357 lines
13 KiB
Python
357 lines
13 KiB
Python
"""Support for MQTT sensors."""
|
|
from __future__ import annotations
|
|
|
|
from collections.abc import Callable
|
|
from datetime import datetime, timedelta
|
|
import functools
|
|
import logging
|
|
from typing import Any
|
|
|
|
import voluptuous as vol
|
|
|
|
from homeassistant.components import sensor
|
|
from homeassistant.components.sensor import (
|
|
CONF_STATE_CLASS,
|
|
DEVICE_CLASSES_SCHEMA,
|
|
ENTITY_ID_FORMAT,
|
|
STATE_CLASSES_SCHEMA,
|
|
RestoreSensor,
|
|
SensorDeviceClass,
|
|
SensorExtraStoredData,
|
|
)
|
|
from homeassistant.config_entries import ConfigEntry
|
|
from homeassistant.const import (
|
|
CONF_DEVICE_CLASS,
|
|
CONF_FORCE_UPDATE,
|
|
CONF_NAME,
|
|
CONF_UNIT_OF_MEASUREMENT,
|
|
CONF_VALUE_TEMPLATE,
|
|
STATE_UNAVAILABLE,
|
|
STATE_UNKNOWN,
|
|
)
|
|
from homeassistant.core import CALLBACK_TYPE, HomeAssistant, State, callback
|
|
import homeassistant.helpers.config_validation as cv
|
|
from homeassistant.helpers.entity_platform import AddEntitiesCallback
|
|
from homeassistant.helpers.event import async_track_point_in_utc_time
|
|
from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
|
|
from homeassistant.util import dt as dt_util
|
|
|
|
from . import subscription
|
|
from .config import MQTT_RO_SCHEMA
|
|
from .const import CONF_ENCODING, CONF_QOS, CONF_STATE_TOPIC
|
|
from .debug_info import log_messages
|
|
from .mixins import (
|
|
MQTT_ENTITY_COMMON_SCHEMA,
|
|
MqttAvailability,
|
|
MqttEntity,
|
|
async_setup_entry_helper,
|
|
warn_for_legacy_schema,
|
|
)
|
|
from .models import (
|
|
MqttValueTemplate,
|
|
PayloadSentinel,
|
|
ReceiveMessage,
|
|
ReceivePayloadType,
|
|
)
|
|
from .util import get_mqtt_data, valid_subscribe_topic
|
|
|
|
_LOGGER = logging.getLogger(__name__)
|
|
|
|
CONF_EXPIRE_AFTER = "expire_after"
|
|
CONF_LAST_RESET_TOPIC = "last_reset_topic"
|
|
CONF_LAST_RESET_VALUE_TEMPLATE = "last_reset_value_template"
|
|
|
|
MQTT_SENSOR_ATTRIBUTES_BLOCKED = frozenset(
|
|
{
|
|
sensor.ATTR_LAST_RESET,
|
|
sensor.ATTR_STATE_CLASS,
|
|
}
|
|
)
|
|
|
|
DEFAULT_NAME = "MQTT Sensor"
|
|
DEFAULT_FORCE_UPDATE = False
|
|
|
|
|
|
def validate_options(conf: ConfigType) -> ConfigType:
|
|
"""Validate options.
|
|
|
|
If last reset topic is present it must be same as the state topic.
