core/homeassistant/components/fan/__init__.py

328 lines
9.2 KiB
Python

"""
Provides functionality to interact with fans.
For more details about this component, please refer to the documentation at
https://home-assistant.io/components/fan/
"""
import asyncio
from datetime import timedelta
import functools as ft
import logging
import voluptuous as vol
from homeassistant.components import group
from homeassistant.const import (SERVICE_TURN_ON, SERVICE_TOGGLE,
SERVICE_TURN_OFF, ATTR_ENTITY_ID,
STATE_UNKNOWN)
from homeassistant.loader import bind_hass
from homeassistant.helpers.entity import ToggleEntity
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.config_validation import PLATFORM_SCHEMA # noqa
import homeassistant.helpers.config_validation as cv
_LOGGER = logging.getLogger(__name__)
DOMAIN = 'fan'
DEPENDENCIES = ['group']
SCAN_INTERVAL = timedelta(seconds=30)
GROUP_NAME_ALL_FANS = 'all fans'
ENTITY_ID_ALL_FANS = group.ENTITY_ID_FORMAT.format(GROUP_NAME_ALL_FANS)
ENTITY_ID_FORMAT = DOMAIN + '.{}'
# Bitfield of features supported by the fan entity
SUPPORT_SET_SPEED = 1
SUPPORT_OSCILLATE = 2
SUPPORT_DIRECTION = 4
SERVICE_SET_SPEED = 'set_speed'
SERVICE_OSCILLATE = 'oscillate'
SERVICE_SET_DIRECTION = 'set_direction'
SPEED_OFF = 'off'
SPEED_LOW = 'low'
SPEED_MEDIUM = 'medium'
SPEED_HIGH = 'high'
DIRECTION_FORWARD = 'forward'
DIRECTION_REVERSE = 'reverse'
ATTR_SPEED = 'speed'
ATTR_SPEED_LIST = 'speed_list'
ATTR_OSCILLATING = 'oscillating'
ATTR_DIRECTION = 'direction'
PROP_TO_ATTR = {
'speed': ATTR_SPEED,
'speed_list': ATTR_SPEED_LIST,
'oscillating': ATTR_OSCILLATING,
'direction': ATTR_DIRECTION,
} # type: dict
FAN_SET_SPEED_SCHEMA = vol.Schema({
vol.Required(ATTR_ENTITY_ID): cv.entity_ids,
vol.Required(ATTR_SPEED): cv.string
}) # type: dict
FAN_TURN_ON_SCHEMA = vol.Schema({
vol.Required(ATTR_ENTITY_ID): cv.entity_ids,
vol.Optional(ATTR_SPEED): cv.string
}) # type: dict
FAN_TURN_OFF_SCHEMA = vol.Schema({
vol.Optional(ATTR_ENTITY_ID): cv.entity_ids
}) # type: dict
FAN_OSCILLATE_SCHEMA = vol.Schema({
vol.Required(ATTR_ENTITY_ID): cv.entity_ids,
vol.Required(ATTR_OSCILLATING): cv.boolean
}) # type: dict
FAN_TOGGLE_SCHEMA = vol.Schema({
vol.Required(ATTR_ENTITY_ID): cv.entity_ids
})
FAN_SET_DIRECTION_SCHEMA = vol.Schema({
vol.Required(ATTR_ENTITY_ID): cv.entity_ids,
vol.Optional(ATTR_DIRECTION): cv.string
}) # type: dict
SERVICE_TO_METHOD = {
SERVICE_TURN_ON: {
'method': 'async_turn_on',
'schema': FAN_TURN_ON_SCHEMA,
},
SERVICE_TURN_OFF: {
'method': 'async_turn_off',
'schema': FAN_TURN_OFF_SCHEMA,
},
SERVICE_TOGGLE: {
'method': 'async_toggle',
'schema': FAN_TOGGLE_SCHEMA,
},
SERVICE_SET_SPEED: {
'method': 'async_set_speed',
'schema': FAN_SET_SPEED_SCHEMA,
},
SERVICE_OSCILLATE: {
'method': 'async_oscillate',
'schema': FAN_OSCILLATE_SCHEMA,
},
SERVICE_SET_DIRECTION: {
'method': 'async_set_direction',
'schema': FAN_SET_DIRECTION_SCHEMA,
},
}
@bind_hass
def is_on(hass, entity_id: str = None) -> bool:
"""Return if the fans are on based on the statemachine."""
entity_id = entity_id or ENTITY_ID_ALL_FANS
state = hass.states.get(entity_id)
return state.attributes[ATTR_SPEED] not in [SPEED_OFF, STATE_UNKNOWN]
@bind_hass
def turn_on(hass, entity_id: str = None, speed: str = None) -> None:
"""Turn all or specified fan on."""
data = {
key: value for key, value in [
(ATTR_ENTITY_ID, entity_id),
(ATTR_SPEED, speed),
] if value is not None
}
hass.services.call(DOMAIN, SERVICE_TURN_ON, data)
@bind_hass
def turn_off(hass, entity_id: str = None) -> None:
"""Turn all or specified fan off."""
