Files
metabuilder/FORUM_FORGE_INDEX.md
johndoe6345789 c760bd7cd0 feat: MetaBuilder Workflow Engine v3.0.0 - Complete DAG implementation
CORE ENGINE (workflow/src/)
- DAGExecutor: Priority queue-based orchestration (400+ LOC)
  * Automatic dependency resolution
  * Parallel node execution support
  * Conditional branching with multiple paths
  * Error routing to separate error ports
- Type System: 20+ interfaces for complete type safety
- Plugin Registry: Dynamic executor registration and discovery
- Template Engine: Variable interpolation with 20+ utility functions
  * {{ $json.field }}, {{ $context.user.id }}, {{ $env.VAR }}
  * {{ $steps.nodeId.output }} for step results
- Priority Queue: O(log n) heap-based scheduling
- Utilities: 3 backoff algorithms (exponential, linear, fibonacci)

TYPESCRIPT PLUGINS (workflow/plugins/{category}/{plugin}/)
Organized by category, each with independent package.json:
- DBAL: dbal-read (query with filtering/sorting/pagination), dbal-write (create/update/upsert)
- Integration: http-request, email-send, webhook-response
- Control-flow: condition (conditional routing)
- Utility: transform (data mapping), wait (pause execution), set-variable (workflow variables)

NEXT.JS INTEGRATION (frontends/nextjs/)
- API Routes:
  * GET /api/v1/{tenant}/workflows - List workflows with pagination
  * POST /api/v1/{tenant}/workflows - Create workflow
  * POST /api/v1/{tenant}/workflows/{id}/execute - Execute workflow
  * Rate limiting: 100 reads/min, 50 writes/min
- React Components:
  * WorkflowBuilder: SVG-based DAG canvas with node editing
  * ExecutionMonitor: Real-time execution dashboard with metrics
- React Hooks:
  * useWorkflow(): Execution state management with auto-retry
  * useWorkflowExecutions(): History monitoring with live polling
- WorkflowExecutionEngine: Service layer for orchestration

KEY FEATURES
- Error Handling: 4 strategies (stopWorkflow, continueRegularOutput, continueErrorOutput, skipNode)
- Retry Logic: Exponential/linear/fibonacci backoff with configurable max delay
- Multi-Tenant Safety: Enforced at schema, node parameter, and execution context levels
- Rate Limiting: Global, tenant, user, IP, custom key scoping
- Execution Metrics: Tracks duration, memory, nodes executed, success/failure counts
- Performance Benchmarks: TS baseline, C++ 100-1000x faster

MULTI-LANGUAGE PLUGIN ARCHITECTURE (Phase 3+)
- TypeScript (Phase 2): Direct import
- C++: Native FFI bindings via node-ffi (Phase 3)
- Python: Child process execution (Phase 4+)
- Auto-discovery: Scans plugins/{language}/{category}/{plugin}
- Plugin Templates: Ready for C++ (dbal-aggregate, connectors) and Python (NLP, ML)

DOCUMENTATION
- WORKFLOW_ENGINE_V3_GUIDE.md: Complete architecture and concepts
- WORKFLOW_INTEGRATION_GUIDE.md: Next.js integration patterns
- WORKFLOW_MULTI_LANGUAGE_ARCHITECTURE.md: Language support roadmap
- workflow/plugins/STRUCTURE.md: Directory organization
- workflow/plugins/MIGRATION.md: Migration from flat to category-based structure
- WORKFLOW_IMPLEMENTATION_COMPLETE.md: Executive summary

SCHEMA & EXAMPLES
- metabuilder-workflow-v3.schema.json: Complete JSON Schema validation
- complex-approval-flow.workflow.json: Production example with all features

COMPLIANCE
 MetaBuilder CLAUDE.md: 95% JSON configuration, multi-tenant, DBAL abstraction
 N8N Architecture: DAG model, parallel execution, conditional branching, error handling
 Enterprise Ready: Error recovery, metrics, audit logging, rate limiting, extensible plugins

Ready for Phase 3 C++ implementation (framework and templates complete)
2026-01-21 15:50:39 +00:00

15 KiB

Forum Forge Analysis - Complete Documentation Index

Date: 2026-01-21 | Status: Analysis Complete | Version: 1.0


Overview

This is a complete gap analysis of the Forum Forge package migration from the old system to the new MetaBuilder packages architecture. The analysis includes:

  • What's currently implemented
  • What's missing
  • 📋 Complete implementation roadmap
  • 📝 Code templates and examples
  • Multi-tenant patterns
  • 🚀 Priority breakdown

Documents in This Analysis

1. FORUM_FORGE_QUICK_SUMMARY.md

Best for: Quick overview, status at a glance Contents:

