mirror of
https://github.com/nonebot/nonebot2.git
synced 2024-11-24 00:55:07 +08:00
311 lines
9.6 KiB
Python
311 lines
9.6 KiB
Python
"""[FastAPI](https://fastapi.tiangolo.com/) 驱动适配
|
||
|
||
```bash
|
||
nb driver install fastapi
|
||
# 或者
|
||
pip install nonebot2[fastapi]
|
||
```
|
||
|
||
:::tip 提示
|
||
本驱动仅支持服务端连接
|
||
:::
|
||
|
||
FrontMatter:
|
||
mdx:
|
||
format: md
|
||
sidebar_position: 1
|
||
description: nonebot.drivers.fastapi 模块
|
||
"""
|
||
|
||
import logging
|
||
import contextlib
|
||
from functools import wraps
|
||
from typing_extensions import override
|
||
from typing import Any, Union, Optional
|
||
|
||
from pydantic import BaseModel
|
||
|
||
from nonebot.config import Env
|
||
from nonebot.drivers import ASGIMixin
|
||
from nonebot.exception import WebSocketClosed
|
||
from nonebot.internal.driver import FileTypes
|
||
from nonebot.drivers import Driver as BaseDriver
|
||
from nonebot.config import Config as NoneBotConfig
|
||
from nonebot.drivers import Request as BaseRequest
|
||
from nonebot.drivers import WebSocket as BaseWebSocket
|
||
from nonebot.compat import model_dump, type_validate_python
|
||
from nonebot.drivers import HTTPServerSetup, WebSocketServerSetup
|
||
|
||
try:
|
||
import uvicorn
|
||
from fastapi.responses import Response
|
||
from fastapi import FastAPI, Request, UploadFile, status
|
||
from starlette.websockets import WebSocket, WebSocketState, WebSocketDisconnect
|
||
except ModuleNotFoundError as e: # pragma: no cover
|
||
raise ImportError(
|
||
"Please install FastAPI first to use this driver. "
|
||
"Install with pip: `pip install nonebot2[fastapi]`"
|
||
) from e
|
||
|
||
|
||
def catch_closed(func):
|
||
@wraps(func)
|
||
async def decorator(*args, **kwargs):
|
||
try:
|
||
return await func(*args, **kwargs)
|
||
except WebSocketDisconnect as e:
|
||
raise WebSocketClosed(e.code)
|
||
except KeyError:
|
||
raise TypeError("WebSocket received unexpected frame type")
|
||
|
||
return decorator
|
||
|
||
|
||
class Config(BaseModel):
|
||
"""FastAPI 驱动框架设置，详情参考 FastAPI 文档"""
|
||
|
||
fastapi_openapi_url: Optional[str] = None
|
||
"""`openapi.json` 地址，默认为 `None` 即关闭"""
|
||
fastapi_docs_url: Optional[str] = None
|
||
"""`swagger` 地址，默认为 `None` 即关闭"""
|
||
fastapi_redoc_url: Optional[str] = None
|
||
"""`redoc` 地址，默认为 `None` 即关闭"""
|
||
fastapi_include_adapter_schema: bool = True
|
||
"""是否包含适配器路由的 schema，默认为 `True`"""
|
||
fastapi_reload: bool = False
|
||
"""开启/关闭冷重载"""
|
||
fastapi_reload_dirs: Optional[list[str]] = None
|
||
"""重载监控文件夹列表，默认为 uvicorn 默认值"""
|
||
fastapi_reload_delay: float = 0.25
|
||
"""重载延迟，默认为 uvicorn 默认值"""
|
||
fastapi_reload_includes: Optional[list[str]] = None
|
||
"""要监听的文件列表，支持 glob pattern，默认为 uvicorn 默认值"""
|
||
fastapi_reload_excludes: Optional[list[str]] = None
|
||
"""不要监听的文件列表，支持 glob pattern，默认为 uvicorn 默认值"""
|
||
fastapi_extra: dict[str, Any] = {}
|
||
"""传递给 `FastAPI` 的其他参数。"""
|
||
|
||
|
||
class Driver(BaseDriver, ASGIMixin):
|
||
"""FastAPI 驱动框架。"""
|
||
|
||
def __init__(self, env: Env, config: NoneBotConfig):
