You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Readme
Files and versions
90 lines
3.2 KiB
90 lines
3.2 KiB
# Copyright 2021 Zilliz. 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.
|
|
|
|
import os
|
|
from typing import List
|
|
|
|
from huggingface_hub import hf_hub_download
|
|
from llama_cpp import Llama
|
|
|
|
from towhee.operator.base import PyOperator, SharedType
|
|
|
|
|
|
class LlamaCpp(PyOperator):
|
|
'''Wrapper of Dolly inference'''
|
|
def __init__(self,
|
|
model_name_or_file: str = 'llama-2-7b-chat',
|
|
**kwargs
|
|
):
|
|
self.kwargs = kwargs
|
|
supported_model_names = self.supported_model_names()
|
|
|
|
if model_name_or_file in supported_model_names:
|
|
model_info = supported_model_names[model_name_or_file]
|
|
hf_id = model_info['hf_id']
|
|
model_filename = model_info['filename']
|
|
self.model_path = hf_hub_download(repo_id=hf_id, filename=model_filename)
|
|
else:
|
|
self.model_path = model_name_or_file
|
|
assert os.path.isfile(self.model_path), f'Invalid model path: {self.model_path}'
|
|
|
|
print(111, self.model_path)
|
|
self.model = Llama(model_path=self.model_path)
|
|
|
|
def __call__(self, messages: List[dict]):
|
|
prompt = self.parse_inputs(messages)
|
|
resp = self.model(prompt, **self.kwargs)
|
|
answer = self.parse_outputs(resp)
|
|
return answer
|
|
|
|
def parse_inputs(self, messages: List[dict]):
|
|
assert isinstance(messages, list), \
|
|
'Inputs must be a list of dictionaries with keys from ["system", "question", "answer"].'
|
|
prompt = ''
|
|
question = messages.pop[-1]
|
|
assert len(question) == 1 and 'question' in question.keys()
|
|
question = question['question']
|
|
for m in messages:
|
|
for k, v in m.items():
|
|
if k == 'system':
|
|
prompt += f'''[INST] <<SYS>> {v} <</SYS>> [/INST]\n'''
|
|
elif k == 'question':
|
|
prompt += f'''[INST] {v} [/INST]\n'''
|
|
elif k == 'answer':
|
|
prompt += f'''{v}\n'''
|
|
else:
|
|
raise KeyError(f'Invalid key of message: {k}')
|
|
prompt = '<s> ' + prompt + ' </s>' + f'<s> [INST] {question} [/INST]'
|
|
return prompt
|
|
|
|
def parse_outputs(self, response):
|
|
return response['choices'][0]['text']
|
|
|
|
@staticmethod
|
|
def supported_model_names():
|
|
models = {
|
|
'llama-2-7b-chat': {
|
|
'hf_id': 'TheBloke/Llama-2-7B-GGML',
|
|
'filename': 'llama-2-7b.ggmlv3.q4_0.bin'
|
|
},
|
|
'llama-2-13-b-chat': {
|
|
'hf_id': 'TheBloke/Llama-2-13B-GGML',
|
|
'filename': 'llama-2-13b-chat.ggmlv3.q4_0.bin'
|
|
}
|
|
}
|
|
return models
|
|
|
|
@property
|
|
def shared_type(self):
|
|
return SharedType.Shareable
|