AgentCoreService/agent_service.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
import re
import sys
import time
import random
from typing import Dict, List, Tuple, Any, Optional
import logging
from datetime import datetime, timedelta
import traceback

import apscheduler.triggers.cron
from apscheduler.schedulers.background import BackgroundScheduler

import chat_service
import configs
import logging_service
from logging_service import logger
from chat_service import CozeChat, ChatServiceType
from dialogue_manager import DialogueManager, DialogueState, DialogueStateCache
from user_manager import UserManager, LocalUserManager, MySQLUserManager, MySQLUserRelationManager, UserRelationManager
from openai import OpenAI
from message_queue_backend import MessageQueueBackend, MemoryQueueBackend, AliyunRocketMQQueueBackend
from user_profile_extractor import UserProfileExtractor
import threading
from message import MessageType, Message, MessageChannel


class AgentService:
    def __init__(
        self,
        receive_backend: MessageQueueBackend,
        send_backend: MessageQueueBackend,
        human_backend: MessageQueueBackend,
        user_manager: UserManager,
        user_relation_manager: UserRelationManager,
        chat_service_type: ChatServiceType = ChatServiceType.OPENAI_COMPATIBLE
    ):
        self.receive_queue = receive_backend
        self.send_queue = send_backend
        self.human_queue = human_backend

        # 核心服务模块
        self.agent_state_cache = DialogueStateCache()
        self.user_manager = user_manager
        self.user_relation_manager = user_relation_manager
        self.user_profile_extractor = UserProfileExtractor()
        self.agent_registry: Dict[str, DialogueManager] = {}

        self.llm_client = OpenAI(
            api_key=chat_service.VOLCENGINE_API_TOKEN,
            base_url=chat_service.VOLCENGINE_BASE_URL
        )
        # DeepSeek on Volces
        self.model_name = chat_service.VOLCENGINE_MODEL_DEEPSEEK_V3
        coze_config = configs.get()['chat_api']['coze']
        coze_oauth_app = CozeChat.get_oauth_app(
            coze_config['oauth_client_id'], coze_config['private_key_path'], str(coze_config['public_key_id']),
            account_id=coze_config.get('account_id', None)
        )
        self.coze_client = CozeChat(
            base_url=chat_service.COZE_CN_BASE_URL,
            auth_app=coze_oauth_app
        )
        self.chat_service_type = chat_service_type

        # 定时任务调度器
        self.scheduler = BackgroundScheduler()
        self.scheduler.start()

    def setup_initiative_conversations(self, schedule_params: Optional[Dict] = None):
        if not schedule_params:
            schedule_params = {'hour': '8,16,20'}
        self.scheduler.add_job(
            self._check_initiative_conversations,
            apscheduler.triggers.cron.CronTrigger(**schedule_params)
        )

    def _get_agent_instance(self, staff_id: str, user_id: str) -> DialogueManager:
        """获取Agent实例"""
        agent_key = 'agent_{}_{}'.format(staff_id, user_id)
        if agent_key not in self.agent_registry:
            self.agent_registry[agent_key] = DialogueManager(
                staff_id, user_id, self.user_manager, self.agent_state_cache)
        return self.agent_registry[agent_key]

    def process_messages(self):
        """持续处理接收队列消息"""
        while True:
            message = self.receive_queue.consume()
            if message:
                try:
                    self.process_single_message(message)
                    self.receive_queue.ack(message)
                except Exception as e:
                    logger.error("Error processing message: {}".format(e))
                    traceback.print_exc()
            time.sleep(1)

    def _update_user_profile(self, user_id, user_profile, message: str):
        profile_to_update = self.user_profile_extractor.extract_profile_info(user_profile, message)
        if not profile_to_update:
            logger.debug("user_id: {}, no profile info extracted".format(user_id))
            return
        logger.warning("update user profile: {}".format(profile_to_update))
        merged_profile = self.user_profile_extractor.merge_profile_info(user_profile, profile_to_update)
        self.user_manager.save_user_profile(user_id, merged_profile)
        return merged_profile