|
|
"""
|
|
if (
|
|
CONF_LAST_RESET_TOPIC in conf
|
|
and CONF_STATE_TOPIC in conf
|
|
and conf[CONF_LAST_RESET_TOPIC] != conf[CONF_STATE_TOPIC]
|
|
):
|
|
_LOGGER.warning(
|
|
"'%s' must be same as '%s'", CONF_LAST_RESET_TOPIC, CONF_STATE_TOPIC
|
|
)
|
|
|
|
if CONF_LAST_RESET_TOPIC in conf and CONF_LAST_RESET_VALUE_TEMPLATE not in conf:
|
|
_LOGGER.warning(
|
|
"'%s' must be set if '%s' is set",
|
|
CONF_LAST_RESET_VALUE_TEMPLATE,
|
|
CONF_LAST_RESET_TOPIC,
|
|
)
|
|
|
|
return conf
|
|
|
|
|
|
_PLATFORM_SCHEMA_BASE = MQTT_RO_SCHEMA.extend(
|
|
{
|
|
vol.Optional(CONF_DEVICE_CLASS): DEVICE_CLASSES_SCHEMA,
|
|
vol.Optional(CONF_EXPIRE_AFTER): cv.positive_int,
|
|
vol.Optional(CONF_FORCE_UPDATE, default=DEFAULT_FORCE_UPDATE): cv.boolean,
|
|
vol.Optional(CONF_LAST_RESET_TOPIC): valid_subscribe_topic,
|
|
vol.Optional(CONF_LAST_RESET_VALUE_TEMPLATE): cv.template,
|
|
vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string,
|
|
vol.Optional(CONF_STATE_CLASS): STATE_CLASSES_SCHEMA,
|
|
vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
|
|
}
|
|
).extend(MQTT_ENTITY_COMMON_SCHEMA.schema)
|
|
|
|
PLATFORM_SCHEMA_MODERN = vol.All(
|
|
_PLATFORM_SCHEMA_BASE,
|
|
validate_options,
|
|
)
|
|
|
|
# Configuring MQTT Sensors under the sensor platform key was deprecated in HA Core 2022.6
|
|
PLATFORM_SCHEMA = vol.All(
|
|
warn_for_legacy_schema(sensor.DOMAIN),
|
|
)
|
|
|
|
DISCOVERY_SCHEMA = vol.All(
|
|
cv.deprecated(CONF_LAST_RESET_TOPIC),
|
|
_PLATFORM_SCHEMA_BASE.extend({}, extra=vol.REMOVE_EXTRA),
|
|
validate_options,
|
|
)
|
|
|
|
|
|
async def async_setup_entry(
|
|
hass: HomeAssistant,
|
|
config_entry: ConfigEntry,
|
|
async_add_entities: AddEntitiesCallback,
|
|
) -> None:
|
|
"""Set up MQTT sensor through configuration.yaml and dynamically through MQTT discovery."""
|
|
setup = functools.partial(
|
|
_async_setup_entity, hass, async_add_entities, config_entry=config_entry
|
|
)
|
|
await async_setup_entry_helper(hass, sensor.DOMAIN, setup, DISCOVERY_SCHEMA)
|
|
|
|
|
|
async def _async_setup_entity(
|
|
hass: HomeAssistant,
|
|
async_add_entities: AddEntitiesCallback,
|
|
config: ConfigType,
|
|
config_entry: ConfigEntry,
|
|
discovery_data: DiscoveryInfoType | None = None,
|
|
) -> None:
|
|
"""Set up MQTT sensor."""
|
|
async_add_entities([MqttSensor(hass, config, config_entry, discovery_data)])
|
|
|
|
|
|
class MqttSensor(MqttEntity, RestoreSensor):
|
|
"""Representation of a sensor that can be updated using MQTT."""
|
|
|
|
_entity_id_format = ENTITY_ID_FORMAT
|
|
_attr_last_reset = None
|
|
_attributes_extra_blocked = MQTT_SENSOR_ATTRIBUTES_BLOCKED
|
|
_expire_after: int | None
|
|
_expired: bool | None
|
|
_template: Callable[[ReceivePayloadType, PayloadSentinel], ReceivePayloadType]
|
|
_last_reset_template: Callable[[ReceivePayloadType], ReceivePayloadType]
|
|
|
|
def __init__(
|
|
self,
|
|
hass: HomeAssistant,
|
|
config: ConfigType,
|
|
config_entry: ConfigEntry,
|
|
discovery_data: DiscoveryInfoType | None,
|
|
) -> None:
|
|
"""Initialize the sensor."""
|
|
self._expiration_trigger: CALLBACK_TYPE | None = None
|
|
MqttEntity.__init__(self, hass, config, config_entry, discovery_data)
|
|
|
|
async def mqtt_async_added_to_hass(self) -> None:
|
|
"""Restore state for entities with expire_after set."""
