Add Tutorial for Dapr + Drasi E-Commerce Scenario

[amansinghoriginal]

Add tutorial for Dapr + Drasi E-Commerce Scenario

Summary

Adds a complete e-commerce sample demonstrating how Drasi enhances Dapr microservices with real-time, cross-service data change processing. Originally presented at Dapr Community Call #123. This also has devcontainer and scripts, which allows it to be run in 4 environments:

• GitHub Codespaces
• VSCode DevContainers
• Local Setup on Mac/Linux
• Local Setup on Windows

What's New

• 4 Dapr Microservices: Products, Customers, Orders, Reviews (each with PostgreSQL state store)
• 3 Drasi-Powered Services: Catalog (materialized view), Dashboard (real-time monitoring), Notifications (intelligent events)
• Drasi Components: 4 sources, 5 continuous queries, 3 reactions
• Interactive Demos: 3 shell scripts demonstrating each Drasi reaction

File Structure

tutorial/dapr/
├── README.md               # Documentation
├── Makefile                       
├── demo/                          # Interactive demonstration scripts
│   ├── demo-catalogue-service.sh
│   ├── demo-dashboard-service.sh
│   └── demo-notifications-service.sh
├── drasi/                         # Drasi configuration
│   ├── sources/                   # 4 PostgreSQL sources
│   │   ├── products.yaml
│   │   ├── customers.yaml
│   │   ├── orders.yaml
│   │   └── reviews.yaml
│   ├── queries/                   # 5 continuous queries
│   │   ├── product-catalogue.yaml
│   │   ├── delayed-gold-orders.yaml
│   │   ├── at-risk-orders.yaml
│   │   ├── low-stock-event.yaml
│   │   └── critical-stock-event.yaml
│   └── reactions/                 # 3 reaction types
│       ├── sync-dapr-statestore.yaml
│       ├── signalr-reaction.yaml
│       └── post-dapr-pubsub.yaml
└── services/                      # 7 microservices
    ├── products/                  # Core Dapr service
    ├── customers/                 # Core Dapr service
    ├── orders/                    # Core Dapr service
    ├── reviews/                   # Core Dapr service
    ├── catalogue/                 # Drasi-powered (React + Python)
    ├── dashboard/                 # Drasi-powered (React)
    └── notifications/             # Drasi-powered (Python + React UI)

[ruokun-niu]

Are we planning to add a dev container option for this sample app

[Copilot]

Pull Request Overview

This PR adds a comprehensive e-commerce sample application demonstrating how Drasi enhances Dapr microservices with real-time, cross-service data change processing. It includes 4 core Dapr microservices (Products, Customers, Orders, Reviews) with PostgreSQL state stores, and 3 Drasi-powered services (Catalog, Dashboard, Notifications) featuring 4 sources, 5 continuous queries, and 3 reaction types.

Key Changes

• Complete microservice architecture: 7 services with their own APIs, database configuration, and setup scripts
• Drasi integration: Comprehensive configuration for real-time data change detection and processing
• Rich notification system: WebSocket-enabled dashboard with React UI and animated email notifications

Reviewed Changes

Copilot reviewed 138 out of 142 changed files in this pull request and generated 1 comment.

File	Description
Reviews Service	RESTful API for managing customer reviews with CRUD operations, test scripts, and PostgreSQL integration
Products Service	Product catalog management with stock operations, threshold monitoring, and comprehensive API testing
Orders Service	Order lifecycle management with status transitions, validation rules, and multi-item support
Notifications Service	Real-time notification system with WebSocket UI, Redis pub/sub, and animated dashboard components

Comments suppressed due to low confidence (2)

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[amansinghoriginal]

Are we planning to add a dev container option for this sample app

Yes, will add that as a separate PR.