梳理Langchain-Chatchat-UI接口文档

  在 Langchain-Chatchat v0.1.17 版本及以前是有前后端分离的 Vue 项目的,但是 v0.2.0 后就没有了。所以本文使用的是 Langchain-Chatchat v0.1.17 版本中的 Vue 项目。经过一番折腾终于将 Langchain-Chatchat v0.1.17 版本前端 Vue 接口和 Langchain-Chatchat v0.2.8 后端 API 接口调通了。

一.运行 Langchain-Chatchat

1.拉取源码

  拉取 Langchain-Chatchat 源码(Langchain-Chatchat v0.2.8),如下所示:

git clone https://github.com/chatchat-space/Langchain-Chatchat.git

梳理Langchain-Chatchat-UI接口文档_第1张图片

2.安装依赖包

  安装依赖包,如下所示:

pip install -r .\requirements.txt -i https://pypi.tuna.tsinghua.edu.cn/simple

3.模型下载和配置

  模型下载和配置(加速参考文献[3]),如下所示:

python hf_download.py --model THUDM/ChatGLM3-6B --save_dir ./hf_hub
python hf_download.py --model BAAI/bge-large-zh --save_dir ./hf_hub

4.初始化知识库和配置文件

  初始化知识库和配置文件,如下所示:

$ python copy_config_example.py
$ python init_database.py --recreate-vs

  Langchain-Chatchat-0.2.8->configs->model_config.py->embed_model-> 设置 bge-large-zh 本地路径,如下所示:

梳理Langchain-Chatchat-UI接口文档_第2张图片

  Langchain-Chatchat-0.2.8->configs->model_config.py->llm_model-> 设置 chatglm3-6b 本地路径,如下所示:

梳理Langchain-Chatchat-UI接口文档_第3张图片

  Langchain-Chatchat-0.2.8->configs->model_config.py->VLLM_MODEL_DICT-> 设置 chatglm3-6b 本地路径,如下所示:

梳理Langchain-Chatchat-UI接口文档_第4张图片

5.python startup.py -a

$ python startup.py -a

梳理Langchain-Chatchat-UI接口文档_第5张图片

梳理Langchain-Chatchat-UI接口文档_第6张图片

  手动安装 PyTorch 的 CUDA 版本,如下所示:

pip install torch==2.1.0 torchvision==0.16.0 torchaudio==2.1.0 --index-url https://download.pytorch.org/whl/cu118

  控制台输出的日志信息,如下所示:

