mirror of
https://github.com/home-assistant/core
synced 2024-08-28 03:36:46 +02:00
654 lines
21 KiB
Python
654 lines
21 KiB
Python
"""Support for MQTT message handling."""
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from __future__ import annotations
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import asyncio
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from collections.abc import Callable
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from datetime import datetime
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import logging
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from typing import TYPE_CHECKING, Any, TypeVar, cast
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import jinja2
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import voluptuous as vol
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from homeassistant import config as conf_util
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from homeassistant.components import websocket_api
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import (
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CONF_CLIENT_ID,
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CONF_DISCOVERY,
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CONF_PASSWORD,
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CONF_PAYLOAD,
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CONF_PORT,
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CONF_PROTOCOL,
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CONF_USERNAME,
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SERVICE_RELOAD,
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)
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from homeassistant.core import HassJob, HomeAssistant, ServiceCall, callback
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from homeassistant.exceptions import (
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ConfigValidationError,
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ServiceValidationError,
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TemplateError,
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Unauthorized,
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)
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from homeassistant.helpers import config_validation as cv, event as ev, template
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from homeassistant.helpers.device_registry import DeviceEntry
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from homeassistant.helpers.dispatcher import async_dispatcher_connect
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from homeassistant.helpers.entity_platform import async_get_platforms
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from homeassistant.helpers.issue_registry import (
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async_delete_issue,
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async_get as async_get_issue_registry,
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)
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from homeassistant.helpers.reload import async_integration_yaml_config
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from homeassistant.helpers.service import async_register_admin_service
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from homeassistant.helpers.typing import ConfigType
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from homeassistant.loader import async_get_integration
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# Loading the config flow file will register the flow
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from . import debug_info, discovery
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from .client import ( # noqa: F401
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MQTT,
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async_publish,
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async_subscribe,
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publish,
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subscribe,
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)
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from .config import MQTT_BASE_SCHEMA, MQTT_RO_SCHEMA, MQTT_RW_SCHEMA # noqa: F401
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from .config_integration import CONFIG_SCHEMA_BASE
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from .const import ( # noqa: F401
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ATTR_PAYLOAD,
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ATTR_QOS,
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ATTR_RETAIN,
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ATTR_TOPIC,
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CONF_BIRTH_MESSAGE,
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CONF_BROKER,
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CONF_CERTIFICATE,
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CONF_CLIENT_CERT,
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CONF_CLIENT_KEY,
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CONF_COMMAND_TOPIC,
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CONF_DISCOVERY_PREFIX,
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CONF_KEEPALIVE,
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CONF_QOS,
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CONF_STATE_TOPIC,
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CONF_TLS_INSECURE,
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CONF_TOPIC,
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CONF_TRANSPORT,
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CONF_WILL_MESSAGE,
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CONF_WS_HEADERS,
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CONF_WS_PATH,
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DATA_MQTT,
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DATA_MQTT_AVAILABLE,
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DEFAULT_DISCOVERY,
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DEFAULT_ENCODING,
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DEFAULT_PREFIX,
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DEFAULT_QOS,
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DEFAULT_RETAIN,
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DOMAIN,
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MQTT_CONNECTED,
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MQTT_DISCONNECTED,
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PLATFORMS,
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RELOADABLE_PLATFORMS,
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)
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from .models import ( # noqa: F401
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MqttCommandTemplate,
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MqttData,
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MqttValueTemplate,
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PublishPayloadType,
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ReceiveMessage,
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ReceivePayloadType,
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)
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from .util import ( # noqa: F401
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async_create_certificate_temp_files,
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async_wait_for_mqtt_client,
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get_mqtt_data,
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mqtt_config_entry_enabled,
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valid_publish_topic,
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valid_qos_schema,