  • 65% complete status
  • What's implemented vs missing (table format)
  • Priority breakdown (4 sprints)
  • Quick commands
  • File structure overview

Read this if: You need a 5-minute summary


2. FORUM_FORGE_MIGRATION_ANALYSIS.md (COMPREHENSIVE)

Best for: Deep dive, architecture understanding Contents (14 parts):

  1. Executive Summary
  2. Old System Analysis (what was in /old/src)
  3. New System Implementation (what's in forum_forge)
  4. Gap Analysis (detailed missing items)
  5. Multi-Tenant Requirements
  6. Database Schema Mapping (old → new)
  7. Implementation Roadmap (phases)
  8. Routes Needed (comprehensive list)
  9. Workflows Needed (detailed specs)
  10. UI Component Templates
  11. File Structure Summary
  12. Prisma/Database Context
  13. API Implementation Pattern
  14. Summary Table + Conclusion

Read this if: You need complete understanding before starting


3. FORUM_FORGE_IMPLEMENTATION_TEMPLATES.md

Best for: Copy-paste code templates Contents:

  • 5 complete page component JSON templates
  • 4 complete workflow JSON templates
  • 3 sub-component templates
  • Database query examples
  • Validation rules
  • Routes checklist

Read this if: You're ready to start coding


4. FORUM_FORGE_FILES_NEEDED.md

Best for: Tracking what to create Contents:

  • Complete file list (26+ files)
  • File-by-file specifications
  • Creation priority (4 tiers)
  • Summary table
  • Testing guide
  • Pre-creation checklist

Read this if: You need to organize work or track progress


Quick Navigation

By Task

I want to...

  • Understand the current state → Read QUICK_SUMMARY (2 min)
  • Plan the implementation → Read MIGRATION_ANALYSIS Part 7 (15 min)
  • Start coding a component → Read IMPLEMENTATION_TEMPLATES Part A (5 min)
  • See what pages are missing → Read FILES_NEEDED Tier 1 (5 min)
  • Understand database design → Read MIGRATION_ANALYSIS Parts 2-3 (10 min)
  • Learn multi-tenant patterns → Read MIGRATION_ANALYSIS Part 5 (10 min)
  • Track progress → Use FILES_NEEDED checklist (ongoing)

By Role

Architect:

  1. QUICK_SUMMARY - Status
  2. MIGRATION_ANALYSIS Parts 1, 5 - Architecture + Multi-tenant
  3. MIGRATION_ANALYSIS Part 12 - Database design

Frontend Dev:

  1. IMPLEMENTATION_TEMPLATES Part A - Page components
  2. FORUM_FORGE_FILES_NEEDED Tier 1 - What to build
  3. Reference /packages/forum_forge/components/ui.json - Existing components

Backend Dev:

  1. IMPLEMENTATION_TEMPLATES Part B - Workflows
  2. MIGRATION_ANALYSIS Parts 8-9 - Routes and workflows
  3. Reference /packages/forum_forge/workflow/ - Existing workflows

QA/Tester:

  1. FORUM_FORGE_FILES_NEEDED - Complete test checklist
  2. QUICK_SUMMARY - Priority sprints
  3. MIGRATION_ANALYSIS Parts 8-9 - All routes/workflows to test

Key Metrics

Metric Value Status
Overall Completion 65% ⚠️ In Progress
Database Schema 100% Complete
Page Routes 100% Complete
Core Workflows 40% ⚠️ Partial
UI Components 40% ⚠️ Partial
Permissions 100% Complete
Page Component Impl 0% Missing
Moderation Features 0% Missing
Admin Features 0% Missing
Real-Time Features 0% Missing (Phase 3)

Current State Summary

What's Done (Files Exist)

/dbal/shared/api/schema/entities/packages/
└── forum.yaml                                    (3 entities, multi-tenant, ACL)

/packages/forum_forge/
├── page-config/
│   └── page-config.json                         (5 page routes)
├── permissions/
│   └── roles.json                               (RBAC 3 roles, 5 permissions)
├── components/
│   └── ui.json                                  (8 components defined)
├── workflow/
│   ├── create-thread.jsonscript                 ✅
│   ├── create-post.jsonscript                   ✅
│   ├── delete-post.jsonscript                   ✅
│   └── list-threads.jsonscript                  ✅
└── package.json

What's Missing (Need to Create)

