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**Table of Contents**

- [Marketplace-V2 Migration Planning Diagrams](#marketplace-v2-migration-planning-diagrams)
  - [Diagram Index](#diagram-index)
    - [1. C4 Architecture Diagrams](#1-c4-architecture-diagrams)
      - [🏢 **c4-context.puml** - System Context](#-c4-contextpuml---system-context)
      - [📦 **c4-container.puml** - Container Architecture](#-c4-containerpuml---container-architecture)
      - [🔧 **c4-component.puml** - Component Details](#-c4-componentpuml---component-details)
    - [2. Migration & Implementation Diagrams](#2-migration--implementation-diagrams)
      - [🛣️ **migration-strategy.puml** - 8-Phase Migration Workflow](#-migration-strategypuml---8-phase-migration-workflow)
      - [🔄 **api-refactor-sequence.puml** - API Refactor & Integration](#-api-refactor-sequencepuml---api-refactor--integration)
      - [❌ **error-resolution-plan.puml** - Error Resolution Strategy](#-error-resolution-planpuml---error-resolution-strategy)
    - [3. Testing & Validation Diagrams](#3-testing--validation-diagrams)
      - [🧪 **test-strategy.puml** - Comprehensive Testing](#-test-strategypuml---comprehensive-testing)
    - [4. Deployment & Release Diagrams](#4-deployment--release-diagrams)
      - [🚀 **deployment-plan.puml** - Release Pipeline](#-deployment-planpuml---release-pipeline)
      - [📅 **timeline-phases.puml** - Project Timeline](#-timeline-phasespuml---project-timeline)
    - [5. Reference Diagrams](#5-reference-diagrams)
      - [📊 **file-dependency-graph.puml** - File Dependencies](#-file-dependency-graphpuml---file-dependencies)
    - [6. Implementation Guide](#6-implementation-guide)
      - [📋 **MIGRATION_GUIDE.md** - Comprehensive Implementation](#-migration_guidemd---comprehensive-implementation)
  - [Quick Navigation](#quick-navigation)
    - [By Task Type](#by-task-type)
  - [Current Status](#current-status)
  - [How to Use These Diagrams](#how-to-use-these-diagrams)
  - [Diagram File Formats](#diagram-file-formats)
  - [Key Takeaways](#key-takeaways)

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# Marketplace-V2 Migration Planning Diagrams

**Location**: `/scripts/diagrams/marketplace-v2-migration/`

This directory contains comprehensive C4 and UML diagrams for planning the migration of marketplace-v2 from disabled state (128 compilation errors) to full production integration.

---

## Diagram Index

### 1. C4 Architecture Diagrams

#### 🏢 **c4-context.puml** - System Context
**Purpose**: Shows marketplace-v2 in relation to the overall ggen system

**Key Elements**:
- Developer & Publisher actors
- ggen CLI system (currently disabled)
- Marketplace-V2 system (not integrated)
- External systems: GitHub, RDF store, package server

**Use This Diagram When**: Explaining how marketplace-v2 fits into the larger architecture

**Key Insight**: The marketplace module is commented out in the CLI, blocking access despite being a complete, tested crate

---

#### 📦 **c4-container.puml** - Container Architecture
**Purpose**: Shows the internal containers/components of marketplace-v2 and their integration points

**Key Elements**:
- CLI Commands Module (DISABLED at line 15 of mod.rs)
- Registry Layer (RDF-backed storage)
- Search Engine (SPARQL queries)
- Installation System
- Security Layer (Ed25519 signatures)
- RDF Backend (oxigraph triplestore)
- Trait Definitions
- Test Suites (107 tests PASSING)

**Use This Diagram When**: Planning component-level integration strategies

**Key Insight**: All subsystems exist and pass tests, but CLI integration is the blocker

---

#### 🔧 **c4-component.puml** - Component Details
**Purpose**: Shows detailed module dependencies and component relationships

**Key Elements**:
- Data Model Layer (Package, Manifest, Ontology)
- Storage Layer (Registry trait, RdfRegistry, V3OptimizedRegistry)
- Query Layer (SearchEngine, SparqlSearchEngine, FST indexing)
- Operation Layer (Installation, Validation, Security)
- Support Systems (Builders, Migration, Error handling)

**Use This Diagram When**: Understanding which components need updates during migration

**Key Insight**: Well-structured modular design with clear trait boundaries makes systematic fixes possible

---

### 2. Migration & Implementation Diagrams

#### 🛣️ **migration-strategy.puml** - 8-Phase Migration Workflow
**Purpose**: High-level activity diagram showing the end-to-end migration from disabled to production

