ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）
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# coding: utf-8
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# Copyright (c) 2025 inclusionAI.
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import asyncio
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import time
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import traceback
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from aworld.core.agent.base import BaseAgent
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from aworld.core.exceptions import AWorldRuntimeException
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import aworld.trace as trace
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from typing import List, Callable, Any
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from aworld.core.common import TaskItem, ActionModel
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from aworld.core.context.base import Context
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from aworld.agents.llm_agent import Agent
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from aworld.core.event.base import Message, Constants, TopicType, ToolMessage, AgentMessage
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from aworld.core.task import Task, TaskResponse
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from aworld.events.manager import EventManager
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from aworld.logs.util import logger
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from aworld.replay_buffer import EventReplayBuffer
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from aworld.runners import HandlerFactory
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from aworld.runners.handler.base import DefaultHandler
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from aworld.runners.task_runner import TaskRunner
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from aworld.utils.common import override_in_subclass, new_instance
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from aworld.runners.state_manager import EventRuntimeStateManager
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class TaskEventRunner(TaskRunner):
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"""Event driven task runner."""
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def __init__(self, task: Task, *args, **kwargs):
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super().__init__(task, *args, **kwargs)
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self._task_response = None
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self.event_mng = EventManager(self.context)
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self.hooks = {}
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self.handlers = []
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self.init_messages = []
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self.background_tasks = set()
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self.state_manager = EventRuntimeStateManager.instance()
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self.replay_buffer = EventReplayBuffer()
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async def do_run(self, context: Context = None):
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if self.swarm and not self.swarm.initialized:
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raise AWorldRuntimeException("swarm needs to use `reset` to init first.")
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if not self.init_messages:
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raise AWorldRuntimeException("no question event to solve.")
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async with trace.task_span(self.init_messages[0].session_id, self.task):
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for msg in self.init_messages:
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await self.event_mng.emit_message(msg)
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await self._do_run()
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await self._save_trajectories()
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return self._response()
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async def pre_run(self):
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logger.debug(f"[TaskEventRunner] pre_run start {self.task.id}")
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await super().pre_run()
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self.event_mng.context = self.context
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self.context.event_manager = self.event_mng
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if self.swarm and not self.swarm.max_steps:
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self.swarm.max_steps = self.task.conf.get('max_steps', 10)
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observation = self.observation
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if not observation:
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raise RuntimeError("no observation, check run process")
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self._build_first_message()
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if self.swarm:
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logger.debug(f"swarm: {self.swarm}")
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# register agent handler
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for _, agent in self.swarm.agents.items():
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if override_in_subclass('async_policy', agent.__class__, Agent):
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await self.event_mng.register(Constants.AGENT, agent.id(), agent.async_run)
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else:
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await self.event_mng.register(Constants.AGENT, agent.id(), agent.run)
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# register tool handler
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for key, tool in self.tools.items():
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if tool.handler:
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await self.event_mng.register(Constants.TOOL, tool.name(), tool.handler)
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else:
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await self.event_mng.register(Constants.TOOL, tool.name(), tool.step)
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handlers = self.event_mng.event_bus.get_topic_handlers(
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Constants.TOOL, tool.name())
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if not handlers:
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await self.event_mng.register(Constants.TOOL, Constants.TOOL, tool.step)
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self._stopped = asyncio.Event()
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# handler of process in framework
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handler_list = self.conf.get("handlers")
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if handler_list:
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# handler class name
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for hand in handler_list:
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self.handlers.append(new_instance(hand, self))
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else:
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for handler in HandlerFactory:
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self.handlers.append(HandlerFactory(handler, runner=self))
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logger.debug(f"[TaskEventRunner] pre_run finish {self.task.id}")
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def _build_first_message(self):
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# build the first message
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if self.agent_oriented:
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agents = self.swarm.communicate_agent
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if isinstance(agents, BaseAgent):
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agents = [agents]
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for agent in agents:
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self.init_messages.append(AgentMessage(payload=self.observation,
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sender='runner',
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receiver=agent.id(),
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session_id=self.context.session_id,
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headers={'context': self.context}))
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else:
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actions: List[ActionModel] = self.observation.content
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action_dict = {}
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for action in actions:
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if action.tool_name not in action_dict:
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action_dict[action.tool_name] = []
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action_dict[action.tool_name].append(action)
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for tool_name, actions in action_dict.items():
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self.init_messages.append(ToolMessage(payload=actions,
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sender='runner',
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receiver=tool_name,
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session_id=self.context.session_id,
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headers={'context': self.context}))
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async def _common_process(self, message: Message) -> List[Message]:
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logger.debug(
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f"[TaskEventRunner] _common_process start {self.task.id}, message_id = {message.id}")
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event_bus = self.event_mng.event_bus
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key = message.category
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transformer = self.event_mng.get_transform_handler(key)
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if transformer:
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message = await event_bus.transform(message, handler=transformer)
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results = []
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handlers = self.event_mng.get_handlers(key)
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async with trace.message_span(message=message):
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logger.debug(
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f"[TaskEventRunner] start_message_node start {self.task.id}, message_id = {message.id}")
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self.state_manager.start_message_node(message)
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logger.debug(
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f"[TaskEventRunner] start_message_node end {self.task.id}, message_id = {message.id}")
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if handlers:
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if message.topic:
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handlers = {message.topic: handlers.get(message.topic, [])}
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elif message.receiver:
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handlers = {message.receiver: handlers.get(
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message.receiver, [])}
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else:
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logger.warning(
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f"{message.id} no receiver and topic, be ignored.")
