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events主体框架完成

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UnCLAS-Prommer
2025-08-27 21:51:29 +08:00
parent 2cec83e0dc
commit 8a55e14aa4
9 changed files with 190 additions and 143 deletions
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253
src/plugin_system/core/events_manager.py
View File

@@ -5,7 +5,7 @@ from typing import List, Dict, Optional, Type, Tuple, TYPE_CHECKING
from src.chat.message_receive.message import MessageRecv
from src.chat.message_receive.chat_stream import get_chat_manager
from src.common.logger import get_logger
from src.plugin_system.base.component_types import EventType, EventHandlerInfo, MaiMessages
from src.plugin_system.base.component_types import EventType, EventHandlerInfo, MaiMessages, CustomEventHandlerResult
from src.plugin_system.base.base_events_handler import BaseEventHandler
from .global_announcement_manager import global_announcement_manager
@@ -18,9 +18,23 @@ logger = get_logger("events_manager")
class EventsManager:
def __init__(self):
# 有权重的 events 订阅者注册表
self._events_subscribers: Dict[EventType | str, List[BaseEventHandler]] = {event: [] for event in EventType}
self._events_subscribers: Dict[EventType | str, List[BaseEventHandler]] = {}
self._handler_mapping: Dict[str, Type[BaseEventHandler]] = {} # 事件处理器映射表
self._handler_tasks: Dict[str, List[asyncio.Task]] = {} # 事件处理器正在处理的任务
self._events_result_history: Dict[EventType | str, List[CustomEventHandlerResult]] = {} # 事件的结果历史记录
self._history_enable_map: Dict[EventType | str, bool] = {} # 是否启用历史记录的映射表，同时作为events注册表
# 事件注册（同时作为注册样例）
for event in EventType:
self.register_event(event, enable_history_result=False)
def register_event(self, event_type: EventType | str, enable_history_result: bool = False):
if event_type in self._events_subscribers:
raise ValueError(f"事件类型 {event_type} 已存在")
self._events_subscribers[event_type] = []
self._history_enable_map[event_type] = enable_history_result
if enable_history_result:
self._events_result_history[event_type] = []
def register_event_subscriber(self, handler_info: EventHandlerInfo, handler_class: Type[BaseEventHandler]) -> bool:
"""注册事件处理器
@@ -32,69 +46,23 @@ class EventsManager:
Returns:
bool: 是否注册成功
"""
if not issubclass(handler_class, BaseEventHandler):
logger.error(f"类 {handler_class.__name__} 不是 BaseEventHandler 的子类")
return False
handler_name = handler_info.name
if handler_name in self._handler_mapping:
logger.warning(f"事件处理器 {handler_name} 已存在，跳过注册")
return False
if not issubclass(handler_class, BaseEventHandler):
logger.error(f"类 {handler_class.__name__} 不是 BaseEventHandler 的子类")
if handler_info.event_type not in self._history_enable_map:
logger.error(f"事件类型 {handler_info.event_type} 未注册，无法为其注册处理器 {handler_name}")
return False
self._handler_mapping[handler_name] = handler_class
return self._insert_event_handler(handler_class, handler_info)
def _prepare_message(
self,
event_type: EventType,
message: Optional[MessageRecv] = None,
llm_prompt: Optional[str] = None,
llm_response: Optional["LLMGenerationDataModel"] = None,
stream_id: Optional[str] = None,
action_usage: Optional[List[str]] = None,
) -> Optional[MaiMessages]:
"""根据事件类型和输入，准备和转换消息对象。"""
if message:
return self._transform_event_message(message, llm_prompt, llm_response)
if event_type not in [EventType.ON_START, EventType.ON_STOP]:
assert stream_id, "如果没有消息，必须为非启动/关闭事件提供流ID"
if event_type in [EventType.ON_MESSAGE, EventType.ON_PLAN, EventType.POST_LLM, EventType.AFTER_LLM]:
return self._build_message_from_stream(stream_id, llm_prompt, llm_response)
else:
return self._transform_event_without_message(stream_id, llm_prompt, llm_response, action_usage)
return None # ON_START, ON_STOP事件没有消息体
def _dispatch_handler_task(self, handler: BaseEventHandler, message: Optional[MaiMessages]):
"""分发一个非阻塞（异步）的事件处理任务。"""
try:
task = asyncio.create_task(handler.execute(message))
task_name = f"{handler.plugin_name}-{handler.handler_name}"
task.set_name(task_name)
task.add_done_callback(self._task_done_callback)
self._handler_tasks.setdefault(handler.handler_name, []).append(task)
except Exception as e:
logger.error(f"创建事件处理器任务 {handler.handler_name} 时发生异常: {e}", exc_info=True)
async def _dispatch_intercepting_handler(self, handler: BaseEventHandler, message: Optional[MaiMessages]) -> bool:
"""分发并等待一个阻塞（同步）的事件处理器，返回是否应继续处理。"""
try:
success, continue_processing, result = await handler.execute(message)
if not success:
logger.error(f"EventHandler {handler.handler_name} 执行失败: {result}")
else:
logger.debug(f"EventHandler {handler.handler_name} 执行成功: {result}")
return continue_processing
except Exception as e:
logger.error(f"EventHandler {handler.handler_name} 发生异常: {e}", exc_info=True)
return True # 发生异常时默认不中断其他处理
async def handle_mai_events(
self,
event_type: EventType,
@@ -115,6 +83,8 @@ class EventsManager:
transformed_message = self._prepare_message(
event_type, message, llm_prompt, llm_response, stream_id, action_usage
)
if transformed_message:
transformed_message = transformed_message.deepcopy()
# 2. 获取并遍历处理器
handlers = self._events_subscribers.get(event_type, [])
@@ -137,16 +107,68 @@ class EventsManager:
handler.set_plugin_config(plugin_config)
# 4. 根据类型分发任务
if handler.intercept_message:
if handler.intercept_message or event_type == EventType.ON_STOP: # 让ON_STOP的所有事件处理器都发挥作用，防止还没执行即被取消
# 阻塞执行，并更新 continue_flag
should_continue = await self._dispatch_intercepting_handler(handler, transformed_message)
should_continue = await self._dispatch_intercepting_handler(handler, event_type, transformed_message)
continue_flag = continue_flag and should_continue
else:
# 异步执行，不阻塞
self._dispatch_handler_task(handler, transformed_message)
self._dispatch_handler_task(handler, event_type, transformed_message)
return continue_flag
async def cancel_handler_tasks(self, handler_name: str) -> None:
tasks_to_be_cancelled = self._handler_tasks.get(handler_name, [])
if remaining_tasks := [task for task in tasks_to_be_cancelled if not task.done()]:
for task in remaining_tasks:
task.cancel()
try:
await asyncio.wait_for(asyncio.gather(*remaining_tasks, return_exceptions=True), timeout=5)
logger.info(f"已取消事件处理器 {handler_name} 的所有任务")
except asyncio.TimeoutError:
logger.warning(f"取消事件处理器 {handler_name} 的任务超时，开始强制取消")
except Exception as e:
logger.error(f"取消事件处理器 {handler_name} 的任务时发生异常: {e}")
if handler_name in self._handler_tasks:
del self._handler_tasks[handler_name]
async def unregister_event_subscriber(self, handler_name: str) -> bool:
"""取消注册事件处理器"""
if handler_name not in self._handler_mapping:
logger.warning(f"事件处理器 {handler_name} 不存在，无法取消注册")
return False
await self.cancel_handler_tasks(handler_name)
handler_class = self._handler_mapping.pop(handler_name)