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valid_subscribe_topic,
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)
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_LOGGER = logging.getLogger(__name__)
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SERVICE_PUBLISH = "publish"
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SERVICE_DUMP = "dump"
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ATTR_TOPIC_TEMPLATE = "topic_template"
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ATTR_PAYLOAD_TEMPLATE = "payload_template"
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MAX_RECONNECT_WAIT = 300 # seconds
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CONNECTION_SUCCESS = "connection_success"
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CONNECTION_FAILED = "connection_failed"
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CONNECTION_FAILED_RECOVERABLE = "connection_failed_recoverable"
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CONFIG_ENTRY_CONFIG_KEYS = [
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CONF_BIRTH_MESSAGE,
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CONF_BROKER,
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CONF_CERTIFICATE,
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CONF_CLIENT_ID,
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CONF_CLIENT_CERT,
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CONF_CLIENT_KEY,
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CONF_DISCOVERY,
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CONF_DISCOVERY_PREFIX,
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CONF_KEEPALIVE,
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CONF_PASSWORD,
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CONF_PORT,
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CONF_PROTOCOL,
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CONF_TLS_INSECURE,
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CONF_TRANSPORT,
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CONF_WS_PATH,
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CONF_WS_HEADERS,
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CONF_USERNAME,
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CONF_WILL_MESSAGE,
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]
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_T = TypeVar("_T")
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REMOVED_OPTIONS = vol.All(
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cv.removed(CONF_BIRTH_MESSAGE), # Removed in HA Core 2023.4
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cv.removed(CONF_BROKER), # Removed in HA Core 2023.4
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cv.removed(CONF_CERTIFICATE), # Removed in HA Core 2023.4
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cv.removed(CONF_CLIENT_ID), # Removed in HA Core 2023.4
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cv.removed(CONF_CLIENT_CERT), # Removed in HA Core 2023.4
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cv.removed(CONF_CLIENT_KEY), # Removed in HA Core 2023.4
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cv.removed(CONF_DISCOVERY), # Removed in HA Core 2022.3
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cv.removed(CONF_DISCOVERY_PREFIX), # Removed in HA Core 2023.4
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cv.removed(CONF_KEEPALIVE), # Removed in HA Core 2023.4
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cv.removed(CONF_PASSWORD), # Removed in HA Core 2023.4
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cv.removed(CONF_PORT), # Removed in HA Core 2023.4
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cv.removed(CONF_PROTOCOL), # Removed in HA Core 2023.4
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cv.removed(CONF_TLS_INSECURE), # Removed in HA Core 2023.4
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cv.removed(CONF_USERNAME), # Removed in HA Core 2023.4
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cv.removed(CONF_WILL_MESSAGE), # Removed in HA Core 2023.4
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)
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# We accept 2 schemes for configuring manual MQTT items
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#
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# Preferred style:
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#
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# mqtt:
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# - {domain}:
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# name: ""
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# ...
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# - {domain}:
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# name: ""
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# ...
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# ```
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#
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# Legacy supported style:
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#
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# mqtt:
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# {domain}:
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# - name: ""
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# ...
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# - name: ""
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# ...
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CONFIG_SCHEMA = vol.Schema(
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{
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DOMAIN: vol.All(
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cv.ensure_list,
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cv.remove_falsy,
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[REMOVED_OPTIONS],
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[CONFIG_SCHEMA_BASE],
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)
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},
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extra=vol.ALLOW_EXTRA,
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)
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# Service call validation schema
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MQTT_PUBLISH_SCHEMA = vol.All(
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vol.Schema(
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{
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vol.Exclusive(ATTR_TOPIC, CONF_TOPIC): valid_publish_topic,
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vol.Exclusive(ATTR_TOPIC_TEMPLATE, CONF_TOPIC): cv.string,
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vol.Exclusive(ATTR_PAYLOAD, CONF_PAYLOAD): cv.string,
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vol.Exclusive(ATTR_PAYLOAD_TEMPLATE, CONF_PAYLOAD): cv.string,
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vol.Optional(ATTR_QOS, default=DEFAULT_QOS): valid_qos_schema,
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vol.Optional(ATTR_RETAIN, default=DEFAULT_RETAIN): cv.boolean,
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},
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required=True,
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),
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cv.has_at_least_one_key(ATTR_TOPIC, ATTR_TOPIC_TEMPLATE),
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)
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async def _async_config_entry_updated(hass: HomeAssistant, entry: ConfigEntry) -> None:
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"""Handle signals of config entry being updated.
