_SERVICE_MAP.md)
- **API usage**: See [`WORKFLOW_ENDPOINTS_REFERENCE.md`](./WORKFLOW_ENDPOINTS_REFERENCE.md)
- **Implementation**: See [`WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md`](./WORKFLOW_LOADERV2_INTEGRATION_GUIDE.md)
- **Status/decisions**: See [`WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md`](./WORKFLOW_SERVICE_ANALYSIS_SUMMARY.md)
---
**Documentation Complete** ✅
**Ready for Implementation** 🚀
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