feat(playlists): expose scene playlists as Home Assistant entities

One device per scene playlist (model "Scene Playlist"), each with:
- a switch (start/stop; the server cycles one playlist at a time, so starting one stops any other)
- a "Current Scene" sensor that resolves the active preset name from scene_presets while this playlist is cycling
- an "Items" diagnostic sensor (configured scene count; no state_class)

The coordinator reads scene_playlists plus the flat playlist_state from the /api/v1/snapshot payload and gains start_playlist()/stop_playlist(); __init__ registers and prunes per-playlist devices and reloads on playlist-id changes; the event listener also refreshes on the playlist_state_changed WS event. Shared device/lookup/running-state plumbing lives in a new LedGrabPlaylistEntity base (entity.py) used by both the switch and the sensors. Adds en/ru translation keys.

Note: this also lands the in-progress coordinator migration from the per-request fan-out to the single /api/v1/snapshot poll that was already present in the working tree.

Requires the led-grab server /api/v1/snapshot to emit scene_playlists + playlist_state (companion server change, tracked separately).
This commit is contained in:
2026-06-08 15:59:08 +03:00
parent a666d9eb9c
commit 705616f8b0
9 changed files with 404 additions and 289 deletions
+119 -283
View File
@@ -10,6 +10,7 @@ from typing import Any
import aiohttp
from homeassistant.core import HomeAssistant
from homeassistant.exceptions import ConfigEntryAuthFailed
from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
from homeassistant.util import dt as dt_util
@@ -47,6 +48,10 @@ class LedGrabCoordinator(DataUpdateCoordinator):
self.boot_time: datetime | None = None
self._auth_headers = {"Authorization": f"Bearer {api_key}"} if api_key else {}
self._timeout = aiohttp.ClientTimeout(total=DEFAULT_TIMEOUT)
# The aggregated snapshot does more server-side work than any single
# endpoint (system metrics + cold-cache device brightness), so give it
# a more generous ceiling than the per-request default.
self._snapshot_timeout = aiohttp.ClientTimeout(total=DEFAULT_TIMEOUT * 3)
super().__init__(
hass,
@@ -56,150 +61,87 @@ class LedGrabCoordinator(DataUpdateCoordinator):
)
async def _async_update_data(self) -> dict[str, Any]:
"""Fetch data from API."""
"""Fetch the full server snapshot in one request and reshape it.
The server's ``/api/v1/snapshot`` endpoint aggregates everything a poll
needs (targets + state + metrics, devices + brightness, the source /
preset / clock lists, and the system block), so the coordinator no
longer fans out per-target ``/state`` + ``/metrics`` or per-device
``/brightness`` requests. The reshaped result keeps the same structure
the entity platforms consume.
"""
try:
async with asyncio.timeout(DEFAULT_TIMEOUT * 3):
targets_list = await self._fetch_targets()
# Fetch state and metrics for all targets in parallel
targets_data: dict[str, dict[str, Any]] = {}
async def fetch_target_data(target: dict) -> tuple[str, dict]:
target_id = target["id"]
try:
state, metrics = await asyncio.gather(
self._fetch_target_state(target_id),
self._fetch_target_metrics(target_id),
)
except Exception as err:
_LOGGER.warning(
"Failed to fetch data for target %s: %s",
target_id,
err,
)
state = None
metrics = None
return target_id, {
"info": target,
"state": state,
"metrics": metrics,
}
results = await asyncio.gather(
*(fetch_target_data(t) for t in targets_list),
return_exceptions=True,
)
for r in results:
if isinstance(r, Exception):
_LOGGER.warning("Target fetch failed: %s", r)
continue
target_id, data = r
targets_data[target_id] = data
# Fetch devices, CSS sources, value sources, scene presets,
# sync clocks, system performance, health, and update status
# in parallel
(
devices_data,
css_sources,
value_sources,
scene_presets,
sync_clocks,
performance,
health,
update_status,
) = await asyncio.gather(
self._fetch_devices(),
self._fetch_css_sources(),
self._fetch_value_sources(),
self._fetch_scene_presets(),
self._fetch_sync_clocks(),
self._fetch_system_performance(),
self._fetch_health(),
self._fetch_update_status(),
)
if health:
version = health.get("version")
if version:
self.server_version = version
self._update_boot_time(health.get("uptime_seconds"))
return {
"targets": targets_data,
"devices": devices_data,
"css_sources": css_sources,
"value_sources": value_sources,
"scene_presets": scene_presets,
"sync_clocks": sync_clocks,
"server_version": self.server_version,
"system": {
"performance": performance,
"health": health,
"boot_time": self.boot_time,
"update": update_status,
},
}
snapshot = await self._fetch_snapshot()
except asyncio.TimeoutError as err:
raise UpdateFailed(f"Timeout fetching data: {err}") from err
except aiohttp.ClientResponseError as err:
