ict-architecture

Labo 08: Microservices Patronen

Voorbeelden van API Gateway en API Composition in een Node.js/Python ecosysteem.

Omgeving

docker compose up -d

Start de basis services (Customers, Orders, Products).

Bestanden & Configuraties

gateway.py

python

from flask import Flask, request, jsonify
import requests
app = Flask(__name__)
@app.route('/order-summary', methods=['GET'])
def get_order_summary():
    email = request.args.get('email')
    customer = requests.get(f"http://customers:3000/customers?email={email}").json()[0]
    orders = requests.get(f"http://orders:3000/orders?customerId={customer['id']}").json()
    full_orders = []
    for order in orders:
        product = requests.get(f"http://products:3000/products/{order['productId']}").json()
        full_orders.append({
            "productName": product['name'],
            "priceAtPurchase": product['price']
        })
    return jsonify({
        "customerName": customer['name'],
        "orderHistory": full_orders
    })
if __name__ == '__main__':
    app.run(host='0.0.0.0', port=5000)

Een Python API Gateway die data uit meerdere services combineert.