|
|
last_state: State | None
|
|
last_sensor_data: SensorExtraStoredData | None
|
|
if (
|
|
(_expire_after := self._expire_after) is not None
|
|
and _expire_after > 0
|
|
and (last_state := await self.async_get_last_state()) is not None
|
|
and last_state.state not in [STATE_UNKNOWN, STATE_UNAVAILABLE]
|
|
and (last_sensor_data := await self.async_get_last_sensor_data())
|
|
is not None
|
|
# We might have set up a trigger already after subscribing from
|
|
# MqttEntity.async_added_to_hass(), then we should not restore state
|
|
and not self._expiration_trigger
|
|
):
|
|
expiration_at = last_state.last_changed + timedelta(seconds=_expire_after)
|
|
if expiration_at < (time_now := dt_util.utcnow()):
|
|
# Skip reactivating the sensor
|
|
_LOGGER.debug("Skip state recovery after reload for %s", self.entity_id)
|
|
return
|
|
self._expired = False
|
|
self._attr_native_value = last_sensor_data.native_value
|
|
|
|
self._expiration_trigger = async_track_point_in_utc_time(
|
|
self.hass, self._value_is_expired, expiration_at
|
|
)
|
|
_LOGGER.debug(
|
|
"State recovered after reload for %s, remaining time before expiring %s",
|
|
self.entity_id,
|
|
expiration_at - time_now,
|
|
)
|
|
|
|
async def async_will_remove_from_hass(self) -> None:
|
|
"""Remove exprire triggers."""
|
|
# Clean up expire triggers
|
|
if self._expiration_trigger:
|
|
_LOGGER.debug("Clean up expire after trigger for %s", self.entity_id)
|
|
self._expiration_trigger()
|
|
self._expiration_trigger = None
|
|
self._expired = False
|
|
await MqttEntity.async_will_remove_from_hass(self)
|
|
|
|
@staticmethod
|
|
def config_schema() -> vol.Schema:
|
|
"""Return the config schema."""
|
|
return DISCOVERY_SCHEMA
|
|
|
|
def _setup_from_config(self, config: ConfigType) -> None:
|
|
"""(Re)Setup the entity."""
|
|
self._attr_device_class = config.get(CONF_DEVICE_CLASS)
|
|
self._attr_force_update = config[CONF_FORCE_UPDATE]
|
|
self._attr_native_unit_of_measurement = config.get(CONF_UNIT_OF_MEASUREMENT)
|
|
self._attr_state_class = config.get(CONF_STATE_CLASS)
|
|
|
|
self._expire_after = config.get(CONF_EXPIRE_AFTER)
|
|
if self._expire_after is not None and self._expire_after > 0:
|
|
self._expired = True
|
|
else:
|
|
self._expired = None
|
|
|
|
self._template = MqttValueTemplate(
|
|
self._config.get(CONF_VALUE_TEMPLATE), entity=self
|
|
).async_render_with_possible_json_value
|
|
self._last_reset_template = MqttValueTemplate(
|
|
self._config.get(CONF_LAST_RESET_VALUE_TEMPLATE), entity=self
|
|
).async_render_with_possible_json_value
|
|
|
|
def _prepare_subscribe_topics(self) -> None:
|
|
"""(Re)Subscribe to topics."""
|
|
topics: dict[str, dict[str, Any]] = {}
|
|
|
|
def _update_state(msg: ReceiveMessage) -> None:
|
|
# auto-expire enabled?
|
|
if self._expire_after is not None and self._expire_after > 0:
|
|
# When self._expire_after is set, and we receive a message, assume device is not expired since it has to be to receive the message
|
|
self._expired = False
|
|
|
|
# Reset old trigger
|
|
if self._expiration_trigger:
|
|
self._expiration_trigger()
|
|
|
|
# Set new trigger
|
|
expiration_at = dt_util.utcnow() + timedelta(seconds=self._expire_after)
|
|
|
|
self._expiration_trigger = async_track_point_in_utc_time(
|
|
self.hass, self._value_is_expired, expiration_at
|
|
)
|
|
|
|
payload = self._template(msg.payload, PayloadSentinel.DEFAULT)
|
|
if payload is PayloadSentinel.DEFAULT:
|
|
return
|
|
if self.device_class not in {
|
|
SensorDeviceClass.DATE,
|
|
SensorDeviceClass.TIMESTAMP,
|
|
}:
|
|
self._attr_native_value = str(payload)
|
|
return
|
|
if (payload_datetime := dt_util.parse_datetime(str(payload))) is None:
|
|
_LOGGER.warning(
|
|
"Invalid state message '%s' from '%s'", msg.payload, msg.topic
|
|
)
|
|
self._attr_native_value = None
|
|
return
|
|
if self.device_class == SensorDeviceClass.DATE:
|
|
self._attr_native_value = payload_datetime.date()
|
|
return
|
|
self._attr_native_value = payload_datetime
|
|
|
|
def _update_last_reset(msg: ReceiveMessage) -> None:
|
|
payload = self._last_reset_template(msg.payload)
|
|
|
|
if not payload:
|
|
_LOGGER.debug("Ignoring empty last_reset message from '%s'", msg.topic)
|
|
return
|
|
try:
|
|
last_reset = dt_util.parse_datetime(str(payload))
|
|
if last_reset is None:
|
|
raise ValueError
|
|
self._attr_last_reset = last_reset
|
|
except ValueError:
|
|
_LOGGER.warning(
|
|
"Invalid last_reset message '%s' from '%s'", msg.payload, msg.topic
|
|
)
|
|
|
|
@callback
|
|
@log_messages(self.hass, self.entity_id)
|
|
def message_received(msg: ReceiveMessage) -> None:
|
|
"""Handle new MQTT messages."""
|
|
_update_state(msg)
|
|
if CONF_LAST_RESET_VALUE_TEMPLATE in self._config and (
|
|
CONF_LAST_RESET_TOPIC not in self._config
|
|
or self._config[CONF_LAST_RESET_TOPIC] == self._config[CONF_STATE_TOPIC]
|
|
):
|
|
_update_last_reset(msg)
|
|
get_mqtt_data(self.hass).state_write_requests.write_state_request(self)
|
|
|
|
topics["state_topic"] = {
|
|
"topic": self._config[CONF_STATE_TOPIC],
|
|
"msg_callback": message_received,
|
|
"qos": self._config[CONF_QOS],
|
|
"encoding": self._config[CONF_ENCODING] or None,
|
|
}
|
|
|
|
@callback
|
|
@log_messages(self.hass, self.entity_id)
|
|
def last_reset_message_received(msg: ReceiveMessage) -> None:
|
|
"""Handle new last_reset messages."""
|
|
_update_last_reset(msg)
|
|
get_mqtt_data(self.hass).state_write_requests.write_state_request(self)
|
|
|
|
if (
|
|
CONF_LAST_RESET_TOPIC in self._config
|
|
and self._config[CONF_LAST_RESET_TOPIC] != self._config[CONF_STATE_TOPIC]
|
|
):
|
|
topics["last_reset_topic"] = {
|
|
"topic": self._config[CONF_LAST_RESET_TOPIC],
|
|
"msg_callback": last_reset_message_received,
|
|
"qos": self._config[CONF_QOS],
|
|
"encoding": self._config[CONF_ENCODING] or None,
|
|
}
|
|
|
|
self._sub_state = subscription.async_prepare_subscribe_topics(
|
|
self.hass, self._sub_state, topics
|
|
)
|
|
|
|
async def _subscribe_topics(self) -> None:
|
|
"""(Re)Subscribe to topics."""
|
|
await subscription.async_subscribe_topics(self.hass, self._sub_state)
|
|
|
|
@callback
|
|
def _value_is_expired(self, *_: datetime) -> None:
|
|
"""Triggered when value is expired."""
|
|
self._expiration_trigger = None
|
|
self._expired = True
|
|
self.async_write_ha_state()
|
|
|
|
@property
|
|
def available(self) -> bool:
|
|
"""Return true if the device is available and value has not expired."""
|
|
# mypy doesn't know about fget: https://github.com/python/mypy/issues/6185
|
|
return MqttAvailability.available.fget(self) and ( # type: ignore[attr-defined]
|
|
self._expire_after is None or not self._expired
|
|
)
|