add singleton design pattern

app/utils.py

@@ -1,21 +1,18 @@
-import logging
+from threading import Lock
-from functools import lru_cache
-
-from rich.console import Console
-from rich.logging import RichHandler
-
-console = Console(color_system="256", width=200, style="blue")
 
 
-@lru_cache
+class SingletonMeta(type):
-def get_logger(module_name):
+    """
-    logger = logging.getLogger(module_name)
+    This is a thread-safe implementation of Singleton.
-    handler = RichHandler(
+    """
-        rich_tracebacks=True, console=console, tracebacks_show_locals=True
+
-    )
+    _instances = {}
-    handler.setFormatter(
+
-        logging.Formatter("[ %(threadName)s:%(funcName)s:%(lineno)d ] - %(message)s")
+    _lock: Lock = Lock()
-    )
+
-    logger.addHandler(handler)
+    def __call__(cls, *args, **kwargs):
-    logger.setLevel(logging.DEBUG)
+        with cls._lock:
-    return logger
+            if cls not in cls._instances:
+                instance = super().__call__(*args, **kwargs)
+                cls._instances[cls] = instance
+        return cls._instances[cls]