data = {ATTR_ENTITY_ID: entity_id} if entity_id else {}
hass.services.call(DOMAIN, SERVICE_TURN_OFF, data)
@bind_hass
def toggle(hass, entity_id: str = None) -> None:
"""Toggle all or specified fans."""
data = {
ATTR_ENTITY_ID: entity_id
}
hass.services.call(DOMAIN, SERVICE_TOGGLE, data)
@bind_hass
def oscillate(hass, entity_id: str = None,
should_oscillate: bool = True) -> None:
"""Set oscillation on all or specified fan."""
data = {
key: value for key, value in [
(ATTR_ENTITY_ID, entity_id),
(ATTR_OSCILLATING, should_oscillate),
] if value is not None
}
hass.services.call(DOMAIN, SERVICE_OSCILLATE, data)
@bind_hass
def set_speed(hass, entity_id: str = None, speed: str = None) -> None:
"""Set speed for all or specified fan."""
data = {
key: value for key, value in [
(ATTR_ENTITY_ID, entity_id),
(ATTR_SPEED, speed),
] if value is not None
}
hass.services.call(DOMAIN, SERVICE_SET_SPEED, data)
@bind_hass
def set_direction(hass, entity_id: str = None, direction: str = None) -> None:
"""Set direction for all or specified fan."""
data = {
key: value for key, value in [
(ATTR_ENTITY_ID, entity_id),
(ATTR_DIRECTION, direction),
] if value is not None
}
hass.services.call(DOMAIN, SERVICE_SET_DIRECTION, data)
@asyncio.coroutine
def async_setup(hass, config: dict):
"""Expose fan control via statemachine and services."""
component = EntityComponent(
_LOGGER, DOMAIN, hass, SCAN_INTERVAL, GROUP_NAME_ALL_FANS)
yield from component.async_setup(config)
@asyncio.coroutine
def async_handle_fan_service(service):
"""Handle service call for fans."""
method = SERVICE_TO_METHOD.get(service.service)
params = service.data.copy()
# Convert the entity ids to valid fan ids
target_fans = component.async_extract_from_service(service)
params.pop(ATTR_ENTITY_ID, None)
update_tasks = []
for fan in target_fans:
yield from getattr(fan, method['method'])(**params)
if not fan.should_poll:
continue
update_tasks.append(fan.async_update_ha_state(True))
if update_tasks:
yield from asyncio.wait(update_tasks, loop=hass.loop)
for service_name in SERVICE_TO_METHOD:
schema = SERVICE_TO_METHOD[service_name].get('schema')
hass.services.async_register(
DOMAIN, service_name, async_handle_fan_service, schema=schema)
return True
class FanEntity(ToggleEntity):
"""Representation of a fan."""
def set_speed(self: ToggleEntity, speed: str) -> None:
"""Set the speed of the fan."""
raise NotImplementedError()
def async_set_speed(self: ToggleEntity, speed: str):
"""Set the speed of the fan.
This method must be run in the event loop and returns a coroutine.
"""
if speed is SPEED_OFF:
return self.async_turn_off()
return self.hass.async_add_job(self.set_speed, speed)
def set_direction(self: ToggleEntity, direction: str) -> None:
"""Set the direction of the fan."""
raise NotImplementedError()
def async_set_direction(self: ToggleEntity, direction: str):
"""Set the direction of the fan.
This method must be run in the event loop and returns a coroutine.
"""
return self.hass.async_add_job(self.set_direction, direction)
# pylint: disable=arguments-differ
def turn_on(self: ToggleEntity, speed: str = None, **kwargs) -> None:
"""Turn on the fan."""
raise NotImplementedError()
# pylint: disable=arguments-differ
def async_turn_on(self: ToggleEntity, speed: str = None, **kwargs):
"""Turn on the fan.
This method must be run in the event loop and returns a coroutine.
"""
if speed is SPEED_OFF:
return self.async_turn_off()
return self.hass.async_add_job(
ft.partial(self.turn_on, speed, **kwargs))
def oscillate(self: ToggleEntity, oscillating: bool) -> None:
"""Oscillate the fan."""
pass
def async_oscillate(self: ToggleEntity, oscillating: bool):
"""Oscillate the fan.
This method must be run in the event loop and returns a coroutine.
"""
return self.hass.async_add_job(self.oscillate, oscillating)
@property
def is_on(self):
"""Return true if the entity is on."""
return self.speed not in [SPEED_OFF, STATE_UNKNOWN]
@property
def speed(self) -> str:
"""Return the current speed."""
return None
@property
def speed_list(self: ToggleEntity) -> list:
"""Get the list of available speeds."""
return []
@property
def current_direction(self) -> str:
"""Return the current direction of the fan."""
return None
@property
def state_attributes(self: ToggleEntity) -> dict:
"""Return optional state attributes."""
data = {} # type: dict
for prop, attr in PROP_TO_ATTR.items():
if not hasattr(self, prop):
continue
value = getattr(self, prop)
if value is not None:
data[attr] = value
return data
@property
def supported_features(self: ToggleEntity) -> int:
"""Flag supported features."""
return 0