mirror of
https://github.com/home-assistant/core.git
synced 2025-07-25 06:07:17 +00:00
Add WebSocket API to zeroconf to observe discovery (#143540)
* Add WebSocket API to zeroconf to observe discovery * Add WebSocket API to zeroconf to observe discovery * increase timeout * cover * cover * cover * cover * cover * cover * fix lasting side effects * cleanup merge * format
This commit is contained in:
J. Nick Koston
GitHub
parent
34d17ca458
commit
4e7d396e5b
@ -36,6 +36,7 @@ from homeassistant.helpers.typing import ConfigType
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from homeassistant.loader import async_get_homekit, async_get_zeroconf, bind_hass
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from homeassistant.setup import async_when_setup_or_start
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from . import websocket_api
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from .const import DOMAIN, ZEROCONF_TYPE
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from .discovery import ( # noqa: F401
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DATA_DISCOVERY,
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@ -198,6 +199,7 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
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)
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await discovery.async_setup()
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hass.data[DATA_DISCOVERY] = discovery
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websocket_api.async_setup(hass)
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async def _async_zeroconf_hass_start(hass: HomeAssistant, comp: str) -> None:
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"""Expose Home Assistant on zeroconf when it starts.
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@ -2,9 +2,10 @@
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from __future__ import annotations
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from collections.abc import Callable
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import contextlib
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from fnmatch import translate
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from functools import lru_cache
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from functools import lru_cache, partial
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from ipaddress import IPv4Address, IPv6Address
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import logging
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import re
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@ -190,6 +191,26 @@ class ZeroconfDiscovery:
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self.homekit_model_lookups = homekit_model_lookups
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self.homekit_model_matchers = homekit_model_matchers
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self.async_service_browser: AsyncServiceBrowser | None = None
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self._service_update_listeners: set[Callable[[AsyncServiceInfo], None]] = set()
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self._service_removed_listeners: set[Callable[[str], None]] = set()
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@callback
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def async_register_service_update_listener(
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self,
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listener: Callable[[AsyncServiceInfo], None],
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) -> Callable[[], None]:
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"""Register a service update listener."""
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self._service_update_listeners.add(listener)
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return partial(self._service_update_listeners.remove, listener)
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@callback
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def async_register_service_removed_listener(
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self,
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listener: Callable[[str], None],
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) -> Callable[[], None]:
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"""Register a service removed listener."""
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self._service_removed_listeners.add(listener)
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return partial(self._service_removed_listeners.remove, listener)
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async def async_setup(self) -> None:
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"""Start discovery."""
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@ -258,6 +279,8 @@ class ZeroconfDiscovery:
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if state_change is ServiceStateChange.Removed:
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self._async_dismiss_discoveries(name)
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for listener in self._service_removed_listeners:
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listener(name)
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return
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self._async_service_update(zeroconf, service_type, name)
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@ -304,6 +327,8 @@ class ZeroconfDiscovery:
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self, async_service_info: AsyncServiceInfo, service_type: str, name: str
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) -> None:
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"""Process a zeroconf update."""
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for listener in self._service_update_listeners:
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listener(async_service_info)
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info = info_from_service(async_service_info)
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if not info:
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# Prevent the browser thread from collapsing
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163
homeassistant/components/zeroconf/websocket_api.py
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163
homeassistant/components/zeroconf/websocket_api.py
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@ -0,0 +1,163 @@
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"""The zeroconf integration websocket apis."""
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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 functools import partial
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from itertools import chain
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import logging
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from typing import Any, cast
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import voluptuous as vol
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from zeroconf import BadTypeInNameException, DNSPointer, Zeroconf, current_time_millis
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from zeroconf.asyncio import AsyncServiceInfo, IPVersion
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from homeassistant.components import websocket_api
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from homeassistant.core import HomeAssistant, callback
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from homeassistant.helpers.json import json_bytes
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from .const import DOMAIN, REQUEST_TIMEOUT
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from .discovery import DATA_DISCOVERY, ZeroconfDiscovery
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from .models import HaAsyncZeroconf
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_LOGGER = logging.getLogger(__name__)
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CLASS_IN = 1
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TYPE_PTR = 12
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@callback
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def async_setup(hass: HomeAssistant) -> None:
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"""Set up the zeroconf websocket API."""
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websocket_api.async_register_command(hass, ws_subscribe_discovery)
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def serialize_service_info(service_info: AsyncServiceInfo) -> dict[str, Any]:
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"""Serialize an AsyncServiceInfo object."""
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return {
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"name": service_info.name,
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"type": service_info.type,
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"port": service_info.port,
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"properties": service_info.decoded_properties,
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"ip_addresses": [
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str(ip) for ip in service_info.ip_addresses_by_version(IPVersion.All)
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],
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}
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class _DiscoverySubscription:
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"""Class to hold and manage the subscription data."""
