Various improvements

- improved RuntimeConfig initialization process (excluded the possibility of side effects)
- added the ability to use custom http_client to ConfigServerSrc

Author: aleksey925

src/runtime_config/runtime_config.py

@@ -23,7 +23,7 @@
 
 class RuntimeConfig:
     def __init__(self, init_settings: SettingsType, source: BaseSource, refresh_interval: float) -> None:
-        self._init_settings: SettingsType = init_settings
+        self._init_settings: SettingsType = copy.deepcopy(init_settings)
         self._settings: SettingsType = {}
 
         self._source = source
@@ -32,7 +32,9 @@ def __init__(self, init_settings: SettingsType, source: BaseSource, refresh_inte
 
     @staticmethod
     async def create(
-        init_settings: t.Dict[str, t.Any], source: BaseSource | None = None, refresh_interval: float = 10
+        init_settings: t.Dict[str, t.Any],
+        source: BaseSource | None = None,
+        refresh_interval: float = 10,
     ) -> RuntimeConfig:
         """
         Creates and initializes an instance of the class. You should always use this method to instantiate a class.

src/runtime_config/sources/config_server.py

@@ -15,17 +15,15 @@
 
 logger = getLogger(__name__)
 
-SettingsType = t.Dict[str, t.Any]
-
 
 class ConfigServerSrc(BaseSource):
     """
     Source that allows you to get settings from the runtime-config server.
     """
 
-    def __init__(self, host: str, service_name: str) -> None:
+    def __init__(self, host: str, service_name: str, http_client: aiohttp.ClientSession = None) -> None:
         self._url = self._build_url(host=host, service_name=service_name)
-        self._http_client = aiohttp.ClientSession()
+        self._http_client = http_client or aiohttp.ClientSession()
 
     def _build_url(self, host: str, service_name: str) -> str:
         parsed_url = urlparse(host)