|
||
super().__init__(env, config)
|
||
|
||
self.fastapi_config: Config = type_validate_python(Config, model_dump(config))
|
||
|
||
self._server_app = FastAPI(
|
||
lifespan=self._lifespan_manager,
|
||
openapi_url=self.fastapi_config.fastapi_openapi_url,
|
||
docs_url=self.fastapi_config.fastapi_docs_url,
|
||
redoc_url=self.fastapi_config.fastapi_redoc_url,
|
||
**self.fastapi_config.fastapi_extra,
|
||
)
|
||
|
||
@property
|
||
@override
|
||
def type(self) -> str:
|
||
"""驱动名称: `fastapi`"""
|
||
return "fastapi"
|
||
|
||
@property
|
||
@override
|
||
def server_app(self) -> FastAPI:
|
||
"""`FastAPI APP` 对象"""
|
||
return self._server_app
|
||
|
||
@property
|
||
@override
|
||
def asgi(self) -> FastAPI:
|
||
"""`FastAPI APP` 对象"""
|
||
return self._server_app
|
||
|
||
@property
|
||
@override
|
||
def logger(self) -> logging.Logger:
|
||
"""fastapi 使用的 logger"""
|
||
return logging.getLogger("fastapi")
|
||
|
||
@override
|
||
def setup_http_server(self, setup: HTTPServerSetup):
|
||
async def _handle(request: Request) -> Response:
|
||
return await self._handle_http(request, setup)
|
||
|
||
self._server_app.add_api_route(
|
||
setup.path.path,
|
||
_handle,
|
||
name=setup.name,
|
||
methods=[setup.method],
|
||
include_in_schema=self.fastapi_config.fastapi_include_adapter_schema,
|
||
)
|
||
|
||
@override
|
||
def setup_websocket_server(self, setup: WebSocketServerSetup) -> None:
|
||
async def _handle(websocket: WebSocket) -> None:
|
||
await self._handle_ws(websocket, setup)
|
||
|
||
self._server_app.add_api_websocket_route(
|
||
setup.path.path,
|
||
_handle,
|
||
name=setup.name,
|
||
)
|
||
|
||
@contextlib.asynccontextmanager
|
||
async def _lifespan_manager(self, app: FastAPI):
|
||
await self._lifespan.startup()
|
||
try:
|
||
yield
|
||
finally:
|
||
await self._lifespan.shutdown()
|
||
|
||
@override
|
||
def run(
|
||
self,
|
||
host: Optional[str] = None,
|
||
port: Optional[int] = None,
|
||
*args,
|
||
app: Optional[str] = None,
|
||
**kwargs,
|
||
):
|
||
"""使用 `uvicorn` 启动 FastAPI"""
|
||
super().run(host, port, app=app, **kwargs)
|
||
LOGGING_CONFIG = {
|
||
"version": 1,
|
||
"disable_existing_loggers": False,
|
||
"handlers": {
|
||
"default": {
|
||
"class": "nonebot.log.LoguruHandler",
|
||
},
|
||
},
|
||
"loggers": {
|
||
"uvicorn.error": {"handlers": ["default"], "level": "INFO"},
|
||
"uvicorn.access": {
|
||
"handlers": ["default"],
|
||
"level": "INFO",
|
||
},
|
||
},
|
||
}
|
||
uvicorn.run(
|
||
app or self.server_app, # type: ignore
|
||
host=host or str(self.config.host),
|
||
port=port or self.config.port,
|
||
reload=self.fastapi_config.fastapi_reload,
|
||
reload_dirs=self.fastapi_config.fastapi_reload_dirs,
|
||
reload_delay=self.fastapi_config.fastapi_reload_delay,
|
||
reload_includes=self.fastapi_config.fastapi_reload_includes,
|
||
reload_excludes=self.fastapi_config.fastapi_reload_excludes,
|
||
log_config=LOGGING_CONFIG,
|
||
**kwargs,
|
||
)
|
||
|
||
async def _handle_http(
|
||
self,
|
||
request: Request,
|
||
setup: HTTPServerSetup,
|
||
