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# 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 numpy
import os
import torch
from pathlib import Path
from transformers import AutoTokenizer, AutoModel
from towhee.operator import NNOperator
from towhee import register
import warnings
import logging
warnings.filterwarnings('ignore')
logging.getLogger("transformers").setLevel(logging.ERROR)
log = logging.getLogger()
@register(output_schema=['vec'])
class AutoTransformers(NNOperator):
"""
NLP embedding operator that uses the pretrained transformers model gathered by huggingface.
Args:
model_name (`str`):
Which model to use for the embeddings.
"""
def __init__(self, model_name: str = "bert-base-uncased") -> None:
super().__init__()
self.model_name = model_name
try:
self.model = AutoModel.from_pretrained(model_name)
self.model.eval()
except Exception as e:
model_list = self.supported_model_names()
if model_name not in model_list:
log.error(f"Invalid model name: {model_name}. Supported model names: {model_list}")
else:
log.error(f"Fail to load model by name: {self.model_name}")
raise e
try:
self.tokenizer = AutoTokenizer.from_pretrained(model_name)
except Exception as e:
log.error(f'Fail to load tokenizer by name: {self.model_name}')
raise e
def __call__(self, txt: str) -> numpy.ndarray:
try:
inputs = self.tokenizer(txt, return_tensors="pt")
except Exception as e:
log.error(f'Invalid input for the tokenizer: {self.model_name}')
raise e
try:
outs = self.model(**inputs)
except Exception as e:
log.error(f'Invalid input for the model: {self.model_name}')
raise e
try:
features = outs['last_hidden_state'].squeeze(0)
except Exception as e:
log.error(f'Fail to extract features by model: {self.model_name}')
raise e
vec = features.detach().numpy()
return vec
def save_model(self, format: str = 'pytorch', path: str = 'default'):
if path == 'default':
path = str(Path(__file__).parent)
path = os.path.join(path, 'saved', format)
os.makedirs(path, exist_ok=True)
name = self.model_name.replace('/', '-')
path = os.path.join(path, name)
inputs = self.tokenizer('[CLS]', return_tensors='pt') # a dictionary
if format == 'pytorch':
path = path + '.pt'
torch.save(self.model, path)
elif format == 'torchscript':
path = path + '.pt'
inputs = list(inputs.values())
try:
try:
jit_model = torch.jit.script(self.model)
except Exception:
jit_model = torch.jit.trace(self.model, inputs, strict=False)
torch.jit.save(jit_model, path)
except Exception as e:
log.error(f'Fail to save as torchscript: {e}.')
raise RuntimeError(f'Fail to save as torchscript: {e}.')
elif format == 'onnx':
path = path + '.onnx'
try:
torch.onnx.export(self.model,
tuple(inputs.values()),
path,
input_names=["input_ids", "token_type_ids", "attention_mask"], # list(inputs.keys())
output_names=["last_hidden_state"],
opset_version=12,
dynamic_axes={
"input_ids": {0: "batch_size", 1: "input_length"},
"token_type_ids": {0: "batch_size", 1: "input_length"},
"attention_mask": {0: "batch_size", 1: "input_length"},
"last_hidden_state": {0: "batch_size"},
})
except Exception:
torch.onnx.export(self.model,
tuple(inputs.values()),
path,
input_names=["input_ids", "token_type_ids", "attention_mask"], # list(inputs.keys())
output_names=["last_hidden_state", "pooler_output"],
opset_version=12,
dynamic_axes={
"input_ids": {0: "batch_size", 1: "input_length"},
"token_type_ids": {0: "batch_size", 1: "input_length"},
"attention_mask": {0: "batch_size", 1: "input_length"},
"last_hidden_state": {0: "batch_size"},
"pooler_outputs": {0: "batch_size"}
})
elif format == 'tensorrt':
# os.system('pip install "git+https://github.com/grimoire/torch2trt_dynamic.git"')
pass
else:
log.error(f'Unsupported format "{format}".')
@staticmethod
def supported_model_names(format: str = None):
full_list = [
"bert-large-uncased",
"bert-base-cased",
"bert-large-cased",
"bert-base-multilingual-uncased",
"bert-base-multilingual-cased",
"bert-base-chinese",
"bert-base-german-cased",
"bert-large-uncased-whole-word-masking",
"bert-large-cased-whole-word-masking",
"bert-large-uncased-whole-word-masking-finetuned-squad",
"bert-large-cased-whole-word-masking-finetuned-squad",
"bert-base-cased-finetuned-mrpc",
"bert-base-german-dbmdz-cased",
"bert-base-german-dbmdz-uncased",
"cl-tohoku/bert-base-japanese-whole-word-masking",
"cl-tohoku/bert-base-japanese-char",
"cl-tohoku/bert-base-japanese-char-whole-word-masking",
"TurkuNLP/bert-base-finnish-cased-v1",
"TurkuNLP/bert-base-finnish-uncased-v1",
"wietsedv/bert-base-dutch-cased",
"google/bigbird-roberta-base",
"google/bigbird-roberta-large",