# A rotated/invalid API key fails every poll identically now that
# it's a single request — surface it as an auth failure so Home
# Assistant starts the reauth flow instead of retrying forever.
if err.status in (401, 403):
raise ConfigEntryAuthFailed("Invalid API key") from err
raise UpdateFailed(f"Error communicating with API: {err}") from err
except aiohttp.ClientError as err:
raise UpdateFailed(f"Error communicating with API: {err}") from err
async def _fetch_health(self) -> dict[str, Any] | None:
"""Fetch /health (unauthenticated, cheap; gives version + uptime)."""
try:
async with self.session.get(
f"{self.server_url}/health",
timeout=self._timeout,
) as resp:
resp.raise_for_status()
return await resp.json()
except Exception as err:
_LOGGER.debug("Failed to fetch health: %s", err)
return None
system = snapshot.get("system") or {}
health = system.get("health") or {}
version = health.get("version")
if version:
self.server_version = version
self._update_boot_time(health.get("uptime_seconds"))
async def _fetch_system_performance(self) -> dict[str, Any] | None:
"""Fetch CPU/RAM/GPU/temperature metrics from the server.
states = snapshot.get("target_states") or {}
metrics = snapshot.get("target_metrics") or {}
targets_data: dict[str, dict[str, Any]] = {}
for target in snapshot.get("targets") or []:
target_id = target.get("id")
if not target_id:
continue
targets_data[target_id] = {
"info": target,
"state": states.get(target_id),
"metrics": metrics.get(target_id),
}
Returns ``None`` on older servers without the endpoint or on transient
failures — callers must treat the absence as "no telemetry this poll".
"""
try:
async with self.session.get(
f"{self.server_url}/api/v1/system/performance",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status == 404:
return None
resp.raise_for_status()
return await resp.json()
except Exception as err:
_LOGGER.debug("Failed to fetch system performance: %s", err)
return None
brightness = snapshot.get("device_brightness") or {}
devices_data: dict[str, dict[str, Any]] = {}
for device in snapshot.get("devices") or []:
device_id = device.get("id")
if not device_id:
continue
devices_data[device_id] = {
"info": device,
"brightness": brightness.get(device_id),
}
async def _fetch_update_status(self) -> dict[str, Any] | None:
"""Fetch auto-update status (current version, available release, …).
return {
"targets": targets_data,
"devices": devices_data,
"css_sources": snapshot.get("css_sources") or [],
"value_sources": snapshot.get("value_sources") or [],
"scene_presets": snapshot.get("scene_presets") or [],
"scene_playlists": snapshot.get("scene_playlists") or [],
"playlist_state": snapshot.get("playlist_state") or {},
"sync_clocks": snapshot.get("sync_clocks") or [],
"server_version": self.server_version,
"system": {
"performance": system.get("performance"),
"health": health or None,
"boot_time": self.boot_time,
"update": system.get("update"),
},
}
Older servers without the update service return 404 — treat that as
"no update entity should be registered" by returning ``None``.
"""
try:
async with self.session.get(
f"{self.server_url}/api/v1/system/update/status",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status == 404:
return None
resp.raise_for_status()
return await resp.json()
except Exception as err:
_LOGGER.debug("Failed to fetch update status: %s", err)
return None
async def _fetch_snapshot(self) -> dict[str, Any]:
"""GET the aggregated server snapshot (single round trip)."""
async with self.session.get(
f"{self.server_url}/api/v1/snapshot",
headers=self._auth_headers,
timeout=self._snapshot_timeout,
) as resp:
resp.raise_for_status()
return await resp.json()
async def apply_update(self) -> None:
"""Trigger the server's apply-update flow.
@@ -239,89 +181,6 @@ class LedGrabCoordinator(DataUpdateCoordinator):
):
self.boot_time = candidate
async def _fetch_targets(self) -> list[dict[str, Any]]:
"""Fetch all output targets."""
async with self.session.get(
f"{self.server_url}/api/v1/output-targets",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
data = await resp.json()
return data.get("targets", [])
async def _fetch_target_state(self, target_id: str) -> dict[str, Any]:
"""Fetch target processing state."""
async with self.session.get(
f"{self.server_url}/api/v1/output-targets/{target_id}/state",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
return await resp.json()
async def _fetch_target_metrics(self, target_id: str) -> dict[str, Any]:
"""Fetch target metrics."""
async with self.session.get(
f"{self.server_url}/api/v1/output-targets/{target_id}/metrics",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
return await resp.json()
async def _fetch_devices(self) -> dict[str, dict[str, Any]]:
"""Fetch all devices with capabilities and brightness."""
