56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
# coding=utf-8
|
||
"""
|
||
@project: maxkb
|
||
@Author：虎
|
||
@file： llm.py
|
||
@date：2024/4/28 11:42
|
||
@desc:
|
||
"""
|
||
|
||
from typing import Dict, List
|
||
|
||
from langchain_core.messages import BaseMessage, get_buffer_string
|
||
|
||
from common.config.tokenizer_manage_config import TokenizerManage
|
||
from models_provider.base_model_provider import MaxKBBaseModel
|
||
from models_provider.impl.base_chat_open_ai import BaseChatOpenAI
|
||
|
||
|
||
def custom_get_token_ids(text: str):
|
||
tokenizer = TokenizerManage.get_tokenizer()
|
||
return tokenizer.encode(text)
|
||
|
||
|
||
class ZhipuChatModel(MaxKBBaseModel, BaseChatOpenAI):
|
||
|
||
@staticmethod
|
||
def is_cache_model():
|
||
return False
|
||
|
||
@staticmethod
|
||
def new_instance(model_type, model_name, model_credential: Dict[str, object], **model_kwargs):
|
||
optional_params = MaxKBBaseModel.filter_optional_params(model_kwargs)
|
||
zhipuai_chat = ZhipuChatModel(
|
||
api_key=model_credential.get('api_key'),
|
||
model=model_name,
|
||
base_url='https://open.bigmodel.cn/api/paas/v4',
|
||
extra_body=optional_params,
|
||
streaming=model_kwargs.get('streaming', False),
|
||
custom_get_token_ids=custom_get_token_ids
|
||
)
|
||
return zhipuai_chat
|
||
|
||
def get_num_tokens_from_messages(self, messages: List[BaseMessage]) -> int:
|
||
try:
|
||
return super().get_num_tokens_from_messages(messages)
|
||
except Exception as e:
|
||
tokenizer = TokenizerManage.get_tokenizer()
|
||
return sum([len(tokenizer.encode(get_buffer_string([m]))) for m in messages])
|
||
|
||
def get_num_tokens(self, text: str) -> int:
|
||
try:
|
||
return super().get_num_tokens(text)
|
||
except Exception as e:
|
||
tokenizer = TokenizerManage.get_tokenizer()
|
||
return len(tokenizer.encode(text))
|