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def __init__(
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self,
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hass: HomeAssistant,
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connection: websocket_api.ActiveConnection,
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ws_msg_id: int,
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aiozc: HaAsyncZeroconf,
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discovery: ZeroconfDiscovery,
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) -> None:
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"""Initialize the subscription data."""
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self.hass = hass
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self.discovery = discovery
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self.aiozc = aiozc
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self.ws_msg_id = ws_msg_id
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self.connection = connection
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@callback
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def _async_unsubscribe(
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self, cancel_callbacks: tuple[Callable[[], None], ...]
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) -> None:
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"""Unsubscribe the callback."""
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for cancel_callback in cancel_callbacks:
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cancel_callback()
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async def async_start(self) -> None:
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"""Start the subscription."""
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connection = self.connection
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listeners = (
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self.discovery.async_register_service_update_listener(
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self._async_on_update
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),
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self.discovery.async_register_service_removed_listener(
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self._async_on_remove
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),
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)
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connection.subscriptions[self.ws_msg_id] = partial(
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self._async_unsubscribe, listeners
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)
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self.connection.send_message(
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json_bytes(websocket_api.result_message(self.ws_msg_id))
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)
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await self._async_update_from_cache()
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async def _async_update_from_cache(self) -> None:
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"""Load the records from the cache."""
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tasks: list[asyncio.Task[None]] = []
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now = current_time_millis()
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for record in self._async_get_ptr_records(self.aiozc.zeroconf):
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try:
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info = AsyncServiceInfo(record.name, record.alias)
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except BadTypeInNameException as ex:
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_LOGGER.debug(
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"Ignoring record with bad type in name: %s: %s", record.alias, ex
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)
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continue
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if info.load_from_cache(self.aiozc.zeroconf, now):
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self._async_on_update(info)
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else:
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tasks.append(
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self.hass.async_create_background_task(
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self._async_handle_service(info),
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f"zeroconf resolve {record.alias}",
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),
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)
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if tasks:
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await asyncio.gather(*tasks)
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def _async_get_ptr_records(self, zc: Zeroconf) -> list[DNSPointer]:
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"""Return all PTR records for the HAP type."""
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return cast(
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list[DNSPointer],
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list(
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chain.from_iterable(
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zc.cache.async_all_by_details(zc_type, TYPE_PTR, CLASS_IN)
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for zc_type in self.discovery.zeroconf_types
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)
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),
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)
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async def _async_handle_service(self, info: AsyncServiceInfo) -> None:
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"""Add a device that became visible via zeroconf."""
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await info.async_request(self.aiozc.zeroconf, REQUEST_TIMEOUT)
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self._async_on_update(info)
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def _async_event_message(self, message: dict[str, Any]) -> None:
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self.connection.send_message(
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json_bytes(websocket_api.event_message(self.ws_msg_id, message))
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)
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def _async_on_update(self, info: AsyncServiceInfo) -> None:
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if info.type in self.discovery.zeroconf_types:
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self._async_event_message({"add": [serialize_service_info(info)]})
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def _async_on_remove(self, name: str) -> None:
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self._async_event_message({"remove": [{"name": name}]})
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@websocket_api.require_admin
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@websocket_api.websocket_command(
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{
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vol.Required("type"): "zeroconf/subscribe_discovery",
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}
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)
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@websocket_api.async_response
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async def ws_subscribe_discovery(
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hass: HomeAssistant, connection: websocket_api.ActiveConnection, msg: dict[str, Any]
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) -> None:
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"""Handle subscribe advertisements websocket command."""
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discovery = hass.data[DATA_DISCOVERY]
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aiozc: HaAsyncZeroconf = hass.data[DOMAIN]
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await _DiscoverySubscription(
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hass, connection, msg["id"], aiozc, discovery
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).async_start()
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@ -3,7 +3,6 @@
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from unittest.mock import Mock, patch
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import pytest
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import zeroconf
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from homeassistant.components.zeroconf import async_get_instance
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from homeassistant.components.zeroconf.usage import install_multiple_zeroconf_catcher
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@ -15,6 +14,16 @@ from tests.common import extract_stack_to_frame
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DOMAIN = "zeroconf"
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class MockZeroconf:
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"""Mock Zeroconf class."""
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def __init__(self, *args, **kwargs) -> None:
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"""Initialize the mock."""
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def __new__(cls, *args, **kwargs) -> "MockZeroconf":
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"""Return the shared instance."""