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handlers.clear()
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handle_tasks = []
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for topic, handler_list in handlers.items():
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if not handler_list:
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logger.warning(f"{topic} no handler, ignore.")
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continue
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for handler in handler_list:
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t = asyncio.create_task(
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self._handle_task(message, handler))
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handle_tasks.append(t)
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logger.debug(
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f"[TaskEventRunner] _common_process handle_tasks collect finished {self.task.id}, message_id = {message.id}")
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# For _handle_task case, end message node asynchronously
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async def async_end_message_node():
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logger.debug(
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f"[TaskEventRunner] async_end_message_node STARTED {self.task.id}, message_id = {message.id}")
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try:
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# Wait for all _handle_task tasks to complete before ending message node
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if handle_tasks:
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logger.debug(
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f"[TaskEventRunner] async_end_message_node {self.task.id} Before gather {len(handle_tasks)} tasks")
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await asyncio.gather(*handle_tasks)
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logger.debug(
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f"[TaskEventRunner] async_end_message_node {self.task.id} After gather tasks completed")
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logger.debug(
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f"[TaskEventRunner] _common_process handle_tasks process end_message_node start {self.task.id}, message_id = {message.id}")
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self.state_manager.end_message_node(message)
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logger.debug(
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f"[TaskEventRunner] _common_process handle_tasks process finished {self.task.id}, message_id = {message.id}")
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except Exception as e:
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logger.error(f"Error in async_end_message_node: {e}")
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raise
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end_node_task = asyncio.create_task(async_end_message_node())
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self.background_tasks.add(end_node_task)
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end_node_task.add_done_callback(self.background_tasks.discard)
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else:
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# not handler, return raw message
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results.append(message)
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t = asyncio.create_task(self._raw_task(results))
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self.background_tasks.add(t)
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t.add_done_callback(self.background_tasks.discard)
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# wait until it is complete
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await t
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self.state_manager.end_message_node(message)
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logger.debug(
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f"[TaskEventRunner] _common_process return results {self.task.id}, message_id = {message.id}, ")
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return results
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async def _handle_task(self, message: Message, handler: Callable[..., Any]):
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con = message
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async with trace.handler_span(message=message, handler=handler):
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try:
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logger.debug(
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f"event_runner _handle_task - self: {self}, swarm: {self.swarm}, event_mng: {self.event_mng}, event_bus: {self.event_mng.event_bus}, message: {message}")
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logger.info(
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f"[TaskEventRunner] {self.task.id} _handle_task start, message: {message.id}")
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if asyncio.iscoroutinefunction(handler):
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con = await handler(con)
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else:
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con = handler(con)
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logger.info(
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f"[TaskEventRunner] {self.task.id} _handle_task finished message= {message.id}, session_id = {self.task.session_id}")
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if isinstance(con, Message):
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# process in framework
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self.state_manager.save_message_handle_result(name=handler.__name__,
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message=message,
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result=con)
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async for event in self._inner_handler_process(
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results=[con],
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handlers=self.handlers
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):
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await self.event_mng.emit_message(event)
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else:
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self.state_manager.save_message_handle_result(name=handler.__name__,
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message=message)
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except Exception as e:
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logger.warning(
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f"{handler} process fail. {traceback.format_exc()}")
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error_msg = Message(
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category=Constants.TASK,
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payload=TaskItem(msg=str(e), data=message),
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sender=self.name,
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session_id=self.context.session_id,
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topic=TopicType.ERROR,
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headers={"context": self.context}
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)
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self.state_manager.save_message_handle_result(name=handler.__name__,
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message=message,
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result=error_msg)
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await self.event_mng.emit_message(error_msg)
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async def _raw_task(self, messages: List[Message]):
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# process in framework
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async for event in self._inner_handler_process(
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results=messages,
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handlers=self.handlers
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):
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await self.event_mng.emit_message(event)
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async def _inner_handler_process(self, results: List[Message], handlers: List[DefaultHandler]):
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# can use runtime backend to parallel
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for handler in handlers:
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for result in results:
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async for event in handler.handle(result):
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yield event
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async def _do_run(self):
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logger.debug(f"[TaskEventRunner] _do_run start {self.task.id}")
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"""Task execution process in real."""
