mirror of
https://github.com/home-assistant/core
synced 2024-08-02 23:40:32 +02:00
54 lines
1.8 KiB
Python
54 lines
1.8 KiB
Python
"""Support for DSMR Reader through MQTT."""
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from __future__ import annotations
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from homeassistant.components import mqtt
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from homeassistant.components.sensor import SensorEntity
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.helpers.entity_platform import AddEntitiesCallback
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from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
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from homeassistant.util import slugify
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from .definitions import SENSORS, DSMRReaderSensorEntityDescription
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DOMAIN = "dsmr_reader"
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async def async_setup_platform(
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hass: HomeAssistant,
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config: ConfigType,
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async_add_entities: AddEntitiesCallback,
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discovery_info: DiscoveryInfoType | None = None,
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) -> None:
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"""Set up DSMR Reader sensors."""
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async_add_entities(DSMRSensor(description) for description in SENSORS)
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class DSMRSensor(SensorEntity):
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"""Representation of a DSMR sensor that is updated via MQTT."""
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entity_description: DSMRReaderSensorEntityDescription
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def __init__(self, description: DSMRReaderSensorEntityDescription) -> None:
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"""Initialize the sensor."""
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self.entity_description = description
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slug = slugify(description.key.replace("/", "_"))
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self.entity_id = f"sensor.{slug}"
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async def async_added_to_hass(self):
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"""Subscribe to MQTT events."""
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@callback
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def message_received(message):
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"""Handle new MQTT messages."""
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if self.entity_description.state is not None:
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self._attr_native_value = self.entity_description.state(message.payload)
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else:
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self._attr_native_value = message.payload
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self.async_write_ha_state()
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await mqtt.async_subscribe(
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self.hass, self.entity_description.key, message_received, 1
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)
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