405 lines
14 KiB
Python
405 lines
14 KiB
Python
import asyncio
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import json
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import traceback
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import uuid
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import yaml
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from pathlib import Path
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from fastapi import APIRouter, Body, Depends, HTTPException
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from fastapi.responses import StreamingResponse
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from langchain_core.messages import AIMessageChunk, HumanMessage
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from pydantic import BaseModel
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from sqlalchemy.orm import Session
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from server.models.thread_model import Thread
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from server.models.user_model import User
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from server.routers.auth_router import get_admin_user
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from server.utils.auth_middleware import get_db, get_required_user
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from src import config, executor
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from src.agents import agent_manager
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from src.agents.common.tools import gen_tool_info, get_buildin_tools
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from src.models import select_model
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from src.utils.logging_config import logger
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chat = APIRouter(prefix="/chat", tags=["chat"])
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# =============================================================================
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# > === 智能体管理分组 ===
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# =============================================================================
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@chat.get("/default_agent")
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async def get_default_agent(current_user: User = Depends(get_required_user)):
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"""获取默认智能体ID（需要登录）"""
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try:
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default_agent_id = config.default_agent_id
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# 如果没有设置默认智能体，尝试获取第一个可用的智能体
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if not default_agent_id:
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agents = await agent_manager.get_agents_info()
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if agents:
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default_agent_id = agents[0].get("id", "")
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return {"default_agent_id": default_agent_id}
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except Exception as e:
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logger.error(f"获取默认智能体出错: {e}")
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raise HTTPException(status_code=500, detail=f"获取默认智能体出错: {str(e)}")
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@chat.post("/set_default_agent")
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async def set_default_agent(request_data: dict = Body(...), current_user=Depends(get_admin_user)):
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"""设置默认智能体ID (仅管理员)"""
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try:
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agent_id = request_data.get("agent_id")
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if not agent_id:
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raise HTTPException(status_code=422, detail="缺少必需的 agent_id 字段")
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# 验证智能体是否存在
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agents = await agent_manager.get_agents_info()
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agent_ids = [agent.get("id", "") for agent in agents]
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if agent_id not in agent_ids:
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raise HTTPException(status_code=404, detail=f"智能体 {agent_id} 不存在")
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# 设置默认智能体ID
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config.default_agent_id = agent_id
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# 保存配置
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config.save()
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return {"success": True, "default_agent_id": agent_id}
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except HTTPException as he:
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raise he
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except Exception as e:
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logger.error(f"设置默认智能体出错: {e}")
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raise HTTPException(status_code=500, detail=f"设置默认智能体出错: {str(e)}")
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# =============================================================================
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# > === 对话分组 ===
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# =============================================================================
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@chat.post("/call")
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async def call(query: str = Body(...), meta: dict = Body(None), current_user: User = Depends(get_required_user)):
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"""调用模型进行简单问答（需要登录）"""
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meta = meta or {}
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model = select_model(model_provider=meta.get("model_provider"), model_name=meta.get("model_name"))
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async def predict_async(query):
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loop = asyncio.get_event_loop()
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return await loop.run_in_executor(executor, model.predict, query)
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response = await predict_async(query)
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logger.debug({"query": query, "response": response.content})
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return {"response": response.content}
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@chat.get("/agent")
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async def get_agent(current_user: User = Depends(get_required_user)):
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"""获取所有可用智能体（需要登录）"""
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agents = await agent_manager.get_agents_info()
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# logger.debug(f"agents: {agents}")
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metadata = {}
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if Path("src/static/agents_meta.yaml").exists():
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with open("src/static/agents_meta.yaml") as f:
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metadata = yaml.safe_load(f)
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return {"agents": agents, "metadata": metadata}
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@chat.post("/agent/{agent_id}")
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async def chat_agent(
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agent_id: str,
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query: str = Body(...),
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config: dict = Body({}),
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meta: dict = Body({}),
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current_user: User = Depends(get_required_user),
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):
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"""使用特定智能体进行对话（需要登录）"""
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logger.info(f"agent_id: {agent_id}, query: {query}, config: {config}, meta: {meta}")
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meta.update(
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{
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"query": query,
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"agent_id": agent_id,
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"server_model_name": config.get("model", agent_id),
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"thread_id": config.get("thread_id"),
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"user_id": current_user.id,
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}
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)
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# 将meta和thread_id整合到config中