**Phases**:
1. Error Analysis & Root Cause (Analyze 128 errors)
2. CLI Module Integration (Uncomment and wire)
3. Fix Compilation Errors (Fix API, bounds, imports, deps)
4. Unit Test Validation (107 tests must pass)
5. CLI Command Integration (Implement 9 commands)
6. Integration Testing (End-to-end workflows)
7. Performance Validation (Benchmarks & SLOs)
8. Production Readiness (Audit, version bump, release)

**Use This Diagram When**: Planning the overall project timeline and phases

**Key Insight**: Clear separation of concerns with testable milestones at each phase

---

#### 🔄 **api-refactor-sequence.puml** - API Refactor & Integration
**Purpose**: Detailed sequence diagram showing how to fix compilation errors and integrate with CLI

**Phases**:
1. Identify errors by category (51 API, 38 bounds, 25 imports, 14 deps)
2. Fix CLI module integration (uncomment, verify discovery)
3. Fix trait bounds & generics (Send+Sync, HRTB)
4. Enable CLI module (pub mod marketplace)
5. Validate command bridge (async→sync)
6. Integration verification (all tests pass)
7. Production validation (full CI)

**Use This Diagram When**: Understanding specific compilation error patterns and fixes

**Key Insight**: Errors group into 4 main categories with systematic fixes for each

---

#### ❌ **error-resolution-plan.puml** - Error Resolution Strategy
**Purpose**: Systematic approach to fixing 128 compilation errors

**Error Categories**:
- **API Changes (51)**: Function signatures, method names
- **Trait Bounds (38)**: Send+Sync, lifetime constraints
- **Imports (25)**: Module paths, re-exports
- **Dependencies (14)**: Feature flags, version conflicts

**Resolution Priority**: P0 (blocking) → P1 (critical) → P2 (scope) → P3 (flags)

**Use This Diagram When**: Planning systematic error fixing

**Key Insight**: Errors have a natural dependency hierarchy - fix P0 first for maximum progress

---

### 3. Testing & Validation Diagrams

#### 🧪 **test-strategy.puml** - Comprehensive Testing
**Purpose**: Testing approach to validate marketplace-v2 throughout migration

**Test Phases**:
1. **Unit Testing**: 5 suites, 107 total tests (CURRENTLY PASSING)
   - Core (15), Registry (20), Search (22), Install (18), Security (16)
2. **Integration Testing**: End-to-end workflows
3. **Property Testing**: Generative test cases
4. **CLI Testing**: Command availability and functionality
5. **Performance Testing**: Benchmarks & SLO validation
6. **Security Testing**: Audit, signature verification, checksums
7. **Release Testing**: Version control and release process

**Use This Diagram When**: Planning testing strategy during migration

**Key Insight**: All 107 unit tests already pass - trust the existing tests

---

### 4. Deployment & Release Diagrams

#### 🚀 **deployment-plan.puml** - Release Pipeline
**Purpose**: Process for deploying marketplace-v2 to production

**Stages**:
1. Pre-deployment validation (CI, docs, release notes)
2. Version management (bump versions, update changelog)
3. Release branching & tagging (git operations)
4. CI/CD pipeline (automated testing)
5. Artifact generation (binaries, checksums, tarballs)
6. Distribution & announcement (package managers, docs)
7. Post-release monitoring (downloads, issues, hotfixes)

**Use This Diagram When**: Planning release and distribution strategy

**Key Insight**: Production-grade process with monitoring and hotfix support

---

#### 📅 **timeline-phases.puml** - Project Timeline
**Purpose**: Gantt chart showing project timeline for all 8 phases

**Phases**:
- Phase 1: Error Analysis (1d)
- Phase 2: CLI Setup (1d)
- Phase 3: Fix Errors (2d)
- Phase 4: Unit Tests (1d)
- Phase 5: CLI Integration (2d)
- Phase 6: Integration Tests (1d)
- Phase 7: Performance (1d)
- Phase 8: Production (1d)
- Phase 9: Monitoring (1d)

**Total Estimated**: 11-12 days

**Use This Diagram When**: Planning resource allocation and sprint planning

**Key Insight**: Well-distributed workload with daily milestones for tracking progress

---

### 5. Reference Diagrams

#### 📊 **file-dependency-graph.puml** - File Dependencies
**Purpose**: Shows which files are critical for migration and their dependencies