if not self._remove_event_handler_instance(handler_class):
return False
logger.info(f"事件处理器 {handler_name} 已成功取消注册")
return True
async def get_event_result_history(self, event_type: EventType | str) -> List[CustomEventHandlerResult]:
"""获取事件的结果历史记录"""
if event_type == EventType.UNKNOWN:
raise ValueError("未知事件类型")
if event_type not in self._history_enable_map:
raise ValueError(f"事件类型 {event_type} 未注册")
if not self._history_enable_map[event_type]:
raise ValueError(f"事件类型 {event_type} 的历史记录未启用")
return self._events_result_history[event_type]
async def clear_event_result_history(self, event_type: EventType | str) -> None:
"""清空事件的结果历史记录"""
if event_type == EventType.UNKNOWN:
raise ValueError("未知事件类型")
if event_type not in self._history_enable_map:
raise ValueError(f"事件类型 {event_type} 未注册")
if not self._history_enable_map[event_type]:
raise ValueError(f"事件类型 {event_type} 的历史记录未启用")
self._events_result_history[event_type] = []
def _insert_event_handler(self, handler_class: Type[BaseEventHandler], handler_info: EventHandlerInfo) -> bool:
"""插入事件处理器到对应的事件类型列表中并设置其插件配置"""
if handler_class.event_type == EventType.UNKNOWN:
@@ -179,7 +201,10 @@ class EventsManager:
return False
def _transform_event_message(
self, message: MessageRecv, llm_prompt: Optional[str] = None, llm_response: Optional["LLMGenerationDataModel"] = None
self,
message: MessageRecv,
llm_prompt: Optional[str] = None,
llm_response: Optional["LLMGenerationDataModel"] = None,
) -> MaiMessages:
"""转换事件消息格式"""
# 直接赋值部分内容
@@ -263,52 +288,100 @@ class EventsManager:
additional_data={"response_is_processed": True},
)
def _task_done_callback(self, task: asyncio.Task[Tuple[bool, bool, str | None]]):
def _prepare_message(
self,
event_type: EventType,
message: Optional[MessageRecv] = None,
llm_prompt: Optional[str] = None,
llm_response: Optional["LLMGenerationDataModel"] = None,
stream_id: Optional[str] = None,
action_usage: Optional[List[str]] = None,
) -> Optional[MaiMessages]:
"""根据事件类型和输入，准备和转换消息对象。"""
if message:
return self._transform_event_message(message, llm_prompt, llm_response)
if event_type not in [EventType.ON_START, EventType.ON_STOP]:
assert stream_id, "如果没有消息，必须为非启动/关闭事件提供流ID"
if event_type in [EventType.ON_MESSAGE, EventType.ON_PLAN, EventType.POST_LLM, EventType.AFTER_LLM]:
return self._build_message_from_stream(stream_id, llm_prompt, llm_response)
else:
return self._transform_event_without_message(stream_id, llm_prompt, llm_response, action_usage)
return None # ON_START, ON_STOP事件没有消息体
def _dispatch_handler_task(
self, handler: BaseEventHandler, event_type: EventType | str, message: Optional[MaiMessages] = None
):
"""分发一个非阻塞（异步）的事件处理任务。"""
if event_type == EventType.UNKNOWN:
raise ValueError("未知事件类型")
try:
task = asyncio.create_task(handler.execute(message))
task_name = f"{handler.plugin_name}-{handler.handler_name}"
task.set_name(task_name)
task.add_done_callback(lambda t: self._task_done_callback(t, event_type))
self._handler_tasks.setdefault(handler.handler_name, []).append(task)
except Exception as e:
logger.error(f"创建事件处理器任务 {handler.handler_name} 时发生异常: {e}", exc_info=True)
async def _dispatch_intercepting_handler(
self, handler: BaseEventHandler, event_type: EventType | str, message: Optional[MaiMessages] = None
) -> bool:
"""分发并等待一个阻塞（同步）的事件处理器，返回是否应继续处理。"""
if event_type == EventType.UNKNOWN:
