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()

faststream_publisher_jetstream.py

@@ -0,0 +1,42 @@
+# faststream run faststream_app:app
+
+import asyncio
+import os
+
+from faststream.specification.asyncapi.v3_0_0.schema import servers
+from pydantic import BaseModel, Field
+from faststream.nats import NatsBroker, NatsMessage
+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)
+
+class JobCreated(BaseModel):
+    job_id: str
+    name: str
+    subject: str = "jobs.created"
+
+class JobResponse(BaseModel):
+    job_id: str = Field(..., description="Job identifier")
+    status: str = Field(..., description="Job status")
+
+async def main():
+    await broker.connect()
+    # await broker.publish(
+    #     JobCreated(job_id="123", name="build-image").model_dump(),
+    #     subject="orders.created",
+    # )
+
+    async with broker:
+        response: NatsMessage = await broker.request(
+            JobCreated(job_id="128", name="build-image").model_dump(),
+            subject="orders.created",
+            timeout=3,
+        )
+        print(f"{await response.decode()=}")
+    await broker.stop()
+
+asyncio.run(main())
+