feat :add log

backend/core/logger.py

@@ -0,0 +1,50 @@
+import logging
+import os
+from logging.handlers import RotatingFileHandler
+from dotenv import load_dotenv
+
+load_dotenv()
+
+LOG_ENABLED = os.getenv('LOG_ENABLED', 'true').lower() == 'true'
+LOG_LEVEL = getattr(logging, os.getenv('LOG_LEVEL', 'DEBUG').upper(), logging.DEBUG)
+
+os.makedirs('logs', exist_ok=True)
+
+FORMATTER = logging.Formatter(
+    '%(asctime)s | %(levelname)s | %(name)s | %(message)s',
+    datefmt='%Y-%m-%d %H:%M:%S'
+)
+
+def _file_handler(filename: str, level: int) -> RotatingFileHandler:
+    handler = RotatingFileHandler(
+        f'logs/{filename}',
+        maxBytes=5 * 1024 * 1024,
+        backupCount=3,
+        encoding='utf-8'
+    )
+    handler.setLevel(level)
+    handler.setFormatter(FORMATTER)
+    return handler
+
+def _console_handler() -> logging.StreamHandler:
+    handler = logging.StreamHandler()
+    handler.setLevel(logging.INFO)
+    handler.setFormatter(FORMATTER)
+    return handler
+
+def get_logger(name: str) -> logging.Logger:
+    logger = logging.getLogger(name)
+
+    if logger.handlers:
+        return logger
+
+    if not LOG_ENABLED:
+        logger.addHandler(logging.NullHandler())
+        return logger
+
+    logger.setLevel(LOG_LEVEL)
+    logger.addHandler(_file_handler('app.log', LOG_LEVEL))
+    logger.addHandler(_file_handler('error.log', logging.ERROR))
+    logger.addHandler(_console_handler())
+
+    return logger