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https://github.com/home-assistant/core
synced 2024-09-03 08:14:07 +02:00
Reconfigure MQTT switch component if discovery info is changed (#18179)
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@ -5,7 +5,6 @@ For more details about this platform, please refer to the documentation at
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https://home-assistant.io/components/switch.mqtt/
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"""
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import logging
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from typing import Optional
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import voluptuous as vol
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@ -14,7 +13,7 @@ from homeassistant.components.mqtt import (
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ATTR_DISCOVERY_HASH, CONF_STATE_TOPIC, CONF_COMMAND_TOPIC,
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CONF_AVAILABILITY_TOPIC, CONF_PAYLOAD_AVAILABLE,
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CONF_PAYLOAD_NOT_AVAILABLE, CONF_QOS, CONF_RETAIN, MqttAvailability,
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MqttDiscoveryUpdate, MqttEntityDeviceInfo)
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MqttDiscoveryUpdate, MqttEntityDeviceInfo, subscription)
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from homeassistant.components.mqtt.discovery import MQTT_DISCOVERY_NEW
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from homeassistant.components.switch import SwitchDevice
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from homeassistant.const import (
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@ -54,7 +53,7 @@ PLATFORM_SCHEMA = mqtt.MQTT_RW_PLATFORM_SCHEMA.extend({
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async def async_setup_platform(hass: HomeAssistantType, config: ConfigType,
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async_add_entities, discovery_info=None):
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"""Set up MQTT switch through configuration.yaml."""
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await _async_setup_entity(hass, config, async_add_entities,
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await _async_setup_entity(config, async_add_entities,
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discovery_info)
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@ -63,7 +62,7 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
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async def async_discover(discovery_payload):
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"""Discover and add a MQTT switch."""
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config = PLATFORM_SCHEMA(discovery_payload)
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await _async_setup_entity(hass, config, async_add_entities,
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await _async_setup_entity(config, async_add_entities,
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discovery_payload[ATTR_DISCOVERY_HASH])
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async_dispatcher_connect(
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@ -71,35 +70,10 @@ async def async_setup_entry(hass, config_entry, async_add_entities):
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async_discover)
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async def _async_setup_entity(hass, config, async_add_entities,
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async def _async_setup_entity(config, async_add_entities,
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discovery_hash=None):
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"""Set up the MQTT switch."""
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value_template = config.get(CONF_VALUE_TEMPLATE)
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if value_template is not None:
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value_template.hass = hass
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newswitch = MqttSwitch(
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config.get(CONF_NAME),
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config.get(CONF_ICON),
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config.get(CONF_STATE_TOPIC),
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config.get(CONF_COMMAND_TOPIC),
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config.get(CONF_AVAILABILITY_TOPIC),
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config.get(CONF_QOS),
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config.get(CONF_RETAIN),
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config.get(CONF_PAYLOAD_ON),
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config.get(CONF_PAYLOAD_OFF),
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config.get(CONF_STATE_ON),
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config.get(CONF_STATE_OFF),
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config.get(CONF_OPTIMISTIC),
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config.get(CONF_PAYLOAD_AVAILABLE),
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config.get(CONF_PAYLOAD_NOT_AVAILABLE),
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config.get(CONF_UNIQUE_ID),
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value_template,
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config.get(CONF_DEVICE),
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discovery_hash,
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)
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async_add_entities([newswitch])
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async_add_entities([MqttSwitch(config, discovery_hash)])
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# pylint: disable=too-many-ancestors
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@ -107,37 +81,74 @@ class MqttSwitch(MqttAvailability, MqttDiscoveryUpdate, MqttEntityDeviceInfo,
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SwitchDevice, RestoreEntity):
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"""Representation of a switch that can be toggled using MQTT."""
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def __init__(self, name, icon,
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state_topic, command_topic, availability_topic,
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qos, retain, payload_on, payload_off, state_on,
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state_off, optimistic, payload_available,
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payload_not_available, unique_id: Optional[str],
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value_template, device_config: Optional[ConfigType],
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discovery_hash):
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def __init__(self, config, discovery_hash):
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"""Initialize the MQTT switch."""