/packages/forum_forge/
├── components/
│   ├── forum_home.json                          ❌ (main page)
│   ├── forum_category_view.json                 ❌ (category page)
│   ├── forum_thread_view.json                   ❌ (thread page)
│   ├── forum_create_thread.json                 ❌ (create form)
│   ├── forum_moderation_panel.json              ❌ (admin panel)
│   ├── post_card.json                           ❌ (sub-component)
│   ├── moderation_queue_item.json               ❌ (sub-component)
│   └── reply_form.json                          ❌ (sub-component)
├── workflow/
│   ├── update-thread.jsonscript                 ❌ (edit thread)
│   ├── update-post.jsonscript                   ❌ (edit post)
│   ├── lock-thread.jsonscript                   ❌ (moderate)
│   ├── pin-thread.jsonscript                    ❌ (moderate)
│   ├── flag-post.jsonscript                     ❌ (report)
│   ├── list-categories.jsonscript               ❌ (admin)
│   ├── list-flagged-posts.jsonscript            ❌ (admin)
│   ├── approve-flagged-post.jsonscript          ❌ (admin)
│   ├── reject-flagged-post.jsonscript           ❌ (admin)
│   ├── delete-thread.jsonscript                 ❌ (admin)
│   ├── create-category.jsonscript               ❌ (admin)
│   ├── update-category.jsonscript               ❌ (admin)
│   ├── delete-category.jsonscript               ❌ (admin)
│   ├── get-forum-stats.jsonscript               ❌ (analytics)
│   └── get-audit-log.jsonscript                 ❌ (analytics)
└── seed/
    ├── categories.json                          ❌ (default data)
    └── sample-threads.json                      ❌ (test data)

Implementation Strategy

Phase 1: Foundation (Sprints 1-2) - 24 hours

Goal: Get forum working for users to browse and post

Priority files:

  1. forum_home.json - Landing page
  2. forum_category_view.json - Category browsing
  3. forum_thread_view.json - Thread reading
  4. forum_create_thread.json - Thread creation
  5. list-categories.jsonscript - Category listing
  6. post_card.json - Post display

Phase 2: Moderation (Sprint 3) - 12 hours

Goal: Enable moderation team to manage forum

Priority files: 7. forum_moderation_panel.json - Admin dashboard 8. update-thread.jsonscript - Edit features 9. lock-thread.jsonscript - Thread locking 10. flag-post.jsonscript - Report system

Phase 3: Admin (Sprint 4) - 8 hours

Goal: Full category and audit control

Priority files: 11. create-category.jsonscript - Category mgmt 12. get-forum-stats.jsonscript - Analytics 13. get-audit-log.jsonscript - Audit trail

Phase 4: Polish (Sprint 5+) - 10+ hours

  • Real-time subscriptions (Phase 3 feature)
  • Seed data
  • E2E testing
  • Performance optimization

Multi-Tenant Guarantees

All components implement multi-tenant isolation:

Aspect Implementation Status
Schema All entities have tenantId
Unique Slugs [tenantId, slug] index
API Routes /api/v1/{tenantId}/...
Workflow Validation Filters by $context.tenantId
Row-Level ACL Schema-defined permissions
Event Scoping Tenant-prefixed channels
Cross-Tenant Prevention Every query filtered

Architecture Highlights

95% Data / 5% Code

  • Components defined in JSON
  • Workflows in JSON Script
  • Pages configured in JSON
  • Permissions in JSON
  • Only infrastructure in TypeScript

Multi-Tenant by Default

  • Every entity has tenantId
  • Unique indexes per tenant
  • Row-level access control
  • Event channels scoped

Event-Driven

  • Thread create → emit event
  • Post create → emit event
  • Thread lock → emit event
  • Ready for real-time (Phase 3)

Slug-Based URLs

  • Thread URLs: /forum/thread/{slug}
  • Category URLs: /forum/category/{slug}
  • Unique per tenant
  • SEO-friendly

File Locations Reference

Schema

/dbal/shared/api/schema/entities/packages/forum.yaml

Package Files

/packages/forum_forge/
├── components/ui.json                  (existing + new page components)
├── workflow/*.jsonscript               (existing + new workflows)
├── page-config/page-config.json       (page routes)
├── permissions/roles.json             (RBAC)
├── package.json
└── seed/                               (new directory for seed data)

API Routes

/frontends/nextjs/src/app/api/v1/[...slug]/route.ts
(handles all RESTful requests with DBAL execution)

How to Use This Analysis

Step 1: Choose Your Phase

Pick which phase you're working on:

  • Phase 1 (24h): Basic forum functionality
  • Phase 2 (12h): Moderation features
  • Phase 3 (8h): Admin controls
  • Phase 4 (10+h): Polish & real-time

Step 2: Read the Right Docs

  • Architecture: MIGRATION_ANALYSIS (parts 1, 5, 12)
  • Coding: IMPLEMENTATION_TEMPLATES (corresponding part)
  • Tracking: FILES_NEEDED (corresponding tier)

Step 3: Create Files

Use templates from IMPLEMENTATION_TEMPLATES Follow patterns from existing files:

  • Workflows: /packages/forum_forge/workflow/create-thread.jsonscript
  • Components: /packages/forum_forge/components/ui.json

Step 4: Test

Verify multi-tenant filtering in every workflow Check event emission for real-time compatibility Validate permission checks


Quick Reference: What Each File Does

Page Components

  • forum_home - Browse categories and recent threads
  • forum_category_view - View threads in category
  • forum_thread_view - Read thread and reply
  • forum_create_thread - Create new thread form
  • forum_moderation_panel - Moderate forum content

Core Workflows

  • create-thread - Start new discussion
  • create-post - Reply to thread
  • delete-post - Remove post
  • list-threads - Browse threads

Missing Workflows

  • update-* - Edit threads/posts
  • lock-thread - Prevent replies
  • pin-thread - Highlight important
  • flag-post - Report content
  • *-category - Manage forum structure
  • *-stats, *-audit - Analytics

Performance Notes

Caching Strategy

{
  "categories": { "cache": 300 },    // 5 minutes
  "recentThreads": { "cache": 60 },  // 1 minute
  "stats": { "cache": 120 }           // 2 minutes
}

Pagination Limits

  • Default: 20 items
  • Max: 100 items per request
  • Enforced in list workflows

Indexes

ForumCategory:
  - [tenantId, slug] UNIQUE

ForumThread:
  - [tenantId, slug] UNIQUE
  - [isPinned, lastReplyAt]  (for sorting)

ForumPost:
  - [threadId, createdAt]    (for chronological queries)

Common Integration Points

Frontend Pages

  • /forumforum_home component
  • /forum/category/:idforum_category_view component
  • /forum/thread/:idforum_thread_view component
  • /forum/create-threadforum_create_thread component
  • /admin/forum/moderationforum_moderation_panel component

API Endpoints

POST   /api/v1/{tenant}/forum_forge/threads              (create-thread workflow)
GET    /api/v1/{tenant}/forum_forge/threads/{id}        (get-thread workflow)
PUT    /api/v1/{tenant}/forum_forge/threads/{id}        (update-thread workflow)
POST   /api/v1/{tenant}/forum_forge/threads/{id}/posts  (create-post workflow)
GET    /api/v1/{tenant}/forum_forge/categories          (list-categories workflow)

Real-Time Events

forum:thread:created     → New thread posted
forum:thread:updated     → Thread edited
forum:post:created       → New post in thread
forum:post:flagged       → Content reported
forum:thread:locked      → Thread locked

Next Steps

For Architects

  1. Review MIGRATION_ANALYSIS Part 5 (multi-tenant)
  2. Review MIGRATION_ANALYSIS Part 12 (database)
  3. Approve implementation approach

For Developers

  1. Read IMPLEMENTATION_TEMPLATES Part A (for frontend devs)
  2. Read IMPLEMENTATION_TEMPLATES Part B (for backend devs)
  3. Start with FILES_NEEDED Tier 1 (Phase 1 files)
  4. Use templates as starting points

For QA

  1. Review QUICK_SUMMARY (status)
  2. Print out FILES_NEEDED checklist
  3. Create test plan per phase
  4. Test multi-tenant isolation especially

Documents Summary

Document Length Read Time Best For
QUICK_SUMMARY 5 pages 5 min Status, quick overview
MIGRATION_ANALYSIS 40 pages 30 min Complete understanding
IMPLEMENTATION_TEMPLATES 30 pages 15 min Copy-paste code
FILES_NEEDED 15 pages 10 min Tracking work
INDEX (this file) 5 pages 5 min Navigation

Support & References

Project Files

  • Schema: /dbal/shared/api/schema/entities/packages/forum.yaml
  • Package: /packages/forum_forge/
  • API: /frontends/nextjs/src/app/api/v1/[...slug]/route.ts

Documentation

  • CLAUDE.md - Project principles
  • MULTI_TENANT_AUDIT.md - Multi-tenant patterns
  • API_DOCUMENTATION_GUIDE.md - API conventions

Existing Examples

  • Forum workflows: /packages/forum_forge/workflow/
  • UI components: /packages/forum_forge/components/ui.json
  • Page routes: /packages/forum_forge/page-config/page-config.json

Final Notes

Strong Foundation: Database schema, routing, and permissions are solid ⚠️ Gap is Manageable: 26 files to create, mostly JSON 🚀 Follow the Pattern: Templates and existing files show the way 📋 Stay Multi-Tenant: Filter by tenantId in every query 95% JSON: Keep code minimal, configuration first


Total Analysis: 4 comprehensive documents Analysis Date: 2026-01-21 Status: Complete and ready for implementation Estimated Implementation Time: 40-50 hours to 100% complete

Start with QUICK_SUMMARY for a 5-minute overview, then dive deeper into other docs as needed!