678 lines
28 KiB
Python
678 lines
28 KiB
Python
import asyncio
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import os
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import traceback
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from urllib.parse import quote, unquote
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from fastapi import APIRouter, Body, Depends, File, HTTPException, Query, Request, UploadFile
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from fastapi.responses import FileResponse
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from starlette.responses import FileResponse as StarletteFileResponse
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from src.storage.db.models import User
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from server.utils.auth_middleware import get_admin_user
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from server.services.tasker import TaskContext, tasker
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from src import config, knowledge_base
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from src.knowledge.indexing import SUPPORTED_FILE_EXTENSIONS, is_supported_file_extension, process_file_to_markdown
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from src.knowledge.utils import calculate_content_hash
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from src.models.embed import test_embedding_model_status, test_all_embedding_models_status
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from src.utils import hashstr, logger
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knowledge = APIRouter(prefix="/knowledge", tags=["knowledge"])
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# =============================================================================
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# === 数据库管理分组 ===
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# =============================================================================
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@knowledge.get("/databases")
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async def get_databases(current_user: User = Depends(get_admin_user)):
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"""获取所有知识库"""
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try:
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database = knowledge_base.get_databases()
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return database
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except Exception as e:
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logger.error(f"获取数据库列表失败 {e}, {traceback.format_exc()}")
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return {"message": f"获取数据库列表失败 {e}", "databases": []}
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@knowledge.post("/databases")
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async def create_database(
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database_name: str = Body(...),
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description: str = Body(...),
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embed_model_name: str = Body(...),
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kb_type: str = Body("lightrag"),
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additional_params: dict = Body({}),
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llm_info: dict = Body(None),
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current_user: User = Depends(get_admin_user),
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):
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"""创建知识库"""
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logger.debug(
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f"Create database {database_name} with kb_type {kb_type}, "
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f"additional_params {additional_params}, llm_info {llm_info}"
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)
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try:
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embed_info = config.embed_model_names[embed_model_name]
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database_info = await knowledge_base.create_database(
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database_name, description, kb_type=kb_type, embed_info=embed_info, llm_info=llm_info, **additional_params
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)
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# 需要重新加载所有智能体，因为工具刷新了
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from src.agents import agent_manager
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await agent_manager.reload_all()
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return database_info
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except Exception as e:
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logger.error(f"创建数据库失败 {e}, {traceback.format_exc()}")
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return {"message": f"创建数据库失败 {e}", "status": "failed"}
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@knowledge.get("/databases/{db_id}")
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async def get_database_info(db_id: str, current_user: User = Depends(get_admin_user)):
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"""获取知识库详细信息"""
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database = knowledge_base.get_database_info(db_id)
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if database is None:
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raise HTTPException(status_code=404, detail="Database not found")
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return database
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@knowledge.put("/databases/{db_id}")
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async def update_database_info(
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db_id: str, name: str = Body(...), description: str = Body(...), current_user: User = Depends(get_admin_user)
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):
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"""更新知识库信息"""
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logger.debug(f"Update database {db_id} info: {name}, {description}")
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try:
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database = await knowledge_base.update_database(db_id, name, description)
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return {"message": "更新成功", "database": database}
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except Exception as e:
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logger.error(f"更新数据库失败 {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=400, detail=f"更新数据库失败: {e}")
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@knowledge.delete("/databases/{db_id}")
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async def delete_database(db_id: str, current_user: User = Depends(get_admin_user)):
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"""删除知识库"""
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logger.debug(f"Delete database {db_id}")
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try:
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await knowledge_base.delete_database(db_id)
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# 需要重新加载所有智能体，因为工具刷新了
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from src.agents import agent_manager
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await agent_manager.reload_all()
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return {"message": "删除成功"}
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except Exception as e:
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logger.error(f"删除数据库失败 {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=400, detail=f"删除数据库失败: {e}")
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@knowledge.get("/databases/{db_id}/export")
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async def export_database(
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db_id: str,
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format: str = Query("csv", enum=["csv", "xlsx", "md", "txt"]),
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include_vectors: bool = Query(False, description="是否在导出中包含向量数据"),
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current_user: User = Depends(get_admin_user),
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):
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"""导出知识库数据"""
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logger.debug(f"Exporting database {db_id} with format {format}")
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try:
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file_path = await knowledge_base.export_data(db_id, format=format, include_vectors=include_vectors)
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if not os.path.exists(file_path):
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raise HTTPException(status_code=404, detail="Exported file not found.")
