cleanup in view of docker builds

backend/src/constants.py

@@ -1,6 +1,6 @@
+import logging.config
 from pathlib import Path
 import os
-import logging
 
 PARAMETERS_DIR = Path('src/parameters')
 AMENITY_SELECTORS_PATH = PARAMETERS_DIR / 'amenity_selectors.yaml'
@@ -12,8 +12,15 @@ OPTIMIZER_PARAMETERS_PATH = PARAMETERS_DIR / 'optimizer_parameters.yaml'
 cache_dir_string = os.getenv('OSM_CACHE_DIR', './cache')
 OSM_CACHE_DIR = Path(cache_dir_string)
 
-logger = logging.getLogger(__name__)
-logging.basicConfig(
-    level = logging.INFO,
-    format = '%(asctime)s - %(name)s\t- %(levelname)s\t- %(message)s'
-)
+
+import logging
+import yaml
+
+LOGGING_CONFIG = Path('log_config.yaml')
+config = yaml.safe_load(LOGGING_CONFIG.read_text())
+
+logging.config.dictConfig(config)
+
+# if we are in a debug session, set the log level to debug
+if os.getenv('DEBUG', False):
+    logging.getLogger().setLevel(logging.DEBUG)