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"""
Download progress tracker for Hugging Face models.
Tracks real-time download progress in bytes.
"""
import threading
import time
from typing import Dict, Optional
from dataclasses import dataclass, field
@dataclass
class DownloadProgress:
"""Track download progress for a single file."""
filename: str
total_bytes: int = 0
downloaded_bytes: int = 0
started_at: Optional[float] = None
completed_at: Optional[float] = None
speed_bytes_per_sec: float = 0.0
@property
def percentage(self) -> float:
"""Calculate download percentage."""
if self.total_bytes == 0:
return 0.0
return min(100.0, (self.downloaded_bytes / self.total_bytes) * 100.0)
@property
def is_complete(self) -> bool:
"""Check if download is complete."""
return self.total_bytes > 0 and self.downloaded_bytes >= self.total_bytes
@property
def elapsed_time(self) -> float:
"""Get elapsed time in seconds."""
if self.started_at is None:
return 0.0
end_time = self.completed_at or time.time()
return end_time - self.started_at
@dataclass
class ModelDownloadProgress:
"""Track overall download progress for a model."""
model_path: str
files: Dict[str, DownloadProgress] = field(default_factory=dict)
started_at: Optional[float] = None
completed_at: Optional[float] = None
def update_file(self, filename: str, downloaded: int, total: int):
"""Update progress for a specific file."""
if filename not in self.files:
self.files[filename] = DownloadProgress(
filename=filename,
started_at=time.time()
)
if self.started_at is None:
self.started_at = time.time()
file_progress = self.files[filename]
file_progress.downloaded_bytes = downloaded
file_progress.total_bytes = total
# Calculate speed
if file_progress.started_at:
elapsed = time.time() - file_progress.started_at
if elapsed > 0:
file_progress.speed_bytes_per_sec = downloaded / elapsed
# Mark as complete
if total > 0 and downloaded >= total:
file_progress.completed_at = time.time()
def complete_file(self, filename: str):
"""Mark a file as complete."""
if filename in self.files:
self.files[filename].completed_at = time.time()
@property
def total_bytes(self) -> int:
"""Get total bytes across all files."""
return sum(f.total_bytes for f in self.files.values())
@property
def downloaded_bytes(self) -> int:
"""Get downloaded bytes across all files."""
return sum(f.downloaded_bytes for f in self.files.values())
@property
def percentage(self) -> float:
"""Calculate overall download percentage."""
total = self.total_bytes
if total == 0:
# If no total yet, count completed files
if len(self.files) == 0:
return 0.0
completed = sum(1 for f in self.files.values() if f.is_complete)
return (completed / len(self.files)) * 100.0
return min(100.0, (self.downloaded_bytes / total) * 100.0)
@property
def is_complete(self) -> bool:
"""Check if all files are downloaded."""
if len(self.files) == 0:
return False
return all(f.is_complete for f in self.files.values())
@property
def speed_bytes_per_sec(self) -> float:
"""Get overall download speed."""
total_speed = sum(f.speed_bytes_per_sec for f in self.files.values() if f.started_at)
return total_speed
@property
def elapsed_time(self) -> float:
"""Get elapsed time in seconds."""
if self.started_at is None:
return 0.0
end_time = self.completed_at or time.time()
return end_time - self.started_at
def to_dict(self) -> Dict:
"""Convert to dictionary for JSON serialization."""
return {
"model_path": self.model_path,
"total_bytes": self.total_bytes,
"downloaded_bytes": self.downloaded_bytes,
"percentage": round(self.percentage, 2),
"speed_bytes_per_sec": round(self.speed_bytes_per_sec, 2),
"speed_mb_per_sec": round(self.speed_bytes_per_sec / (1024 * 1024), 2),
"elapsed_time": round(self.elapsed_time, 2),
"is_complete": self.is_complete,
"files_count": len(self.files),
"files_completed": sum(1 for f in self.files.values() if f.is_complete),
"files": {
name: {
"filename": f.filename,
"total_bytes": f.total_bytes,
"downloaded_bytes": f.downloaded_bytes,
"percentage": round(f.percentage, 2),
"speed_mb_per_sec": round(f.speed_bytes_per_sec / (1024 * 1024), 2),
"is_complete": f.is_complete
}
for name, f in self.files.items()
}
}
class ProgressTracker:
"""Thread-safe progress tracker for multiple models."""
