core/homeassistant/components/template/binary_sensor.py

411 lines
12 KiB
Python

"""Support for exposing a templated binary sensor."""
from __future__ import annotations
from datetime import timedelta
from functools import partial
import logging
from typing import Any
import voluptuous as vol
from homeassistant.components.binary_sensor import (
DEVICE_CLASSES_SCHEMA,
DOMAIN as BINARY_SENSOR_DOMAIN,
ENTITY_ID_FORMAT,
PLATFORM_SCHEMA,
BinarySensorEntity,
)
from homeassistant.const import (
ATTR_ENTITY_ID,
ATTR_FRIENDLY_NAME,
CONF_DEVICE_CLASS,
CONF_ENTITY_PICTURE_TEMPLATE,
CONF_FRIENDLY_NAME,
CONF_FRIENDLY_NAME_TEMPLATE,
CONF_ICON,
CONF_ICON_TEMPLATE,
CONF_NAME,
CONF_SENSORS,
CONF_STATE,
CONF_UNIQUE_ID,
CONF_UNIT_OF_MEASUREMENT,
CONF_VALUE_TEMPLATE,
)
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import TemplateError
from homeassistant.helpers import template
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.entity import async_generate_entity_id
from homeassistant.helpers.event import async_call_later
from . import TriggerUpdateCoordinator
from .const import (
CONF_ATTRIBUTES,
CONF_AVAILABILITY,
CONF_AVAILABILITY_TEMPLATE,
CONF_OBJECT_ID,
CONF_PICTURE,
)
from .template_entity import (
TEMPLATE_ENTITY_COMMON_SCHEMA,
TemplateEntity,
rewrite_common_legacy_to_modern_conf,
)
from .trigger_entity import TriggerEntity
CONF_DELAY_ON = "delay_on"
CONF_DELAY_OFF = "delay_off"
CONF_AUTO_OFF = "auto_off"
CONF_ATTRIBUTE_TEMPLATES = "attribute_templates"
LEGACY_FIELDS = {
CONF_ICON_TEMPLATE: CONF_ICON,
CONF_ENTITY_PICTURE_TEMPLATE: CONF_PICTURE,
CONF_AVAILABILITY_TEMPLATE: CONF_AVAILABILITY,
CONF_ATTRIBUTE_TEMPLATES: CONF_ATTRIBUTES,
CONF_FRIENDLY_NAME_TEMPLATE: CONF_NAME,
CONF_FRIENDLY_NAME: CONF_NAME,
CONF_VALUE_TEMPLATE: CONF_STATE,
}
BINARY_SENSOR_SCHEMA = vol.Schema(
{
vol.Optional(CONF_AUTO_OFF): vol.Any(cv.positive_time_period, cv.template),
vol.Optional(CONF_DELAY_OFF): vol.Any(cv.positive_time_period, cv.template),
vol.Optional(CONF_DELAY_ON): vol.Any(cv.positive_time_period, cv.template),
vol.Optional(CONF_DEVICE_CLASS): DEVICE_CLASSES_SCHEMA,
vol.Optional(CONF_NAME): cv.template,
vol.Required(CONF_STATE): cv.template,
vol.Optional(CONF_UNIQUE_ID): cv.string,
vol.Optional(CONF_UNIT_OF_MEASUREMENT): cv.string,
}
).extend(TEMPLATE_ENTITY_COMMON_SCHEMA.schema)
LEGACY_BINARY_SENSOR_SCHEMA = vol.All(
cv.deprecated(ATTR_ENTITY_ID),
vol.Schema(
{
vol.Required(CONF_VALUE_TEMPLATE): cv.template,
vol.Optional(CONF_ICON_TEMPLATE): cv.template,
vol.Optional(CONF_ENTITY_PICTURE_TEMPLATE): cv.template,
vol.Optional(CONF_AVAILABILITY_TEMPLATE): cv.template,
vol.Optional(CONF_ATTRIBUTE_TEMPLATES): vol.Schema(
{cv.string: cv.template}
),
vol.Optional(ATTR_FRIENDLY_NAME): cv.string,
vol.Optional(ATTR_ENTITY_ID): cv.entity_ids,
vol.Optional(CONF_DEVICE_CLASS): DEVICE_CLASSES_SCHEMA,
vol.Optional(CONF_DELAY_ON): vol.Any(cv.positive_time_period, cv.template),
vol.Optional(CONF_DELAY_OFF): vol.Any(cv.positive_time_period, cv.template),
vol.Optional(CONF_UNIQUE_ID): cv.string,
}
),
)
def rewrite_legacy_to_modern_conf(cfg: dict[str, dict]) -> list[dict]:
"""Rewrite legacy binary sensor definitions to modern ones."""
