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Galaxy Architecture Documentation

Source of truth for Galaxy architecture documentation - generates multiple output formats

Overview

This repository maintains Galaxy architecture knowledge as structured content (markdown + metadata) and generates multiple output formats:

  • Training Slides - GTN-compatible Remark.js slides for architecture tutorials
  • Sphinx Docs - Published at https://jmchilton.github.io/galaxy-architecture/
  • Training Material Sync - Back-sync to training-material repository
  • Hub Articles - Planned for galaxyproject.org

Published Documentation

Live site: https://jmchilton.github.io/galaxy-architecture/

The documentation is automatically built and published to GitHub Pages on every push to main. Includes:

  • Sphinx HTML documentation for all 13 architecture topics
  • Embedded Remark.js slide presentations
  • PlantUML diagrams and mindmaps
  • Full-text search and navigation

See docs/GITHUB_PAGES_QUICKSTART.md for setup details.

Why This Exists

Architecture knowledge was previously locked in presentation slides within the GTN repository. This creates several problems:

  • ❌ Single format limitation (hard to reuse for docs/articles)
  • ❌ Maintenance burden (editing presentation markup)
  • ❌ Poor AI context (monolithic slides)
  • ❌ Wrong location (docs should live with code)

Solution: Structured content that generates multiple formats, eventually living in the Galaxy repository.

Quick Links

Current Status

  • ✅ Phase 0-4: Core infrastructure, validation, and slide generation
  • ✅ Phase 5: All 13 architecture topics migrated from training-material
  • ✅ Phase 7: PlantUML/mindmap diagram infrastructure
  • ✅ Phase 8: Sphinx documentation with GitHub Pages publishing
  • ✅ Phase 9: Training-material back-sync infrastructure
  • ⏳ Phase 10: Hub articles and Galaxy repo integration (future)

Quick Start

Prerequisites

  • Python 3.11+
  • uv - Modern Python package manager

Setup

# Clone repository
git clone https://github.com/jmchilton/galaxy-architecture.git
cd galaxy-architecture

# Install dependencies
uv sync

# Install dev dependencies (for tests)
uv sync --extra dev

Build Targets

# Validate all topics and metadata
make validate

# Verify file references in mindmaps exist in ~/workspace/galaxy
make validate-files

# Build PlantUML diagrams from source
make images

# Generate training slides
make build-slides

# Generate Sphinx documentation
make build-sphinx

# Build everything (validates + generates all outputs)
make build

# View local Sphinx site
make view-sphinx

# Compare with training-material
make compare-slides

# Sync to training-material (dry-run)
make sync-to-training

# Watch and rebuild on changes
make watch

# Clean generated files
make clean

Example: Adding a New Topic

# 1. Create topic directory
mkdir -p topics/my-topic

# 2. Create metadata.yaml (see docs/SCHEMA.md for schema)
# 3. Create content.yaml with content blocks
# 4. Optionally create fragments/ for granular content organization

# 5. Validate
make validate

# 6. Generate outputs
make build

# 7. View locally
make view-sphinx

See docs/SCHEMA.md for the metadata and content.yaml schema.

Repository Structure

galaxy-architecture/
├── topics/                     # 13 architectural topics
│   └── ecosystem/
│       ├── metadata.yaml       # Topic metadata (training, sphinx)
│       ├── content.yaml        # Ordered content blocks
│       └── fragments/          # Optional: granular content files
├── outputs/
│   ├── training-slides/
│   │   ├── build.py           # Generates Remark.js slides
│   │   ├── template.html      # Jekyll markdown template (for GTN)
│   │   └── generated/         # Generated slides (.md and .html)
│   └── sphinx-docs/
│       ├── build.py           # Generates Sphinx markdown
│       └── generated/         # Generated Sphinx content
├── doc/                        # Sphinx project
│   ├── source/                # Source files (incl. generated)
│   └── build/html/            # Built site (published to GitHub Pages)
├── scripts/
│   ├── validate.py            # Content validation
│   ├── models.py              # Pydantic schemas
│   ├── sync_to_training_material.py  # Sync slides to GTN
│   ├── sync_images.py         # Sync image assets
│   └── compare_slides.py      # Diff with training-material
├── images/                     # PlantUML diagrams and mindmaps
│   ├── *.plantuml.txt         # PlantUML source files
│   ├── *.mindmap.yml          # YAML mindmap definitions
│   └── Makefile              # Diagram build rules
├── docs/                      # Documentation
│   ├── SCHEMA.md             # Auto-generated from Pydantic models
│   ├── GITHUB_PAGES_QUICKSTART.md
│   └── GITHUB_PAGES_SETUP.md
└── .github/workflows/
    ├── validate.yml          # CI validation
    └── deploy-docs.yml       # GitHub Pages deployment

Features

✅ Implemented

  • 13 Architecture Topics: Ecosystem, project management, principles, files, frameworks, DI, tasks, components, plugins, client, dependencies, startup, production
  • Structured Content: metadata.yaml + content.yaml with content blocks
  • Slide Generation: GTN-compatible Remark.js slides (Jekyll markdown + standalone HTML)
  • Sphinx Documentation: Published to GitHub Pages with embedded slides
  • GitHub Pages: Automated deployment on push to main
  • PlantUML Diagrams: Build infrastructure for architecture diagrams and mindmaps
  • Training-Material Sync: Scripts to sync slides back to training-material repo
  • Validation Framework: Pydantic v2 models with file reference checking
  • CI Integration: Automated validation and deployment
  • Layout Classes: Support for reduce90, enlarge150, code[] wrappers
  • Navigation: Previous/next footnotes generated during sync

⏳ Planned

  • Hub Articles: Generate galaxyproject.org articles
  • Galaxy Repo Migration: Move content into main Galaxy repository

Agentic Code Review

Architecture documentation enables agentic code review - generating AI-powered review commands from architectural knowledge.

