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51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
"""Centralized logging configuration for the book downloader application."""
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import logging
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import sys
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from logging.handlers import RotatingFileHandler
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from config import FLASK_DEBUG
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def setup_logger(name: str, log_file: str = None) -> logging.Logger:
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"""Set up and configure a logger instance.
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Args:
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name: The name of the logger instance
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log_file: Optional path to log file. If None, logs only to stdout/stderr
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Returns:
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logging.Logger: Configured logger instance
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"""
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logger = logging.getLogger(name)
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logger.setLevel(logging.INFO)
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formatter = logging.Formatter(
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'%(asctime)s - %(name)s - %(levelname)s - %(message)s'
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)
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# Console handler for Docker output
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console_handler = logging.StreamHandler(sys.stdout)
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console_handler.setFormatter(formatter)
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if FLASK_DEBUG:
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console_handler.setLevel(logging.DEBUG)
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else:
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console_handler.setLevel(logging.INFO)
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console_handler.addFilter(lambda record: record.levelno < logging.ERROR) # Only allow logs below ERROR
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logger.addHandler(console_handler)
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# Error handler for stderr
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error_handler = logging.StreamHandler(sys.stderr)
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error_handler.setLevel(logging.ERROR)
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error_handler.setFormatter(formatter)
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logger.addHandler(error_handler)
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# File handler if log file is specified
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if log_file:
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file_handler = RotatingFileHandler(
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log_file,
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maxBytes=10485760, # 10MB
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backupCount=5
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)
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file_handler.setFormatter(formatter)
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logger.addHandler(file_handler)
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return logger |