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@pytest.mark.usefixtures("mock_async_zeroconf", "mock_zeroconf")
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async def test_multiple_zeroconf_instances(
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hass: HomeAssistant, caplog: pytest.LogCaptureFixture
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@ -24,12 +33,13 @@ async def test_multiple_zeroconf_instances(
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zeroconf_instance = await async_get_instance(hass)
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install_multiple_zeroconf_catcher(zeroconf_instance)
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with patch("zeroconf.Zeroconf", MockZeroconf):
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install_multiple_zeroconf_catcher(zeroconf_instance)
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new_zeroconf_instance = zeroconf.Zeroconf()
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assert new_zeroconf_instance == zeroconf_instance
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new_zeroconf_instance = MockZeroconf()
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assert new_zeroconf_instance == zeroconf_instance
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assert "Zeroconf" in caplog.text
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assert "Zeroconf" in caplog.text
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@pytest.mark.usefixtures("mock_async_zeroconf", "mock_zeroconf")
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@ -41,44 +51,45 @@ async def test_multiple_zeroconf_instances_gives_shared(
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zeroconf_instance = await async_get_instance(hass)
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install_multiple_zeroconf_catcher(zeroconf_instance)
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with patch("zeroconf.Zeroconf", MockZeroconf):
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install_multiple_zeroconf_catcher(zeroconf_instance)
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correct_frame = Mock(
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filename="/config/custom_components/burncpu/light.py",
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lineno="23",
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line="self.light.is_on",
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)
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with (
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patch(
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"homeassistant.helpers.frame.linecache.getline",
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return_value=correct_frame.line,
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),
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patch(
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"homeassistant.helpers.frame.get_current_frame",
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return_value=extract_stack_to_frame(
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[
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Mock(
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filename="/home/dev/homeassistant/core.py",
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lineno="23",
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line="do_something()",
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),
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correct_frame,
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Mock(
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filename="/home/dev/homeassistant/components/zeroconf/usage.py",
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lineno="23",
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line="self.light.is_on",
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),
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Mock(
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filename="/home/dev/mdns/lights.py",
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lineno="2",
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line="something()",
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),
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]
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correct_frame = Mock(
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filename="/config/custom_components/burncpu/light.py",
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lineno="23",
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line="self.light.is_on",
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)
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with (
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patch(
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"homeassistant.helpers.frame.linecache.getline",
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return_value=correct_frame.line,
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),
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),
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):
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assert zeroconf.Zeroconf() == zeroconf_instance
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patch(
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"homeassistant.helpers.frame.get_current_frame",
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return_value=extract_stack_to_frame(
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[
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Mock(
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filename="/home/dev/homeassistant/core.py",
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lineno="23",
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line="do_something()",
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),
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correct_frame,
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Mock(
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filename="/home/dev/homeassistant/components/zeroconf/usage.py",
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lineno="23",
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line="self.light.is_on",
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),
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Mock(
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filename="/home/dev/mdns/lights.py",
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lineno="2",
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line="something()",
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),
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]
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),
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),
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):
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assert MockZeroconf() == zeroconf_instance
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assert "custom_components/burncpu/light.py" in caplog.text
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assert "23" in caplog.text
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assert "self.light.is_on" in caplog.text
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assert "custom_components/burncpu/light.py" in caplog.text
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assert "23" in caplog.text
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assert "self.light.is_on" in caplog.text
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194
tests/components/zeroconf/test_websocket_api.py
Normal file
194
tests/components/zeroconf/test_websocket_api.py
Normal file
@ -0,0 +1,194 @@
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"""The tests for the zeroconf WebSocket API."""
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import asyncio
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import socket
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from unittest.mock import patch
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from zeroconf import (
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DNSAddress,
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DNSPointer,
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DNSService,
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DNSText,
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RecordUpdate,
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const,
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current_time_millis,
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)
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from homeassistant.components.zeroconf import DOMAIN, async_get_async_instance
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from homeassistant.core import HomeAssistant
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from homeassistant.generated import zeroconf as zc_gen
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from homeassistant.setup import async_setup_component
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from tests.typing import WebSocketGenerator
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async def test_subscribe_discovery(
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hass: HomeAssistant,
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hass_ws_client: WebSocketGenerator,
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) -> None:
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"""Test zeroconf subscribe_discovery."""
