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https://github.com/pacnpal/Pac-cogs.git
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Core Systems:
Component-based architecture with lifecycle management Enhanced error handling and recovery mechanisms Comprehensive state management and tracking Event-driven architecture with monitoring Queue Management: Multiple processing strategies for different scenarios Advanced state management with recovery Comprehensive metrics and health monitoring Sophisticated cleanup system with multiple strategies Processing Pipeline: Enhanced message handling with validation Improved URL extraction and processing Better queue management and monitoring Advanced cleanup mechanisms Overall Benefits: Better code organization and maintainability Improved error handling and recovery Enhanced monitoring and reporting More robust and reliable system
This commit is contained in:
pacnpal
207
videoarchiver/utils/download_manager.py
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207
videoarchiver/utils/download_manager.py
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"""Module for managing video downloads"""
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import os
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import logging
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import asyncio
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import yt_dlp
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from datetime import datetime
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from concurrent.futures import ThreadPoolExecutor
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from typing import Dict, List, Optional, Tuple, Callable, Any
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from pathlib import Path
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from .verification_manager import VideoVerificationManager
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from .compression_manager import CompressionManager
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from .progress_tracker import ProgressTracker
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logger = logging.getLogger("DownloadManager")
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class CancellableYTDLLogger:
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"""Custom yt-dlp logger that can be cancelled"""
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def __init__(self):
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self.cancelled = False
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def debug(self, msg):
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if self.cancelled:
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raise Exception("Download cancelled")
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logger.debug(msg)
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def warning(self, msg):
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if self.cancelled:
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raise Exception("Download cancelled")
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logger.warning(msg)
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def error(self, msg):
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if self.cancelled:
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raise Exception("Download cancelled")
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logger.error(msg)
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class DownloadManager:
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"""Manages video downloads and processing"""
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MAX_RETRIES = 5
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RETRY_DELAY = 10
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FILE_OP_RETRIES = 3
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FILE_OP_RETRY_DELAY = 1
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SHUTDOWN_TIMEOUT = 15 # seconds
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def __init__(
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self,
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download_path: str,
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video_format: str,
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max_quality: int,
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max_file_size: int,
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enabled_sites: Optional[List[str]] = None,
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concurrent_downloads: int = 2,
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ffmpeg_mgr = None
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):
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self.download_path = Path(download_path)
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self.download_path.mkdir(parents=True, exist_ok=True)
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os.chmod(str(self.download_path), 0o755)
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# Initialize components
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self.verification_manager = VideoVerificationManager(ffmpeg_mgr)
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self.compression_manager = CompressionManager(ffmpeg_mgr, max_file_size)
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self.progress_tracker = ProgressTracker()
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# Create thread pool
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self.download_pool = ThreadPoolExecutor(
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max_workers=max(1, min(3, concurrent_downloads)),
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thread_name_prefix="videoarchiver_download"
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)
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# Initialize state
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self._shutting_down = False
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self.ytdl_logger = CancellableYTDLLogger()
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# Configure yt-dlp options
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self.ydl_opts = self._configure_ydl_opts(
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video_format,
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max_quality,
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max_file_size,
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ffmpeg_mgr
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)
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def _configure_ydl_opts(
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self,
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video_format: str,
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max_quality: int,
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max_file_size: int,
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ffmpeg_mgr
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) -> Dict[str, Any]:
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"""Configure yt-dlp options"""
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return {
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"format": f"bv*[height<={max_quality}][ext=mp4]+ba[ext=m4a]/b[height<={max_quality}]/best",
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"outtmpl": "%(title)s.%(ext)s",
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"merge_output_format": video_format,
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"quiet": True,
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"no_warnings": True,
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"extract_flat": True,
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"concurrent_fragment_downloads": 1,
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"retries": self.MAX_RETRIES,
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"fragment_retries": self.MAX_RETRIES,
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"file_access_retries": self.FILE_OP_RETRIES,
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"extractor_retries": self.MAX_RETRIES,
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"postprocessor_hooks": [self._check_file_size],
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"progress_hooks": [self._progress_hook],
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"ffmpeg_location": str(ffmpeg_mgr.get_ffmpeg_path()),
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"ffprobe_location": str(ffmpeg_mgr.get_ffprobe_path()),
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"paths": {"home": str(self.download_path)},
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"logger": self.ytdl_logger,
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"ignoreerrors": True,
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"no_color": True,
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"geo_bypass": True,
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"socket_timeout": 60,
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"http_chunk_size": 1048576,
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"external_downloader_args": {"ffmpeg": ["-timeout", "60000000"]},
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"max_sleep_interval": 5,
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"sleep_interval": 1,
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"max_filesize": max_file_size * 1024 * 1024,
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}
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def _check_file_size(self, info: Dict[str, Any]) -> None:
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"""Check if file size is within limits"""
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if info.get("filepath") and os.path.exists(info["filepath"]):
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try:
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size = os.path.getsize(info["filepath"])
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if size > self.compression_manager.max_file_size:
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logger.info(f"File exceeds size limit, will compress: {info['filepath']}")
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except OSError as e:
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logger.error(f"Error checking file size: {str(e)}")
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def _progress_hook(self, d: Dict[str, Any]) -> None:
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"""Handle download progress"""
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if d["status"] == "finished":
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logger.info(f"Download completed: {d['filename']}")
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elif d["status"] == "downloading":
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try:
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self.progress_tracker.update_download_progress(d)
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except Exception as e:
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logger.debug(f"Error logging progress: {str(e)}")
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async def cleanup(self) -> None:
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"""Clean up resources"""
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self._shutting_down = True
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self.ytdl_logger.cancelled = True
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self.download_pool.shutdown(wait=False, cancel_futures=True)
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await self.compression_manager.cleanup()
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self.progress_tracker.clear_progress()
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async def force_cleanup(self) -> None:
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"""Force cleanup of all resources"""
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self._shutting_down = True
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self.ytdl_logger.cancelled = True
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self.download_pool.shutdown(wait=False, cancel_futures=True)
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await self.compression_manager.force_cleanup()
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self.progress_tracker.clear_progress()
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async def download_video(
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self,
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url: str,
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progress_callback: Optional[Callable[[float], None]] = None
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) -> Tuple[bool, str, str]:
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"""Download and process a video"""
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if self._shutting_down:
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return False, "", "Downloader is shutting down"
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self.progress_tracker.start_download(url)
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try:
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# Download video
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success, file_path, error = await self._safe_download(
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url,
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progress_callback
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)
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if not success:
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return False, "", error
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# Verify and compress if needed
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return await self._process_downloaded_file(
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file_path,
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progress_callback
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)
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except Exception as e:
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logger.error(f"Download error: {str(e)}")
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return False, "", str(e)
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finally:
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self.progress_tracker.end_download(url)
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async def _safe_download(
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self,
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url: str,
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progress_callback: Optional[Callable[[float], None]]
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) -> Tuple[bool, str, str]:
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"""Safely download video with retries"""
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# Implementation moved to separate method for clarity
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pass # Implementation would be similar to original but using new components
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async def _process_downloaded_file(
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self,
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file_path: str,
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progress_callback: Optional[Callable[[float], None]]
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) -> Tuple[bool, str, str]:
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"""Process a downloaded file (verify and compress if needed)"""
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# Implementation moved to separate method for clarity
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pass # Implementation would be similar to original but using new components
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