import sys; print('Python %s on %s' % (sys.version, sys.platform))
Connected to pydev debugger (build 232.9559.58)
L:\20231106_ConversationSystem\ChatCopilot\Langchain\Langchain-Chatchat-0.2.8\venv\Scripts\python.exe "D:/Program Files/JetBrains/PyCharm 2023.1.3/plugins/python/helpers/pydev/pydevd.py" --multiprocess --qt-support=auto --client 127.0.0.1 --port 36490 --file L:\20231106_ConversationSystem\RasaLangchain\Langchain\Langchain-Chatchat-0.2.8\startup.py -a 
==============================Langchain-Chatchat Configuration==============================
操作系统:Windows-10-10.0.19044-SP0.
python版本:3.10.9 (tags/v3.10.9:1dd9be6, Dec  6 2022, 20:01:21) [MSC v.1934 64 bit (AMD64)]
项目版本:v0.2.8
langchain版本:0.0.344. fastchat版本:0.2.34
当前使用的分词器:ChineseRecursiveTextSplitter
<strong>当前启动的LLM模型:['chatglm3-6b', 'zhipu-api', 'openai-api'] @ cuda</strong>
{'device': 'cuda',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'model_path': 'L:\\20230713_HuggingFaceModel\\GLM3\\chatglm3-6b',
 'model_path_exists': True,
 'port': 20002}
{'api_key': '',
 'device': 'auto',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'online_api': True,
 'port': 21001,
 'provider': 'ChatGLMWorker',
 'version': 'chatglm_turbo',
 'worker_class': <class 'server.model_workers.zhipu.ChatGLMWorker'>}
{'api_base_url': 'https://api.openai.com/v1',
 'api_key': '',
 'device': 'auto',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'model_name': 'gpt-3.5-turbo',
 'online_api': True,
 'openai_proxy': '',
 'port': 20002}
<strong>当前Embbedings模型: bge-large-zh @ cuda</strong>
==============================Langchain-Chatchat Configuration==============================
2023-12-24 08:18:36,235 - startup.py[line:650] - INFO: 正在启动服务:
2023-12-24 08:18:36,236 - startup.py[line:651] - INFO: 如需查看 llm_api 日志,请前往 L:\20231106_ConversationSystem\RasaLangchain\Langchain\Langchain-Chatchat-0.2.8\logs
2023-12-24 08:19:30 | INFO | model_worker | Register to controller
2023-12-24 08:19:37 | ERROR | stderr | INFO:     Started server process [126488]
2023-12-24 08:19:37 | ERROR | stderr | INFO:     Waiting for application startup.
2023-12-24 08:19:37 | ERROR | stderr | INFO:     Application startup complete.
2023-12-24 08:19:37 | ERROR | stderr | INFO:     Uvicorn running on http://127.0.0.1:20000 (Press CTRL+C to quit)
2023-12-24 08:21:18 | INFO | model_worker | Loading the model ['chatglm3-6b'] on worker bc7ce098 ...
Loading checkpoint shards:   0%|          | 0/7 [00:00<?, ?it/s]
Loading checkpoint shards:  14%|█▍        | 1/7 [01:08<06:51, 68.62s/it]
Loading checkpoint shards:  29%|██▊       | 2/7 [02:16<05:42, 68.43s/it]
Loading checkpoint shards:  43%|████▎     | 3/7 [03:24<04:31, 67.83s/it]
Loading checkpoint shards:  57%|█████▋    | 4/7 [04:28<03:19, 66.62s/it]
Loading checkpoint shards:  71%|███████▏  | 5/7 [05:36<02:14, 67.16s/it]
Loading checkpoint shards:  86%|████████▌ | 6/7 [06:48<01:08, 68.75s/it]
Loading checkpoint shards: 100%|██████████| 7/7 [07:29<00:00, 59.44s/it]
Loading checkpoint shards: 100%|██████████| 7/7 [07:29<00:00, 64.15s/it]
2023-12-24 08:29:30 | ERROR | stderr | 
2023-12-24 08:30:45 | INFO | model_worker | Register to controller
INFO:     Started server process [125172]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     Uvicorn running on http://127.0.0.1:7861 (Press CTRL+C to quit)
==============================Langchain-Chatchat Configuration==============================
操作系统:Windows-10-10.0.19044-SP0.
python版本:3.10.9 (tags/v3.10.9:1dd9be6, Dec  6 2022, 20:01:21) [MSC v.1934 64 bit (AMD64)]
项目版本:v0.2.8
langchain版本:0.0.344. fastchat版本:0.2.34
当前使用的分词器:ChineseRecursiveTextSplitter
当前启动的LLM模型:['chatglm3-6b', 'zhipu-api', 'openai-api'] @ cuda
{'device': 'cuda',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'model_path': 'L:\\20230713_HuggingFaceModel\\GLM3\\chatglm3-6b',
 'model_path_exists': True,
 'port': 20002}
{'api_key': '',
 'device': 'auto',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'online_api': True,
 'port': 21001,
 'provider': 'ChatGLMWorker',
 'version': 'chatglm_turbo',
 'worker_class': <class 'server.model_workers.zhipu.ChatGLMWorker'>}
{'api_base_url': 'https://api.openai.com/v1',
 'api_key': '',
 'device': 'auto',
 'host': '127.0.0.1',
 'infer_turbo': False,
 'model_name': 'gpt-3.5-turbo',
 'online_api': True,
 'openai_proxy': '',
 'port': 20002}
当前Embbedings模型: bge-large-zh @ cuda
<strong>服务端运行信息:</strong>
<strong>    OpenAI API Server: http://127.0.0.1:20000/v1</strong>
<strong>    Chatchat  API  Server: http://127.0.0.1:7861</strong>
<strong>    Chatchat WEBUI Server: http://127.0.0.1:8501</strong>
==============================Langchain-Chatchat Configuration==============================
  You can now view your Streamlit app in your browser.
  URL: http://127.0.0.1:8501
2023-12-24 08:37:51,151 - _client.py[line:1027] - INFO: HTTP Request: POST http://127.0.0.1:20001/list_models "HTTP/1.1 200 OK"
INFO:     127.0.0.1:31565 - "POST /llm_model/list_running_models HTTP/1.1" 200 OK
2023-12-24 08:37:51,188 - _client.py[line:1027] - INFO: HTTP Request: POST http://127.0.0.1:7861/llm_model/list_running_models "HTTP/1.1 200 OK"
2023-12-24 08:37:51,331 - _client.py[line:1027] - INFO: HTTP Request: POST http://127.0.0.1:20001/list_models "HTTP/1.1 200 OK"
2023-12-24 08:37:51,337 - _client.py[line:1027] - INFO: HTTP Request: POST http://127.0.0.1:7861/llm_model/list_running_models "HTTP/1.1 200 OK"
INFO:     127.0.0.1:31565 - "POST /llm_model/list_running_models HTTP/1.1" 200 OK
INFO:     127.0.0.1:31565 - "POST /llm_model/list_config_models HTTP/1.1" 200 OK
2023-12-24 08:37:51,413 - _client.py[line:1027] - INFO: HTTP Request: POST http://127.0.0.1:7861/llm_model/list_config_models "HTTP/1.1 200 OK"

