Fix duplicate alert log

Author: fealone

src/monitapi/libs/logging.py

@@ -1,25 +1,38 @@
 import logging
 import sys
 
-alert_logger = logging.getLogger("monitapi.alert")
-standard_logger = logging.getLogger("monitapi")
+alert_logger = None
+standard_logger = None
 
-for logger in (alert_logger, standard_logger):
-    for handler in logger.handlers:
-        logger.removeHandler(handler)
+
+def get_alert_logger() -> logging.Logger:
+    global alert_logger
+    if alert_logger is None:
+        alert_logger = logging.getLogger("monitapi.alert")
+    for handler in alert_logger.handlers:
+        alert_logger.removeHandler(handler)
 
     handler = logging.StreamHandler(sys.stderr)
 
     FORMAT = '%(asctime)s %(levelname)s [%(name)s] [%(threadName)s] %(message)s'
     handler.setFormatter(logging.Formatter(FORMAT))
-    logger.addHandler(handler)
-
-standard_logger.setLevel(logging.INFO)
-
-
-def get_alert_logger() -> logging.Logger:
+    alert_logger.addHandler(handler)
+    alert_logger.propagate = False
     return alert_logger
 
 
 def get_logger() -> logging.Logger:
+    global standard_logger
+    if standard_logger is None:
+        standard_logger = logging.getLogger("monitapi")
+    for handler in standard_logger.handlers:
+        standard_logger.removeHandler(handler)
+
+    handler = logging.StreamHandler(sys.stderr)
+
+    FORMAT = '%(asctime)s %(levelname)s [%(name)s] [%(threadName)s] %(message)s'
+    handler.setFormatter(logging.Formatter(FORMAT))
+    standard_logger.addHandler(handler)
+    standard_logger.setLevel(logging.INFO)
+    standard_logger.propagate = False
     return standard_logger