91 lines
2.6 KiB
Python
91 lines
2.6 KiB
Python
"""Support for DSMR Reader through MQTT."""
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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 callback
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from homeassistant.util import slugify
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from .definitions import DEFINITIONS
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DOMAIN = "dsmr_reader"
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async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
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"""Set up DSMR Reader sensors."""
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sensors = []
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for topic in DEFINITIONS:
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sensors.append(DSMRSensor(topic))
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async_add_entities(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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def __init__(self, topic):
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"""Initialize the sensor."""
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self._definition = DEFINITIONS[topic]
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self._entity_id = slugify(topic.replace("/", "_"))
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self._topic = topic
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self._name = self._definition.get("name", topic.split("/")[-1])
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self._device_class = self._definition.get("device_class")
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self._enable_default = self._definition.get("enable_default")
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self._unit_of_measurement = self._definition.get("unit")
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self._icon = self._definition.get("icon")
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self._transform = self._definition.get("transform")
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self._state = None
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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._transform is not None:
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self._state = self._transform(message.payload)
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else:
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self._state = message.payload
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self.async_write_ha_state()
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await mqtt.async_subscribe(self.hass, self._topic, message_received, 1)
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@property
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def name(self):
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"""Return the name of the sensor supplied in constructor."""
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return self._name
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@property
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def entity_id(self):
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"""Return the entity ID for this sensor."""
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return f"sensor.{self._entity_id}"
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@property
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def state(self):
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"""Return the current state of the entity."""
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return self._state
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@property
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def device_class(self):
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"""Return the device_class of this sensor."""
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return self._device_class
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@property
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def unit_of_measurement(self):
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"""Return the unit_of_measurement of this sensor."""
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return self._unit_of_measurement
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@property
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def entity_registry_enabled_default(self) -> bool:
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"""Return if the entity should be enabled when first added to the entity registry."""
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return self._enable_default
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@property
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def icon(self):
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"""Return the icon of this sensor."""
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return self._icon
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