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MqttAvailability.__init__(self, availability_topic, qos,
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payload_available, payload_not_available)
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MqttDiscoveryUpdate.__init__(self, discovery_hash)
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MqttEntityDeviceInfo.__init__(self, device_config)
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self._state = False
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self._name = name
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self._icon = icon
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self._state_topic = state_topic
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self._command_topic = command_topic
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self._qos = qos
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self._retain = retain
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self._payload_on = payload_on
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self._payload_off = payload_off
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self._state_on = state_on if state_on else self._payload_on
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self._state_off = state_off if state_off else self._payload_off
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self._optimistic = optimistic
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self._template = value_template
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self._unique_id = unique_id
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self._discovery_hash = discovery_hash
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self._sub_state = None
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self._name = None
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self._icon = None
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self._state_topic = None
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self._command_topic = None
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self._qos = None
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self._retain = None
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self._payload_on = None
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self._payload_off = None
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self._state_on = None
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self._state_off = None
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self._optimistic = None
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self._template = None
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self._unique_id = config.get(CONF_UNIQUE_ID)
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# Load config
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self._setup_from_config(config)
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availability_topic = config.get(CONF_AVAILABILITY_TOPIC)
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payload_available = config.get(CONF_PAYLOAD_AVAILABLE)
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payload_not_available = config.get(CONF_PAYLOAD_NOT_AVAILABLE)
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device_config = config.get(CONF_DEVICE)
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MqttAvailability.__init__(self, availability_topic, self._qos,
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payload_available, payload_not_available)
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MqttDiscoveryUpdate.__init__(self, discovery_hash,
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self.discovery_update)
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MqttEntityDeviceInfo.__init__(self, device_config)
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async def async_added_to_hass(self):
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"""Subscribe to MQTT events."""
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await super().async_added_to_hass()
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await self._subscribe_topics()
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async def discovery_update(self, discovery_payload):
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"""Handle updated discovery message."""
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config = PLATFORM_SCHEMA(discovery_payload)
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self._setup_from_config(config)
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await self.availability_discovery_update(config)
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await self._subscribe_topics()
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self.async_schedule_update_ha_state()
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def _setup_from_config(self, config):
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"""(Re)Setup the entity."""
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self._name = config.get(CONF_NAME)
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self._icon = config.get(CONF_ICON)
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self._state_topic = config.get(CONF_STATE_TOPIC)
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self._command_topic = config.get(CONF_COMMAND_TOPIC)
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self._qos = config.get(CONF_QOS)
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self._retain = config.get(CONF_RETAIN)
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self._payload_on = config.get(CONF_PAYLOAD_ON)
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self._payload_off = config.get(CONF_PAYLOAD_OFF)
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state_on = config.get(CONF_STATE_ON)
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self._state_on = state_on if state_on else self._payload_on
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state_off = config.get(CONF_STATE_OFF)
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self._state_off = state_off if state_off else self._payload_off
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self._optimistic = config.get(CONF_OPTIMISTIC)
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config.get(CONF_UNIQUE_ID)
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self._template = config.get(CONF_VALUE_TEMPLATE)
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async def _subscribe_topics(self):
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"""(Re)Subscribe to topics."""
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if self._template is not None:
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self._template.hass = self.hass
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@callback
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def state_message_received(topic, payload, qos):
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@ -156,15 +167,22 @@ class MqttSwitch(MqttAvailability, MqttDiscoveryUpdate, MqttEntityDeviceInfo,
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# Force into optimistic mode.
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self._optimistic = True
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else:
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await mqtt.async_subscribe(
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self.hass, self._state_topic, state_message_received,
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self._qos)
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self._sub_state = await subscription.async_subscribe_topics(
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self.hass, self._sub_state,
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{'state_topic': {'topic': self._state_topic,
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'msg_callback': state_message_received,
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'qos': self._qos}})
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if self._optimistic:
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last_state = await self.async_get_last_state()
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if last_state:
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self._state = last_state.state == STATE_ON
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async def async_will_remove_from_hass(self):
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"""Unsubscribe when removed."""
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await subscription.async_unsubscribe_topics(self.hass, self._sub_state)
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await MqttAvailability.async_will_remove_from_hass(self)
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@property
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def should_poll(self):
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"""Return the polling state."""
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@ -361,6 +361,42 @@ async def test_discovery_removal_switch(hass, mqtt_mock, caplog):
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assert state is None
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async def test_discovery_update_switch(hass, mqtt_mock, caplog):
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"""Test expansion of discovered switch."""
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entry = MockConfigEntry(domain=mqtt.DOMAIN)
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await async_start(hass, 'homeassistant', {}, entry)
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data1 = (
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'{ "name": "Beer",'
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' "status_topic": "test_topic",'
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' "command_topic": "test_topic" }'
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)
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data2 = (
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'{ "name": "Milk",'
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' "status_topic": "test_topic",'
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' "command_topic": "test_topic" }'
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)
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async_fire_mqtt_message(hass, 'homeassistant/switch/bla/config',
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data1)
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await hass.async_block_till_done()
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state = hass.states.get('switch.beer')
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assert state is not None
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assert state.name == 'Beer'
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async_fire_mqtt_message(hass, 'homeassistant/switch/bla/config',
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data2)
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await hass.async_block_till_done()
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await hass.async_block_till_done()
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state = hass.states.get('switch.beer')
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assert state is not None
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assert state.name == 'Milk'
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state = hass.states.get('switch.milk')
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assert state is None
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async def test_entity_device_info_with_identifier(hass, mqtt_mock):
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"""Test MQTT switch device registry integration."""
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entry = MockConfigEntry(domain=mqtt.DOMAIN)
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