99 lines
No EOL
3.4 KiB
Python
99 lines
No EOL
3.4 KiB
Python
"""
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WatchService - сервис отслеживания файлов с очередью
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"""
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import time
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import threading
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import queue
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from pathlib import Path
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from typing import Callable, Optional
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from watchdog.observers import Observer
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from watchdog.events import FileSystemEventHandler
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from services.file_service import FileService
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class PhotoHandler(FileSystemEventHandler):
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"""Обработчик событий файловой системы"""
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def __init__(self, callback: Callable[[Path], None]):
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self.callback = callback
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self._pending_files = queue.Queue()
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self._processing = True
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self._processor_thread = threading.Thread(target=self._process_queue, daemon=True)
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self._processor_thread.start()
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def on_created(self, event):
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if not event.is_directory:
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src_path = Path(event.src_path)
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if FileService.is_photo(src_path):
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time.sleep(0.1) # Даём время на запись файла
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self._pending_files.put(src_path)
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def _process_queue(self):
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while self._processing:
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try:
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file_path = self._pending_files.get(timeout=1)
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if self.callback and file_path.exists():
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self.callback(file_path)
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except queue.Empty:
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continue
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except Exception as e:
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print(f"Ошибка обработки файла: {e}")
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def stop(self):
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self._processing = False
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class WatchService:
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"""Сервис для отслеживания папки на новые файлы"""
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def __init__(self):
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self._observer: Optional[Observer] = None
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self._event_handler: Optional[PhotoHandler] = None
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self._is_running = False
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def start(self, watch_folder: Path, on_new_file: Callable[[Path], None]) -> bool:
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if self._is_running:
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return False
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if not watch_folder.exists():
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return False
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try:
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self._event_handler = PhotoHandler(on_new_file)
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self._observer = Observer()
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self._observer.schedule(self._event_handler, str(watch_folder), recursive=False)
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self._observer.start()
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self._is_running = True
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return True
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except Exception as e:
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print(f"Ошибка запуска отслеживания: {e}")
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return False
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def stop(self):
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if self._observer:
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self._observer.stop()
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self._observer.join()
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self._observer = None
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if self._event_handler:
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self._event_handler.stop()
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self._event_handler = None
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self._is_running = False
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def is_running(self) -> bool:
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return self._is_running
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def move_all_existing_files(self, watch_folder: Path, on_file_moved: Callable[[Path], None]) -> int:
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"""Перемещает все существующие файлы"""
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count = 0
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if watch_folder.exists():
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for file_path in watch_folder.iterdir():
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if file_path.is_file() and FileService.is_photo(file_path):
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try:
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on_file_moved(file_path)
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count += 1
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time.sleep(0.05)
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except Exception as e:
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print(f"Ошибка перемещения {file_path.name}: {e}")
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return count |