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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distibuted with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import glob
import json
import os
import pathlib
import shutil
import tempfile
from typing import Annotated
import onnx
import typer
# To use:
# pip install onnx typer
# python convert_to_external_data --base-path "/path/to/directory"
def convert(model_path, save_path):
model = onnx.load(model_path)
external_data_name = f"{pathlib.Path(model_path).stem}.onnx_data"
# Create the new model in a temporary directory and copy all it's content back to save_path
# Doing this because if save_path is same as model_path & we directly write to model_path
# onnx will append to the external data path which would make it grow more than expected.
with tempfile.TemporaryDirectory() as tmp_dir:
tmp_model_path = os.path.join(tmp_dir, os.path.basename(model_path))
onnx.save_model(
model,
tmp_model_path,
save_as_external_data=True,
location=external_data_name,
)
file_names = os.listdir(tmp_dir)
target_dir = str(pathlib.Path(save_path).parent)
os.makedirs(target_dir, exist_ok=True)
for file_name in file_names:
shutil.copy2(os.path.join(tmp_dir, file_name), target_dir)
def main(base_path: Annotated[str, typer.Option()]):
"""
This will convert recursively all onnx models in that directory to one with external data format.
"""
# Convert all
for model_path in glob.glob(
os.path.join(base_path, "**/*.onnx"),
recursive=True,
):
print("Converting", model_path)
convert(model_path, model_path)
# Find all config.json and enable use_external_data_format
for config_path in glob.glob(
os.path.join(base_path, "**/config.json"),
recursive=True,
):
print("Modifying", config_path)
# Load the JSON file
with open(config_path) as infile:
config_data = json.load(infile)
config_data["transformers.js_config"] = config_data.get(
"transformers.js_config", {}
)
config_data["transformers.js_config"]["use_external_data_format"] = True
# Save the JSON file with additional config
with open(config_path, "w") as outfile:
json.dump(config_data, outfile, indent=4, ensure_ascii=False)
if __name__ == "__main__":
typer.run(main)
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