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media_types = {
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"csv": "text/csv",
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"xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
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"md": "text/markdown",
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"txt": "text/plain",
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}
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media_type = media_types.get(format, "application/octet-stream")
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return FileResponse(path=file_path, filename=os.path.basename(file_path), media_type=media_type)
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except NotImplementedError as e:
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logger.warning(f"A disabled feature was accessed: {e}")
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raise HTTPException(status_code=501, detail=str(e))
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except Exception as e:
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logger.error(f"导出数据库失败 {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=500, detail=f"导出数据库失败: {e}")
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# =============================================================================
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# === 文档管理分组 ===
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# =============================================================================
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@knowledge.post("/databases/{db_id}/documents")
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async def add_documents(
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db_id: str, items: list[str] = Body(...), params: dict = Body(...), current_user: User = Depends(get_admin_user)
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):
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"""添加文档到知识库"""
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logger.debug(f"Add documents for db_id {db_id}: {items} {params=}")
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content_type = params.get("content_type", "file")
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# 安全检查：验证文件路径
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if content_type == "file":
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from src.knowledge.utils.kb_utils import validate_file_path
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for item in items:
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try:
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validate_file_path(item, db_id)
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except ValueError as e:
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raise HTTPException(status_code=403, detail=str(e))
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async def run_ingest(context: TaskContext):
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await context.set_message("任务初始化")
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await context.set_progress(5.0, "准备处理文档")
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total = len(items)
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processed_items = []
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try:
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# 逐个处理文档并更新进度
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for idx, item in enumerate(items, 1):
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await context.raise_if_cancelled()
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# 更新进度
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progress = 5.0 + (idx / total) * 90.0 # 5% ~ 95%
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await context.set_progress(progress, f"正在处理第 {idx}/{total} 个文档")
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# 处理单个文档
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result = await knowledge_base.add_content(db_id, [item], params=params)
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processed_items.extend(result)
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except asyncio.CancelledError:
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await context.set_progress(100.0, "任务已取消")
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raise
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item_type = "URL" if content_type == "url" else "文件"
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failed_count = len([_p for _p in processed_items if _p.get("status") == "failed"])
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summary = {
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"db_id": db_id,
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"item_type": item_type,
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"submitted": len(processed_items),
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"failed": failed_count,
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}
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message = f"{item_type}处理完成，失败 {failed_count} 个" if failed_count else f"{item_type}处理完成"
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await context.set_result(summary | {"items": processed_items})
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await context.set_progress(100.0, message)
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return summary | {"items": processed_items}
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try:
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task = await tasker.enqueue(
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name=f"知识库文档处理({db_id})",
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task_type="knowledge_ingest",
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payload={
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"db_id": db_id,
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"items": items,
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"params": params,