"google/bigbird-base-trivia-itc",
"albert-base-v1",
"albert-large-v1",
"albert-xlarge-v1",
"albert-xxlarge-v1",
"albert-base-v2",
"albert-large-v2",
"albert-xlarge-v2",
"albert-xxlarge-v2",
"facebook/bart-large",
"google/bert_for_seq_generation_L-24_bbc_encoder",
"google/bigbird-pegasus-large-arxiv",
"google/bigbird-pegasus-large-pubmed",
"google/bigbird-pegasus-large-bigpatent",
"google/canine-s",
"google/canine-c",
"YituTech/conv-bert-base",
"YituTech/conv-bert-medium-small",
"YituTech/conv-bert-small",
"ctrl",
"microsoft/deberta-base",
"microsoft/deberta-large",
"microsoft/deberta-xlarge",
"microsoft/deberta-base-mnli",
"microsoft/deberta-large-mnli",
"microsoft/deberta-xlarge-mnli",
"distilbert-base-uncased",
"distilbert-base-uncased-distilled-squad",
"distilbert-base-cased",
"distilbert-base-cased-distilled-squad",
"distilbert-base-german-cased",
"distilbert-base-multilingual-cased",
"distilbert-base-uncased-finetuned-sst-2-english",
"google/electra-small-generator",
"google/electra-base-generator",
"google/electra-large-generator",
"google/electra-small-discriminator",
"google/electra-base-discriminator",
"google/electra-large-discriminator",
"google/fnet-base",
"google/fnet-large",
"facebook/wmt19-ru-en",
"funnel-transformer/small",
"funnel-transformer/small-base",
"funnel-transformer/medium",
"funnel-transformer/medium-base",
"funnel-transformer/intermediate",
"funnel-transformer/intermediate-base",
"funnel-transformer/large",
"funnel-transformer/large-base",
"funnel-transformer/xlarge-base",
"funnel-transformer/xlarge",
"gpt2",
"gpt2-medium",
"gpt2-large",
"gpt2-xl",
"distilgpt2",
"EleutherAI/gpt-neo-1.3B",
"EleutherAI/gpt-j-6B",
"kssteven/ibert-roberta-base",
"allenai/led-base-16384",
"google/mobilebert-uncased",
"microsoft/mpnet-base",
"uw-madison/nystromformer-512",
"openai-gpt",
"google/reformer-crime-and-punishment",
"tau/splinter-base",
"tau/splinter-base-qass",
"tau/splinter-large",
"tau/splinter-large-qass",
"squeezebert/squeezebert-uncased",
"squeezebert/squeezebert-mnli",
"squeezebert/squeezebert-mnli-headless",
"transfo-xl-wt103",
"xlm-mlm-en-2048",
"xlm-mlm-ende-1024",
"xlm-mlm-enfr-1024",
"xlm-mlm-enro-1024",
"xlm-mlm-tlm-xnli15-1024",
"xlm-mlm-xnli15-1024",
"xlm-clm-enfr-1024",
"xlm-clm-ende-1024",
"xlm-mlm-17-1280",
"xlm-mlm-100-1280",
"xlm-roberta-base",
"xlm-roberta-large",
"xlm-roberta-large-finetuned-conll02-dutch",
"xlm-roberta-large-finetuned-conll02-spanish",
"xlm-roberta-large-finetuned-conll03-english",
"xlm-roberta-large-finetuned-conll03-german",
"xlnet-base-cased",
"xlnet-large-cased",
"uw-madison/yoso-4096",
"microsoft/deberta-v2-xlarge",
"microsoft/deberta-v2-xxlarge",
"microsoft/deberta-v2-xlarge-mnli",
"microsoft/deberta-v2-xxlarge-mnli",
"flaubert/flaubert_small_cased",
"flaubert/flaubert_base_uncased",
"flaubert/flaubert_base_cased",
"flaubert/flaubert_large_cased",
"camembert-base",
"Musixmatch/umberto-commoncrawl-cased-v1",
"Musixmatch/umberto-wikipedia-uncased-v1",
]
full_list.sort()
if format is None:
model_list = full_list
elif format == 'pytorch':
to_remove = []
assert set(to_remove).issubset(set(full_list))
model_list = list(set(full_list) - set(to_remove))
elif format == 'torchscript':
to_remove = [
'EleutherAI/gpt-j-6B',
'EleutherAI/gpt-neo-1.3B',
'allenai/led-base-16384',
'ctrl',
'distilgpt2',
'facebook/bart-large',
'google/bigbird-pegasus-large-arxiv',
'google/bigbird-pegasus-large-bigpatent',
'google/bigbird-pegasus-large-pubmed',
'google/canine-c',
'google/canine-s',
'google/reformer-crime-and-punishment',
'gpt2',
'gpt2-large',
'gpt2-medium',
'gpt2-xl',
'microsoft/deberta-base',
'microsoft/deberta-base-mnli',
'microsoft/deberta-large',
'microsoft/deberta-large-mnli',
'microsoft/deberta-xlarge',
'microsoft/deberta-xlarge-mnli',
'openai-gpt',
'transfo-xl-wt103',
'uw-madison/yoso-4096',
'xlm-clm-ende-1024',
'xlm-clm-enfr-1024',
'xlm-mlm-100-1280',
'xlm-mlm-17-1280',
'xlm-mlm-en-2048',
'xlm-mlm-ende-1024',
'xlm-mlm-enfr-1024',
'xlm-mlm-enro-1024',
'xlm-mlm-tlm-xnli15-1024',
'xlm-mlm-xnli15-1024',
'xlnet-base-cased',
'xlnet-large-cased',
'microsoft/deberta-v2-xlarge',
'microsoft/deberta-v2-xxlarge',
'microsoft/deberta-v2-xlarge-mnli',
'microsoft/deberta-v2-xxlarge-mnli',
'flaubert/flaubert_small_cased',
'flaubert/flaubert_base_uncased',
'flaubert/flaubert_base_cased',
'flaubert/flaubert_large_cased'
]
assert set(to_remove).issubset(set(full_list))
model_list = list(set(full_list) - set(to_remove))
else: # todo: format in {'onnx', 'tensorrt'}
log.error(f'Invalid format "{format}". Currently supported formats: "pytorch", "torchscript".')
return model_list