cube-ms/RELEASE-NOTES.md

Production-ready microservice framework with health monitoring, validation, error handling, and Docker Swarm support

# 🚀 Cube Microservice v2.0.0-beta.5 - Refined CLI & Template System

**Bug Fix Release** - Enhanced CLI experience, robust template system, and improved error handling

---

## 🔧 **What's Fixed in v2.0.0-beta.5**

### 🎯 **CLI Improvements**
- **✅ FIXED**: Step counter now shows correct 3/4, 4/4 instead of confusing 3/5, 4/5
- **✅ IMPROVED**: CCN registry setup now creates .npmrc.template automatically when missing
- **✅ ENHANCED**: Better error messages and graceful handling of missing files
- **✅ ADDED**: Comprehensive automated tests covering all CLI generation scenarios

### 🛠️ **Template System Overhaul**
- **✅ FIXED**: API template now includes all required scripts (setup-git-hooks.js, validate-env.js)
- **✅ ADDED**: Flexible postinstall-helper.js for graceful script execution
- **✅ IMPROVED**: Templates now handle missing dependencies without breaking installation
- **✅ ENHANCED**: Complete .env.example files for all templates

### 🔒 **Error Handling & Resilience**
- **✅ ROBUST**: Postinstall scripts now continue on errors instead of failing installation
- **✅ SMART**: Missing script detection with helpful fallback messages
- **✅ VALIDATED**: All templates tested for required files and script consistency
- **✅ SECURE**: Better handling of sensitive configuration files

---

## 🧪 **Testing Improvements**
- **NEW**: Comprehensive CLI generation test suite
- **COVERAGE**: All templates (basic, api) tested for consistency
- **VALIDATION**: Project name validation, error handling, and edge cases
- **RELIABILITY**: Automated tests prevent future template breakage

---

## 📦 **Updated Files**
- `bin/cube-ms.js` - Fixed step counter, improved .npmrc template creation
- `templates/api/scripts/setup-git-hooks.js` - Added missing Git hooks setup
- `templates/api/scripts/postinstall-helper.js` - New flexible postinstall system
- `templates/api/scripts/validate-env.js` - Added environment validation
- `templates/api/.env.example` - Complete environment configuration
- `templates/api/package.json` - Updated to use flexible postinstall
- `test/cli-generation.test.js` - New comprehensive CLI test suite

---

## 🎯 **Migration from v2.0.0-beta.4**
**✅ Zero Breaking Changes** - This is purely a bug fix release

**Improved User Experience:**
- CLI now shows correct step numbers
- Missing files no longer cause installation failures
- Better error messages guide users through setup
- CCN registry setup is more robust

---

# 🚀 Cube Microservice v2.0.0-beta.4 - Complete Multi-Database & Enterprise CLI

**Major Feature Release** - Full multi-database implementation, interactive CLI with TypeScript support, and comprehensive enterprise features

---

## 🎯 **What's New in v2.0.0-beta.4**

### 🗄️ **Multi-Database Architecture** (COMPLETE)
- **✨ NEW**: Complete multi-database manager with transaction support
- **🔗 Named Connections**: Access databases by logical names (primary, analytics, logs, etc.)
- **🔄 Cross-Database Transactions**: Multi-database transactions with automatic rollback
- **📊 Health Monitoring**: Individual database health checks and status aggregation
- **🔒 Security**: URL masking for sensitive connection strings
- **⚡ Performance**: Connection pooling and efficient resource management

```javascript
const service = CreateService({
  port: 3000,
  databases: {
    primary: {
      url: 'mongodb://localhost:27017/my_app',
      config: { description: 'Main application database' }
    },
    analytics: {
      url: 'mongodb://localhost:27017/analytics',
      config: { description: 'Analytics and reporting' }
    }
  }
});

// Cross-database transactions
await service.withDatabaseTransaction(['primary', 'analytics'], async (dbs, sessions) => {
  await dbs.primary.db.collection('orders').insertOne(order, { session: sessions.primary });
  await dbs.analytics.db.collection('metrics').insertOne(metrics, { session: sessions.analytics });
});
```