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instance = await async_get_async_instance(hass)
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instance.zeroconf.cache.async_add_records(
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[
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DNSPointer(
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"_fakeservice._tcp.local.",
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const._TYPE_PTR,
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const._CLASS_IN,
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const._DNS_OTHER_TTL,
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"wrong._wrongservice._tcp.local.",
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),
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DNSPointer(
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"_fakeservice._tcp.local.",
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const._TYPE_PTR,
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const._CLASS_IN,
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const._DNS_OTHER_TTL,
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"foo2._fakeservice._tcp.local.",
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),
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DNSService(
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"foo2._fakeservice._tcp.local.",
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const._TYPE_SRV,
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const._CLASS_IN,
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const._DNS_OTHER_TTL,
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0,
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0,
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1234,
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"foo2.local.",
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),
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DNSAddress(
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"foo2.local.",
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const._TYPE_A,
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const._CLASS_IN,
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const._DNS_HOST_TTL,
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socket.inet_aton("127.0.0.1"),
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),
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DNSText(
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"foo2.local.",
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const._TYPE_TXT,
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const._CLASS_IN,
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const._DNS_HOST_TTL,
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b"\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5"
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b"\x05c#=12\x04s#=1",
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),
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DNSPointer(
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"_fakeservice._tcp.local.",
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const._TYPE_PTR,
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const._CLASS_IN,
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const._DNS_OTHER_TTL,
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"foo3._fakeservice._tcp.local.",
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),
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DNSService(
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"foo3._fakeservice._tcp.local.",
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const._TYPE_SRV,
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const._CLASS_IN,
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const._DNS_OTHER_TTL,
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0,
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0,
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1234,
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"foo3.local.",
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),
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DNSText(
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"foo3.local.",
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const._TYPE_TXT,
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const._CLASS_IN,
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const._DNS_HOST_TTL,
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b"\x13md=HASS Bridge W9DN\x06pv=1.0\x14id=11:8E:DB:5B:5C:C5"
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b"\x05c#=12\x04s#=1",
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),
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]
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)
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with patch.dict(
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zc_gen.ZEROCONF,
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{"_fakeservice._tcp.local.": []},
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clear=True,
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||||
):
|
||||
assert await async_setup_component(hass, DOMAIN, {DOMAIN: {}})
|
||||
await hass.async_block_till_done()
|
||||
client = await hass_ws_client()
|
||||
await client.send_json(
|
||||
{
|
||||
"id": 1,
|
||||
"type": "zeroconf/subscribe_discovery",
|
||||
}
|
||||
)
|
||||
async with asyncio.timeout(1):
|
||||
response = await client.receive_json()
|
||||
assert response["success"]
|
||||
|
||||
async with asyncio.timeout(1):
|
||||
response = await client.receive_json()
|
||||
assert response["event"] == {
|
||||
"add": [
|
||||
{
|
||||
"ip_addresses": ["127.0.0.1"],
|
||||
"name": "foo2._fakeservice._tcp.local.",
|
||||
"port": 1234,
|
||||
"properties": {},
|
||||
"type": "_fakeservice._tcp.local.",
|
||||
}
|
||||
]
|
||||
}
|
||||
|
||||
# now late inject the address record
|
||||
records = [
|
||||
DNSAddress(
|
||||
"foo3.local.",
|
||||
const._TYPE_A,
|
||||
const._CLASS_IN,
|
||||
const._DNS_HOST_TTL,
|
||||
socket.inet_aton("127.0.0.1"),
|
||||
),
|
||||
]
|
||||
instance.zeroconf.cache.async_add_records(records)
|
||||
instance.zeroconf.record_manager.async_updates(
|
||||
current_time_millis(),
|
||||
[RecordUpdate(record, None) for record in records],
|
||||
)
|
||||
# Now for the add
|
||||
async with asyncio.timeout(1):
|
||||
response = await client.receive_json()
|
||||
assert response["event"] == {
|
||||
"add": [
|
||||
{
|
||||
"ip_addresses": ["127.0.0.1"],
|
||||
"name": "foo3._fakeservice._tcp.local.",
|
||||
"port": 1234,
|
||||
"properties": {},
|
||||
"type": "_fakeservice._tcp.local.",
|
||||
}
|
||||
]
|
||||
}
|
||||
# Now for the update
|
||||
async with asyncio.timeout(1):
|
||||
response = await client.receive_json()
|
||||
assert response["event"] == {
|
||||
"add": [
|
||||
{
|
||||
"ip_addresses": ["127.0.0.1"],
|
||||
"name": "foo3._fakeservice._tcp.local.",
|
||||
"port": 1234,
|
||||
"properties": {},
|
||||
"type": "_fakeservice._tcp.local.",
|
||||
}
|
||||
]
|
||||
}
|
||||
|
||||
# now move time forward and remove the record
|
||||
future = current_time_millis() + (4500 * 1000)
|
||||
records = instance.zeroconf.cache.async_expire(future)
|
||||
record_updates = [RecordUpdate(record, record) for record in records]
|
||||
instance.zeroconf.record_manager.async_updates(future, record_updates)
|
||||
instance.zeroconf.record_manager.async_updates_complete(True)
|
||||
|
||||
removes: set[str] = set()
|
||||
for _ in range(3):
|
||||
async with asyncio.timeout(1):
|
||||
response = await client.receive_json()
|
||||
assert "remove" in response["event"]
|
||||
removes.add(next(iter(response["event"]["remove"]))["name"])
|
||||
|
||||
assert len(removes) == 3
|
||||
assert removes == {
|
||||
"foo2._fakeservice._tcp.local.",
|
||||
"foo3._fakeservice._tcp.local.",
|
||||
"wrong._wrongservice._tcp.local.",
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user