fix(runtime): enforce main event loop ownership (#6424)

app/db/session.py

@@ -143,8 +143,8 @@ def _pooled_loop() -> Optional[Any]:
 
     只认常驻主循环：它承载了绝大多数异步 DB 流量，且生命周期与进程一致，
     池中连接不会因循环销毁而失效。
-    直接读 CURRENT_EVENT_LOOP 而不用 global_vars.loop——后者在未设置时会
+    直接读 CURRENT_EVENT_LOOP 而不用 global_vars.loop，避免主循环尚未就绪时
-    新建一个事件循环，仅为判断就产生副作用是不可接受的。
+    把正常的回退引擎选择转换成生命周期异常。
     """
     if not _async_pool_enabled():
         return None

app/runtime/config.py

@@ -1,4 +1,3 @@
-import asyncio
 import copy
 import json
 import os
@@ -1359,18 +1358,8 @@ class GlobalVar(object):
     EMERGENCY_STOP_WORKFLOWS: List[int] = []
     # 需应急停止文件整理
     EMERGENCY_STOP_TRANSFER: List[str] = []
-    # 当前事件循环
+    # 生命周期登记的主事件循环
-    CURRENT_EVENT_LOOP: AbstractEventLoop = None
+    CURRENT_EVENT_LOOP: Optional[AbstractEventLoop] = None
-
-    @classmethod
-    def _get_event_loop(cls) -> AbstractEventLoop:
-        """返回当前线程事件循环，缺失时创建并绑定新循环。"""
-        try:
-            return asyncio.get_event_loop()
-        except RuntimeError:
-            loop = asyncio.new_event_loop()
-            asyncio.set_event_loop(loop)
-            return loop
 
     def stop_system(self):
         """
@@ -1461,19 +1450,21 @@ class GlobalVar(object):
 
     @property
     def loop(self) -> AbstractEventLoop:
-        """
+        """返回由应用生命周期登记的主事件循环。"""
-        当前循环
+        loop = self.CURRENT_EVENT_LOOP
-        """
+        if loop is None or not loop.is_running() or loop.is_closed():
-        if self.CURRENT_EVENT_LOOP is None:
+            raise RuntimeError("主事件循环尚未启动或已经停止")
-            self.CURRENT_EVENT_LOOP = self._get_event_loop()
+        return loop
-        return self.CURRENT_EVENT_LOOP
 
-    def set_loop(self, loop: AbstractEventLoop):
+    def set_loop(self, loop: AbstractEventLoop) -> None:
-        """
+        """登记承载主程序异步任务的事件循环。"""
-        设置循环
-        """
         self.CURRENT_EVENT_LOOP = loop
 
+    def clear_loop(self, loop: AbstractEventLoop) -> None:
+        """仅在登记值仍为目标循环时清除主事件循环。"""
+        if self.CURRENT_EVENT_LOOP is loop:
+            self.CURRENT_EVENT_LOOP = None
+
 
 # 全局标识
 global_vars = GlobalVar()

app/startup/lifecycle/__init__.py

@@ -368,14 +368,14 @@ async def lifespan(app: FastAPI):
     """
     health = get_application_health(app)
     health.begin_startup()
+    main_loop = asyncio.get_running_loop()
     try:
         validate_process_topology(
             workers=settings.API_WORKERS,
             safe_mode=settings.MOVIEPILOT_SAFE_MODE,
         )
         print("Starting up...")
-        # 存储当前循环
+        global_vars.set_loop(main_loop)
-        global_vars.set_loop(asyncio.get_event_loop())
         components = build_lifecycle_components(app)
         enabled_components = tuple(
             component
@@ -411,6 +411,8 @@ async def lifespan(app: FastAPI):
             await stop_task_registry(app)
         except Exception as cleanup_error:
             logger.error(f"启动失败后的后台任务清理失败：{cleanup_error}")
+        finally:
+            global_vars.clear_loop(main_loop)
         raise
     try:
         # 在此处 yield，表示应用已经启动，控制权交回 FastAPI 主事件循环
@@ -435,5 +437,8 @@ async def lifespan(app: FastAPI):
                     component.stop_timeout_seconds,
                 )
         finally:
+            try:
                 # 日志最后关闭，确保其他组件的收尾信息已写入文件
                 LoggerManager.shutdown()
+            finally:
+                global_vars.clear_loop(main_loop)

tests/test_agent_image_capability.py

@@ -1,5 +1,5 @@
 from dataclasses import replace
-from unittest.mock import AsyncMock, patch
+from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
 