### 🚀 **Interactive CLI 2.0** (MAJOR UPGRADE)
- **🎯 4-Step Project Wizard**: Language → Port → Database → Template
- **🔵🟡 Language Support**: Full JavaScript/TypeScript support with auto-configuration
- **🗄️ Multi-Database Setup**: Interactive multi-database configuration wizard
- **📋 Project Validation**: Smart project name validation and conflict detection
- **⚡ Non-Interactive Mode**: Full command-line options for CI/CD

**Interactive Experience:**
```bash
🎯 Setting up your cube-ms project: my-app
1/4 Choose your programming language:
❯ 🟡 JavaScript  🔵 TypeScript

3/4 Configure database connection:
❯ 📦 Single Database
  🗄️ Multiple Databases - Connect to multiple MongoDB instances
```

### 🔵 **TypeScript First-Class Support** (NEW)
- **📁 Complete Project Generation**: Full TypeScript project scaffolding
- **⚙️ Auto-Configuration**: `tsconfig.json`, dependencies, build scripts
- **🔥 Hot Reload**: Development server with ts-node integration
- **🛠️ Build Tools**: Separate build, type-check, and development commands
- **🎯 Type Safety**: Generated code with proper type annotations

```bash
# Full TypeScript project creation
cube-ms create my-ts-app --language typescript

# TypeScript development workflow
npm run dev        # Hot reload with ts-node
npm run build      # Compile to JavaScript
npm run type-check # Type checking without compilation
```

### 🛠️ **Enhanced Development Experience**
- **🔧 Advanced Code Generation**: CRUD operations, API documentation generation
- **🐳 Environment Validation**: Docker Compose consistency checking
- **🚀 Pre-Deployment Validation**: Automated environment verification
- **🔗 Git Hooks Integration**: Quality enforcement with setup automation
- **📊 Enhanced Monitoring**: Performance tracking and health checks

### 🧪 **Comprehensive Testing Suite** (NEW)
- **8 New Test Files**: Complete test coverage for new components
- **🔄 Multi-Database Testing**: Transaction and health monitoring tests
- **🛡️ Security Testing**: Rate limiting and validation tests  
- **⚡ Performance Testing**: Monitoring and optimization tests
- **🎯 Integration Testing**: End-to-end workflow validation

---

## 📋 **New CLI Commands**

### **Environment & Validation**
```bash
cube-ms validate-docker                # Validate Docker Compose environments
cube-ms fix-env --docker-compose       # Auto-fix environment issues
cube-ms pre-deploy <environment>       # Pre-deployment validation
cube-ms setup-hooks                    # Setup Git hooks for quality enforcement
```

### **Enhanced Development**
```bash
cube-ms dev --minimal                  # Minimal mode (faster startup)
cube-ms dev --no-dashboard             # Disable development dashboard
cube-ms dev --no-security              # Disable security in development
cube-ms start --cluster                # Start with cluster mode
```

### **Code Generation**
```bash
cube-ms generate docs                  # Generate API documentation
cube-ms generate route user --crud     # Full CRUD API generation
```

---

## 🔧 **API Enhancements**

### **New Multi-Database Methods**
```javascript
// Get specific database
const primaryDb = await service.getDatabase('primary');

// Get multiple databases
const { primary, analytics } = await service.getDatabases(['primary', 'analytics']);

// Health monitoring
const health = await service.checkDatabaseHealth();
const stats = service.getDatabaseStats();

// Cross-database transactions
await service.withDatabaseTransaction(databaseNames, callback);
```

### **Enhanced Service Configuration**
```javascript
const service = CreateService({
  port: 3000,
  // NEW: Multi-database support
  databases: {
    primary: 'mongodb://localhost:27017/app',
    analytics: {
      url: 'mongodb://localhost:27017/analytics',
      config: { description: 'Analytics database' }
    }
  },
  // Enhanced existing features
  enableSecurity: true,
  enableRateLimit: true,
  enablePerformanceMonitoring: true
});
```