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"content_type": content_type,
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},
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coroutine=run_ingest,
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)
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return {
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"message": "任务已提交，请在任务中心查看进度",
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"status": "queued",
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"task_id": task.id,
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}
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except Exception as e: # noqa: BLE001
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logger.error(f"Failed to enqueue {content_type}s: {e}, {traceback.format_exc()}")
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return {"message": f"Failed to enqueue task: {e}", "status": "failed"}
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@knowledge.get("/databases/{db_id}/documents/{doc_id}")
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async def get_document_info(db_id: str, doc_id: str, current_user: User = Depends(get_admin_user)):
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"""获取文档详细信息（包含基本信息和内容信息）"""
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logger.debug(f"GET document {doc_id} info in {db_id}")
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try:
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info = await knowledge_base.get_file_info(db_id, doc_id)
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return info
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except Exception as e:
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logger.error(f"Failed to get file info, {e}, {db_id=}, {doc_id=}, {traceback.format_exc()}")
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return {"message": "Failed to get file info", "status": "failed"}
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@knowledge.get("/databases/{db_id}/documents/{doc_id}/basic")
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async def get_document_basic_info(db_id: str, doc_id: str, current_user: User = Depends(get_admin_user)):
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"""获取文档基本信息（仅元数据）"""
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logger.debug(f"GET document {doc_id} basic info in {db_id}")
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try:
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info = await knowledge_base.get_file_basic_info(db_id, doc_id)
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return info
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except Exception as e:
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logger.error(f"Failed to get file basic info, {e}, {db_id=}, {doc_id=}, {traceback.format_exc()}")
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return {"message": "Failed to get file basic info", "status": "failed"}
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@knowledge.get("/databases/{db_id}/documents/{doc_id}/content")
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async def get_document_content(db_id: str, doc_id: str, current_user: User = Depends(get_admin_user)):
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"""获取文档内容信息（chunks和lines）"""
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logger.debug(f"GET document {doc_id} content in {db_id}")
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try:
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info = await knowledge_base.get_file_content(db_id, doc_id)
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return info
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except Exception as e:
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logger.error(f"Failed to get file content, {e}, {db_id=}, {doc_id=}, {traceback.format_exc()}")
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return {"message": "Failed to get file content", "status": "failed"}
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@knowledge.delete("/databases/{db_id}/documents/{doc_id}")
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async def delete_document(db_id: str, doc_id: str, current_user: User = Depends(get_admin_user)):
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"""删除文档"""
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logger.debug(f"DELETE document {doc_id} info in {db_id}")
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try:
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await knowledge_base.delete_file(db_id, doc_id)
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return {"message": "删除成功"}
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except Exception as e:
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logger.error(f"删除文档失败 {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=400, detail=f"删除文档失败: {e}")
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@knowledge.get("/databases/{db_id}/documents/{doc_id}/download")
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async def download_document(db_id: str, doc_id: str, request: Request, current_user: User = Depends(get_admin_user)):
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"""下载原始文件"""
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logger.debug(f"Download document {doc_id} from {db_id}")
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try:
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file_info = await knowledge_base.get_file_basic_info(db_id, doc_id)
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if not file_info:
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raise HTTPException(status_code=404, detail="File not found")
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file_path = file_info.get("meta", {}).get("path")
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if not file_path:
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raise HTTPException(status_code=404, detail="File path not found in metadata")
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# 安全检查：验证文件路径
