Use dataclass for UsbServiceInfo (#60140)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/usb/__init__.py

@@ -6,7 +6,7 @@ import fnmatch
 import logging
 import os
 import sys
-from typing import TypedDict
+from typing import Any
 
 from serial.tools.list_ports import comports
 from serial.tools.list_ports_common import ListPortInfo
@@ -17,8 +17,10 @@ from homeassistant.components import websocket_api
 from homeassistant.components.websocket_api.connection import ActiveConnection
 from homeassistant.const import EVENT_HOMEASSISTANT_STARTED, EVENT_HOMEASSISTANT_STOP
 from homeassistant.core import Event, HomeAssistant, callback
+from homeassistant.data_entry_flow import BaseServiceInfo
 from homeassistant.helpers import discovery_flow, system_info
 from homeassistant.helpers.debounce import Debouncer
+from homeassistant.helpers.frame import report
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.loader import async_get_usb
 
@@ -31,7 +33,8 @@ _LOGGER = logging.getLogger(__name__)
 REQUEST_SCAN_COOLDOWN = 60  # 1 minute cooldown
 
 
-class UsbServiceInfo(TypedDict):
+@dataclasses.dataclass
+class UsbServiceInfo(BaseServiceInfo):
     """Prepared info from usb entries."""
 
     device: str
@@ -41,6 +44,25 @@ class UsbServiceInfo(TypedDict):
     manufacturer: str | None
     description: str | None
 
+    # Used to prevent log flooding. To be removed in 2022.6
+    _warning_logged: bool = False
+
+    def __getitem__(self, name: str) -> Any:
+        """
+        Allow property access by name for compatibility reason.
+
+        Deprecated, and will be removed in version 2022.6.
+        """
+        if not self._warning_logged:
+            report(
+                f"accessed discovery_info['{name}'] instead of discovery_info.{name}; this will fail in version 2022.6",
+                exclude_integrations={"usb"},
+                error_if_core=False,
+                level=logging.DEBUG,
+            )
+            self._warning_logged = True
+        return getattr(self, name)
+
 
 def human_readable_device_name(
     device: str,