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Causes for this is config entry options changing.
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"""
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await hass.config_entries.async_reload(entry.entry_id)
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@callback
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def _async_remove_mqtt_issues(hass: HomeAssistant, mqtt_data: MqttData) -> None:
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"""Unregister open config issues."""
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issue_registry = async_get_issue_registry(hass)
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open_issues = [
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issue_id
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for (domain, issue_id), issue_entry in issue_registry.issues.items()
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if domain == DOMAIN and issue_entry.translation_key == "invalid_platform_config"
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]
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for issue in open_issues:
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async_delete_issue(hass, DOMAIN, issue)
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async def async_check_config_schema(
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hass: HomeAssistant, config_yaml: ConfigType
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) -> None:
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"""Validate manually configured MQTT items."""
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mqtt_data = get_mqtt_data(hass)
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mqtt_config: list[dict[str, list[ConfigType]]] = config_yaml.get(DOMAIN, {})
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for mqtt_config_item in mqtt_config:
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for domain, config_items in mqtt_config_item.items():
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schema = mqtt_data.reload_schema[domain]
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for config in config_items:
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try:
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schema(config)
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except vol.Invalid as exc:
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integration = await async_get_integration(hass, DOMAIN)
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message = conf_util.format_schema_error(
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hass, exc, domain, config, integration.documentation
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)
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raise ServiceValidationError(
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message,
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translation_domain=DOMAIN,
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translation_key="invalid_platform_config",
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translation_placeholders={
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"domain": domain,
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},
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) from exc
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async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
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"""Load a config entry."""
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conf: dict[str, Any]
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mqtt_data: MqttData
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async def _setup_client() -> tuple[MqttData, dict[str, Any]]:
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"""Set up the MQTT client."""
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# Fetch configuration
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conf = dict(entry.data)
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hass_config = await conf_util.async_hass_config_yaml(hass)
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mqtt_yaml = CONFIG_SCHEMA(hass_config).get(DOMAIN, [])
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await async_create_certificate_temp_files(hass, conf)
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client = MQTT(hass, entry, conf)
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if DOMAIN in hass.data:
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mqtt_data = get_mqtt_data(hass)
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mqtt_data.config = mqtt_yaml
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mqtt_data.client = client
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else:
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# Initial setup
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websocket_api.async_register_command(hass, websocket_subscribe)
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websocket_api.async_register_command(hass, websocket_mqtt_info)
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hass.data[DATA_MQTT] = mqtt_data = MqttData(config=mqtt_yaml, client=client)
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client.start(mqtt_data)
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# Restore saved subscriptions
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if mqtt_data.subscriptions_to_restore:
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mqtt_data.client.async_restore_tracked_subscriptions(
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mqtt_data.subscriptions_to_restore
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)
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mqtt_data.subscriptions_to_restore = []
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mqtt_data.reload_dispatchers.append(
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entry.add_update_listener(_async_config_entry_updated)
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)
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await mqtt_data.client.async_connect()
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return (mqtt_data, conf)
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client_available: asyncio.Future[bool]
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if DATA_MQTT_AVAILABLE not in hass.data:
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client_available = hass.data[DATA_MQTT_AVAILABLE] = hass.loop.create_future()
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else:
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client_available = hass.data[DATA_MQTT_AVAILABLE]
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setup_ok: bool = False
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try:
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mqtt_data, conf = await _setup_client()
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setup_ok = True
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finally:
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if not client_available.done():
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client_available.set_result(setup_ok)
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async def async_publish_service(call: ServiceCall) -> None:
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"""Handle MQTT publish service calls."""
