Langchain-Chatchat/server/chat/openai_chat.py
liunux4odoo d316efe8d3
release 0.2.6 (#1815)
## 🛠 新增功能

- 支持百川在线模型 (@hzg0601 @liunux4odoo in #1623)
- 支持 Azure OpenAI 与 claude 等 Langchain 自带模型 (@zRzRzRzRzRzRzR in #1808)
- Agent 功能大量更新,支持更多的工具、更换提示词、检索知识库 (@zRzRzRzRzRzRzR in #1626 #1666 #1785)
- 加长 32k 模型的历史记录 (@zRzRzRzRzRzRzR in #1629 #1630)
- *_chat 接口支持 max_tokens 参数 (@liunux4odoo in #1744)
- 实现 API 和 WebUI 的前后端分离 (@liunux4odoo in #1772)
- 支持 zlilliz 向量库 (@zRzRzRzRzRzRzR in #1785)
- 支持 metaphor 搜索引擎 (@liunux4odoo in #1792)
- 支持 p-tuning 模型 (@hzg0601 in #1810)
- 更新完善文档和 Wiki (@imClumsyPanda @zRzRzRzRzRzRzR @glide-the in #1680 #1811)

## 🐞 问题修复

- 修复 bge-* 模型匹配超过 1 的问题 (@zRzRzRzRzRzRzR in #1652)
- 修复系统代理为空的问题 (@glide-the in #1654)
- 修复重建知识库时 `d == self.d assert error` (@liunux4odoo in #1766)
- 修复对话历史消息错误 (@liunux4odoo in #1801)
- 修复 OpenAI 无法调用的 bug (@zRzRzRzRzRzRzR in #1808)
- 修复 windows下 BIND_HOST=0.0.0.0 时对话出错的问题 (@hzg0601 in #1810)
2023-10-20 23:16:06 +08:00

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from fastapi.responses import StreamingResponse
from typing import List
import openai
from configs import LLM_MODEL, logger, log_verbose
from server.utils import get_model_worker_config, fschat_openai_api_address
from pydantic import BaseModel
class OpenAiMessage(BaseModel):
role: str = "user"
content: str = "hello"
class OpenAiChatMsgIn(BaseModel):
model: str = LLM_MODEL
messages: List[OpenAiMessage]
temperature: float = 0.7
n: int = 1
max_tokens: int = None
stop: List[str] = []
stream: bool = False
presence_penalty: int = 0
frequency_penalty: int = 0
async def openai_chat(msg: OpenAiChatMsgIn):
config = get_model_worker_config(msg.model)
openai.api_key = config.get("api_key", "EMPTY")
print(f"{openai.api_key=}")
openai.api_base = config.get("api_base_url", fschat_openai_api_address())
print(f"{openai.api_base=}")
print(msg)
async def get_response(msg):
data = msg.dict()
try:
response = await openai.ChatCompletion.acreate(**data)
if msg.stream:
async for data in response:
if choices := data.choices:
if chunk := choices[0].get("delta", {}).get("content"):
print(chunk, end="", flush=True)
yield chunk
else:
if response.choices:
answer = response.choices[0].message.content
print(answer)
yield(answer)
except Exception as e:
msg = f"获取ChatCompletion时出错{e}"
logger.error(f'{e.__class__.__name__}: {msg}',
exc_info=e if log_verbose else None)
return StreamingResponse(
get_response(msg),
media_type='text/event-stream',
)