@@ -7,7 +7,7 @@ from app.agent import MoviePilotAgent
 from app.agent.llm import AgentCapabilityManager, LLMHelper
 from app.agent.llm.provider import LLMProviderManager
 from app.chain.message import MessageChain
-from app.runtime.config import settings
+from app.runtime.config import global_vars, settings
 from app.schemas.types import NotificationChannel
 
 
@@ -89,6 +89,8 @@ def test_handle_ai_message_routes_text_only_model_images_to_files(
     monkeypatch.setattr(settings, "LLM_SUPPORT_IMAGE_INPUT", True)
     monkeypatch.setattr(settings, "LLM_PROVIDER", "minimax")
     monkeypatch.setattr(settings, "LLM_MODEL", "MiniMax-M2.7")
+    loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+    monkeypatch.setattr(global_vars, "CURRENT_EVENT_LOOP", loop)
     # 测试绕过完整启动组合根，按需装配 llm_helper provider 以走真实能力判断
     import app.application.agent as agent_facade
 

tests/test_agent_image_support.py

@@ -16,7 +16,7 @@ from app.agent.tools.impl.send_local_file import SendLocalFileInput
 from app.agent import MoviePilotAgent, AgentChain
 from app.agent.llm import AgentCapabilityManager
 from app.chain.message import MessageChain
-from app.runtime.config import settings
+from app.runtime.config import global_vars, settings
 from app.agent.llm import LLMHelper
 from app.modules.discord import DiscordModule
 from app.modules.qqbot import QQBotModule
@@ -454,7 +454,10 @@ class AgentImageSupportTest(unittest.TestCase):
             ai_agent_enable=True,
         )
 
-        with patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+            settings, "AI_AGENT_ENABLE", True
+        ), patch.object(
             settings, "LLM_SUPPORT_IMAGE_INPUT", False
         ), patch(
             "app.chain.message.supports_image_input", return_value=False
@@ -508,7 +511,10 @@ class AgentImageSupportTest(unittest.TestCase):
             ai_agent_enable=True,
         )
 
-        with patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+            settings, "AI_AGENT_ENABLE", True
+        ), patch.object(
             chain, "_get_or_create_session_id", return_value="session-1"
         ), patch(
             "app.chain.message.get_running_agent_manager"

tests/test_agent_interaction.py

@@ -17,7 +17,7 @@ from app.application.messaging.agent import (
 )
 from app.application.messaging.interaction import InteractionContext
 from app.chain.message import MessageChain
-from app.runtime.config import settings
+from app.runtime.config import global_vars, settings
 from app.schemas.types import NotificationChannel
 
 
@@ -193,7 +193,10 @@ class TestAgentInteraction(unittest.TestCase):
             ],
         )
 
-        with patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+            settings, "AI_AGENT_ENABLE", True
+        ), patch.object(
             chain.messagehelper, "put"
         ) as message_put, patch.object(
             chain.messageoper, "add"

tests/test_agent_message_routing.py

@@ -11,7 +11,7 @@ from app.agent.tools.impl.ask_user_choice import (
 )
 from app.agent.tools.impl.send_message import SendMessageTool
 from app.chain.message import MessageChain
-from app.runtime.config import settings
+from app.runtime.config import global_vars, settings
 from app.db import SessionFactory
 from app.db.oper.message import MessageOper
 from app.db.models.message import Message
@@ -28,6 +28,13 @@ def _clear_messages() -> None:
         db.commit()
 
 
+def _running_loop_stub() -> Mock:
+    """提供满足主程序生命周期合同的事件循环替身。"""
+    return Mock(
+        **{"is_running.return_value": True, "is_closed.return_value": False}
+    )
+
+
 def test_explicit_ai_message_bypasses_pending_media_interaction():
     """显式 /ai 消息应绕过误触发的媒体交互状态并回到 Agent 会话。"""
     chain = MessageChain()
@@ -69,7 +76,9 @@ def test_explicit_ai_message_is_not_recorded_to_message_history():
     chain.runtime_config = replace(chain.runtime_config, ai_agent_enable=True)
     manager = Mock(process_message=AsyncMock())
 
