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https://github.com/home-assistant/core.git
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epenet
113 lines
3.4 KiB
Python
113 lines
3.4 KiB
Python
"""Deal with Cast discovery."""
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import logging
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import threading
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from typing import TYPE_CHECKING
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import pychromecast.discovery
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import pychromecast.models
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from homeassistant.const import EVENT_HOMEASSISTANT_STOP
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from homeassistant.core import HomeAssistant
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from homeassistant.helpers.dispatcher import dispatcher_send
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from .const import (
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CONF_KNOWN_HOSTS,
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INTERNAL_DISCOVERY_RUNNING_KEY,
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SIGNAL_CAST_DISCOVERED,
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SIGNAL_CAST_REMOVED,
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)
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from .helpers import ChromecastInfo, ChromeCastZeroconf
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if TYPE_CHECKING:
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from . import CastConfigEntry
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_LOGGER = logging.getLogger(__name__)
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def discover_chromecast(
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hass: HomeAssistant,
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cast_info: pychromecast.models.CastInfo,
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config_entry: CastConfigEntry,
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) -> None:
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"""Discover a Chromecast."""
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info = ChromecastInfo(
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cast_info=cast_info,
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)
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if info.uuid is None:
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_LOGGER.error("Discovered chromecast without uuid %s", info)
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return
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info = info.fill_out_missing_chromecast_info(hass, config_entry)
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_LOGGER.debug("Discovered new or updated chromecast %s", info)
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dispatcher_send(hass, SIGNAL_CAST_DISCOVERED, info)
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def _remove_chromecast(hass: HomeAssistant, info: ChromecastInfo) -> None:
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# Removed chromecast
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_LOGGER.debug("Removed chromecast %s", info)
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dispatcher_send(hass, SIGNAL_CAST_REMOVED, info)
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def setup_internal_discovery(
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hass: HomeAssistant, config_entry: CastConfigEntry
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) -> None:
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"""Set up the pychromecast internal discovery."""
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if INTERNAL_DISCOVERY_RUNNING_KEY not in hass.data:
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hass.data[INTERNAL_DISCOVERY_RUNNING_KEY] = threading.Lock()
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if not hass.data[INTERNAL_DISCOVERY_RUNNING_KEY].acquire(blocking=False):
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# Internal discovery is already running
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return
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class CastListener(pychromecast.discovery.AbstractCastListener):
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"""Listener for discovering chromecasts."""
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def add_cast(self, uuid, _):
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"""Handle zeroconf discovery of a new chromecast."""
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discover_chromecast(hass, browser.devices[uuid], config_entry)
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def update_cast(self, uuid, _):
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"""Handle zeroconf discovery of an updated chromecast."""
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discover_chromecast(hass, browser.devices[uuid], config_entry)
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def remove_cast(self, uuid, service, cast_info):
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"""Handle zeroconf discovery of a removed chromecast."""
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_remove_chromecast(
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hass,
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ChromecastInfo(
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cast_info=cast_info,
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),
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)
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_LOGGER.debug("Starting internal pychromecast discovery")
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browser = pychromecast.discovery.CastBrowser(
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CastListener(),
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ChromeCastZeroconf.get_zeroconf(),
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config_entry.data.get(CONF_KNOWN_HOSTS),
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)
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config_entry.runtime_data.browser = browser
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browser.start_discovery()
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def stop_discovery(event):
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"""Stop discovery of new chromecasts."""
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_LOGGER.debug("Stopping internal pychromecast discovery")
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browser.stop_discovery()
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hass.data[INTERNAL_DISCOVERY_RUNNING_KEY].release()
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hass.bus.listen_once(EVENT_HOMEASSISTANT_STOP, stop_discovery)
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config_entry.add_update_listener(config_entry_updated)
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async def config_entry_updated(
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hass: HomeAssistant, config_entry: CastConfigEntry
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) -> None:
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"""Handle config entry being updated."""
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if browser := config_entry.runtime_data.browser:
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browser.host_browser.update_hosts(config_entry.data.get(CONF_KNOWN_HOSTS))
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