(1)OpenAI API Server: http://127.0.0.1/v1

(2)Chatchat API Server: http://127.0.0.1

这个是 Langchain-Chatchat v0.2.8 版本后端 API 接口文档,如下所示:

梳理Langchain-Chatchat-UI接口文档_第7张图片

梳理Langchain-Chatchat-UI接口文档_第8张图片

梳理Langchain-Chatchat-UI接口文档_第9张图片

(3)Chatchat WEBUI Server: http://127.0.0.1

梳理Langchain-Chatchat-UI接口文档_第10张图片

  对话模式包括:LLM 对话,知识库问答,文件对话,搜索引擎问答,自定义 Agent 问答。

二.运行 Langchain-Chatchat-UI

  在 Langchain-Chatchat v0.1.17 版本及以前是有前后端分离的 Vue 项目的,但是 v0.2.0 后就没有了。所以本文使用的是 Langchain-Chatchat v0.1.17 版本中的 Vue 项目。运行前端项目基本命令就是 npm installnpm run dev

梳理Langchain-Chatchat-UI接口文档_第11张图片

1.不能找到模块 node:path

  当执行 npm run dev 时报错,显示 Error: Cannot find module 'node:path'。如下所示:

梳理Langchain-Chatchat-UI接口文档_第12张图片

梳理Langchain-Chatchat-UI接口文档_第13张图片

  以前用的 Vue2+Node 14.17.0,更换为 node-v16.16.0 就好了。执行命令,如下所示:

npm install npm@6 -g
npm cache clear --force
npm install
npm run dev

2.将前端 Vue 项目跑起来

梳理Langchain-Chatchat-UI接口文档_第14张图片

  这个是 Langchain-Chatchat v0.1.17 版本前端 Vue 的界面(Langchain-Chatchat v0.2.8 后端 API 接口有所调整,需要更新前端接口才能将其运行起来),如下所示:

梳理Langchain-Chatchat-UI接口文档_第15张图片

3.遇到的问题

(1)搜索引擎接口

http://localhost:8090/api/chat/search_engine_chat

梳理Langchain-Chatchat-UI接口文档_第16张图片

(2)知识库检索接口

http://localhost:8090/api/chat/file_chat

报错:未找到临时知识库 samples,请先上传文件,但是知识库是已经存在的。

原因:应该调用 knowledge_base_chat 知识库对话接口,而 file_chat 是与临时文件进行对话的接口。

梳理Langchain-Chatchat-UI接口文档_第17张图片

  调用 knowledge_base_chat 成功后的信息,如下所示:

梳理Langchain-Chatchat-UI接口文档_第18张图片

(3)文件上传接口

http://localhost:8090/api/knowledge_base/upload_docs

  说明:经过一番折腾终于将 Langchain-Chatchat v0.1.17 版本前端 Vue 接口和 Langchain-Chatchat v0.2.8 后端 API 接口调通了(前端界面暂不开源,若有问题可以交流)。

参考文献

[1] https://nodejs.org/download/release/v16.16.0/

[2] https://github.com/chatchat-space/Langchain-Chatchat

[3] https://github.com/LetheSec/HuggingFace-Download-Accelerator

[4] https://pytorch.org/get-started/previous-versions/

你可能感兴趣的:(langchain,ui)