Fix refactoring error in snmp switch (#119028)

homeassistant/components/snmp/switch.py

@@ -8,6 +8,8 @@ from typing import Any
 import pysnmp.hlapi.asyncio as hlapi
 from pysnmp.hlapi.asyncio import (
     CommunityData,
+    ObjectIdentity,
+    ObjectType,
     UdpTransportTarget,
     UsmUserData,
     getCmd,
@@ -63,7 +65,12 @@ from .const import (
     MAP_PRIV_PROTOCOLS,
     SNMP_VERSIONS,
 )
-from .util import RequestArgsType, async_create_request_cmd_args
+from .util import (
+    CommandArgsType,
+    RequestArgsType,
+    async_create_command_cmd_args,
+    async_create_request_cmd_args,
+)
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -125,23 +132,23 @@ async def async_setup_platform(
     discovery_info: DiscoveryInfoType | None = None,
 ) -> None:
     """Set up the SNMP switch."""
-    name = config.get(CONF_NAME)
+    name: str = config[CONF_NAME]
-    host = config.get(CONF_HOST)
+    host: str = config[CONF_HOST]
-    port = config.get(CONF_PORT)
+    port: int = config[CONF_PORT]
     community = config.get(CONF_COMMUNITY)
     baseoid: str = config[CONF_BASEOID]
-    command_oid = config.get(CONF_COMMAND_OID)
+    command_oid: str | None = config.get(CONF_COMMAND_OID)
-    command_payload_on = config.get(CONF_COMMAND_PAYLOAD_ON)
+    command_payload_on: str | None = config.get(CONF_COMMAND_PAYLOAD_ON)
-    command_payload_off = config.get(CONF_COMMAND_PAYLOAD_OFF)
+    command_payload_off: str | None = config.get(CONF_COMMAND_PAYLOAD_OFF)
     version: str = config[CONF_VERSION]
     username = config.get(CONF_USERNAME)
     authkey = config.get(CONF_AUTH_KEY)
     authproto: str = config[CONF_AUTH_PROTOCOL]
     privkey = config.get(CONF_PRIV_KEY)
     privproto: str = config[CONF_PRIV_PROTOCOL]
-    payload_on = config.get(CONF_PAYLOAD_ON)
+    payload_on: str = config[CONF_PAYLOAD_ON]
-    payload_off = config.get(CONF_PAYLOAD_OFF)
+    payload_off: str = config[CONF_PAYLOAD_OFF]
-    vartype = config.get(CONF_VARTYPE)
+    vartype: str = config[CONF_VARTYPE]
 
     if version == "3":
         if not authkey:
@@ -159,9 +166,11 @@ async def async_setup_platform(
     else:
         auth_data = CommunityData(community, mpModel=SNMP_VERSIONS[version])
 
+    transport = UdpTransportTarget((host, port))
     request_args = await async_create_request_cmd_args(
-        hass, auth_data, UdpTransportTarget((host, port)), baseoid
+        hass, auth_data, transport, baseoid
     )
+    command_args = await async_create_command_cmd_args(hass, auth_data, transport)
 
     async_add_entities(
         [
@@ -177,6 +186,7 @@ async def async_setup_platform(
                 command_payload_off,
                 vartype,
                 request_args,
+                command_args,
             )
         ],
         True,
@@ -188,21 +198,22 @@ class SnmpSwitch(SwitchEntity):
 
     def __init__(
         self,
-        name,
+        name: str,
-        host,
+        host: str,
-        port,
+        port: int,
-        baseoid,
+        baseoid: str,
-        commandoid,
+        commandoid: str | None,
-        payload_on,
+        payload_on: str,
-        payload_off,
+        payload_off: str,
-        command_payload_on,
+        command_payload_on: str | None,
-        command_payload_off,
+        command_payload_off: str | None,
-        vartype,
+        vartype: str,
-        request_args,
+        request_args: RequestArgsType,
+        command_args: CommandArgsType,
     ) -> None:
         """Initialize the switch."""
 
-        self._name = name
+        self._attr_name = name
         self._baseoid = baseoid
         self._vartype = vartype
 
@@ -215,7 +226,8 @@ class SnmpSwitch(SwitchEntity):
         self._payload_on = payload_on
         self._payload_off = payload_off
         self._target = UdpTransportTarget((host, port))
-        self._request_args: RequestArgsType = request_args
+        self._request_args = request_args
+        self._command_args = command_args
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on the switch."""
@@ -226,7 +238,7 @@ class SnmpSwitch(SwitchEntity):
         """Turn off the switch."""
         await self._execute_command(self._command_payload_off)
 
-    async def _execute_command(self, command):
+    async def _execute_command(self, command: str) -> None:
         # User did not set vartype and command is not a digit
         if self._vartype == "none" and not self._command_payload_on.isdigit():
             await self._set(command)
@@ -265,14 +277,12 @@ class SnmpSwitch(SwitchEntity):
                     self._state = None
 
     @property
-    def name(self):
+    def is_on(self) -> bool | None:
-        """Return the switch's name."""
-        return self._name
-
-    @property
-    def is_on(self):
         """Return true if switch is on; False if off. None if unknown."""
         return self._state
 
-    async def _set(self, value):
+    async def _set(self, value: Any) -> None:
-        await setCmd(*self._request_args, value)
+        """Set the state of the switch."""
+        await setCmd(
+            *self._command_args, ObjectType(ObjectIdentity(self._commandoid), value)
+        )

homeassistant/components/snmp/util.py

@@ -25,6 +25,14 @@ DATA_SNMP_ENGINE = "snmp_engine"
 
 _LOGGER = logging.getLogger(__name__)
 
+type CommandArgsType = tuple[
+    SnmpEngine,
+    UsmUserData | CommunityData,
+    UdpTransportTarget | Udp6TransportTarget,
+    ContextData,
+]
+
+
 type RequestArgsType = tuple[
     SnmpEngine,
     UsmUserData | CommunityData,
@@ -34,20 +42,34 @@ type RequestArgsType = tuple[
 ]
 
 
+async def async_create_command_cmd_args(
+    hass: HomeAssistant,
+    auth_data: UsmUserData | CommunityData,
+    target: UdpTransportTarget | Udp6TransportTarget,
+) -> CommandArgsType:
+    """Create command arguments.
+
+    The ObjectType needs to be created dynamically by the caller.
+    """
+    engine = await async_get_snmp_engine(hass)
+    return (engine, auth_data, target, ContextData())
+
+
 async def async_create_request_cmd_args(
     hass: HomeAssistant,
     auth_data: UsmUserData | CommunityData,
     target: UdpTransportTarget | Udp6TransportTarget,
     object_id: str,
 ) -> RequestArgsType:
-    """Create request arguments."""
+    """Create request arguments.
-    return (
+
-        await async_get_snmp_engine(hass),
+    The same ObjectType is used for all requests.
-        auth_data,
+    """
-        target,
+    engine, auth_data, target, context_data = await async_create_command_cmd_args(
-        ContextData(),
+        hass, auth_data, target
-        ObjectType(ObjectIdentity(object_id)),
     )
+    object_type = ObjectType(ObjectIdentity(object_id))
+    return (engine, auth_data, target, context_data, object_type)
 
 
 @singleton(DATA_SNMP_ENGINE)