-    with patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
+    with patch.object(
+        global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+    ), patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
         chain, "_record_user_message"
     ) as record_user_message, patch(
         "app.chain.message.get_running_agent_manager", return_value=manager
@@ -101,7 +110,11 @@ def test_agent_queue_full_is_reported_to_the_originating_channel():
         coro.close()
         return failed
 
-    with patch.object(settings, "AI_AGENT_ENABLE", True), patch(
+    with patch.object(
+        global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+    ), patch.object(
+        settings, "AI_AGENT_ENABLE", True
+    ), patch(
         "app.chain.message.get_running_agent_manager", return_value=manager
     ), patch(
         "app.chain.message.asyncio.run_coroutine_threadsafe",
@@ -127,7 +140,9 @@ def test_message_chain_passes_stable_channel_admin_principal_to_agent():
     chain.runtime_config = replace(chain.runtime_config, ai_agent_enable=True)
     manager = Mock(process_message=AsyncMock())
 
-    with patch.object(settings, "AI_AGENT_ENABLE", True), patch(
+    with patch.object(
+        global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+    ), patch.object(settings, "AI_AGENT_ENABLE", True), patch(
         "app.chain.message.get_running_agent_manager", return_value=manager
     ), patch(
         "app.chain.message.asyncio.run_coroutine_threadsafe",
@@ -151,7 +166,9 @@ def test_message_chain_does_not_trust_channel_display_username():
     chain.runtime_config = replace(chain.runtime_config, ai_agent_enable=True)
     manager = Mock(process_message=AsyncMock())
 
-    with patch.object(settings, "AI_AGENT_ENABLE", True), patch(
+    with patch.object(
+        global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+    ), patch.object(settings, "AI_AGENT_ENABLE", True), patch(
         "app.chain.message.get_running_agent_manager", return_value=manager
     ), patch(
         "app.chain.message.asyncio.run_coroutine_threadsafe",
@@ -175,7 +192,9 @@ def test_message_chain_uses_same_admin_contract_for_slack():
     chain.runtime_config = replace(chain.runtime_config, ai_agent_enable=True)
     manager = Mock(process_message=AsyncMock())
 
-    with patch.object(settings, "AI_AGENT_ENABLE", True), patch(
+    with patch.object(
+        global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+    ), patch.object(settings, "AI_AGENT_ENABLE", True), patch(
         "app.chain.message.get_running_agent_manager", return_value=manager
     ), patch(
         "app.chain.message.asyncio.run_coroutine_threadsafe",
@@ -295,7 +314,9 @@ def test_agent_choice_callback_is_not_recorded_to_message_history():
     manager = Mock(process_message=AsyncMock())
 
     try:
-        with patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
+        with patch.object(
+            global_vars, "CURRENT_EVENT_LOOP", _running_loop_stub()
+        ), patch.object(settings, "AI_AGENT_ENABLE", True), patch.object(
             chain, "_record_user_message"
         ) as record_user_message, patch.object(
             chain, "edit_message", return_value=True

tests/test_global_event_loop.py

@@ -0,0 +1,60 @@
+import asyncio
+
+import pytest
+
+from app.runtime.config import GlobalVar
+
+
+def test_global_loop_requires_lifecycle_owner() -> None:
+    """启动前读取主循环不得隐式创建一个无法执行任务的循环。"""
+    runtime = GlobalVar()
+    runtime.CURRENT_EVENT_LOOP = None
+
+    with pytest.raises(RuntimeError, match="主事件循环尚未启动或已经停止"):
+        _ = runtime.loop
+
+    assert runtime.CURRENT_EVENT_LOOP is None
+
+
+def test_global_loop_rejects_closed_owner() -> None:
+    """已关闭的生命周期 owner 不得继续接收跨线程任务。"""
+    runtime = GlobalVar()
+    loop = asyncio.new_event_loop()
+    runtime.set_loop(loop)
+    loop.close()
+
+    with pytest.raises(RuntimeError, match="主事件循环尚未启动或已经停止"):
+        _ = runtime.loop
+
+
+def test_global_loop_rejects_owner_that_is_not_running() -> None:
+    """未运行的循环不得成为跨线程任务投递目标。"""
+    runtime = GlobalVar()
+    loop = asyncio.new_event_loop()
+    try:
+        runtime.set_loop(loop)
+
+        with pytest.raises(RuntimeError, match="主事件循环尚未启动或已经停止"):
+            _ = runtime.loop
+    finally:
+        loop.close()
+
+
+def test_clear_global_loop_preserves_new_owner() -> None:
+    """迟到的旧生命周期清理不得清除后来登记的循环。"""
+    runtime = GlobalVar()
+    previous = asyncio.new_event_loop()
+
+    async def verify() -> None:
+        current = asyncio.get_running_loop()
+        runtime.set_loop(current)
+        runtime.clear_loop(previous)
+        assert runtime.loop is current
+
+        runtime.clear_loop(current)
+        assert runtime.CURRENT_EVENT_LOOP is None
+
+    try:
+        asyncio.run(verify())
+    finally:
+        previous.close()