raise ValueError("未知事件类型")
if event_type not in self._history_enable_map:
raise ValueError(f"事件类型 {event_type} 未注册")
try:
success, continue_processing, return_message, custom_result = await handler.execute(message)
if not success:
logger.error(f"EventHandler {handler.handler_name} 执行失败: {return_message}")
else:
logger.debug(f"EventHandler {handler.handler_name} 执行成功: {return_message}")
if self._history_enable_map[event_type] and custom_result:
self._events_result_history[event_type].append(custom_result)
return continue_processing
except KeyError:
logger.error(f"事件 {event_type} 注册的历史记录启用情况与实际不符合")
return True
except Exception as e:
logger.error(f"EventHandler {handler.handler_name} 发生异常: {e}", exc_info=True)
return True # 发生异常时默认不中断其他处理
def _task_done_callback(
self,
task: asyncio.Task[Tuple[bool, bool, str | None, CustomEventHandlerResult | None]],
event_type: EventType | str,
):
"""任务完成回调"""
task_name = task.get_name() or "Unknown Task"
if event_type == EventType.UNKNOWN:
raise ValueError("未知事件类型")
if event_type not in self._history_enable_map:
raise ValueError(f"事件类型 {event_type} 未注册")
try:
success, _, result = task.result() # 忽略是否继续的标志，因为消息本身未被拦截
success, _, result, custom_result = task.result() # 忽略是否继续的标志，因为消息本身未被拦截
if success:
logger.debug(f"事件处理任务 {task_name} 已成功完成: {result}")
else:
logger.error(f"事件处理任务 {task_name} 执行失败: {result}")
if self._history_enable_map[event_type] and custom_result:
self._events_result_history[event_type].append(custom_result)
except asyncio.CancelledError:
pass
except KeyError:
logger.error(f"事件 {event_type} 注册的历史记录启用情况与实际不符合")
except Exception as e:
logger.error(f"事件处理任务 {task_name} 发生异常: {e}")
finally:
with contextlib.suppress(ValueError, KeyError):
self._handler_tasks[task_name].remove(task)
async def cancel_handler_tasks(self, handler_name: str) -> None:
tasks_to_be_cancelled = self._handler_tasks.get(handler_name, [])
if remaining_tasks := [task for task in tasks_to_be_cancelled if not task.done()]:
for task in remaining_tasks:
task.cancel()
try:
await asyncio.wait_for(asyncio.gather(*remaining_tasks, return_exceptions=True), timeout=5)
logger.info(f"已取消事件处理器 {handler_name} 的所有任务")
except asyncio.TimeoutError:
logger.warning(f"取消事件处理器 {handler_name} 的任务超时，开始强制取消")
except Exception as e:
logger.error(f"取消事件处理器 {handler_name} 的任务时发生异常: {e}")
if handler_name in self._handler_tasks:
del self._handler_tasks[handler_name]
async def unregister_event_subscriber(self, handler_name: str) -> bool:
"""取消注册事件处理器"""
if handler_name not in self._handler_mapping:
logger.warning(f"事件处理器 {handler_name} 不存在，无法取消注册")
return False
await self.cancel_handler_tasks(handler_name)
handler_class = self._handler_mapping.pop(handler_name)
if not self._remove_event_handler_instance(handler_class):
return False
logger.info(f"事件处理器 {handler_name} 已成功取消注册")
return True
events_manager = EventsManager()

9
src/plugin_system/core/to_do_event.md
View File

@@ -1,13 +1,12 @@
- [x] 自定义事件
- [ ] <del>允许handler随时订阅</del>
- [ ] 允许handler随时取消订阅
- [ ] 允许其他组件给handler增加订阅
- [ ] 允许其他组件给handler取消订阅
- [x] 允许其他组件给handler增加订阅
- [x] 允许其他组件给handler取消订阅
- [ ] <del>允许一个handler订阅多个事件</del>
- [ ] event激活时给handler传递参数
- [x] event激活时给handler传递参数
- [ ] handler能拿到所有handlers的结果（按照处理权重）
- [x] 随时注册
- [ ] 删除event
- [ ] <del>删除event</del>
- [ ] 必要性？
- [ ] 能够更改prompt
- [ ] 能够更改llm_response