ragflow/rag/llm/chat_model.py

#
#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
from abc import ABC
from copy import deepcopy

from openai import OpenAI
import openai

from rag.nlp import is_english


class Base(ABC):
    def __init__(self, key, model_name):
        pass

    def chat(self, system, history, gen_conf):
        raise NotImplementedError("Please implement encode method!")


class GptTurbo(Base):
    def __init__(self, key, model_name="gpt-3.5-turbo"):
        self.client = OpenAI(api_key=key)
        self.model_name = model_name

    def chat(self, system, history, gen_conf):
        if system: history.insert(0, {"role": "system", "content": system})
        try:
            response = self.client.chat.completions.create(
                model=self.model_name,
                messages=history,
                **gen_conf)
            ans = response.output.choices[0]['message']['content'].strip()
            if response.output.choices[0].get("finish_reason", "") == "length":
                ans += "...\nFor the content length reason, it stopped, continue?" if is_english(
                    [ans]) else "······\n由于长度的原因，回答被截断了，要继续吗？"
            return ans, response.usage.completion_tokens
        except openai.APIError as e:
            return "**ERROR**: "+str(e), 0


from dashscope import Generation
class QWenChat(Base):
    def __init__(self, key, model_name=Generation.Models.qwen_turbo):
        import dashscope
        dashscope.api_key = key
        self.model_name = model_name

    def chat(self, system, history, gen_conf):
        from http import HTTPStatus
        if system: history.insert(0, {"role": "system", "content": system})
        response = Generation.call(
            self.model_name,
            messages=history,
            result_format='message',
            **gen_conf
        )
        ans = ""
        tk_count = 0
        if response.status_code == HTTPStatus.OK:
            ans += response.output.choices[0]['message']['content']
            tk_count += response.usage.output_tokens
            if response.output.choices[0].get("finish_reason", "") == "length":
                ans += "...\nFor the content length reason, it stopped, continue?" if is_english([ans]) else "······\n由于长度的原因，回答被截断了，要继续吗？"
            return ans, tk_count

        return "**ERROR**: " + response.message, tk_count


from zhipuai import ZhipuAI
class ZhipuChat(Base):
    def __init__(self, key, model_name="glm-3-turbo"):
        self.client = ZhipuAI(api_key=key)
        self.model_name = model_name

    def chat(self, system, history, gen_conf):
        from http import HTTPStatus
        if system: history.insert(0, {"role": "system", "content": system})
        try:
            response = self.client.chat.completions.create(
                self.model_name,
                messages=history,
                **gen_conf
            )
            ans = response.output.choices[0]['message']['content'].strip()
            if response.output.choices[0].get("finish_reason", "") == "length":
                ans += "...\nFor the content length reason, it stopped, continue?" if is_english(
                    [ans]) else "······\n由于长度的原因，回答被截断了，要继续吗？"
            return ans, response.usage.completion_tokens
        except Exception as e:
            return "**ERROR**: " + str(e), 0