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msg_topic: str | None = call.data.get(ATTR_TOPIC)
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msg_topic_template: str | None = call.data.get(ATTR_TOPIC_TEMPLATE)
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payload: PublishPayloadType = call.data.get(ATTR_PAYLOAD)
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payload_template: str | None = call.data.get(ATTR_PAYLOAD_TEMPLATE)
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qos: int = call.data[ATTR_QOS]
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retain: bool = call.data[ATTR_RETAIN]
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if msg_topic_template is not None:
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try:
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rendered_topic: Any = template.Template(
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msg_topic_template, hass
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).async_render(parse_result=False)
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msg_topic = valid_publish_topic(rendered_topic)
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except (jinja2.TemplateError, TemplateError) as exc:
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_LOGGER.error(
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(
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"Unable to publish: rendering topic template of %s "
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"failed because %s"
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),
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msg_topic_template,
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exc,
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)
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return
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except vol.Invalid as err:
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_LOGGER.error(
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(
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"Unable to publish: topic template '%s' produced an "
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"invalid topic '%s' after rendering (%s)"
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),
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msg_topic_template,
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rendered_topic,
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err,
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)
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return
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if payload_template is not None:
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try:
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payload = MqttCommandTemplate(
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template.Template(payload_template), hass=hass
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).async_render()
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except (jinja2.TemplateError, TemplateError) as exc:
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_LOGGER.error(
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(
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"Unable to publish to %s: rendering payload template of "
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"%s failed because %s"
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),
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msg_topic,
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payload_template,
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exc,
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)
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return
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if TYPE_CHECKING:
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assert msg_topic is not None
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await mqtt_data.client.async_publish(msg_topic, payload, qos, retain)
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hass.services.async_register(
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DOMAIN, SERVICE_PUBLISH, async_publish_service, schema=MQTT_PUBLISH_SCHEMA
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)
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async def async_dump_service(call: ServiceCall) -> None:
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"""Handle MQTT dump service calls."""
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messages: list[tuple[str, str]] = []
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@callback
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def collect_msg(msg: ReceiveMessage) -> None:
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messages.append((msg.topic, str(msg.payload).replace("\n", "")))
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unsub = await async_subscribe(hass, call.data["topic"], collect_msg)
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def write_dump() -> None:
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with open(hass.config.path("mqtt_dump.txt"), "w", encoding="utf8") as fp:
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for msg in messages:
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fp.write(",".join(msg) + "\n")
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async def finish_dump(_: datetime) -> None:
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"""Write dump to file."""
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unsub()
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await hass.async_add_executor_job(write_dump)
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ev.async_call_later(hass, call.data["duration"], finish_dump)
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hass.services.async_register(
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DOMAIN,
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SERVICE_DUMP,
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async_dump_service,
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schema=vol.Schema(
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{
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vol.Required("topic"): valid_subscribe_topic,
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vol.Optional("duration", default=5): int,
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}
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),
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)
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# setup platforms and discovery
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async def async_setup_reload_service() -> None:
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"""Create the reload service for the MQTT domain."""
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if hass.services.has_service(DOMAIN, SERVICE_RELOAD):
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return
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async def _reload_config(call: ServiceCall) -> None:
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"""Reload the platforms."""
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# Fetch updated manually configured items and validate
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try:
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config_yaml = await async_integration_yaml_config(
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hass, DOMAIN, raise_on_failure=True
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)
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except ConfigValidationError as ex:
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raise ServiceValidationError(
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str(ex),
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translation_domain=ex.translation_domain,
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translation_key=ex.translation_key,
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translation_placeholders=ex.translation_placeholders,
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) from ex
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# Check the schema before continuing reload
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await async_check_config_schema(hass, config_yaml)
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# Remove repair issues
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_async_remove_mqtt_issues(hass, mqtt_data)
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mqtt_data.config = config_yaml.get(DOMAIN, {})
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# Reload the modern yaml platforms
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mqtt_platforms = async_get_platforms(hass, DOMAIN)
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tasks = [
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entity.async_remove()
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for mqtt_platform in mqtt_platforms
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for entity in mqtt_platform.entities.values()
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if getattr(entity, "_discovery_data", None) is None
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and mqtt_platform.config_entry
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and mqtt_platform.domain in RELOADABLE_PLATFORMS
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]
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await asyncio.gather(*tasks)
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for _, component in mqtt_data.reload_handlers.items():
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component()
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# Fire event
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hass.bus.async_fire(f"event_{DOMAIN}_reloaded", context=call.context)
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async_register_admin_service(hass, DOMAIN, SERVICE_RELOAD, _reload_config)
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async def async_forward_entry_setup_and_setup_discovery(
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config_entry: ConfigEntry,
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conf: ConfigType,
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) -> None:
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"""Forward the config entry setup to the platforms and set up discovery."""
