feat: Semaine 8

Semaine_08/orderflow/order_service/main.py

@@ -0,0 +1,40 @@
+import sys, os
+sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from uuid import uuid4
+from fastapi import FastAPI
+
+from fastapi.responses import JSONResponse
+from pydantic import BaseModel
+from producer import OrderProducer
+
+app = FastAPI()
+producer = OrderProducer()
+orders_db: list[dict] = []
+
+class OrderItem(BaseModel):
+    dish_id: int
+    name: str
+    price: float
+
+class CreateOrderDto(BaseModel):
+    customer_id: int
+    restaurant_id: int
+    items: list[OrderItem]
+
+@app.post("/orders")
+async def place_order(payload: CreateOrderDto):
+    order = {
+        "order_id": uuid4().hex,
+        "customer_id": payload.customer_id,
+        "restaurant_id": payload.restaurant_id,
+        "items": [ item.model_dump() for item in payload.items ],
+        "total_amount": sum([ item.price for item in payload.items ])
+    }
+
+    producer.publish_order_created(order)
+
+    return JSONResponse(
+        status_code= 202,
+        content= {"message": "Commande acceptee", "order_id": order["order_id"]}
+    )

Semaine_08/orderflow/order_service/producer.py

@@ -0,0 +1,26 @@
+import json
+
+from kafka import KafkaProducer
+from shared.events import BOOTSTRAP_SERVERS, make_event, TOPIC_ORDERS
+
+class OrderProducer:
+    def __init__(self):
+        self.producer = KafkaProducer(
+            bootstrap_servers=BOOTSTRAP_SERVERS,
+            key_serializer= str.encode, # convertir en bytes "3" -> b"3"
+            value_serializer=lambda v: json.dumps(v).encode(),
+            acks= "all"
+        )
+
+    def publish_order_created(self, order: dict):
+        event = make_event(
+            "order_created",
+            order
+        )
+
+        self.producer.send(
+            TOPIC_ORDERS,
+            value=event
+        )
+
+        self.producer.flush()