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from src.knowledge.utils.kb_utils import validate_file_path
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try:
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normalized_path = validate_file_path(file_path, db_id)
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except ValueError as e:
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raise HTTPException(status_code=403, detail=str(e))
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if not os.path.exists(normalized_path):
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raise HTTPException(status_code=404, detail=f"File not found on disk: {file_info=}")
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# 获取文件扩展名和MIME类型，解码URL编码的文件名
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filename = file_info.get("meta", {}).get("filename", "file")
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logger.debug(f"Original filename from database: {filename}")
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# 解码URL编码的文件名（如果有的话）
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try:
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decoded_filename = unquote(filename, encoding="utf-8")
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logger.debug(f"Decoded filename: {decoded_filename}")
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except Exception as e:
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logger.debug(f"Failed to decode filename {filename}: {e}")
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decoded_filename = filename # 如果解码失败，使用原文件名
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_, ext = os.path.splitext(decoded_filename)
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media_types = {
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".pdf": "application/pdf",
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".docx": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
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".doc": "application/msword",
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".txt": "text/plain",
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".md": "text/markdown",
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".json": "application/json",
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".csv": "text/csv",
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".xlsx": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
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".xls": "application/vnd.ms-excel",
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".pptx": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
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".ppt": "application/vnd.ms-powerpoint",
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".jpg": "image/jpeg",
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".jpeg": "image/jpeg",
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".png": "image/png",
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".gif": "image/gif",
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".bmp": "image/bmp",
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".svg": "image/svg+xml",
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".zip": "application/zip",
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".rar": "application/x-rar-compressed",
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".7z": "application/x-7z-compressed",
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".tar": "application/x-tar",
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".gz": "application/gzip",
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".html": "text/html",
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".htm": "text/html",
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".xml": "text/xml",
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".css": "text/css",
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".js": "application/javascript",
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".py": "text/x-python",
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".java": "text/x-java-source",
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".cpp": "text/x-c++src",
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".c": "text/x-csrc",
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".h": "text/x-chdr",
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".hpp": "text/x-c++hdr",
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}
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media_type = media_types.get(ext.lower(), "application/octet-stream")
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# 创建自定义FileResponse，避免文件名编码问题
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response = StarletteFileResponse(path=normalized_path, media_type=media_type)
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# 正确处理中文文件名的HTTP头部设置
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# HTTP头部只能包含ASCII字符，所以需要对中文文件名进行编码
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try:
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# 尝试使用ASCII编码（适用于英文文件名）
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decoded_filename.encode("ascii")
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# 如果成功，直接使用简单格式
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response.headers["Content-Disposition"] = f'attachment; filename="{decoded_filename}"'
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except UnicodeEncodeError:
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# 如果包含非ASCII字符（如中文），使用RFC 2231格式
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encoded_filename = quote(decoded_filename.encode("utf-8"))
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response.headers["Content-Disposition"] = f"attachment; filename*=UTF-8''{encoded_filename}"
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return response
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except HTTPException:
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raise
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except Exception as e:
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logger.error(f"下载文件失败: {e}, {traceback.format_exc()}")
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raise HTTPException(status_code=500, detail=f"下载失败: {e}")
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# =============================================================================
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# === 查询分组 ===
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# =============================================================================
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@knowledge.post("/databases/{db_id}/query")
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async def query_knowledge_base(
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db_id: str, query: str = Body(...), meta: dict = Body(...), current_user: User = Depends(get_admin_user)
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):
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"""查询知识库"""
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logger.debug(f"Query knowledge base {db_id}: {query}")
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try:
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result = await knowledge_base.aquery(query, db_id=db_id, **meta)
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return {"result": result, "status": "success"}
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except Exception as e:
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logger.error(f"知识库查询失败 {e}, {traceback.format_exc()}")
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return {"message": f"知识库查询失败: {e}", "status": "failed"}
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@knowledge.post("/databases/{db_id}/query-test")
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async def query_test(
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db_id: str, query: str = Body(...), meta: dict = Body(...), current_user: User = Depends(get_admin_user)
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):
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"""测试查询知识库"""
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logger.debug(f"Query test in {db_id}: {query}")
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try:
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result = await knowledge_base.aquery(query, db_id=db_id, **meta)
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return result
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except Exception as e:
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logger.error(f"测试查询失败 {e}, {traceback.format_exc()}")
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return {"message": f"测试查询失败: {e}", "status": "failed"}
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@knowledge.get("/databases/{db_id}/query-params")
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async def get_knowledge_base_query_params(db_id: str, current_user: User = Depends(get_admin_user)):
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"""获取知识库类型特定的查询参数"""
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try:
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# 获取数据库信息
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db_info = knowledge_base.get_database_info(db_id)
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if not db_info:
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raise HTTPException(status_code=404, detail="Database not found")
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kb_type = db_info.get("kb_type", "lightrag")
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# 根据知识库类型返回不同的查询参数
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if kb_type == "lightrag":
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params = {
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"type": "lightrag",
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"options": [
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{
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"key": "mode",
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"label": "检索模式",
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"type": "select",
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"default": "mix",
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"options": [
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{"value": "local", "label": "Local", "description": "上下文相关信息"},
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||
{"value": "global", "label": "Global", "description": "全局知识"},
|
||
{"value": "hybrid", "label": "Hybrid", "description": "本地和全局混合"},
|
||
{"value": "naive", "label": "Naive", "description": "基本搜索"},
|
||
{"value": "mix", "label": "Mix", "description": "知识图谱和向量检索混合"},
|
||
],
|
||
},
|
||
{
|
||
"key": "only_need_context",
|
||
"label": "只使用上下文",
|
||
"type": "boolean",
|
||
"default": True,
|
||
"description": "只返回上下文，不生成回答",
|
||
},
|
||
{
|
||
"key": "only_need_prompt",
|
||
"label": "只使用提示",
|
||
"type": "boolean",
|
||
"default": False,
|
||
"description": "只返回提示，不进行检索",
|
||
},
|
||
{
|
||
"key": "top_k",
|
||
"label": "TopK",
|
||
"type": "number",
|
||
"default": 10,
|
||
"min": 1,
|
||
"max": 100,
|
||
"description": "返回的最大结果数量",
|
||
},
|
||
],
|
||
}
|
||
elif kb_type == "chroma":
|
||
params = {
|
||
"type": "chroma",
|
||
"options": [
|
||
{
|
||
"key": "top_k",
|
||
"label": "TopK",
|
||
"type": "number",
|
||
"default": 10,
|
||
"min": 1,
|
||
"max": 100,
|
||
"description": "返回的最大结果数量",
|
||
},
|
||
{
|
||
"key": "similarity_threshold",
|
||
"label": "相似度阈值",
|
||
"type": "number",
|
||
"default": 0.0,
|
||
"min": 0.0,
|
||
"max": 1.0,
|
||
"step": 0.1,
|
||
"description": "过滤相似度低于此值的结果",
|
||
},
|
||
{
|
||
"key": "include_distances",
|
||
"label": "显示相似度",
|
||
"type": "boolean",
|
||
"default": True,
|
||
"description": "在结果中显示相似度分数",
|
||
},
|
||
],
|
||
}
|
||
elif kb_type == "milvus":
|
||
params = {
|
||
"type": "milvus",
|
||
"options": [
|
||
{
|
||
"key": "top_k",
|
||
"label": "TopK",
|
||
"type": "number",
|
||
"default": 10,
|
||
"min": 1,
|
||
"max": 100,
|
||
"description": "返回的最大结果数量",
|
||
},
|
||
{
|
||
