36 lines
1.2 KiB
Python
36 lines
1.2 KiB
Python
# core/logger_helper.py
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import logging
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from logging.handlers import RotatingFileHandler
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from pathlib import Path
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def setup_logger(log_folder: Path, log_file_name: str = "conversion.log", level=logging.INFO) -> logging.Logger:
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"""
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Sets up a logger that prints to console and writes to a rotating log file.
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"""
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log_folder.mkdir(parents=True, exist_ok=True)
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log_file = log_folder / log_file_name
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logger = logging.getLogger("conversion_logger")
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logger.setLevel(level)
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logger.propagate = False # Prevent duplicate logging if root logger exists
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# Formatter with timestamp
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formatter = logging.Formatter("%(asctime)s [%(levelname)s] %(message)s", datefmt="%Y-%m-%d %H:%M:%S")
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# Console handler
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console_handler = logging.StreamHandler()
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console_handler.setFormatter(formatter)
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console_handler.setLevel(level)
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# File handler with rotation (max 5 MB per file, keep 3 backups)
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file_handler = RotatingFileHandler(log_file, maxBytes=5*1024*1024, backupCount=3, encoding="utf-8")
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file_handler.setFormatter(formatter)
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file_handler.setLevel(level)
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# Add handlers
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if not logger.handlers:
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logger.addHandler(console_handler)
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logger.addHandler(file_handler)
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return logger
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