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# Local import to avoid circular dependencies
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# pylint: disable-next=import-outside-toplevel
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from . import device_automation, tag
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# Forward the entry setup to the MQTT platforms
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await asyncio.gather(
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*(
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[
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device_automation.async_setup_entry(hass, config_entry),
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tag.async_setup_entry(hass, config_entry),
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]
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+ [
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hass.config_entries.async_forward_entry_setup(entry, component)
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for component in PLATFORMS
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]
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)
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)
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# Setup discovery
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if conf.get(CONF_DISCOVERY, DEFAULT_DISCOVERY):
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await discovery.async_start(
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hass, conf.get(CONF_DISCOVERY_PREFIX, DEFAULT_PREFIX), entry
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)
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# Setup reload service after all platforms have loaded
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await async_setup_reload_service()
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await async_forward_entry_setup_and_setup_discovery(entry, conf)
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return True
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@websocket_api.websocket_command(
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{vol.Required("type"): "mqtt/device/debug_info", vol.Required("device_id"): str}
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)
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@callback
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def websocket_mqtt_info(
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hass: HomeAssistant, connection: websocket_api.ActiveConnection, msg: dict[str, Any]
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) -> None:
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"""Get MQTT debug info for device."""
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device_id = msg["device_id"]
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mqtt_info = debug_info.info_for_device(hass, device_id)
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connection.send_result(msg["id"], mqtt_info)
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|
@websocket_api.websocket_command(
|
|
{
|
|
vol.Required("type"): "mqtt/subscribe",
|
|
vol.Required("topic"): valid_subscribe_topic,
|
|
vol.Optional("qos"): valid_qos_schema,
|
|
}
|
|
)
|
|
@websocket_api.async_response
|
|
async def websocket_subscribe(
|
|
hass: HomeAssistant, connection: websocket_api.ActiveConnection, msg: dict[str, Any]
|
|
) -> None:
|
|
"""Subscribe to a MQTT topic."""
|
|
if not connection.user.is_admin:
|
|
raise Unauthorized
|
|
|
|
@callback
|
|
def forward_messages(mqttmsg: ReceiveMessage) -> None:
|
|
"""Forward events to websocket."""
|
|
try:
|
|
payload = cast(bytes, mqttmsg.payload).decode(
|
|
DEFAULT_ENCODING
|
|
) # not str because encoding is set to None
|
|
except (AttributeError, UnicodeDecodeError):
|
|
# Convert non UTF-8 payload to a string presentation
|
|
payload = str(mqttmsg.payload)
|
|
|
|
connection.send_message(
|
|
websocket_api.event_message(
|
|
msg["id"],
|
|
{
|
|
"topic": mqttmsg.topic,
|
|
"payload": payload,
|
|
"qos": mqttmsg.qos,
|
|
"retain": mqttmsg.retain,
|
|
},
|
|
)
|
|
)
|
|
|
|
# Perform UTF-8 decoding directly in callback routine
|
|
qos: int = msg["qos"] if "qos" in msg else DEFAULT_QOS
|
|
connection.subscriptions[msg["id"]] = await async_subscribe(
|
|
hass, msg["topic"], forward_messages, encoding=None, qos=qos
|
|
)
|
|
|
|
connection.send_message(websocket_api.result_message(msg["id"]))
|
|
|
|
|
|
ConnectionStatusCallback = Callable[[bool], None]
|
|
|
|
|
|
@callback
|
|
def async_subscribe_connection_status(
|
|
hass: HomeAssistant, connection_status_callback: ConnectionStatusCallback
|
|
) -> Callable[[], None]:
|
|
"""Subscribe to MQTT connection changes."""
|
|
connection_status_callback_job = HassJob(connection_status_callback)
|
|
|
|
async def connected() -> None:
|
|
task = hass.async_run_hass_job(connection_status_callback_job, True)
|
|
if task:
|
|
await task
|
|
|
|
async def disconnected() -> None:
|
|
task = hass.async_run_hass_job(connection_status_callback_job, False)
|
|
if task:
|
|
await task
|
|
|
|
subscriptions = {
|
|
"connect": async_dispatcher_connect(hass, MQTT_CONNECTED, connected),
|
|
"disconnect": async_dispatcher_connect(hass, MQTT_DISCONNECTED, disconnected),
|
|
}
|
|
|
|
@callback
|
|
def unsubscribe() -> None:
|
|
subscriptions["connect"]()
|
|
subscriptions["disconnect"]()
|
|
|
|
return unsubscribe
|
|
|
|
|
|
def is_connected(hass: HomeAssistant) -> bool:
|
|
"""Return if MQTT client is connected."""
|
|
mqtt_data = get_mqtt_data(hass)
|
|
return mqtt_data.client.connected
|
|
|
|
|
|
async def async_remove_config_entry_device(
|
|
hass: HomeAssistant, config_entry: ConfigEntry, device_entry: DeviceEntry
|
|
) -> bool:
|
|
"""Remove MQTT config entry from a device."""
|
|
# pylint: disable-next=import-outside-toplevel
|
|
from . import device_automation
|
|
|
|
await device_automation.async_removed_from_device(hass, device_entry.id)
|
|
return True
|
|
|
|
|
|
async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
|
|
"""Unload MQTT dump and publish service when the config entry is unloaded."""
|
|
mqtt_data = get_mqtt_data(hass)
|
|
mqtt_client = mqtt_data.client
|
|
|
|
# Unload publish and dump services.
|
|
hass.services.async_remove(
|
|
DOMAIN,
|
|
SERVICE_PUBLISH,
|
|
)
|
|
hass.services.async_remove(
|
|
DOMAIN,
|
|
SERVICE_DUMP,
|
|
)
|
|
|
|
# Stop the discovery
|
|
await discovery.async_stop(hass)
|
|
# Unload the platforms
|
|
await asyncio.gather(
|
|
*(
|
|
hass.config_entries.async_forward_entry_unload(entry, component)
|
|
for component in PLATFORMS
|
|
)
|
|
)
|
|
await asyncio.sleep(0)
|
|
# Unsubscribe reload dispatchers
|
|
while reload_dispatchers := mqtt_data.reload_dispatchers:
|
|
reload_dispatchers.pop()()
|
|
# Cleanup listeners
|
|
mqtt_client.cleanup()
|
|
|
|
# Cleanup entity registry hooks
|
|
registry_hooks = mqtt_data.discovery_registry_hooks
|
|
while registry_hooks:
|
|
registry_hooks.popitem()[1]()
|
|
# Wait for all ACKs and stop the loop
|
|
await mqtt_client.async_disconnect()
|
|
|
|
# Cleanup MQTT client availability
|
|
hass.data.pop(DATA_MQTT_AVAILABLE, None)
|
|
# Store remaining subscriptions to be able to restore or reload them
|
|
# when the entry is set up again
|
|
if subscriptions := mqtt_client.subscriptions:
|
|
mqtt_data.subscriptions_to_restore = subscriptions
|
|
|
|
# Remove repair issues
|
|
_async_remove_mqtt_issues(hass, mqtt_data)
|
|
|
|
return True
|