Implement get_value method in BaseStorage and remove redundant implementations

aiogram/fsm/storage/base.py

@@ -167,10 +167,11 @@ class BaseStorage(ABC):
         """
         pass
 
-    @abstractmethod
     async def get_value(
         self, storage_key: StorageKey, dict_key: str, default: Optional[Any] = None
-    ) -> Optional[Any]: ...
+    ) -> Optional[Any]:
+        data = await self.get_data(storage_key)
+        return data.get(dict_key, default)
 
     async def update_data(self, key: StorageKey, data: Dict[str, Any]) -> Dict[str, Any]:
         """

aiogram/fsm/storage/mongo.py

@@ -1,4 +1,4 @@
-from typing import Any, Dict, Optional, cast, overload
+from typing import Any, Dict, Optional, cast
 
 from motor.motor_asyncio import AsyncIOMotorClient
 
@@ -115,18 +115,6 @@ class MongoStorage(BaseStorage):
             return {}
         return cast(Dict[str, Any], document["data"])
 
-    @overload
-    async def get_value(self, storage_key: StorageKey, dict_key: str) -> Optional[Any]: ...
-
-    @overload
-    async def get_value(self, storage_key: StorageKey, dict_key: str, default: Any) -> Any: ...
-
-    async def get_value(
-        self, storage_key: StorageKey, dict_key: str, default: Optional[Any] = None
-    ) -> Optional[Any]:
-        data = await self.get_data(storage_key)
-        return data.get(dict_key, default)
-
     async def update_data(self, key: StorageKey, data: Dict[str, Any]) -> Dict[str, Any]:
         document_id = self._key_builder.build(key)
         update_with = {f"data.{key}": value for key, value in data.items()}

aiogram/fsm/storage/redis.py

@@ -1,13 +1,12 @@
 import json
 from contextlib import asynccontextmanager
-from typing import Any, AsyncGenerator, Callable, Dict, Optional, cast, overload
+from typing import Any, AsyncGenerator, Callable, Dict, Optional, cast
 
 from redis.asyncio.client import Redis
 from redis.asyncio.connection import ConnectionPool
 from redis.asyncio.lock import Lock
 from redis.typing import ExpiryT
 
-from aiogram.fsm import storage
 from aiogram.fsm.state import State
 from aiogram.fsm.storage.base import (
     BaseEventIsolation,
@@ -128,22 +127,6 @@ class RedisStorage(BaseStorage):
             value = value.decode("utf-8")
         return cast(Dict[str, Any], self.json_loads(value))
 
-    @overload
-    async def get_value(
-        self,
-        storage_key: StorageKey,
-        dict_key: str,
-    ) -> Optional[Any]: ...
-
-    @overload
-    async def get_value(self, storage_key: StorageKey, dict_key: str, default: Any) -> Any: ...
-
-    async def get_value(
-        self, storage_key: StorageKey, dict_key: str, default: Optional[Any] = None
-    ) -> Optional[Any]:
-        data = await self.get_data(storage_key)
-        return data.get(dict_key, default)
-
 
 class RedisEventIsolation(BaseEventIsolation):
     def __init__(