add example of jetstream

faststream_app_jetstream.py

@@ -0,0 +1,37 @@
+# faststream run faststream_app:app
+
+import asyncio
+import os
+import time
+from cProfile import run
+
+from faststream import FastStream
+from faststream.specification.asyncapi.v3_0_0.schema import servers
+from pydantic import BaseModel, Field
+from faststream.nats import NatsBroker, JStream
+from urllib3.util import url
+
+NATS_SERVERS = os.getenv('NATS_URL', 'nats://localhost:4222').split(',')
+NATS_TOKEN = os.getenv('NATS_TOKEN', '')
+
+broker = NatsBroker(servers=NATS_SERVERS, token=NATS_TOKEN)
+app = FastStream(broker)
+
+stream = JStream(name="orders", subjects=["orders.*"])
+
+@broker.subscriber("orders.created", stream=stream, durable="orders-worker")
+async def handle_order(message: dict):
+    print("received:", message)
+    return {"status": "ok"}
+
+@broker.publisher("orders.created", stream="orders")
+async def publish_order():
+    return {"order_id": 123, "item": "book"}
+
+
+async def main():
+    await app.run()
+
+if __name__ == "__main__":
+    asyncio.run(main())
+    broker.stop()