Maas-Agent/apps/models_provider/tools.py

# coding=utf-8
"""
    @project: MaxKB
    @Author：虎
    @file： tools.py
    @date：2024/7/22 11:18
    @desc:
"""
from django.db import connection
from django.db.models import QuerySet

from common.config.embedding_config import ModelManage
from common.database_model_manage.database_model_manage import DatabaseModelManage
from models_provider.models import Model
from django.utils.translation import gettext_lazy as _

import json
from typing import Dict

from common.utils.rsa_util import rsa_long_decrypt
from models_provider.constants.model_provider_constants import ModelProvideConstants


def get_model_(provider, model_type, model_name, credential, model_id, use_local=False, **kwargs):
    """
    获取模型实例
    @param provider:   供应商
    @param model_type: 模型类型
    @param model_name: 模型名称
    @param credential: 认证信息
    @param model_id:   模型id
    @param use_local:  是否调用本地模型 只适用于本地供应商
    @return: 模型实例
    """
    model = get_provider(provider).get_model(model_type, model_name,
                                             json.loads(
                                                 rsa_long_decrypt(credential)),
                                             model_id=model_id,
                                             use_local=use_local,
                                             streaming=True, **kwargs)
    return model


def get_model(model, **kwargs):
    """
    获取模型实例
    @param model: model 数据库Model实例对象
    @return: 模型实例
    """
    return get_model_(model.provider, model.model_type, model.model_name, model.credential, str(model.id), **kwargs)


def get_provider(provider):
    """
    获取供应商实例
    @param provider: 供应商字符串
    @return: 供应商实例
    """
    return ModelProvideConstants[provider].value


def get_model_list(provider, model_type):
    """
    获取模型列表
    @param provider:   供应商字符串
    @param model_type: 模型类型
    @return:  模型列表
    """
    return get_provider(provider).get_model_list(model_type)


def get_model_credential(provider, model_type, model_name):
    """
    获取模型认证实例
    @param provider:   供应商字符串
    @param model_type: 模型类型
    @param model_name: 模型名称
    @return:  认证实例对象
    """
    return get_provider(provider).get_model_credential(model_type, model_name)


def get_model_type_list(provider):
    """
    获取模型类型列表
    @param provider:  供应商字符串
    @return:  模型类型列表
    """
    return get_provider(provider).get_model_type_list()


def is_valid_credential(provider, model_type, model_name, model_credential: Dict[str, object], model_params,
                        raise_exception=False):
    """
    校验模型认证参数
    @param provider:         供应商字符串
    @param model_type:       模型类型
    @param model_name:       模型名称
    @param model_credential: 模型认证数据
    @param raise_exception:  是否抛出错误
    @return: True|False
    """
    return get_provider(provider).is_valid_credential(model_type, model_name, model_credential, model_params,
                                                      raise_exception)


def get_model_by_id(_id, workspace_id):
    model = QuerySet(Model).filter(id=_id).first()
    # 归还链接到连接池
    connection.close()
    get_authorized_model = DatabaseModelManage.get_model("get_authorized_model")
    if model and model.workspace_id != workspace_id and get_authorized_model is not None:
        model = get_authorized_model(QuerySet(Model).filter(id=_id), workspace_id).first()
    if model is None:
        raise Exception(_("Model does not exist"))
    return model

def get_model_default_params(model):
    def convert_to_int(value):
        if isinstance(value, str):
            try:
                return int(value)
            except ValueError:
                return value
        return value

    return {
        p.get('field'): convert_to_int(p.get('default_value'))
        for p in model.model_params_form
        if p.get('default_value') is not None
    }


def get_model_instance_by_model_workspace_id(model_id, workspace_id, **kwargs):
    """
    获取模型实例,根据模型相关数据
    @param model_id:        模型id
    @param workspace_id:    工作空间id
    @return:                模型实例
    """
    model = get_model_by_id(model_id, workspace_id)
    s = get_model_default_params(model)
    return ModelManage.get_model(model_id, lambda _id: get_model(model, **{**s, **kwargs}))