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def make_chunk(content=None, **kwargs):
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return (
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json.dumps(
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{"request_id": meta.get("request_id"), "response": content, **kwargs}, ensure_ascii=False
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).encode("utf-8")
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+ b"\n"
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)
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async def stream_messages():
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# 代表服务端已经收到了请求
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yield make_chunk(status="init", meta=meta, msg=HumanMessage(content=query).model_dump())
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try:
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agent = agent_manager.get_agent(agent_id)
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except Exception as e:
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logger.error(f"Error getting agent {agent_id}: {e}, {traceback.format_exc()}")
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yield make_chunk(message=f"Error getting agent {agent_id}: {e}", status="error")
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return
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messages = [{"role": "user", "content": query}]
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# 构造运行时配置，如果没有thread_id则生成一个
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user_id = str(current_user.id)
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thread_id = config.get("thread_id")
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input_context = {"user_id": user_id, "thread_id": thread_id}
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try:
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async for msg, metadata in agent.stream_messages(messages, input_context=input_context):
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# logger.debug(f"msg: {msg.model_dump()}, metadata: {metadata}")
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if isinstance(msg, AIMessageChunk):
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yield make_chunk(content=msg.content, msg=msg.model_dump(), metadata=metadata, status="loading")
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else:
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yield make_chunk(msg=msg.model_dump(), metadata=metadata, status="loading")
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yield make_chunk(status="finished", meta=meta)
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except Exception as e:
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logger.error(f"Error streaming messages: {e}, {traceback.format_exc()}")
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yield make_chunk(message=f"Error streaming messages: {e}", status="error")
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return StreamingResponse(stream_messages(), media_type="application/json")
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# =============================================================================
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# > === 模型管理分组 ===
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# =============================================================================
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@chat.get("/models")
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async def get_chat_models(model_provider: str, current_user: User = Depends(get_admin_user)):
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"""获取指定模型提供商的模型列表（需要登录）"""
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model = select_model(model_provider=model_provider)
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return {"models": model.get_models()}
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@chat.post("/models/update")
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async def update_chat_models(model_provider: str, model_names: list[str], current_user=Depends(get_admin_user)):
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"""更新指定模型提供商的模型列表 (仅管理员)"""
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config.model_names[model_provider]["models"] = model_names
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config._save_models_to_file()
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return {"models": config.model_names[model_provider]["models"]}
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@chat.get("/tools")
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async def get_tools(agent_id: str, current_user: User = Depends(get_required_user)):
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"""获取所有可用工具（需要登录）"""
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# 获取Agent实例和配置类
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if not (agent := agent_manager.get_agent(agent_id)):
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raise HTTPException(status_code=404, detail=f"智能体 {agent_id} 不存在")
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if hasattr(agent, "get_tools"):
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tools = agent.get_tools()
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else:
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tools = get_buildin_tools()
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tools_info = gen_tool_info(tools)
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return {"tools": {tool["id"]: tool for tool in tools_info}}
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@chat.post("/agent/{agent_id}/config")
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async def save_agent_config(agent_id: str, config: dict = Body(...), current_user: User = Depends(get_required_user)):
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"""保存智能体配置到YAML文件（需要登录）"""
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try:
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# 获取Agent实例和配置类
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if not (agent := agent_manager.get_agent(agent_id)):
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raise HTTPException(status_code=404, detail=f"智能体 {agent_id} 不存在")
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# 使用配置类的save_to_file方法保存配置
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result = agent.context_schema.save_to_file(config, agent.module_name)
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if result:
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return {"success": True, "message": f"智能体 {agent.name} 配置已保存"}
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else:
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raise HTTPException(status_code=500, detail="保存智能体配置失败")
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except Exception as e:
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logger.error(f"保存智能体配置出错: {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=500, detail=f"保存智能体配置出错: {str(e)}")
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@chat.get("/agent/{agent_id}/history")
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async def get_agent_history(agent_id: str, thread_id: str, current_user: User = Depends(get_required_user)):
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"""获取智能体历史消息（需要登录）"""
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try:
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# 获取Agent实例和配置类
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if not (agent := agent_manager.get_agent(agent_id)):
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raise HTTPException(status_code=404, detail=f"智能体 {agent_id} 不存在")
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# 获取历史消息
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history = await agent.get_history(user_id=str(current_user.id), thread_id=thread_id)
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return {"history": history}
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except Exception as e:
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logger.error(f"获取智能体历史消息出错: {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=500, detail=f"获取智能体历史消息出错: {str(e)}")
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@chat.get("/agent/{agent_id}/config")
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async def get_agent_config(agent_id: str, current_user: User = Depends(get_required_user)):
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"""从YAML文件加载智能体配置（需要登录）"""
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try:
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# 检查智能体是否存在
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if not (agent := agent_manager.get_agent(agent_id)):
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raise HTTPException(status_code=404, detail=f"智能体 {agent_id} 不存在")
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config = await agent.get_config()
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logger.debug(f"config: {config}, ContextClass: {agent.context_schema=}")
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return {"success": True, "config": config}