) -> Response:
|
||
json: Any = None
|
||
with contextlib.suppress(Exception):
|
||
json = await request.json()
|
||
|
||
data: Optional[dict] = None
|
||
files: Optional[list[tuple[str, FileTypes]]] = None
|
||
with contextlib.suppress(Exception):
|
||
form = await request.form()
|
||
data = {}
|
||
files = []
|
||
for key, value in form.multi_items():
|
||
if isinstance(value, UploadFile):
|
||
files.append(
|
||
(key, (value.filename, value.file, value.content_type))
|
||
)
|
||
else:
|
||
data[key] = value
|
||
|
||
http_request = BaseRequest(
|
||
request.method,
|
||
str(request.url),
|
||
headers=request.headers.items(),
|
||
cookies=request.cookies,
|
||
content=await request.body(),
|
||
data=data,
|
||
json=json,
|
||
files=files,
|
||
version=request.scope["http_version"],
|
||
)
|
||
|
||
response = await setup.handle_func(http_request)
|
||
return Response(
|
||
response.content, response.status_code, dict(response.headers.items())
|
||
)
|
||
|
||
async def _handle_ws(self, websocket: WebSocket, setup: WebSocketServerSetup):
|
||
request = BaseRequest(
|
||
"GET",
|
||
str(websocket.url),
|
||
headers=websocket.headers.items(),
|
||
cookies=websocket.cookies,
|
||
version=websocket.scope.get("http_version", "1.1"),
|
||
)
|
||
ws = FastAPIWebSocket(
|
||
request=request,
|
||
websocket=websocket,
|
||
)
|
||
|
||
await setup.handle_func(ws)
|
||
|
||
|
||
class FastAPIWebSocket(BaseWebSocket):
|
||
"""FastAPI WebSocket Wrapper"""
|
||
|
||
@override
|
||
def __init__(self, *, request: BaseRequest, websocket: WebSocket):
|
||
super().__init__(request=request)
|
||
self.websocket = websocket
|
||
|
||
@property
|
||
@override
|
||
def closed(self) -> bool:
|
||
return (
|
||
self.websocket.client_state == WebSocketState.DISCONNECTED
|
||
or self.websocket.application_state == WebSocketState.DISCONNECTED
|
||
)
|
||
|
||
@override
|
||
async def accept(self) -> None:
|
||
await self.websocket.accept()
|
||
|
||
@override
|
||
async def close(
|
||
self, code: int = status.WS_1000_NORMAL_CLOSURE, reason: str = ""
|
||
) -> None:
|
||
await self.websocket.close(code, reason)
|
||
|
||
@override
|
||
async def receive(self) -> Union[str, bytes]:
|
||
# assert self.websocket.application_state == WebSocketState.CONNECTED
|
||
msg = await self.websocket.receive()
|
||
if msg["type"] == "websocket.disconnect":
|
||
raise WebSocketClosed(msg["code"])
|
||
return msg["text"] if "text" in msg else msg["bytes"]
|
||
|
||
@override
|
||
@catch_closed
|
||
async def receive_text(self) -> str:
|
||
return await self.websocket.receive_text()
|
||
|
||
@override
|
||
@catch_closed
|
||
async def receive_bytes(self) -> bytes:
|
||
return await self.websocket.receive_bytes()
|
||
|
||
@override
|
||
async def send_text(self, data: str) -> None:
|
||
await self.websocket.send({"type": "websocket.send", "text": data})
|
||
|
||
@override
|
||
async def send_bytes(self, data: bytes) -> None:
|
||
await self.websocket.send({"type": "websocket.send", "bytes": data})
|
||
|
||
|
||
__autodoc__ = {"catch_closed": False}
|