core/homeassistant/components/script/__init__.py

343 lines
10 KiB
Python

"""Support for scripts."""
import asyncio
import logging
from typing import List
import voluptuous as vol
from homeassistant.const import (
ATTR_ENTITY_ID,
ATTR_NAME,
CONF_ALIAS,
CONF_ICON,
CONF_MODE,
CONF_SEQUENCE,
CONF_VARIABLES,
SERVICE_RELOAD,
SERVICE_TOGGLE,
SERVICE_TURN_OFF,
SERVICE_TURN_ON,
STATE_ON,
)
from homeassistant.core import HomeAssistant, callback
import homeassistant.helpers.config_validation as cv
from homeassistant.helpers.config_validation import make_entity_service_schema
from homeassistant.helpers.entity import ToggleEntity
from homeassistant.helpers.entity_component import EntityComponent
from homeassistant.helpers.script import (
ATTR_CUR,
ATTR_MAX,
ATTR_MODE,
CONF_MAX,
CONF_MAX_EXCEEDED,
SCRIPT_MODE_SINGLE,
Script,
make_script_schema,
)
from homeassistant.helpers.service import async_set_service_schema
from homeassistant.loader import bind_hass
_LOGGER = logging.getLogger(__name__)
DOMAIN = "script"
ATTR_LAST_ACTION = "last_action"
ATTR_LAST_TRIGGERED = "last_triggered"
ATTR_VARIABLES = "variables"
CONF_DESCRIPTION = "description"
CONF_EXAMPLE = "example"
CONF_FIELDS = "fields"
ENTITY_ID_FORMAT = DOMAIN + ".{}"
EVENT_SCRIPT_STARTED = "script_started"
SCRIPT_ENTRY_SCHEMA = make_script_schema(
{
vol.Optional(CONF_ALIAS): cv.string,
vol.Optional(CONF_ICON): cv.icon,
vol.Required(CONF_SEQUENCE): cv.SCRIPT_SCHEMA,
vol.Optional(CONF_DESCRIPTION, default=""): cv.string,
vol.Optional(CONF_VARIABLES): cv.SCRIPT_VARIABLES_SCHEMA,
vol.Optional(CONF_FIELDS, default={}): {
cv.string: {
vol.Optional(CONF_DESCRIPTION): cv.string,
vol.Optional(CONF_EXAMPLE): cv.string,
}
},
},
SCRIPT_MODE_SINGLE,
)
CONFIG_SCHEMA = vol.Schema(
{DOMAIN: cv.schema_with_slug_keys(SCRIPT_ENTRY_SCHEMA)}, extra=vol.ALLOW_EXTRA
)
SCRIPT_SERVICE_SCHEMA = vol.Schema(dict)
SCRIPT_TURN_ONOFF_SCHEMA = make_entity_service_schema(
{vol.Optional(ATTR_VARIABLES): {str: cv.match_all}}
)
RELOAD_SERVICE_SCHEMA = vol.Schema({})
@bind_hass
def is_on(hass, entity_id):
"""Return if the script is on based on the statemachine."""
return hass.states.is_state(entity_id, STATE_ON)
@callback
def scripts_with_entity(hass: HomeAssistant, entity_id: str) -> List[str]:
"""Return all scripts that reference the entity."""
if DOMAIN not in hass.data:
return []
component = hass.data[DOMAIN]
return [
script_entity.entity_id
for script_entity in component.entities
if entity_id in script_entity.script.referenced_entities
]
@callback
def entities_in_script(hass: HomeAssistant, entity_id: str) -> List[str]:
"""Return all entities in script."""
if DOMAIN not in hass.data:
return []
component = hass.data[DOMAIN]
script_entity = component.get_entity(entity_id)
if script_entity is None:
return []
return list(script_entity.script.referenced_entities)
@callback
def scripts_with_device(hass: HomeAssistant, device_id: str) -> List[str]:
"""Return all scripts that reference the device."""
if DOMAIN not in hass.data:
return []
component = hass.data[DOMAIN]
return [
script_entity.entity_id
for script_entity in component.entities
if device_id in script_entity.script.referenced_devices
]
@callback
def devices_in_script(hass: HomeAssistant, entity_id: str) -> List[str]:
"""Return all devices in script."""
if DOMAIN not in hass.data:
return []
component = hass.data[DOMAIN]
script_entity = component.get_entity(entity_id)
if script_entity is None:
return []
return list(script_entity.script.referenced_devices)
async def async_setup(hass, config):
"""Load the scripts from the configuration."""
hass.data[DOMAIN] = component = EntityComponent(_LOGGER, DOMAIN, hass)
await _async_process_config(hass, config, component)
async def reload_service(service):
"""Call a service to reload scripts."""
conf = await component.async_prepare_reload()
if conf is None:
return
await _async_process_config(hass, conf, component)
async def turn_on_service(service):
"""Call a service to turn script on."""
variables = service.data.get(ATTR_VARIABLES)
for script_entity in await component.async_extract_from_service(service):
await script_entity.async_turn_on(
variables=variables, context=service.context, wait=False
)
async def turn_off_service(service):
"""Cancel a script."""
