Implement multi-wsgi app setup to offer endpoint-per-dataset strategy

pygeoapi/config.py

@@ -41,25 +41,30 @@
 LOGGER = logging.getLogger(__name__)
 
 
-def get_config(raw: bool = False) -> dict:
+def get_config(config_path: str = None, raw: bool = False) -> dict:
     """
     Get pygeoapi configurations
 
+    :param config_path: `str` of configuration file location, if `None`
+                            will attempt to read from `PYGEOAPI_CONFIG`
     :param raw: `bool` over interpolation during config loading
 
     :returns: `dict` of pygeoapi configuration
     """
 
-    if not os.environ.get('PYGEOAPI_CONFIG'):
-        raise RuntimeError('PYGEOAPI_CONFIG environment variable not set')
+    if config_path is None:
+        config_path = os.environ.get('PYGEOAPI_CONFIG')
 
-    with open(os.environ.get('PYGEOAPI_CONFIG'), encoding='utf8') as fh:
+    if config_path is None:
+        raise KeyError('PYGEOAPI_CONFIG environment variable not set')
+
+    with open(config_path, encoding='utf8') as fh:
         if raw:
-            CONFIG = yaml.safe_load(fh)
+            config = yaml.safe_load(fh)
         else:
-            CONFIG = yaml_load(fh)
+            config = yaml_load(fh)
 
-    return CONFIG
+    return config
 
 
 def load_schema() -> dict: