core/homeassistant/components/mqtt/update.py

283 lines
9.8 KiB
Python

"""Configure update platform in a device through MQTT topic."""
from __future__ import annotations
import logging
from typing import Any, TypedDict, cast
import voluptuous as vol
from homeassistant.components import update
from homeassistant.components.update import (
DEVICE_CLASSES_SCHEMA,
UpdateEntity,
UpdateEntityFeature,
)
from homeassistant.config_entries import ConfigEntry
from homeassistant.const import CONF_DEVICE_CLASS, CONF_NAME, CONF_VALUE_TEMPLATE
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers import config_validation as cv
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.restore_state import RestoreEntity
from homeassistant.helpers.typing import ConfigType
from homeassistant.util.json import JSON_DECODE_EXCEPTIONS, json_loads
from . import subscription
from .config import DEFAULT_RETAIN, MQTT_RO_SCHEMA
from .const import (
CONF_COMMAND_TOPIC,
CONF_ENCODING,
CONF_QOS,
CONF_RETAIN,
CONF_STATE_TOPIC,
PAYLOAD_EMPTY_JSON,
)
from .debug_info import log_messages
from .mixins import (
MQTT_ENTITY_COMMON_SCHEMA,
MqttEntity,
async_setup_entity_entry_helper,
write_state_on_attr_change,
)
from .models import MessageCallbackType, MqttValueTemplate, ReceiveMessage
from .util import valid_publish_topic, valid_subscribe_topic
_LOGGER = logging.getLogger(__name__)
DEFAULT_NAME = "MQTT Update"
CONF_ENTITY_PICTURE = "entity_picture"
CONF_LATEST_VERSION_TEMPLATE = "latest_version_template"
CONF_LATEST_VERSION_TOPIC = "latest_version_topic"
CONF_PAYLOAD_INSTALL = "payload_install"
CONF_RELEASE_SUMMARY = "release_summary"
CONF_RELEASE_URL = "release_url"
CONF_TITLE = "title"
PLATFORM_SCHEMA_MODERN = MQTT_RO_SCHEMA.extend(
{
vol.Optional(CONF_COMMAND_TOPIC): valid_publish_topic,
vol.Optional(CONF_DEVICE_CLASS): vol.Any(DEVICE_CLASSES_SCHEMA, None),
vol.Optional(CONF_ENTITY_PICTURE): cv.string,
vol.Optional(CONF_LATEST_VERSION_TEMPLATE): cv.template,
vol.Optional(CONF_LATEST_VERSION_TOPIC): valid_subscribe_topic,
vol.Optional(CONF_NAME): vol.Any(cv.string, None),
vol.Optional(CONF_PAYLOAD_INSTALL): cv.string,
vol.Optional(CONF_RELEASE_SUMMARY): cv.string,
vol.Optional(CONF_RELEASE_URL): cv.string,
vol.Optional(CONF_RETAIN, default=DEFAULT_RETAIN): cv.boolean,
vol.Optional(CONF_TITLE): cv.string,
},
).extend(MQTT_ENTITY_COMMON_SCHEMA.schema)
DISCOVERY_SCHEMA = vol.All(PLATFORM_SCHEMA_MODERN.extend({}, extra=vol.REMOVE_EXTRA))
class _MqttUpdatePayloadType(TypedDict, total=False):
"""Presentation of supported JSON payload to process state updates."""
installed_version: str
latest_version: str
title: str
release_summary: str
release_url: str
entity_picture: str
async def async_setup_entry(
hass: HomeAssistant,
config_entry: ConfigEntry,
async_add_entities: AddEntitiesCallback,
) -> None:
"""Set up MQTT update entity through YAML and through MQTT discovery."""
await async_setup_entity_entry_helper(
hass,
config_entry,
MqttUpdate,
update.DOMAIN,
async_add_entities,
DISCOVERY_SCHEMA,
PLATFORM_SCHEMA_MODERN,
)
class MqttUpdate(MqttEntity, UpdateEntity, RestoreEntity):
"""Representation of the MQTT update entity."""
_default_name = DEFAULT_NAME
_entity_id_format = update.ENTITY_ID_FORMAT
_entity_picture: str | None
@property
def entity_picture(self) -> str | None:
"""Return the entity picture to use in the frontend."""
if self._entity_picture is not None:
return self._entity_picture
return super().entity_picture
@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 = self._config.get(CONF_DEVICE_CLASS)
self._attr_release_summary = self._config.get(CONF_RELEASE_SUMMARY)
self._attr_release_url = self._config.get(CONF_RELEASE_URL)
self._attr_title = self._config.get(CONF_TITLE)
self._entity_picture: str | None = self._config.get(CONF_ENTITY_PICTURE)
self._templates = {
CONF_VALUE_TEMPLATE: MqttValueTemplate(
config.get(CONF_VALUE_TEMPLATE),
entity=self,
).async_render_with_possible_json_value,
CONF_LATEST_VERSION_TEMPLATE: MqttValueTemplate(
config.get(CONF_LATEST_VERSION_TEMPLATE),
entity=self,
).async_render_with_possible_json_value,
}
def _prepare_subscribe_topics(self) -> None:
"""(Re)Subscribe to topics."""
topics: dict[str, Any] = {}
def add_subscription(
topics: dict[str, Any], topic: str, msg_callback: MessageCallbackType
) -> None:
if self._config.get(topic) is not None:
topics[topic] = {
"topic": self._config[topic],
"msg_callback": msg_callback,
"qos": self._config[CONF_QOS],
"encoding": self._config[CONF_ENCODING] or None,
}
@callback
@log_messages(self.hass, self.entity_id)
@write_state_on_attr_change(
self,
{
"_attr_installed_version",
"_attr_latest_version",
"_attr_title",
"_attr_release_summary",
"_attr_release_url",
"_entity_picture",
},
)
def handle_state_message_received(msg: ReceiveMessage) -> None:
"""Handle receiving state message via MQTT."""
payload = self._templates[CONF_VALUE_TEMPLATE](msg.payload)
if not payload or payload == PAYLOAD_EMPTY_JSON:
_LOGGER.debug(
"Ignoring empty payload '%s' after rendering for topic %s",
payload,
msg.topic,
)
return
json_payload: _MqttUpdatePayloadType = {}
try:
rendered_json_payload = json_loads(payload)
if isinstance(rendered_json_payload, dict):
_LOGGER.debug(
(
"JSON payload detected after processing payload '%s' on"
" topic %s"
),
rendered_json_payload,
msg.topic,
)
json_payload = cast(_MqttUpdatePayloadType, rendered_json_payload)
else:
_LOGGER.debug(
(
"Non-dictionary JSON payload detected after processing"
" payload '%s' on topic %s"
),
payload,
msg.topic,
)
json_payload = {"installed_version": str(payload)}
except JSON_DECODE_EXCEPTIONS:
_LOGGER.debug(
(
"No valid (JSON) payload detected after processing payload '%s'"
" on topic %s"
),
payload,
msg.topic,
)
json_payload["installed_version"] = str(payload)
if "installed_version" in json_payload:
self._attr_installed_version = json_payload["installed_version"]
if "latest_version" in json_payload:
self._attr_latest_version = json_payload["latest_version"]
if "title" in json_payload:
self._attr_title = json_payload["title"]
if "release_summary" in json_payload:
self._attr_release_summary = json_payload["release_summary"]
if "release_url" in json_payload:
self._attr_release_url = json_payload["release_url"]
if "entity_picture" in json_payload:
self._entity_picture = json_payload["entity_picture"]
add_subscription(topics, CONF_STATE_TOPIC, handle_state_message_received)
@callback
@log_messages(self.hass, self.entity_id)
@write_state_on_attr_change(self, {"_attr_latest_version"})
def handle_latest_version_received(msg: ReceiveMessage) -> None:
"""Handle receiving latest version via MQTT."""
latest_version = self._templates[CONF_LATEST_VERSION_TEMPLATE](msg.payload)
if isinstance(latest_version, str) and latest_version != "":
self._attr_latest_version = latest_version
add_subscription(
topics, CONF_LATEST_VERSION_TOPIC, handle_latest_version_received
)
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)
async def async_install(
self, version: str | None, backup: bool, **kwargs: Any
) -> None:
"""Update the current value."""
payload = self._config[CONF_PAYLOAD_INSTALL]
await self.async_publish(
self._config[CONF_COMMAND_TOPIC],
payload,
self._config[CONF_QOS],
self._config[CONF_RETAIN],
self._config[CONF_ENCODING],
)
@property
def supported_features(self) -> UpdateEntityFeature:
"""Return the list of supported features."""
support = UpdateEntityFeature(0)
if self._config.get(CONF_COMMAND_TOPIC) is not None:
support |= UpdateEntityFeature.INSTALL
return support