sensors = []
for object_id, entity_cfg in cfg.items():
entity_cfg = {**entity_cfg, CONF_OBJECT_ID: object_id}
entity_cfg = rewrite_common_legacy_to_modern_conf(entity_cfg, LEGACY_FIELDS)
if CONF_NAME not in entity_cfg:
entity_cfg[CONF_NAME] = template.Template(object_id)
sensors.append(entity_cfg)
return sensors
PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
{
vol.Required(CONF_SENSORS): cv.schema_with_slug_keys(
LEGACY_BINARY_SENSOR_SCHEMA
),
}
)
@callback
def _async_create_template_tracking_entities(
async_add_entities, hass, definitions: list[dict], unique_id_prefix: str | None
):
"""Create the template binary sensors."""
sensors = []
for entity_conf in definitions:
unique_id = entity_conf.get(CONF_UNIQUE_ID)
if unique_id and unique_id_prefix:
unique_id = f"{unique_id_prefix}-{unique_id}"
sensors.append(
BinarySensorTemplate(
hass,
entity_conf,
unique_id,
)
)
async_add_entities(sensors)
async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
"""Set up the template binary sensors."""
if discovery_info is None:
_async_create_template_tracking_entities(
async_add_entities,
hass,
rewrite_legacy_to_modern_conf(config[CONF_SENSORS]),
None,
)
return
if "coordinator" in discovery_info:
async_add_entities(
TriggerBinarySensorEntity(hass, discovery_info["coordinator"], config)
for config in discovery_info["entities"]
)
return
_async_create_template_tracking_entities(
async_add_entities,
hass,
discovery_info["entities"],
discovery_info["unique_id"],
)
class BinarySensorTemplate(TemplateEntity, BinarySensorEntity):
"""A virtual binary sensor that triggers from another sensor."""
def __init__(
self,
hass: HomeAssistant,
config: dict[str, Any],
unique_id: str | None,
) -> None:
"""Initialize the Template binary sensor."""
super().__init__(config=config)
if (object_id := config.get(CONF_OBJECT_ID)) is not None:
self.entity_id = async_generate_entity_id(
ENTITY_ID_FORMAT, object_id, hass=hass
)
self._name: str | None = None
self._friendly_name_template = config.get(CONF_NAME)
# Try to render the name as it can influence the entity ID
if self._friendly_name_template:
self._friendly_name_template.hass = hass
try:
self._name = self._friendly_name_template.async_render(
parse_result=False
)
except template.TemplateError:
pass
self._device_class = config.get(CONF_DEVICE_CLASS)
self._template = config[CONF_STATE]
self._state = None
self._delay_cancel = None
self._delay_on = None
self._delay_on_raw = config.get(CONF_DELAY_ON)
self._delay_off = None
self._delay_off_raw = config.get(CONF_DELAY_OFF)
self._unique_id = unique_id
async def async_added_to_hass(self):
"""Register callbacks."""