    def _schedule_aggregation_trigger(self, staff_id: str, user_id: str, delay_sec: int):
        logger.debug("user: {}, schedule trigger message after {} seconds".format(user_id, delay_sec))
        message_ts = int((time.time() + delay_sec) * 1000)
        message = Message.build(MessageType.AGGREGATION_TRIGGER, MessageChannel.SYSTEM, user_id, staff_id, None, message_ts)
        # 系统消息使用特定的msgId，无实际意义
        message.msgId = -MessageType.AGGREGATION_TRIGGER.value
        self.scheduler.add_job(lambda: self.receive_queue.produce(message),
                               'date',
                               run_date=datetime.now() + timedelta(seconds=delay_sec))

    def process_single_message(self, message: Message):
        user_id = message.sender
        staff_id = message.receiver

        # 获取用户信息和Agent实例
        user_profile = self.user_manager.get_user_profile(user_id)
        agent = self._get_agent_instance(staff_id, user_id)

        # 更新对话状态
        logger.debug("process message: {}".format(message))
        need_response, message_text = agent.update_state(message)
        logger.debug("user: {}, next state: {}".format(user_id, agent.current_state))

        # 根据状态路由消息
        if agent.is_in_human_intervention():
            self._route_to_human_intervention(user_id, message)
        elif agent.current_state == DialogueState.MESSAGE_AGGREGATING:
            if message.type != MessageType.AGGREGATION_TRIGGER:
                # 产生一个触发器，但是不能由触发器递归产生
                logger.debug("user: {}, waiting next message for aggregation".format(user_id))
                self._schedule_aggregation_trigger(staff_id, user_id, agent.message_aggregation_sec)
            return
        elif need_response:
            # 先更新用户画像再处理回复
            self._update_user_profile(user_id, user_profile, message_text)
            self._get_chat_response(user_id, agent, message_text)
        else:
            logger.debug(f"staff[{staff_id}], user[{user_id}]: do not need response")

    def _route_to_human_intervention(self, user_id: str, origin_message: Message):
        """路由到人工干预"""
        self.human_queue.produce(Message.build(
            MessageType.TEXT,
            origin_message.channel,
            origin_message.sender,
            origin_message.receiver,
            "用户对话需人工介入，用户名：{}".format(user_id),
            int(time.time() * 1000)
        ))

    def _check_initiative_conversations(self):
        """定时检查主动发起对话"""
        for staff_user in self.user_relation_manager.list_staff_users():
            staff_id = staff_user['staff_id']
            user_id = staff_user['user_id']
            agent = self._get_agent_instance(staff_id, user_id)
            should_initiate = agent.should_initiate_conversation()

            if should_initiate:
                logger.warning("user: {}, initiate conversation".format(user_id))
                resp = self._get_chat_response(user_id, agent, None)
                if resp:
                    time.sleep(random.randint(10,20))
            else:
                logger.debug("user: {}, do not initiate conversation".format(user_id))

    def _get_chat_response(self, user_id: str, agent: DialogueManager,
                           user_message: Optional[str]):
        """处理LLM响应"""
        chat_config = agent.build_chat_configuration(user_message, self.chat_service_type)
        logger.debug(chat_config)
        chat_response = self._call_chat_api(chat_config)
        chat_response = self.sanitize_response(chat_response)

        if response := agent.generate_response(chat_response):
            logger.warning(f"staff[{agent.staff_id}] user[{user_id}]: response: {response}")
            current_ts = int(time.time() * 1000)
            user_tags = self.user_relation_manager.get_user_tags(user_id)
            # FIXME(zhoutian)
            # 测试期间临时逻辑，只发送特定的账号或特定用户
            if not (agent.staff_id in set(['1688854492669990'])
                    or 'AgentTest1' in user_tags):
                logger.warning(f"staff[{agent.staff_id}] user[{user_id}]: skip reply")
                return None
            self.send_queue.produce(
                Message.build(MessageType.TEXT, MessageChannel.CORP_WECHAT,
                              agent.staff_id, user_id, response, current_ts)
            )
            return response
        else:
            logger.warning(f"staff[{agent.staff_id}] user[{user_id}]: no response generated")
            return None

