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update requirements.txt and kb_doc_api.py

This commit is contained in:
imClumsyPanda 2023-08-04 15:12:14 +08:00
parent 3318cef751
commit 7bfbe18011
3 changed files with 37 additions and 36 deletions
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2
requirements.txt
View File

@ -14,7 +14,7 @@ uvicorn~=0.23.1
starlette~=0.27.0
numpy~=1.24.4
pydantic~=1.10.11
unstructured[local-inference]
unstructured[all-docs]
streamlit>=1.25.0
streamlit-option-menu

52
server/knowledge_base/kb_doc_api.py
View File

@ -1,14 +1,11 @@
import os
import urllib
import shutil
from langchain.embeddings.huggingface import HuggingFaceEmbeddings
from langchain.vectorstores import FAISS
from fastapi import File, Form, UploadFile
from server.utils import BaseResponse, ListResponse, torch_gc
from server.utils import BaseResponse, ListResponse
from server.knowledge_base.utils import (validate_kb_name, get_kb_path, get_doc_path,
get_vs_path, get_file_path, file2text)
from configs.model_config import embedding_model_dict, EMBEDDING_MODEL, EMBEDDING_DEVICE
from server.knowledge_base.utils import load_embeddings, refresh_vs_cache
get_file_path, file2text, docs2vs,
refresh_vs_cache, )
async def list_docs(knowledge_base_name: str):
@ -39,7 +36,7 @@ async def upload_doc(file: UploadFile = File(description="上传文件"),
saved_path = get_doc_path(knowledge_base_name)
if not os.path.exists(saved_path):
return BaseResponse(code=404, msg="未找到知识库 {knowledge_base_name}")
return BaseResponse(code=404, msg=f"未找到知识库 {knowledge_base_name}")
file_content = await file.read() # 读取上传文件的内容
@ -48,32 +45,17 @@ async def upload_doc(file: UploadFile = File(description="上传文件"),
file_status = f"文件 {file.filename} 已存在。"
return BaseResponse(code=404, msg=file_status)
with open(file_path, "wb") as f:
f.write(file_content)
try:
with open(file_path, "wb") as f:
f.write(file_content)
except Exception as e:
return BaseResponse(code=500, msg=f"{file.filename} 文件上传失败，报错信息为: {e}")
vs_path = get_vs_path(knowledge_base_name)
# TODO: 重写知识库生成/添加逻辑
filepath = get_file_path(knowledge_base_name, file.filename)
docs = file2text(filepath)
loaded_files = [file]
embeddings = load_embeddings(embedding_model_dict[EMBEDDING_MODEL], EMBEDDING_DEVICE)
if os.path.exists(vs_path) and "index.faiss" in os.listdir(vs_path):
vector_store = FAISS.load_local(vs_path, embeddings)
vector_store.add_documents(docs)
torch_gc()
else:
if not os.path.exists(vs_path):
os.makedirs(vs_path)
vector_store = FAISS.from_documents(docs, embeddings) # docs 为Document列表
torch_gc()
vector_store.save_local(vs_path)
if len(loaded_files) > 0:
file_status = f"成功上传文件 {file.filename}"
refresh_vs_cache(knowledge_base_name)
return BaseResponse(code=200, msg=file_status)
else:
file_status = f"上传文件 {file.filename} 失败"
return BaseResponse(code=500, msg=file_status)
docs2vs(docs, knowledge_base_name)
return BaseResponse(code=200, msg=f"成功上传文件 {file.filename}")
async def delete_doc(knowledge_base_name: str,
@ -84,24 +66,24 @@ async def delete_doc(knowledge_base_name: str,
knowledge_base_name = urllib.parse.unquote(knowledge_base_name)
if not os.path.exists(get_kb_path(knowledge_base_name)):
return BaseResponse(code=404, msg=f"Knowledge base {knowledge_base_name} not found")
return BaseResponse(code=404, msg=f"未找到知识库 {knowledge_base_name}")
doc_path = get_file_path(knowledge_base_name, doc_name)
if os.path.exists(doc_path):
os.remove(doc_path)
remain_docs = await list_docs(knowledge_base_name)
if len(remain_docs.data) == 0:
shutil.rmtree(get_kb_path(knowledge_base_name), ignore_errors=True)
return BaseResponse(code=200, msg=f"document {doc_name} delete success")
return BaseResponse(code=200, msg=f"{doc_name} 文件删除成功")
else:
# TODO: 重写从向量库中删除文件
status = "" # local_doc_qa.delete_file_from_vector_store(doc_path, get_vs_path(knowledge_base_name))
if "success" in status:
refresh_vs_cache(knowledge_base_name)
return BaseResponse(code=200, msg=f"document {doc_name} delete success")
return BaseResponse(code=200, msg=f"{doc_name} 文件删除成功")
else:
return BaseResponse(code=500, msg=f"document {doc_name} delete fail")
return BaseResponse(code=500, msg=f"{doc_name} 文件删除失败")
else:
return BaseResponse(code=404, msg=f"document {doc_name} not found")
return BaseResponse(code=404, msg=f"未找到文件 {doc_name}")
async def update_doc():

19
server/knowledge_base/utils.py
View File

@ -1,4 +1,6 @@
import os
from typing import List
from server.utils import torch_gc
from configs.model_config import KB_ROOT_PATH
from langchain.vectorstores import FAISS
from langchain.embeddings.huggingface import HuggingFaceEmbeddings
@ -43,6 +45,23 @@ def file2text(filepath):
docs = loader.load_and_split(text_splitter)
return docs
def docs2vs(
docs: List[Document],
knowledge_base_name: str):
vs_path = get_vs_path(knowledge_base_name)
embeddings = load_embeddings(embedding_model_dict[EMBEDDING_MODEL], EMBEDDING_DEVICE)
if os.path.exists(vs_path) and "index.faiss" in os.listdir(vs_path):
vector_store = FAISS.load_local(vs_path, embeddings)
vector_store.add_documents(docs)
torch_gc()
else:
if not os.path.exists(vs_path):
os.makedirs(vs_path)
vector_store = FAISS.from_documents(docs, embeddings) # docs 为Document列表
torch_gc()
vector_store.save_local(vs_path)
refresh_vs_cache(knowledge_base_name)
@lru_cache(1)
def load_embeddings(model: str, device: str):