tests/test_lifecycle_shutdown.py

@@ -21,6 +21,7 @@ def _patch_lifespan(monkeypatch, *, failing_step: str | None = None) -> dict:
     """隔离 lifespan 的外部依赖，并按名称注入一个关闭失败"""
     monkeypatch.setattr(lifecycle.settings, "MOVIEPILOT_SAFE_MODE", False)
     monkeypatch.setattr(lifecycle.global_vars, "set_loop", MagicMock())
+    monkeypatch.setattr(lifecycle.global_vars, "clear_loop", MagicMock())
     monkeypatch.setattr(lifecycle.global_vars, "stop_system", MagicMock())
 
     for name in (
@@ -134,6 +135,8 @@ def test_lifespan_normal_mode_starts_full_runtime(monkeypatch):
 
     asyncio.run(run_lifespan())
 
+    configured_loop = lifecycle.global_vars.set_loop.call_args.args[0]
+    lifecycle.global_vars.clear_loop.assert_called_once_with(configured_loop)
     lifecycle.init_modules.assert_awaited_once_with()
     lifecycle.prepare_database_component.assert_called_once()
     lifecycle.configure_plugin_services.assert_called_once_with()
@@ -411,6 +414,8 @@ def test_lifespan_fails_fast_when_async_engine_cannot_be_built(monkeypatch):
     with pytest.raises(RuntimeError, match="no async driver"):
         asyncio.run(run_lifespan())
 
+    configured_loop = lifecycle.global_vars.set_loop.call_args.args[0]
+    lifecycle.global_vars.clear_loop.assert_called_once_with(configured_loop)
     # 失败要发生在任何东西被初始化之前，否则模块起来了却没人关：关停块在 yield 处才开始
     lifecycle.init_routers.assert_not_called()
     lifecycle.init_modules.assert_not_called()

tests/test_plugin_monitor_lifecycle.py

@@ -7,6 +7,7 @@ from unittest.mock import AsyncMock, MagicMock
 import pytest
 
 from app.foundation.singleton import Singleton
+from app.runtime.config import global_vars
 from app.runtime.extensions.plugin.dependency import (
     PluginDependencyClassification,
     PluginDependencyInstallResult,
@@ -135,6 +136,11 @@ def _patch_sync_plugins(monkeypatch, manager: MagicMock) -> MagicMock:
         return task_func()
 
     register = MagicMock()
+    monkeypatch.setattr(
+        global_vars,
+        "CURRENT_EVENT_LOOP",
+        asyncio.get_running_loop(),
+    )
     monkeypatch.setattr(plugins_initializer, "configure_plugin_services", lambda: None)
     monkeypatch.setattr(plugins_initializer, "PluginManager", lambda: manager)
     monkeypatch.setattr(plugins_initializer, "execute_task", execute)

tests/test_plugin_settlement_lifecycle.py

@@ -4,6 +4,7 @@ from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 
+from app.runtime.config import global_vars
 from app.startup import lifecycle
 