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except Exception as e:
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logger.error(f"加载智能体配置出错: {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=500, detail=f"加载智能体配置出错: {str(e)}")
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# ==================== 线程管理 API ====================
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class ThreadCreate(BaseModel):
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title: str | None = None
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agent_id: str
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description: str | None = None
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metadata: dict | None = None
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class ThreadResponse(BaseModel):
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id: str
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user_id: str
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agent_id: str
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title: str | None = None
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description: str | None = None
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create_at: str
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update_at: str
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# =============================================================================
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# > === 会话管理分组 ===
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# =============================================================================
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@chat.post("/thread", response_model=ThreadResponse)
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async def create_thread(
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thread: ThreadCreate, db: Session = Depends(get_db), current_user: User = Depends(get_required_user)
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):
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"""创建新对话线程"""
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thread_id = str(uuid.uuid4())
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logger.debug(f"thread.agent_id: {thread.agent_id}")
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new_thread = Thread(
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id=thread_id,
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user_id=str(current_user.id),
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agent_id=thread.agent_id,
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title=thread.title or "新的对话",
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description=thread.description,
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)
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db.add(new_thread)
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db.commit()
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db.refresh(new_thread)
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return {
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"id": new_thread.id,
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"user_id": new_thread.user_id,
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"agent_id": new_thread.agent_id,
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"title": new_thread.title,
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"description": new_thread.description,
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"create_at": new_thread.create_at.isoformat(),
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"update_at": new_thread.update_at.isoformat(),
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}
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@chat.get("/threads", response_model=list[ThreadResponse])
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async def list_threads(agent_id: str, db: Session = Depends(get_db), current_user: User = Depends(get_required_user)):
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"""获取用户的所有对话线程"""
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assert agent_id, "agent_id 不能为空"
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query = db.query(Thread).filter(
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Thread.user_id == str(current_user.id),
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Thread.status == 1,
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Thread.agent_id == agent_id,
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)
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logger.debug(f"agent_id: {agent_id}")
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threads = query.order_by(Thread.update_at.desc()).all()
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return [
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{
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"id": thread.id,
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"user_id": thread.user_id,
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"agent_id": thread.agent_id,
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"title": thread.title,
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"description": thread.description,
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"create_at": thread.create_at.isoformat(),
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"update_at": thread.update_at.isoformat(),
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}
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for thread in threads
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]
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@chat.delete("/thread/{thread_id}")
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async def delete_thread(thread_id: str, db: Session = Depends(get_db), current_user: User = Depends(get_required_user)):
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"""删除对话线程"""
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thread = db.query(Thread).filter(Thread.id == thread_id, Thread.user_id == str(current_user.id)).first()
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if not thread:
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raise HTTPException(status_code=404, detail="对话线程不存在")
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# 软删除
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thread.status = 0
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db.commit()
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return {"message": "删除成功"}
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class ThreadUpdate(BaseModel):
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title: str | None = None
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description: str | None = None
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@chat.put("/thread/{thread_id}", response_model=ThreadResponse)
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async def update_thread(
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thread_id: str,
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thread_update: ThreadUpdate,
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db: Session = Depends(get_db),
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current_user: User = Depends(get_required_user),
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):
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"""更新对话线程信息"""
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thread = (
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db.query(Thread)
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.filter(Thread.id == thread_id, Thread.user_id == str(current_user.id), Thread.status == 1)
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.first()
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)
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if not thread:
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raise HTTPException(status_code=404, detail="对话线程不存在")
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if thread_update.title is not None:
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thread.title = thread_update.title
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if thread_update.description is not None:
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thread.description = thread_update.description
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db.commit()
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db.refresh(thread)
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return {
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"id": thread.id,
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"user_id": thread.user_id,
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"agent_id": thread.agent_id,
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"title": thread.title,
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"description": thread.description,
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"create_at": thread.create_at.isoformat(),
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"update_at": thread.update_at.isoformat(),
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}
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