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huangjianwuandClaude Opus 4.6
2f2eb646a4
后端： - /chat/index 改为 BackgroundTasks 异步执行，立即返回 - /chat/status 返回细粒度状态（idle/indexing/indexed/failed） - 内存追踪索引进度，避免重复触发 前端： - ChatPanel 每 2 秒轮询索引状态，索引完成后自动停止 - 索引中显示"正在索引笔记内容..."及首次下载模型提示 - 索引失败显示重试按钮 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
102 lines
3.1 KiB
Python
102 lines
3.1 KiB
Python
from fastapi import APIRouter, BackgroundTasks
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from pydantic import BaseModel
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from app.services.chat_service import chat as chat_service
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from app.services.vector_store import VectorStoreManager
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from app.utils.logger import get_logger
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from app.utils.response import ResponseWrapper as R
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logger = get_logger(__name__)
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router = APIRouter()
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# 索引状态追踪: task_id -> "indexing" | "indexed" | "failed"
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_index_status: dict[str, str] = {}
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class IndexRequest(BaseModel):
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task_id: str
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class ChatMessage(BaseModel):
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role: str
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content: str
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class AskRequest(BaseModel):
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task_id: str
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question: str
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history: list[ChatMessage] = []
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provider_id: str
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model_name: str
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def _do_index(task_id: str):
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"""后台执行索引任务。"""
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try:
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_index_status[task_id] = "indexing"
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store = VectorStoreManager()
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store.index_task(task_id)
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_index_status[task_id] = "indexed"
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logger.info(f"索引完成: {task_id}")
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except Exception as e:
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_index_status[task_id] = "failed"
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logger.error(f"索引失败: {task_id}, {e}")
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@router.post("/chat/index")
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def index_task(data: IndexRequest, background_tasks: BackgroundTasks):
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"""触发后台索引，立即返回。"""
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if _index_status.get(data.task_id) == "indexing":
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return R.success(msg="正在索引中")
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# 如果已经索引过，直接返回
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store = VectorStoreManager()
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if store.is_indexed(data.task_id):
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_index_status[data.task_id] = "indexed"
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return R.success(msg="已完成索引")
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_index_status[data.task_id] = "indexing"
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background_tasks.add_task(_do_index, data.task_id)
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return R.success(msg="开始索引")
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@router.get("/chat/status")
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def chat_status(task_id: str):
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"""返回索引状态：idle / indexing / indexed / failed。"""
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try:
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# 优先检查内存状态
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status = _index_status.get(task_id)
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if status:
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return R.success(data={"status": status, "indexed": status == "indexed"})
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# 内存没有记录，检查持久化
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store = VectorStoreManager()
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indexed = store.is_indexed(task_id)
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if indexed:
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_index_status[task_id] = "indexed"
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return R.success(data={"status": "indexed" if indexed else "idle", "indexed": indexed})
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except Exception as e:
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logger.error(f"查询索引状态失败: {e}")
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return R.success(data={"status": "idle", "indexed": False})
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@router.post("/chat/ask")
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def ask_question(data: AskRequest):
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"""基于笔记内容的 RAG 问答。"""
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try:
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history = [{"role": m.role, "content": m.content} for m in data.history]
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result = chat_service(
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task_id=data.task_id,
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question=data.question,
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history=history,
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provider_id=data.provider_id,
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model_name=data.model_name,
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)
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return R.success(data=result)
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except ValueError as e:
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return R.error(msg=str(e))
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except Exception as e:
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logger.error(f"Chat 问答失败: {e}", exc_info=True)
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return R.error(msg=f"问答失败: {str(e)}")
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