def __init__(self):
self._progress: Dict[str, ModelDownloadProgress] = {}
self._lock = threading.Lock()
def get_or_create(self, model_path: str) -> ModelDownloadProgress:
"""Get or create progress tracker for a model."""
with self._lock:
if model_path not in self._progress:
self._progress[model_path] = ModelDownloadProgress(model_path=model_path)
return self._progress[model_path]
def get(self, model_path: str) -> Optional[ModelDownloadProgress]:
"""Get progress tracker for a model."""
with self._lock:
return self._progress.get(model_path)
def update(self, model_path: str, filename: str, downloaded: int, total: int):
"""Update download progress for a file."""
progress = self.get_or_create(model_path)
progress.update_file(filename, downloaded, total)
def complete_file(self, model_path: str, filename: str):
"""Mark a file as complete."""
progress = self.get(model_path)
if progress:
progress.complete_file(filename)
def complete_model(self, model_path: str):
"""Mark entire model download as complete."""
progress = self.get(model_path)
if progress:
progress.completed_at = time.time()
def get_all(self) -> Dict[str, Dict]:
"""Get all progress as dictionary."""
with self._lock:
return {
path: prog.to_dict()
for path, prog in self._progress.items()
}
def get_model_progress(self, model_path: str) -> Optional[Dict]:
"""Get progress for a specific model."""
progress = self.get(model_path)
if progress:
return progress.to_dict()
return None
# Global progress tracker instance
_global_tracker = ProgressTracker()
def get_progress_tracker() -> ProgressTracker:
"""Get global progress tracker instance."""
return _global_tracker
def create_progress_callback(model_path: str):
"""
Create a progress callback for huggingface_hub downloads.
Usage:
from huggingface_hub import snapshot_download
callback = create_progress_callback("Qwen/Qwen2.5-32B-Instruct")
snapshot_download(repo_id=model_path, resume_download=True,
tqdm_class=callback)
"""
tracker = get_progress_tracker()
class ProgressCallback:
"""Progress callback for tqdm."""
def __init__(self, *args, **kwargs):
# Store tqdm arguments but don't initialize yet
self.tqdm_args = args
self.tqdm_kwargs = kwargs
self.current_file = None
def __call__(self, *args, **kwargs):
# This will be called by huggingface_hub
# We'll intercept the progress updates
pass
def update(self, n: int = 1):
"""Update progress."""
if self.current_file:
# Get current progress from tqdm
if hasattr(self, 'n'):
downloaded = self.n
else:
downloaded = n
if hasattr(self, 'total'):
total = self.total
else:
total = 0
tracker.update(model_path, self.current_file, downloaded, total)
def set_description(self, desc: str):
"""Set description (filename)."""
# Extract filename from description
if desc:
self.current_file = desc.split()[-1] if ' ' in desc else desc
def close(self):
"""Close progress bar."""
if self.current_file:
tracker.complete_file(model_path, self.current_file)
return ProgressCallback
def create_hf_progress_callback(model_path: str):
"""
Create a progress callback compatible with huggingface_hub.
Returns a function that can be used with tqdm.
"""
tracker = get_progress_tracker()
current_file = [None] # Use list to allow modification in nested function
def progress_callback(tqdm_bar):
"""Progress callback function."""
if tqdm_bar.desc:
# Extract filename from description
filename = tqdm_bar.desc.split()[-1] if ' ' in tqdm_bar.desc else tqdm_bar.desc
if filename != current_file[0]:
current_file[0] = filename
if current_file[0] not in tracker.get_or_create(model_path).files:
tracker.get_or_create(model_path).files[current_file[0]] = DownloadProgress(
filename=current_file[0],
started_at=time.time()
)
if current_file[0]:
downloaded = getattr(tqdm_bar, 'n', 0)
total = getattr(tqdm_bar, 'total', 0)
tracker.update(model_path, current_file[0], downloaded, total)
return progress_callback
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