---

## 📦 **Dependencies & Infrastructure**

### **Updated Dependencies**
- **inquirer**: `^9.3.7` - Enhanced interactive CLI experience
- **axios**: `^1.7.9` - Reliable HTTP client (replaced deprecated got)
- **commander**: `^9.5.0` - Advanced CLI argument parsing
- **chokidar**: `^3.5.0` - File watching for development server

### **New Components**
- `src/multi_database_manager.js` - Complete multi-database management
- `test/multi-database-manager.test.js` - Comprehensive database tests
- `test/rate-limiter.test.js` - Rate limiting functionality tests
- `test/security-validator.test.js` - Security validation tests
- `test/performance-monitor.test.js` - Performance monitoring tests
- Enhanced CLI with 1000+ lines of new functionality

---

## 🔄 **Migration Guide**

### **From v2.0.0-beta.3 to v2.0.0-beta.4**

**✅ Zero Breaking Changes** - All existing code continues to work

**🔧 To Use Multi-Database Features:**
```javascript
// Before (still works)
const service = CreateService({ port: 3000 });

// After (new capability)
const service = CreateService({
  port: 3000,
  databases: {
    primary: 'mongodb://localhost:27017/app',
    analytics: 'mongodb://localhost:27017/analytics'
  }
});
```

**🚀 Enhanced CLI Usage:**
```bash
# Interactive project creation (new default)
cube-ms create my-app

# Non-interactive with all options
cube-ms create my-app --language typescript --template api --port 8080 --no-interactive
```

---

## 📊 **Performance & Quality**

### **Test Coverage**
- **14 Test Files**: Comprehensive coverage of all components
- **Multi-Database**: Transaction safety and health monitoring
- **Security**: XSS, SQL injection, rate limiting protection
- **Performance**: Memory, CPU, and response time monitoring
- **Integration**: End-to-end workflow validation

### **Quality Assurance**
- **Zero Breaking Changes**: Full backward compatibility maintained
- **Professional Code Quality**: Proper error handling, logging, cleanup
- **Security Focus**: Input validation, credential masking, secure defaults
- **Production Ready**: Comprehensive monitoring and health checks

---

## 🐳 **Docker & Production**

### **Environment Validation**
```bash
# Validate Docker Compose consistency
npm run validate-docker-env

# Auto-fix environment issues
npm run fix:docker-env

# Pre-deployment checks
npm run pre-deploy:prod
```

### **Enhanced Health Checks**
- Individual database health monitoring
- Cross-database transaction health
- Performance metrics aggregation
- Comprehensive service status reporting

---

## 🔗 **Compatibility**

- **✅ Node.js**: >=16.14.0
- **✅ MongoDB**: ^6.10.0
- **✅ TypeScript**: ^5.3.3 (optional)
- **✅ Docker**: Full container support
- **✅ Kubernetes**: Health check endpoints

---

## 🤝 **Contributing & Feedback**

This is a **beta release** with active development. Please report any issues or feedback to help us improve the framework before the stable v2.0.0 release.

### **What's Next**
- **v2.0.0-stable**: Final release with performance optimizations
- **GraphQL Integration**: Enhanced GraphQL server implementation  
- **Advanced Caching**: Redis integration and multi-tier caching
- **Deployment Automation**: Enhanced Docker and Kubernetes support

---

## 📚 **Documentation Updates**

- **[README.md](./README.md)**: Complete feature documentation
- **[CLI.md](./CLI.md)**: Interactive CLI guide
- **[Multi-Database Guide](./README.md#multi-database-support)**: Database management
- **[TypeScript Guide](./README.md#typescript-support)**: TypeScript integration

---

**Version**: 2.0.0-beta.4  
**Release Date**: 2025-01-19  
**Node.js**: >=16.14.0  
**License**: MIT

**🎉 This release represents a major milestone in the Cube Microservice framework evolution, providing enterprise-grade multi-database capabilities with an exceptional developer experience.**