implement logger level checks from old PR datajoint#1044

Author: dimitri-yatsenko

datajoint/settings.py

@@ -246,6 +246,11 @@ def __setitem__(self, key, value):
                 self._conf[key] = value
             else:
                 raise DataJointError("Validator for {0:s} did not pass".format(key))
+            valid_logging_levels = {"DEBUG", "INFO", "WARNING", "ERROR", "CRITICAL"}
+            if key == "loglevel":
+                if value not in valid_logging_levels:
+                    raise ValueError(f"{'value'} is not a valid logging value")
+                logger.setLevel(value)
 
 
 # Load configuration from file
@@ -270,6 +275,7 @@ def __setitem__(self, key, value):
             "database.password",
             "external.aws_access_key_id",
             "external.aws_secret_access_key",
+            "loglevel",
         ),
         map(
             os.getenv,
@@ -279,6 +285,7 @@ def __setitem__(self, key, value):
                 "DJ_PASS",
                 "DJ_AWS_ACCESS_KEY_ID",
                 "DJ_AWS_SECRET_ACCESS_KEY",
+                "DJ_LOG_LEVEL",
             ),
         ),
     )