# Stopping a script is ok to be done in parallel
script_entities = await component.async_extract_from_service(service)
if not script_entities:
return
await asyncio.wait(
[
asyncio.create_task(script_entity.async_turn_off())
for script_entity in script_entities
]
)
async def toggle_service(service):
"""Toggle a script."""
for script_entity in await component.async_extract_from_service(service):
await script_entity.async_toggle(context=service.context, wait=False)
hass.services.async_register(
DOMAIN, SERVICE_RELOAD, reload_service, schema=RELOAD_SERVICE_SCHEMA
)
hass.services.async_register(
DOMAIN, SERVICE_TURN_ON, turn_on_service, schema=SCRIPT_TURN_ONOFF_SCHEMA
)
hass.services.async_register(
DOMAIN, SERVICE_TURN_OFF, turn_off_service, schema=SCRIPT_TURN_ONOFF_SCHEMA
)
hass.services.async_register(
DOMAIN, SERVICE_TOGGLE, toggle_service, schema=SCRIPT_TURN_ONOFF_SCHEMA
)
return True
async def _async_process_config(hass, config, component):
"""Process script configuration."""
async def service_handler(service):
"""Execute a service call to script.<script name>."""
entity_id = ENTITY_ID_FORMAT.format(service.service)
script_entity = component.get_entity(entity_id)
await script_entity.async_turn_on(
variables=service.data, context=service.context
)
script_entities = [
ScriptEntity(hass, object_id, cfg)
for object_id, cfg in config.get(DOMAIN, {}).items()
]
await component.async_add_entities(script_entities)
# Register services for all entities that were created successfully.
for script_entity in script_entities:
object_id = script_entity.object_id
if component.get_entity(script_entity.entity_id) is None:
_LOGGER.error("Couldn't load script %s", object_id)
continue
cfg = config[DOMAIN][object_id]
hass.services.async_register(
DOMAIN, object_id, service_handler, schema=SCRIPT_SERVICE_SCHEMA
)
# Register the service description
service_desc = {
CONF_DESCRIPTION: cfg[CONF_DESCRIPTION],
CONF_FIELDS: cfg[CONF_FIELDS],
}
async_set_service_schema(hass, DOMAIN, object_id, service_desc)
class ScriptEntity(ToggleEntity):
"""Representation of a script entity."""
icon = None
def __init__(self, hass, object_id, cfg):
"""Initialize the script."""
self.object_id = object_id
self.icon = cfg.get(CONF_ICON)
self.entity_id = ENTITY_ID_FORMAT.format(object_id)
self.script = Script(
hass,
cfg[CONF_SEQUENCE],
cfg.get(CONF_ALIAS, object_id),
DOMAIN,
running_description="script sequence",
change_listener=self.async_change_listener,
script_mode=cfg[CONF_MODE],
max_runs=cfg[CONF_MAX],
max_exceeded=cfg[CONF_MAX_EXCEEDED],
logger=logging.getLogger(f"{__name__}.{object_id}"),
variables=cfg.get(CONF_VARIABLES),
)
self._changed = asyncio.Event()
@property
def should_poll(self):
"""No polling needed."""
return False
@property
def name(self):
"""Return the name of the entity."""
return self.script.name
@property
def state_attributes(self):
"""Return the state attributes."""
attrs = {
ATTR_LAST_TRIGGERED: self.script.last_triggered,
ATTR_MODE: self.script.script_mode,
ATTR_CUR: self.script.runs,
}
if self.script.supports_max:
attrs[ATTR_MAX] = self.script.max_runs
if self.script.last_action:
attrs[ATTR_LAST_ACTION] = self.script.last_action
return attrs
@property
def is_on(self):
"""Return true if script is on."""
return self.script.is_running
@callback
def async_change_listener(self):
"""Update state."""
self.async_write_ha_state()
self._changed.set()
async def async_turn_on(self, **kwargs):
"""Turn the script on."""
variables = kwargs.get("variables")
context = kwargs.get("context")
wait = kwargs.get("wait", True)
self.async_set_context(context)
self.hass.bus.async_fire(
EVENT_SCRIPT_STARTED,
{ATTR_NAME: self.script.name, ATTR_ENTITY_ID: self.entity_id},
context=context,
)
coro = self.script.async_run(variables, context)
if wait:
await coro
return
# Caller does not want to wait for called script to finish so let script run in
# separate Task. However, wait for first state change so we can guarantee that
# it is written to the State Machine before we return.
self._changed.clear()
self.hass.async_create_task(coro)
await self._changed.wait()
async def async_turn_off(self, **kwargs):
"""Turn script off."""
await self.script.async_stop()
async def async_will_remove_from_hass(self):
"""Stop script and remove service when it will be removed from Home Assistant."""
await self.script.async_stop()
# remove service
self.hass.services.async_remove(DOMAIN, self.object_id)