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Replace deprecated @app.on_event with lifespan context manager #389

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Qiaochu Hu (hobostay) wants to merge 1 commit into
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Replace deprecated @app.on_event with lifespan context manager #389

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13 changes: 8 additions & 5 deletions demo/web/app.py
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Original file line number Diff line number Diff line change
Expand Up @@ -332,17 +332,16 @@ def chunk_to_pcm16(self, chunk: np.ndarray) -> bytes:
return pcm.tobytes()


app = FastAPI()
from contextlib import asynccontextmanager


@app.on_event("startup")
async def _startup() -> None:
@asynccontextmanager
async def lifespan(app: FastAPI):
model_path = os.environ.get("MODEL_PATH")
if not model_path:
raise RuntimeError("MODEL_PATH not set in environment")

device = os.environ.get("MODEL_DEVICE", "cuda")

service = StreamingTTSService(
model_path=model_path,
device=device
Expand All @@ -354,6 +353,10 @@ async def _startup() -> None:
app.state.device = device
app.state.websocket_lock = asyncio.Lock()
print("[startup] Model ready.")
yield


app = FastAPI(lifespan=lifespan)


def streaming_tts(text: str, **kwargs) -> Iterator[np.ndarray]:
Expand Down