try:
async with self.session.get(
f"{self.server_url}/api/v1/devices",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
data = await resp.json()
devices = data.get("devices", [])
except Exception as err:
_LOGGER.warning("Failed to fetch devices: %s", err)
return {}
# Fetch brightness for all capable devices in parallel
async def fetch_device_entry(device: dict) -> tuple[str, dict[str, Any]]:
device_id = device["id"]
entry: dict[str, Any] = {"info": device, "brightness": None}
if "brightness_control" in (device.get("capabilities") or []):
try:
async with self.session.get(
f"{self.server_url}/api/v1/devices/{device_id}/brightness",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status == 200:
bri_data = await resp.json()
entry["brightness"] = bri_data.get("brightness")
except Exception as err:
_LOGGER.warning(
"Failed to fetch brightness for device %s: %s",
device_id,
err,
)
return device_id, entry
results = await asyncio.gather(
*(fetch_device_entry(d) for d in devices),
return_exceptions=True,
)
devices_data: dict[str, dict[str, Any]] = {}
for r in results:
if isinstance(r, Exception):
_LOGGER.warning("Device fetch failed: %s", r)
continue
device_id, entry = r
devices_data[device_id] = entry
return devices_data
async def set_brightness(self, device_id: str, brightness: int) -> None:
"""Set brightness for a device."""
async with self.session.put(
@@ -360,72 +219,6 @@ class LedGrabCoordinator(DataUpdateCoordinator):
resp.raise_for_status()
await self.async_request_refresh()
async def _fetch_css_sources(self) -> list[dict[str, Any]]:
"""Fetch all color strip sources."""
try:
async with self.session.get(
f"{self.server_url}/api/v1/color-strip-sources",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
data = await resp.json()
return data.get("sources", [])
except Exception as err:
_LOGGER.warning("Failed to fetch CSS sources: %s", err)
return []
async def _fetch_value_sources(self) -> list[dict[str, Any]]:
"""Fetch all value sources."""
try:
async with self.session.get(
f"{self.server_url}/api/v1/value-sources",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
data = await resp.json()
return data.get("sources", [])
except Exception as err:
_LOGGER.warning("Failed to fetch value sources: %s", err)
return []
async def _fetch_scene_presets(self) -> list[dict[str, Any]]:
"""Fetch all scene presets."""
try:
async with self.session.get(
f"{self.server_url}/api/v1/scene-presets",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
resp.raise_for_status()
data = await resp.json()
return data.get("presets", [])
except Exception as err:
_LOGGER.warning("Failed to fetch scene presets: %s", err)
return []
async def _fetch_sync_clocks(self) -> list[dict[str, Any]]:
"""Fetch all synchronization clocks (with runtime state).
Older servers without the sync-clock endpoint return 404 — treat
that as "no clocks" rather than failing the whole refresh.
"""
try:
async with self.session.get(
f"{self.server_url}/api/v1/sync-clocks",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status == 404:
return []
resp.raise_for_status()
data = await resp.json()
return data.get("clocks", [])
except Exception as err:
_LOGGER.warning("Failed to fetch sync clocks: %s", err)
return []
async def push_colors(self, source_id: str, colors: list[list[int]]) -> None:
"""Push flat color array to an api_input CSS source."""
async with self.session.post(
@@ -480,6 +273,49 @@ class LedGrabCoordinator(DataUpdateCoordinator):
resp.raise_for_status()
await self.async_request_refresh()
async def start_playlist(self, playlist_id: str) -> None:
"""Start cycling a scene playlist.
The server engine runs at most one playlist at a time, so starting this
one transparently stops whichever playlist was running before.
"""
async with self.session.post(
f"{self.server_url}/api/v1/scene-playlists/{playlist_id}/start",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status != 200:
body = await resp.text()
_LOGGER.error(
"Failed to start playlist %s: %s %s",
playlist_id,
resp.status,
body,
)
resp.raise_for_status()
await self.async_request_refresh()
async def stop_playlist(self) -> None:
"""Stop the active playlist (the last applied scene stays in place).
The stop endpoint is global — it stops whichever playlist is cycling,
matching the server's single-active-playlist model.
"""
async with self.session.post(
f"{self.server_url}/api/v1/scene-playlists/stop",
headers=self._auth_headers,
timeout=self._timeout,
) as resp:
if resp.status != 200:
body = await resp.text()
_LOGGER.error(
"Failed to stop playlist: %s %s",
resp.status,
body,
)
resp.raise_for_status()
await self.async_request_refresh()
async def update_source(self, source_id: str, **kwargs: Any) -> None:
"""Update a color strip source's fields.