Use logging-config instead of basicConfig (#476)

nomenclature/__init__.py

@@ -1,7 +1,7 @@
 import logging
 from importlib.metadata import version
 from pathlib import Path
-
+import json
 import yaml
 
 from nomenclature.cli import cli  # noqa
@@ -13,12 +13,12 @@
 from nomenclature.processor import RegionAggregationMapping  # noqa
 from nomenclature.processor import RegionProcessor, RequiredDataValidator  # noqa
 
+
+here = Path(__file__).parent
+
 # set up logging
-logging.basicConfig(
-    format="%(asctime)s %(levelname)-8s %(message)s",
-    datefmt="%Y-%m-%d %H:%M:%S",
-    level=logging.INFO,
-)
+with open(here / "logging.json") as file:
+    logging.config.dictConfig(json.load(file))
 
 logger = logging.getLogger(__name__)
 

nomenclature/logging.json

@@ -0,0 +1,25 @@
+{
+  "version": 1,
+  "disable_existing_loggers": false,
+  "formatters": {
+    "generic": {
+      "format": "[%(levelname)s] %(asctime)s - %(name)s: %(message)s",
+      "datefmt": "%H:%M:%S"
+    }
+  },
+  "loggers": {
+    "nomenclature": {
+      "level": "INFO",
+      "handlers": [
+        "console"
+      ]
+    }
+  },
+  "handlers": {
+    "console": {
+      "class": "logging.StreamHandler",
+      "level": "NOTSET",
+      "formatter": "generic"
+    }
+  }
+}