ecommerce-asyncapi-channels

E-commerce Order Lifecycle Events

A focused example showing how to generate protocol-specific messaging functions from AsyncAPI specifications for order lifecycle management in an e-commerce system.

Files:

• ecommerce-event-channels.yaml - AsyncAPI specification with order lifecycle channel definitions, operations, and parameterized routing
• codegen.config.js - Configuration for generating protocol-specific messaging functions
• src/index.ts - Demo script showing order lifecycle event patterns
• src/generated - All the generated files

Features demonstrated:

• Protocol-specific functions for NATS and Kafka
• Order lifecycle events (created, updated, cancelled, shipped, delivered)
• Parameterized channel addresses (orders.{action})
• Operation-based function generation
• Type-safe order event publishing and subscription
• Comprehensive order data modeling (items, addresses, money)
• Multi-protocol support (NATS for real-time, Kafka for analytics)
• Automatic parameter handling and message validation
• Order workflow orchestration patterns

Order Lifecycle Flow:

• OrderCreated - New order placed by customer
• OrderUpdated - Order status changes (pending → processing → shipped → delivered)
• OrderCancelled - Order cancelled with refund processing

Usage:

# Install dependencies
npm install

# Generate protocol-specific functions
npm run generate

# Run the order lifecycle demo
npm run demo

The generated protocol functions provide type-safe order event handling with automatic parameter substitution for channel addressing and comprehensive order data validation.