"key": "similarity_threshold",
|
||
"label": "相似度阈值",
|
||
"type": "number",
|
||
"default": 0.0,
|
||
"min": 0.0,
|
||
"max": 1.0,
|
||
"step": 0.1,
|
||
"description": "过滤相似度低于此值的结果",
|
||
},
|
||
{
|
||
"key": "include_distances",
|
||
"label": "显示相似度",
|
||
"type": "boolean",
|
||
"default": True,
|
||
"description": "在结果中显示相似度分数",
|
||
},
|
||
{
|
||
"key": "metric_type",
|
||
"label": "距离度量类型",
|
||
"type": "select",
|
||
"default": "COSINE",
|
||
"options": [
|
||
{"value": "COSINE", "label": "余弦相似度", "description": "适合文本语义相似度"},
|
||
{"value": "L2", "label": "欧几里得距离", "description": "适合数值型数据"},
|
||
{"value": "IP", "label": "内积", "description": "适合标准化向量"},
|
||
],
|
||
"description": "向量相似度计算方法",
|
||
},
|
||
],
|
||
}
|
||
else:
|
||
# 未知类型，返回基本参数
|
||
params = {
|
||
"type": "unknown",
|
||
"options": [
|
||
{
|
||
"key": "top_k",
|
||
"label": "TopK",
|
||
"type": "number",
|
||
"default": 10,
|
||
"min": 1,
|
||
"max": 100,
|
||
"description": "返回的最大结果数量",
|
||
}
|
||
],
|
||
}
|
||
|
||
return {"params": params, "message": "success"}
|
||
|
||
except Exception as e:
|
||
logger.error(f"获取知识库查询参数失败 {e}, {traceback.format_exc()}")
|
||
return {"message": f"获取知识库查询参数失败 {e}", "params": {}}
|
||
|
||
|
||
# =============================================================================
|
||
# === 文件管理分组 ===
|
||
# =============================================================================
|
||
|
||
|
||
@knowledge.post("/files/upload")
|
||
async def upload_file(
|
||
file: UploadFile = File(...), db_id: str | None = Query(None), current_user: User = Depends(get_admin_user)
|
||
):
|
||
"""上传文件"""
|
||
if not file.filename:
|
||
raise HTTPException(status_code=400, detail="No selected file")
|
||
|
||
logger.debug(f"Received upload file with filename: {file.filename}")
|
||
|
||
if not is_supported_file_extension(file.filename):
|
||
ext = os.path.splitext(file.filename)[1].lower()
|
||
raise HTTPException(status_code=400, detail=f"Unsupported file type: {ext}")
|
||
|
||
# 根据db_id获取上传路径，如果db_id为None则使用默认路径
|
||
if db_id:
|
||
upload_dir = knowledge_base.get_db_upload_path(db_id)
|
||
else:
|
||
upload_dir = os.path.join(config.save_dir, "database", "uploads")
|
||
|
||
basename, ext = os.path.splitext(file.filename)
|
||
filename = f"{basename}_{hashstr(basename, 4, with_salt=True)}{ext}".lower()
|
||
file_path = os.path.join(upload_dir, filename)
|
||
os.makedirs(upload_dir, exist_ok=True)
|
||
|
||
file_bytes = await file.read()
|
||
|
||
content_hash = calculate_content_hash(file_bytes)
|
||
if knowledge_base.file_existed_in_db(db_id, content_hash):
|
||
raise HTTPException(status_code=409, detail="数据库中已经存在了相同文件，File with the same content already exists in this database")
|
||
|
||
with open(file_path, "wb") as buffer:
|
||
buffer.write(file_bytes)
|
||
|
||
return {"message": "File successfully uploaded", "file_path": file_path, "db_id": db_id, "content_hash": content_hash}
|
||
|
||
|
||
@knowledge.get("/files/supported-types")
|
||
async def get_supported_file_types(current_user: User = Depends(get_admin_user)):
|
||
"""获取当前支持的文件类型"""
|
||
return {"message": "success", "file_types": sorted(SUPPORTED_FILE_EXTENSIONS)}
|
||
|
||
|
||
@knowledge.post("/files/markdown")
|
||
async def mark_it_down(file: UploadFile = File(...), current_user: User = Depends(get_admin_user)):
|
||
"""调用 src.knowledge.indexing 下面的 process_file_to_markdown 解析为 markdown，参数是文件，需要管理员权限"""
|
||
try:
|
||
content = await file.read()
|
||
markdown_content = await process_file_to_markdown(content)
|
||
return {"markdown_content": markdown_content, "message": "success"}
|
||
except Exception as e:
|
||
logger.error(f"文件解析失败 {e}, {traceback.format_exc()}")
|
||
return {"message": f"文件解析失败 {e}", "markdown_content": ""}
|
||
|
||
|
||
# =============================================================================
|
||
# === 知识库类型分组 ===
|
||
# =============================================================================
|
||
|
||
|
||
@knowledge.get("/types")
|
||
async def get_knowledge_base_types(current_user: User = Depends(get_admin_user)):
|
||
"""获取支持的知识库类型"""
|
||
try:
|
||
kb_types = knowledge_base.get_supported_kb_types()
|
||
return {"kb_types": kb_types, "message": "success"}
|
||
except Exception as e:
|
||
logger.error(f"获取知识库类型失败 {e}, {traceback.format_exc()}")
|
||
return {"message": f"获取知识库类型失败 {e}", "kb_types": {}}
|
||
|
||
|
||
@knowledge.get("/stats")
|
||
async def get_knowledge_base_statistics(current_user: User = Depends(get_admin_user)):
|
||
"""获取知识库统计信息"""
|
||
try:
|
||
stats = knowledge_base.get_statistics()
|
||
return {"stats": stats, "message": "success"}
|
||
except Exception as e:
|
||
logger.error(f"获取知识库统计失败 {e}, {traceback.format_exc()}")
|
||
return {"message": f"获取知识库统计失败 {e}", "stats": {}}
|
||
|
||
|
||
# =============================================================================
|
||
# === Embedding模型状态检查分组 ===
|
||
# =============================================================================
|
||
|
||
|
||
@knowledge.get("/embedding-models/{model_id}/status")
|
||
async def get_embedding_model_status(model_id: str, current_user: User = Depends(get_admin_user)):
|
||
"""获取指定embedding模型的状态"""
|
||
logger.debug(f"Checking embedding model status: {model_id}")
|
||
try:
|
||
status = await test_embedding_model_status(model_id)
|
||
return {"status": status, "message": "success"}
|
||
except Exception as e:
|
||
logger.error(f"获取embedding模型状态失败 {model_id}: {e}, {traceback.format_exc()}")
|
||
return {
|
||
"message": f"获取embedding模型状态失败: {e}",
|
||
"status": {"model_id": model_id, "status": "error", "message": str(e)},
|
||
}
|
||
|
||
|
||
@knowledge.get("/embedding-models/status")
|
||
async def get_all_embedding_models_status(current_user: User = Depends(get_admin_user)):
|
||
"""获取所有embedding模型的状态"""
|
||
logger.debug("Checking all embedding models status")
|
||
try:
|
||
status = await test_all_embedding_models_status()
|
||
return {"status": status, "message": "success"}
|
||
except Exception as e:
|
||
logger.error(f"获取所有embedding模型状态失败: {e}, {traceback.format_exc()}")
|
||
return {"message": f"获取所有embedding模型状态失败: {e}", "status": {"models": {}, "total": 0, "available": 0}}
|