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start = time.time()
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msg = None
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answer = None
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message = None
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try:
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while True:
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if self.task.timeout > 0 and time.time() - self.start_time > self.task.timeout:
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logger.warn(
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f"[TaskEventRunner] {self.task.id} task timeout after {time.time() - self.start_time} seconds.")
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self._task_response = TaskResponse(answer='',
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success=False,
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context=message.context,
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id=self.task.id,
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time_cost=(time.time() - self.start_time),
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usage=self.context.token_usage,
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msg='cancellation: task timeout',
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status='cancelled')
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await self.stop()
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if await self.is_stopped():
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logger.debug(
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f"[TaskEventRunner] break snap {self.task.id}")
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await self.event_mng.done()
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logger.info(
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f" [TaskEventRunner] stop task {self.task.id}...")
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if self._task_response is None:
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# send msg to output
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self._task_response = TaskResponse(msg=msg,
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answer=answer,
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context=message.context,
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success=True if not msg else False,
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id=self.task.id,
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time_cost=(
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time.time() - start),
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usage=self.context.token_usage,
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status='success' if not msg else 'failed')
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break
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logger.debug(f"[TaskEventRunner] next snap {self.task.id}")
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# consume message
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message: Message = await self.event_mng.consume()
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logger.debug(
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f"[TaskEventRunner] next consume finished {self.task.id}, event_bus: {self.event_mng.event_bus},: message = {message}")
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# use registered handler to process message
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await self._common_process(message)
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logger.debug(
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f"[TaskEventRunner] _common_process finished {self.task.id}")
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except Exception as e:
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logger.error(f"consume message fail. {traceback.format_exc()}")
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error_msg = Message(
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category=Constants.TASK,
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payload=TaskItem(msg=str(e), data=message),
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sender=self.name,
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session_id=self.context.session_id,
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topic=TopicType.ERROR,
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headers={"context": self.context}
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)
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self.state_manager.save_message_handle_result(name=TaskEventRunner.__name__,
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message=message,
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result=error_msg)
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await self.event_mng.emit_message(error_msg)
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finally:
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logger.debug(
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f"[TaskEventRunner] _do_run finished await_is_stopped {self.task.id}")
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if await self.is_stopped():
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logger.info(
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f"[TaskEventRunner] _do_run finished is_stopped {self.task.id}")
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await self.context.update_task_after_run(self._task_response)
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if not self.task.is_sub_task:
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logger.info(f"FINISHED|TaskEventRunner|outputs|{self.task.id} {self.task.is_sub_task}")
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await self.task.outputs.mark_completed()
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if self.swarm and self.swarm.agents:
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for agent_name, agent in self.swarm.agents.items():
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try:
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if hasattr(agent, 'sandbox') and agent.sandbox:
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await agent.sandbox.cleanup()
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except Exception as e:
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logger.warning(
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f"event_runner Failed to cleanup sandbox for agent {agent_name}: {e}")
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async def stop(self):
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self._stopped.set()
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async def is_stopped(self):
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return self._stopped.is_set()
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def response(self):
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return self._task_response
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def _response(self):
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if self.context.get_task().conf and self.context.get_task().conf.resp_carry_context == False:
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self._task_response.context = None
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return self._task_response
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async def _save_trajectories(self):
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try:
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messages = self.event_mng.messages_by_task_id(self.task.id)
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trajectory = await self.replay_buffer.get_trajectory(messages, self.task.id, self.state_manager)
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self._task_response.trajectory = trajectory
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except Exception as e:
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logger.error(f"Failed to get trajectories: {str(e)}.{traceback.format_exc()}")
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