    def _call_chat_api(self, chat_config: Dict) -> str:
        if configs.get().get('debug_flags', {}).get('disable_llm_api_call', False):
            return 'LLM模拟回复 {}'.format(datetime.now().strftime("%Y-%m-%d %H:%M:%S"))
        if self.chat_service_type == ChatServiceType.OPENAI_COMPATIBLE:
            chat_completion = self.llm_client.chat.completions.create(
                messages=chat_config['messages'],
                model=self.model_name,
            )
            response = chat_completion.choices[0].message.content
        elif self.chat_service_type == ChatServiceType.COZE_CHAT:
            bot_user_id = 'dev_user'
            response = self.coze_client.create(
                chat_config['bot_id'], bot_user_id, chat_config['messages'],
                chat_config['custom_variables']
            )
        else:
            raise Exception('Unsupported chat service type: {}'.format(self.chat_service_type))
        return response

    @staticmethod
    def sanitize_response(response: str):
        pattern = r'\[?\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}\]?'
        response = re.sub(pattern, '', response)
        response = response.strip()
        return response

if __name__ == "__main__":
    config = configs.get()
    logging_service.setup_root_logger()
    logger.warning("current env: {}".format(configs.get_env()))
    scheduler_logger = logging.getLogger('apscheduler')
    scheduler_logger.setLevel(logging.WARNING)

    use_aliyun_mq = config['debug_flags']['use_aliyun_mq']

    # 初始化不同队列的后端
    if use_aliyun_mq:
        receive_queue = AliyunRocketMQQueueBackend(
            config['mq']['endpoints'],
            config['mq']['instance_id'],
            config['mq']['receive_topic'],
            has_consumer=True, has_producer=True,
            group_id=config['mq']['receive_group']
        )
        send_queue = AliyunRocketMQQueueBackend(
            config['mq']['endpoints'],
            config['mq']['instance_id'],
            config['mq']['send_topic'],
            has_consumer=False, has_producer=True
        )
    else:
        receive_queue = MemoryQueueBackend()
        send_queue = MemoryQueueBackend()
    human_queue = MemoryQueueBackend()

    # 初始化用户管理服务
    # FIXME(zhoutian): 如果不使用MySQL，此数据库配置非必须
    user_db_config = config['storage']['user']
    staff_db_config = config['storage']['staff']
    if config['debug_flags'].get('use_local_user_storage', False):
        user_manager = LocalUserManager()
    else:
        user_manager = MySQLUserManager(user_db_config['mysql'], user_db_config['table'], staff_db_config['table'])

    wecom_db_config = config['storage']['user_relation']
    user_relation_manager = MySQLUserRelationManager(
        user_db_config['mysql'], wecom_db_config['mysql'],
        config['storage']['staff']['table'],
        user_db_config['table'],
        wecom_db_config['table']['staff'],
        wecom_db_config['table']['relation'],
        wecom_db_config['table']['user']
    )

    # 创建Agent服务
    service = AgentService(
        receive_backend=receive_queue,
        send_backend=send_queue,
        human_backend=human_queue,
        user_manager=user_manager,
        user_relation_manager=user_relation_manager,
        chat_service_type=ChatServiceType.COZE_CHAT
    )
    # 只有企微场景需要主动发起
    if not config['debug_flags'].get('disable_active_conversation', False):
        service.setup_initiative_conversations({'second': '5,35'})

    process_thread = threading.Thread(target=service.process_messages)
    process_thread.start()

    if not config['debug_flags'].get('console_input', False):
        process_thread.join()
        sys.exit(0)

    message_id = 0
    while True:
        print("Input next message: ")
        text = sys.stdin.readline().strip()
        if not text:
            continue
        message_id += 1
        sender = '7881299670930896'
        receiver = '1688854492669990'
        if text == MessageType.AGGREGATION_TRIGGER.name:
            message = Message.build(MessageType.AGGREGATION_TRIGGER, MessageChannel.CORP_WECHAT,
                sender, receiver, None, int(time.time() * 1000))
        else:
            message = Message.build(MessageType.TEXT, MessageChannel.CORP_WECHAT,
                sender,receiver, text, int(time.time() * 1000)
            )
        message.msgId = message_id
        receive_queue.produce(message)
        time.sleep(0.1)
    process_thread.join()