core/homeassistant/components/automation/numeric_state.py

165 lines
5.3 KiB
Python

"""Offer numeric state listening automation rules."""
import logging
import voluptuous as vol
from homeassistant import exceptions
from homeassistant.core import CALLBACK_TYPE, callback
from homeassistant.const import (
CONF_VALUE_TEMPLATE,
CONF_PLATFORM,
CONF_ENTITY_ID,
CONF_BELOW,
CONF_ABOVE,
CONF_FOR,
)
from homeassistant.helpers.event import async_track_state_change, async_track_same_state
from homeassistant.helpers import condition, config_validation as cv, template
# mypy: allow-incomplete-defs, allow-untyped-calls, allow-untyped-defs
# mypy: no-check-untyped-defs
TRIGGER_SCHEMA = vol.All(
vol.Schema(
{
vol.Required(CONF_PLATFORM): "numeric_state",
vol.Required(CONF_ENTITY_ID): cv.entity_ids,
vol.Optional(CONF_BELOW): vol.Coerce(float),
vol.Optional(CONF_ABOVE): vol.Coerce(float),
vol.Optional(CONF_VALUE_TEMPLATE): cv.template,
vol.Optional(CONF_FOR): vol.Any(
vol.All(cv.time_period, cv.positive_timedelta),
cv.template,
cv.template_complex,
),
}
),
cv.has_at_least_one_key(CONF_BELOW, CONF_ABOVE),
)
_LOGGER = logging.getLogger(__name__)
async def async_attach_trigger(
hass, config, action, automation_info, *, platform_type="numeric_state"
) -> CALLBACK_TYPE:
"""Listen for state changes based on configuration."""
entity_id = config.get(CONF_ENTITY_ID)
below = config.get(CONF_BELOW)
above = config.get(CONF_ABOVE)
time_delta = config.get(CONF_FOR)
template.attach(hass, time_delta)
value_template = config.get(CONF_VALUE_TEMPLATE)
unsub_track_same = {}
entities_triggered = set()
period: dict = {}
if value_template is not None:
value_template.hass = hass
@callback
def check_numeric_state(entity, from_s, to_s):
"""Return True if criteria are now met."""
if to_s is None:
return False
variables = {
"trigger": {
"platform": "numeric_state",
"entity_id": entity,
"below": below,
"above": above,
}
}
return condition.async_numeric_state(
hass, to_s, below, above, value_template, variables
)
@callback
def state_automation_listener(entity, from_s, to_s):
"""Listen for state changes and calls action."""
@callback
def call_action():
"""Call action with right context."""
hass.async_run_job(
action(
{
"trigger": {
"platform": platform_type,
"entity_id": entity,
"below": below,
"above": above,
"from_state": from_s,
"to_state": to_s,
"for": time_delta if not time_delta else period[entity],
}
},
context=to_s.context,
)
)
matching = check_numeric_state(entity, from_s, to_s)
if not matching:
entities_triggered.discard(entity)
elif entity not in entities_triggered:
entities_triggered.add(entity)
if time_delta:
variables = {
"trigger": {
"platform": "numeric_state",
"entity_id": entity,
"below": below,
"above": above,
}
}
try:
if isinstance(time_delta, template.Template):
period[entity] = vol.All(cv.time_period, cv.positive_timedelta)(
time_delta.async_render(variables)
)
elif isinstance(time_delta, dict):
time_delta_data = {}
time_delta_data.update(
template.render_complex(time_delta, variables)
)
period[entity] = vol.All(cv.time_period, cv.positive_timedelta)(
time_delta_data
)
else:
period[entity] = time_delta
except (exceptions.TemplateError, vol.Invalid) as ex:
_LOGGER.error(
"Error rendering '%s' for template: %s",
automation_info["name"],
ex,
)
entities_triggered.discard(entity)
return
unsub_track_same[entity] = async_track_same_state(
hass,
period[entity],
call_action,
entity_ids=entity,
async_check_same_func=check_numeric_state,
)
else:
call_action()
unsub = async_track_state_change(hass, entity_id, state_automation_listener)
@callback
def async_remove():
"""Remove state listeners async."""
unsub()
for async_remove in unsub_track_same.values():
async_remove()
unsub_track_same.clear()
return async_remove