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FIX Remove
aria2c dependency from HuggingFace Target (#530)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| # Copyright (c) Microsoft Corporation. | ||
| # Licensed under the MIT license. | ||
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| import asyncio | ||
| import logging | ||
| import os | ||
| import httpx | ||
| from pathlib import Path | ||
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| from huggingface_hub import HfApi | ||
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| logger = logging.getLogger(__name__) | ||
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| def get_available_files(model_id: str, token: str): | ||
| """Fetches available files for a model from the Hugging Face repository.""" | ||
| api = HfApi() | ||
| try: | ||
| model_info = api.model_info(model_id, token=token) | ||
| available_files = [file.rfilename for file in model_info.siblings] | ||
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| # Perform simple validation: raise a ValueError if no files are available | ||
| if not len(available_files): | ||
| raise ValueError(f"No available files found for the model: {model_id}") | ||
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| return available_files | ||
| except Exception as e: | ||
| logger.info(f"Error fetching model files for {model_id}: {e}") | ||
| return [] | ||
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| async def download_specific_files(model_id: str, file_patterns: list, token: str, cache_dir: Path): | ||
| """ | ||
| Downloads specific files from a Hugging Face model repository. | ||
| If file_patterns is None, downloads all files. | ||
| Returns: | ||
| List of URLs for the downloaded files. | ||
| """ | ||
| os.makedirs(cache_dir, exist_ok=True) | ||
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| available_files = get_available_files(model_id, token) | ||
| # If no file patterns are provided, download all available files | ||
| if file_patterns is None: | ||
| files_to_download = available_files | ||
| logger.info(f"Downloading all files for model {model_id}.") | ||
| else: | ||
| # Filter files based on the patterns provided | ||
| files_to_download = [file for file in available_files if any(pattern in file for pattern in file_patterns)] | ||
| if not files_to_download: | ||
| logger.info(f"No files matched the patterns provided for model {model_id}.") | ||
| return | ||
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| # Generate download URLs directly | ||
| base_url = f"https://huggingface.co/{model_id}/resolve/main/" | ||
| urls = [base_url + file for file in files_to_download] | ||
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| # Download the files | ||
| await download_files(urls, token, cache_dir) | ||
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| async def download_chunk(url, headers, start, end, client): | ||
| """Download a chunk of the file with a specified byte range.""" | ||
| range_header = {"Range": f"bytes={start}-{end}", **headers} | ||
| response = await client.get(url, headers=range_header) | ||
| response.raise_for_status() | ||
| return response.content | ||
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| async def download_file(url, token, download_dir, num_splits): | ||
| """Download a file in multiple segments (splits) using byte-range requests.""" | ||
| headers = {"Authorization": f"Bearer {token}"} | ||
| async with httpx.AsyncClient(follow_redirects=True) as client: | ||
| # Get the file size to determine chunk size | ||
| response = await client.head(url, headers=headers) | ||
| response.raise_for_status() | ||
| file_size = int(response.headers["Content-Length"]) | ||
| chunk_size = file_size // num_splits | ||
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| # Prepare tasks for each chunk | ||
| tasks = [] | ||
| file_name = url.split("/")[-1] | ||
| file_path = Path(download_dir, file_name) | ||
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| for i in range(num_splits): | ||
| start = i * chunk_size | ||
| end = start + chunk_size - 1 if i < num_splits - 1 else file_size - 1 | ||
| tasks.append(download_chunk(url, headers, start, end, client)) | ||
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| # Download all chunks concurrently | ||
| chunks = await asyncio.gather(*tasks) | ||
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| # Write chunks to the file in order | ||
| with open(file_path, "wb") as f: | ||
| for chunk in chunks: | ||
| f.write(chunk) | ||
| logger.info(f"Downloaded {file_name} to {file_path}") | ||
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| async def download_files(urls: list[str], token: str, download_dir: Path, num_splits=3, parallel_downloads=4): | ||
| """Download multiple files with parallel downloads and segmented downloading.""" | ||
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| # Limit the number of parallel downloads | ||
| semaphore = asyncio.Semaphore(parallel_downloads) | ||
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| async def download_with_limit(url): | ||
| async with semaphore: | ||
| await download_file(url, token, download_dir, num_splits) | ||
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| # Run downloads concurrently, but limit to parallel_downloads at a time | ||
| await asyncio.gather(*(download_with_limit(url) for url in urls)) |
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