🐛 Fix: 修复 bot hook 缺少依赖缓存和上下文管理 (#1826)

nonebot/internal/driver/driver.py

@@ -1,6 +1,6 @@
 import abc
 import asyncio
-from contextlib import asynccontextmanager
+from contextlib import AsyncExitStack, asynccontextmanager
 from typing import TYPE_CHECKING, Any, Set, Dict, Type, Callable, AsyncGenerator
 
 from nonebot.log import logger
@@ -8,8 +8,12 @@ from nonebot.config import Env, Config
 from nonebot.dependencies import Dependent
 from nonebot.exception import SkippedException
 from nonebot.utils import escape_tag, run_coro_with_catch
-from nonebot.typing import T_BotConnectionHook, T_BotDisconnectionHook
 from nonebot.internal.params import BotParam, DependParam, DefaultParam
+from nonebot.typing import (
+    T_DependencyCache,
+    T_BotConnectionHook,
+    T_BotDisconnectionHook,
+)
 
 from .model import Request, Response, WebSocket, HTTPServerSetup, WebSocketServerSetup
 
@@ -135,13 +139,15 @@ class Driver(abc.ABC):
         self._bots[bot.self_id] = bot
 
         async def _run_hook(bot: "Bot") -> None:
-            coros = list(
-                map(
-                    lambda x: run_coro_with_catch(x(bot=bot), (SkippedException,)),
-                    self._bot_connection_hook,
+            dependency_cache: T_DependencyCache = {}
+            async with AsyncExitStack() as stack:
+                if coros := [
+                    run_coro_with_catch(
+                        hook(bot=bot, stack=stack, dependency_cache=dependency_cache),
+                        (SkippedException,),
                     )
-            )
-            if coros:
+                    for hook in self._bot_connection_hook
+                ]:
                     try:
                         await asyncio.gather(*coros)
                     except Exception as e:
@@ -158,13 +164,15 @@ class Driver(abc.ABC):
             del self._bots[bot.self_id]
 
         async def _run_hook(bot: "Bot") -> None:
-            coros = list(
-                map(
-                    lambda x: run_coro_with_catch(x(bot=bot), (SkippedException,)),
-                    self._bot_disconnection_hook,
+            dependency_cache: T_DependencyCache = {}
+            async with AsyncExitStack() as stack:
+                if coros := [
+                    run_coro_with_catch(
+                        hook(bot=bot, stack=stack, dependency_cache=dependency_cache),
+                        (SkippedException,),
                     )
-            )
-            if coros:
+                    for hook in self._bot_disconnection_hook
+                ]:
                     try:
                         await asyncio.gather(*coros)
                     except Exception as e:

tests/test_driver.py

@@ -1,13 +1,16 @@
 import json
 import asyncio
-from typing import cast
+from typing import Any, Set, cast
 
 import pytest
 from nonebug import App
 
 import nonebot
 from nonebot.config import Env
+from nonebot.adapters import Bot
+from nonebot.params import Depends
 from nonebot import _resolve_combine_expr
+from nonebot.dependencies import Dependent
 from nonebot.exception import WebSocketClosed
 from nonebot.drivers import (
     URL,
@@ -169,3 +172,69 @@ async def test_http_driver(driver: Driver):
 )
 async def test_combine_driver(driver: Driver, driver_type: str):
     assert driver.type == driver_type
+
+
+@pytest.mark.asyncio
+async def test_bot_connect_hook(app: App, driver: Driver):
+    with pytest.MonkeyPatch.context() as m:
+        conn_hooks: Set[Dependent[Any]] = set()
+        disconn_hooks: Set[Dependent[Any]] = set()
+        m.setattr(Driver, "_bot_connection_hook", conn_hooks)
+        m.setattr(Driver, "_bot_disconnection_hook", disconn_hooks)
+
+        conn_should_be_called = False
+        disconn_should_be_called = False
+        dependency_should_be_run = False
+        dependency_should_be_cleaned = False
+
+        async def dependency():
+            nonlocal dependency_should_be_run, dependency_should_be_cleaned
+            dependency_should_be_run = True
+            try:
+                yield 1
+            finally:
+                dependency_should_be_cleaned = True
+
+        @driver.on_bot_connect
+        async def conn_hook(foo: Bot, dep: int = Depends(dependency), default: int = 1):
+            nonlocal conn_should_be_called
+            conn_should_be_called = True
+
+            if foo is not bot:
+                pytest.fail("on_bot_connect hook called with wrong bot")
+            if dep != 1:
+                pytest.fail("on_bot_connect hook called with wrong dependency")
+            if default != 1:
+                pytest.fail("on_bot_connect hook called with wrong default value")
+
+        @driver.on_bot_disconnect
+        async def disconn_hook(
+            foo: Bot, dep: int = Depends(dependency), default: int = 1
+        ):
+            nonlocal disconn_should_be_called
+            disconn_should_be_called = True
+
+            if foo is not bot:
+                pytest.fail("on_bot_disconnect hook called with wrong bot")
+            if dep != 1:
+                pytest.fail("on_bot_connect hook called with wrong dependency")
+            if default != 1:
+                pytest.fail("on_bot_connect hook called with wrong default value")
+
+        if conn_hook not in {hook.call for hook in conn_hooks}:
+            pytest.fail("on_bot_connect hook not registered")
+        if disconn_hook not in {hook.call for hook in disconn_hooks}:
+            pytest.fail("on_bot_disconnect hook not registered")
+
+        async with app.test_api() as ctx:
+            bot = ctx.create_bot()
+
+        await asyncio.sleep(1)
+        if not conn_should_be_called:
+            pytest.fail("on_bot_connect hook not called")
+        if not disconn_should_be_called:
+            pytest.fail("on_bot_disconnect hook not called")
+        if not dependency_should_be_run:
+            pytest.fail("dependency not run")
+        if not dependency_should_be_cleaned:
+            pytest.fail("dependency not cleaned")