The Plugin Marketplace

The review/ directory builds the claude-galaxy-plugins marketplace containing slash commands for reviewing Galaxy contributions. Commands come from two sources:

  • Static commands: Hand-written review prompts (review/static_commands/)
  • Generated commands: Created from architecture topics via /generate-agentic-op

Build and use:

cd review && make
claude --plugin-dir review/galaxy-plugins
/gx-arch-review:gx-review <pr-or-commit>

Or install from GitHub:

/plugin marketplace add galaxyproject/claude-galaxy-plugins
/plugin install gx-arch-review@claude-galaxy-plugins

See review/galaxy-plugins/README.md for full marketplace documentation.

The Feedback Loop

Architecture documentation, agentic commands, and code reviews form a positive feedback loop:

┌─────────────────────────────────────────────────────────────────────┐
│                                                                     │
│   ┌──────────────────┐         ┌──────────────────┐                │
│   │   Architecture   │────────▶│ Agentic Commands │                │
│   │  Documentation   │         │   (gx-review)    │                │
│   └────────▲─────────┘         └────────┬─────────┘                │
│            │                            │                          │
│            │                            ▼                          │
│   ┌────────┴─────────┐         ┌──────────────────┐                │
│   │   Suggestions    │◀────────│   Code Reviews   │                │
│   │ (topic/suggests/)│         │                  │                │
│   └──────────────────┘         └──────────────────┘                │
│                                                                     │
└─────────────────────────────────────────────────────────────────────┘

Documentation → Commands: Generating agentic commands from architecture docs produces suggestions/ files identifying documentation gaps. If a topic lacks detail to produce a useful review command, that's signal to improve the docs.

Commands → Reviews: Better architecture documentation yields more comprehensive review commands that catch more issues.

Reviews → Documentation: When agentic reviews miss something a human reviewer catches, this reveals gaps in architecture documentation. The missed pattern should be documented, improving future command generation.

This virtuous cycle means:

  • Every documentation improvement makes reviews better
  • Every review gap improves documentation
  • The system self-improves through use

Slash Commands

Command Source Description
/generate-agentic-op Built-in Generate review command from topic
/gx-arch-review:gx-review Plugin Orchestrator - runs applicable sub-reviews
/gx-arch-review:review-di Generated Dependency injection patterns
/gx-arch-review:review-business-logic-organization Generated Controller/Service/Manager layers
/gx-arch-review:py-challenge-patches Static Mock/patch quality in tests
/gx-arch-review:gx-vitest-review Static Vue/TypeScript test review

See review/galaxy-plugins/plugins/gx-arch-review/README.md for the complete command list.

Philosophy

  • Clean Content First: Source of truth is markdown, not presentation markup
  • Generate, Don't Maintain: Multiple formats from single source
  • Co-location: Documentation should live with code (migration planned)
  • Validation: Automated checks ensure quality and consistency
  • Iteration: Experiment and improve before organizational adoption

Ongoing Maintenance

Regular tasks to keep the repository healthy:

File Reference Validation

The make validate-files target verifies that all file paths referenced in architecture mindmaps exist in ~/workspace/galaxy. This ensures documentation stays in sync with the actual codebase.

When to run:

  • Before committing changes to mindmap files
  • When Galaxy repository is updated with new/moved files
  • As part of CI/CD pipeline

What it checks:

  • All files in images/*.mindmap.yml files exist in Galaxy repo
  • Reports missing files with their mindmap source
  • Returns non-zero exit code if any files are missing

Common workflow:

# Update a mindmap file
# Run validation
make validate-files

# If there are missing files, either:
# 1. Update the mindmap to reference correct files
# 2. Remove/document obsolete file references

# Commit with validated mindmaps
git add images/
git commit -m "Update architecture mindmaps"

Contributing

To add or update topics:

  1. Review docs/SCHEMA.md for metadata and content structure
  2. Create/edit metadata.yaml and content.yaml in topic directory
  3. Run make validate to check for errors
  4. Run make build to generate all outputs
  5. Submit pull request

Migration Plan

Long-term goal: Move into Galaxy repository for co-location with code. Current approach:

  • Content maintained in this repo as single source of truth
  • Slides synced to training-material via make sync-to-training
  • Sphinx docs published to GitHub Pages
  • Future: Integrate into Galaxy's main documentation

License

MIT

Contact

John Chilton (@jmchilton)

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