**Critical Files**:
- `crates/ggen-cli/src/cmds/mod.rs` (Line 15: BLOCKING)
- `crates/ggen-cli/src/cmds/marketplace.rs` (CLI commands)
- `crates/ggen-marketplace/src/lib.rs` (Core exports)
- Root `Cargo.toml` (Dependencies)

**Dependencies**:
- CLI commands depend on marketplace-v2 exports
- Marketplace-v2 depends on oxigraph, tokio, async-trait
- Tests validate all subsystems

**Use This Diagram When**: Understanding file structure and refactoring scope

**Key Insight**: Single point of failure at line 15 of cmds/mod.rs - uncomment to enable

---

### 6. Implementation Guide

#### 📋 **MIGRATION_GUIDE.md** - Comprehensive Implementation
**Purpose**: Step-by-step implementation guide with exact commands and code examples

**Contents**:
- Phase-by-phase breakdown with commands
- Error categorization and fixes
- Code examples for each error type
- Testing procedures and expected outputs
- Performance benchmarking targets
- Quick reference commands

**Use This Guide When**: Actually implementing the migration

**Key Insight**: Contains executable commands and code ready to copy/paste

---

## Quick Navigation

### By Task Type

**Understanding the Architecture**:
1. Start with `c4-context.puml` (overview)
2. Review `c4-container.puml` (components)
3. Examine `c4-component.puml` (details)

**Planning the Migration**:
1. Review `migration-strategy.puml` (phases)
2. Check `timeline-phases.puml` (timeline)
3. Examine `file-dependency-graph.puml` (critical files)

**Fixing Compilation Errors**:
1. Study `error-resolution-plan.puml` (categories)
2. Reference `api-refactor-sequence.puml` (fixes)
3. Use `MIGRATION_GUIDE.md` (commands)

**Validating the Migration**:
1. Review `test-strategy.puml` (testing)
2. Check `test-strategy.puml` (CLI testing)
3. Verify with actual commands in MIGRATION_GUIDE.md

**Releasing to Production**:
1. Follow `deployment-plan.puml` (release process)
2. Reference `timeline-phases.puml` (schedule)
3. Execute commands in MIGRATION_GUIDE.md

---

## Current Status

**Overall**: Marketplace-V2 is implementation-complete but integration-disabled

**What's Done**:
- ✅ Crate fully implemented with 25 completed phases
- ✅ 107 unit tests PASSING
- ✅ Comprehensive feature set (install, search, publish, etc.)
- ✅ RDF-backed semantic data store
- ✅ SPARQL query support
- ✅ Ed25519 signatures & security

**What's Needed**:
- ❌ Module enabled in CLI (line 15 of cmds/mod.rs - currently commented out)
- ❌ 128 compilation errors fixed
- ❌ CLI commands implemented in marketplace.rs
- ❌ End-to-end CLI integration tested
- ❌ Performance validated
- ❌ Released to production

**Blocking Issue**: 
Module is commented out at `crates/ggen-cli/src/cmds/mod.rs:15` with note "Pending v2 API migration (128 compilation errors)"

---

## How to Use These Diagrams

1. **For Understanding**: Read C4 diagrams in order (context → container → component)
2. **For Planning**: Review migration-strategy and timeline diagrams
3. **For Implementation**: Follow MIGRATION_GUIDE.md with diagrams as reference
4. **For Validation**: Use test-strategy and error-resolution diagrams to plan testing
5. **For Release**: Follow deployment-plan and timeline for release process

---

## Diagram File Formats

All diagrams are **PlantUML** format (.puml files). To view:

```bash
# Using PlantUML online (recommended):
# 1. Go to https://www.plantuml.com/plantuml/uml/
# 2. Paste file contents
# 3. Click "Submit"

# Or generate locally:
plantuml script/diagrams/marketplace-v2-migration/*.puml
```

---

## Key Takeaways

1. **Single Blocker**: Uncomment line 15 in `cmds/mod.rs` to enable CLI module discovery
2. **128 Errors**: Group into 4 categories (API, bounds, imports, deps) with systematic fixes
3. **Tests Pass**: All 107 unit tests already PASSING - implementation is solid
4. **Clear Path**: 8 phases with testable milestones provide clear implementation roadmap
5. **Production Ready**: Once integrated, system is ready for immediate production deployment

---

**Created**: 2024-01-XX  
**Purpose**: C4 architecture planning and implementation guidance for marketplace-v2 integration  
**Status**: Ready for implementation  
**Next Step**: Follow MIGRATION_GUIDE.md Phase 1 (Error Analysis)