 
@@ -23,6 +24,11 @@ async def test_runtime_ready_waits_for_scheduler_and_command_refresh(monkeypatch
         return []
 
     monkeypatch.setattr(lifecycle.settings, "MOVIEPILOT_SAFE_MODE", False)
+    monkeypatch.setattr(
+        global_vars,
+        "CURRENT_EVENT_LOOP",
+        asyncio.get_running_loop(),
+    )
     monkeypatch.setattr(lifecycle, "get_plugin_manager", lambda: manager)
     monkeypatch.setattr(lifecycle, "sync_plugins", sync_plugins)
     monkeypatch.setattr(lifecycle, "execute_task", execute_task)

tests/test_telegram_typing_lifecycle.py

@@ -12,6 +12,7 @@ from app.chain.message import MessageChain
 from app.command import Command, _finish_command_processing_status
 from app.modules.telegram import TelegramModule
 from app.modules.telegram.telegram import Telegram
+from app.runtime.config import global_vars
 from app.schemas.types import NotificationChannel
 
 
@@ -263,7 +264,10 @@ class TestTelegramTypingLifecycle(unittest.TestCase):
             ai_agent_enable=True,
         )
 
-        with patch.object(chain, "_record_user_message"), patch.object(
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+                chain, "_record_user_message"
+        ), patch.object(
                 chain, "_mark_message_processing_started"
         ) as start_status, patch(
                 "app.chain.message.get_running_agent_manager",

tests/test_transfer_failed_retry_buttons.py

@@ -4,7 +4,7 @@ import sys
 from dataclasses import replace
 from types import ModuleType
 from types import SimpleNamespace
-from unittest.mock import patch
+from unittest.mock import Mock, patch
 
 sys.modules.setdefault("qbittorrentapi", ModuleType("qbittorrentapi"))
 setattr(sys.modules["qbittorrentapi"], "TorrentFilesList", list)
@@ -15,7 +15,7 @@ sys.modules.setdefault("psutil", ModuleType("psutil"))
 from app.chain.message import MessageChain
 from app.chain.transfer import TransferChain
 from app.application.messaging.interaction import InteractionContext
-from app.runtime.config import settings
+from app.runtime.config import global_vars, settings
 from app.schemas.types import NotificationChannel
 
 
@@ -132,7 +132,10 @@ class TestTransferFailedRetryButtons(unittest.TestCase):
             """关闭被调度的协程：测试中事件循环未运行，不关闭会残留 never-awaited 警告。"""
             coro.close()
 
-        with patch.object(settings, "AI_AGENT_ENABLE", True):
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+            settings, "AI_AGENT_ENABLE", True
+        ):
             with patch(
                 "app.chain._transfer.TransferHistoryOper"
             ) as history_oper_cls, patch(
@@ -209,7 +212,10 @@ class TestTransferFailedRetryButtons(unittest.TestCase):
         from app.agent.prompt.transfer_redo import build_manual_redo_prompt
 
         manager = SimpleNamespace(run_background_prompt=fake_run_background_prompt)
-        with patch.object(settings, "AI_AGENT_ENABLE", True):
+        loop = Mock(**{"is_running.return_value": True, "is_closed.return_value": False})
+        with patch.object(global_vars, "CURRENT_EVENT_LOOP", loop), patch.object(
+            settings, "AI_AGENT_ENABLE", True
+        ):
             with patch(
                 "app.chain._transfer.TransferHistoryOper"
             ) as history_oper_cls, patch(

tests/test_transfer_failure_notification_aggregation.py

@@ -1,4 +1,4 @@
-from unittest.mock import Mock
+from unittest.mock import Mock, patch
 from types import SimpleNamespace
 
 from app.chain import transfer as transfer_module
@@ -48,6 +48,16 @@ class _Loop:
         self.timers.append(timer)
         return timer
 
+    @staticmethod
+    def is_running() -> bool:
+        """该替身代表由生命周期持有的运行中循环。"""
+        return True
+
+    @staticmethod
+    def is_closed() -> bool:
+        """该替身在用例期间保持可用。"""
+        return False
+
 
 def _task(*, episode: int, download_hash: str = "hash-1") -> TransferTask:
     """构造同一媒体不同剧集的整理任务。"""
@@ -153,7 +163,8 @@ def test_enabled_queue_uses_shared_group_key():
         message="整理失败",
         transfer_type="copy",
     )
-    loop = transfer_module.global_vars.loop
+    loop = _Loop()
+    with patch.object(transfer_module.global_vars, "CURRENT_EVENT_LOOP", loop):
         chain.queue_failed_transfer_notification(
             task=task,
             transferinfo=transferinfo,