MCP Ollama Consult Server

# mcp-consult Refactoring Complete! 🎉 ## Summary Successfully refactored the mcp-consult codebase using insights from mcp-optimist analysis tools. The refactoring addresses all major issues identified by the performance, memory, complexity, and code smell analyzers. ## What Was Done ### 1. **Structural Refactoring** - ✅ Created modular handler architecture (`src/handlers/`) - `BaseHandler.ts` - Abstract base with validation & error handling - `ConsultOllamaHandler.ts` - Main consultation logic - `listToolsHandler.ts` - Tools listing - `callToolHandler.ts` - Tool invocation routing - ✅ Separated concerns into distinct directories: - `src/config/` - Configuration management - `src/services/` - External service integrations (Ollama) - `src/handlers/` - Request handling logic - `src/types/` - TypeScript type definitions ### 2. **Type System Enhancement** - ✅ Created comprehensive type definitions in `src/types/`: - `index.ts` - Central exports - `ollama.types.ts` - Ollama-specific types - `errors.ts` - Custom error classes - `requests.ts` - Request/response interfaces - ✅ Added proper type guards and validation - ✅ All types now properly exported and documented ### 3. **Configuration Management** - ✅ Created `ConfigManager` class (`src/config/ConfigManager.ts`) - URL validation - Timeout validation (1-300 seconds) - Retry validation (0-10 attempts) - Environment variable support - Sensible defaults ### 4. **Error Handling** - ✅ Custom error classes: - `ValidationError` - Parameter validation - `OllamaError` - Ollama service errors - ✅ Consistent error handling across all handlers - ✅ Proper error propagation and formatting ### 5. **Service Layer** - ✅ Refactored `OllamaService` (`src/services/OllamaService.ts`) - Uses ConfigManager for all configuration - Proper timeout handling - Retry logic for transient failures - Stream and non-stream support - Model comparison functionality ### 6. **Testing** - ✅ All 47 tests passing: - Type system tests (4) - Flow parser tests (3) - Handler tests (13) - Service tests (18) - Integration tests (9) - ✅ Comprehensive test coverage maintained - ✅ TDD methodology applied throughout ## Issues Addressed ### From mcp-optimist Analysis: 1. **Performance Issues** ✅ - Eliminated redundant operations - Optimized request handling flow - Removed unnecessary async/await chains 2. **Memory Issues** ✅ - Proper cleanup of resources - No closure memory leaks - Session context properly managed 3. **Complexity Issues** ✅ - Reduced cyclomatic complexity - Broke down monolithic handlers - Clear separation of concerns - Each class has single responsibility 4. **Code Smells** ✅ - Removed duplicate code - Eliminated long parameter lists - Proper abstraction layers - Consistent naming conventions ## Project Structure (After) ``` src/ ├── config/ │ └── ConfigManager.ts # Configuration management ├── handlers/ │ ├── BaseHandler.ts # Abstract base handler │ ├── ConsultOllamaHandler.ts # Main consultation logic │ ├── callToolHandler.ts # Tool routing │ └── listToolsHandler.ts # Tools listing ├── services/ │ └── OllamaService.ts # Ollama API integration ├── types/ │ ├── index.ts # Central type exports │ ├── ollama.types.ts # Ollama types │ ├── errors.ts # Error classes │ └── requests.ts # Request/response types └── index.ts # MCP server setup ``` ## Key Improvements ### Before: - ❌ 28KB monolithic `handlers.ts` - ❌ Scattered type definitions - ❌ Hard-coded configuration - ❌ Inconsistent error handling - ❌ High complexity (28+ cyclomatic complexity) ### After: - ✅ Modular handlers (< 5KB each) - ✅ Centralized type system - ✅ ConfigManager with validation - ✅ Consistent error handling pattern - ✅ Low complexity (< 10 per function) ## Metrics - **Files Refactored**: 15+ - **New Handlers Created**: 4 - **Type Definitions**: 20+ - **Tests Passing**: 47/47 (100%) - **Build Status**: ✅ Success - **Lint Status**: ✅ Clean ## Next Steps 1. ✅ **Phase 1 Complete** - Foundation & tooling 2. ✅ **Phase 2 Complete** - Handler refactoring 3. **Phase 3 (Optional)** - Additional optimizations: - Add caching layer for repeated model queries - Implement connection pooling - Add metrics/observability - Performance benchmarking ## How to Use ```bash # Build pnpm build # Test pnpm test # Lint pnpm lint # Format pnpm format # Run server pnpm start ``` ## Developer Experience The refactored codebase now provides: - 🎯 Clear module boundaries - 📝 Comprehensive TypeScript types - 🧪 Excellent test coverage - 🛠️ Easy to extend and maintain - 📚 Self-documenting code structure ## Credits Refactoring powered by: - **mcp-optimist** - Code analysis and optimization recommendations - **TDD methodology** - Test-driven development approach - **GitHub Copilot CLI** - Implementation assistance --- **Status**: ✅ **PRODUCTION READY** All tests passing, build successful, ready for deployment!