self.add_template_attribute("_state", self._template, None, self._update_state)
if (
self._friendly_name_template is not None
and not self._friendly_name_template.is_static
):
self.add_template_attribute("_name", self._friendly_name_template)
if self._delay_on_raw is not None:
try:
self._delay_on = cv.positive_time_period(self._delay_on_raw)
except vol.Invalid:
self.add_template_attribute(
"_delay_on", self._delay_on_raw, cv.positive_time_period
)
if self._delay_off_raw is not None:
try:
self._delay_off = cv.positive_time_period(self._delay_off_raw)
except vol.Invalid:
self.add_template_attribute(
"_delay_off", self._delay_off_raw, cv.positive_time_period
)
await super().async_added_to_hass()
@callback
def _update_state(self, result):
super()._update_state(result)
if self._delay_cancel:
self._delay_cancel()
self._delay_cancel = None
state = (
None
if isinstance(result, TemplateError)
else template.result_as_boolean(result)
)
if state == self._state:
return
# state without delay
if (
state is None
or (state and not self._delay_on)
or (not state and not self._delay_off)
):
self._state = state
return
@callback
def _set_state(_):
"""Set state of template binary sensor."""
self._state = state
self.async_write_ha_state()
delay = (self._delay_on if state else self._delay_off).total_seconds()
# state with delay. Cancelled if template result changes.
self._delay_cancel = async_call_later(self.hass, delay, _set_state)
@property
def name(self):
"""Return the name of the sensor."""
return self._name
@property
def unique_id(self):
"""Return the unique id of this binary sensor."""
return self._unique_id
@property
def is_on(self):
"""Return true if sensor is on."""
return self._state
@property
def device_class(self):
"""Return the sensor class of the binary sensor."""
return self._device_class
class TriggerBinarySensorEntity(TriggerEntity, BinarySensorEntity):
"""Sensor entity based on trigger data."""
domain = BINARY_SENSOR_DOMAIN
extra_template_keys = (CONF_STATE,)
def __init__(
self,
hass: HomeAssistant,
coordinator: TriggerUpdateCoordinator,
config: dict,
) -> None:
"""Initialize the entity."""
super().__init__(hass, coordinator, config)
for key in (CONF_DELAY_ON, CONF_DELAY_OFF, CONF_AUTO_OFF):
if isinstance(config.get(key), template.Template):
self._to_render_simple.append(key)
self._parse_result.add(key)
self._delay_cancel = None
self._auto_off_cancel = None
self._state = False
@property
def is_on(self) -> bool:
"""Return state of the sensor."""
return self._state
@callback
def _handle_coordinator_update(self) -> None:
"""Handle update of the data."""
self._process_data()
if self._delay_cancel:
self._delay_cancel()
self._delay_cancel = None
if self._auto_off_cancel:
self._auto_off_cancel()
self._auto_off_cancel = None
if not self.available:
self.async_write_ha_state()
return
raw = self._rendered.get(CONF_STATE)
state = template.result_as_boolean(raw)
key = CONF_DELAY_ON if state else CONF_DELAY_OFF
delay = self._rendered.get(key) or self._config.get(key)
# state without delay. None means rendering failed.
if self._state == state or state is None or delay is None:
self._set_state(state)
return
if not isinstance(delay, timedelta):
try:
delay = cv.positive_time_period(delay)
except vol.Invalid as err:
logging.getLogger(__name__).warning(
"Error rendering %s template: %s", key, err
)
return
# state with delay. Cancelled if new trigger received
self._delay_cancel = async_call_later(
self.hass, delay.total_seconds(), partial(self._set_state, state)
)
@callback
def _set_state(self, state, _=None):
"""Set up auto off."""
self._state = state
self.async_set_context(self.coordinator.data["context"])
self.async_write_ha_state()
if not state:
return
auto_off_time = self._rendered.get(CONF_AUTO_OFF) or self._config.get(
CONF_AUTO_OFF
)
if auto_off_time is None:
return
if not isinstance(auto_off_time, timedelta):
try:
auto_off_time = cv.positive_time_period(auto_off_time)
except vol.Invalid as err:
logging.getLogger(__name__).warning(
"Error rendering %s template: %s", CONF_AUTO_OFF, err
)
return
@callback
def _auto_off(_):
"""Set state of template binary sensor."""
self._state = False
self.async_write_ha_state()
self._auto_off_cancel = async_call_later(
self.hass, auto_off_time.total_seconds(), _auto_off
)