Files
Home-Assistant/custom_components/ha_mcp_tools/update.py
T
2026-07-17 10:12:15 -04:00

223 lines
9.7 KiB
Python

"""Update platform for the in-process server package (issue #1760).
Exposes one ``update`` entity per "server" config entry for the ha-mcp server
package it runs in-process, backed by :class:`~.coordinator.ServerVersionCoordinator`.
The entity stays populated whether or not automatic updates are on - see the
coordinator's docstring for why.
"""
from __future__ import annotations
import asyncio
import logging
from typing import TYPE_CHECKING, Any
from aiohttp import ClientError
from awesomeversion import AwesomeVersion, AwesomeVersionException
from homeassistant.components.update import UpdateEntity, UpdateEntityFeature
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers.aiohttp_client import async_get_clientsession
from homeassistant.helpers.device_registry import DeviceInfo
from homeassistant.helpers.update_coordinator import CoordinatorEntity
from .const import (
DATA_BRINGUP_TASK,
DATA_PENDING_INSTALL_VERSION,
DATA_UPDATE_COORDINATOR,
DEFAULT_AUTO_UPDATE,
DIST_NAME_DEV,
DOMAIN,
OPT_AUTO_UPDATE,
)
from .coordinator import ServerVersionCoordinator
from .embedded_server import _installed_dist_version
if TYPE_CHECKING:
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
_LOGGER = logging.getLogger(__name__)
# GitHub releases API for the release-notes surface (stable channel only - the
# dev channel has no tagged releases, see release_url / supported_features).
_RELEASES_URL = (
"https://api.github.com/repos/homeassistant-ai/ha-mcp/releases?per_page=30"
)
_RELEASE_NOTES_TIMEOUT_SECONDS = 15
async def async_setup_entry(
hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
) -> None:
"""Add the single server-package update entity for this config entry."""
coordinator: ServerVersionCoordinator = hass.data[DOMAIN][DATA_UPDATE_COORDINATOR]
async_add_entities([ServerUpdateEntity(coordinator, entry)])
class ServerUpdateEntity(CoordinatorEntity[ServerVersionCoordinator], UpdateEntity):
"""Update entity for the ha-mcp server package the "server" entry runs."""
_attr_has_entity_name = True
_attr_translation_key = "server_update"
def __init__(
self, coordinator: ServerVersionCoordinator, entry: ConfigEntry
) -> None:
"""Bind to the coordinator and the owning config entry."""
super().__init__(coordinator)
self._entry = entry
self._attr_unique_id = f"{entry.entry_id}_server_update"
@property
def device_info(self) -> DeviceInfo:
"""Group under one device per config entry; sw_version = installed."""
return DeviceInfo(
identifiers={(DOMAIN, self._entry.entry_id)},
name="HA-MCP Server",
manufacturer="homeassistant-ai",
model="ha-mcp (in-process server)",
sw_version=self.installed_version,
configuration_url="https://github.com/homeassistant-ai/ha-mcp",
)
@property
def installed_version(self) -> str | None:
"""Return the installed server-package version, or None if unknown."""
data = self.coordinator.data
return data.installed if data is not None else None
@property
def latest_version(self) -> str | None:
"""Return the newest PyPI version, or None if unknown/unresolvable."""
data = self.coordinator.data
return data.latest if data is not None else None
@property
def auto_update(self) -> bool:
"""Reflect the entry's automatic-update option."""
return bool(self._entry.options.get(OPT_AUTO_UPDATE, DEFAULT_AUTO_UPDATE))
@property
def release_url(self) -> str | None:
"""Stable: the tagged GitHub release. Dev: the commit history (no tags)."""
data = self.coordinator.data
if data is None:
return None
if data.dist == DIST_NAME_DEV:
return "https://github.com/homeassistant-ai/ha-mcp/commits/master"
if data.latest is None:
return None
return f"https://github.com/homeassistant-ai/ha-mcp/releases/tag/v{data.latest}"
@property
def supported_features(self) -> UpdateEntityFeature:
"""RELEASE_NOTES only on the stable channel — dev builds have no tags."""
features = UpdateEntityFeature.INSTALL
data = self.coordinator.data
if data is not None and data.dist != DIST_NAME_DEV:
features |= UpdateEntityFeature.RELEASE_NOTES
return features
async def async_release_notes(self) -> str | None:
"""Concatenate GitHub release bodies between installed and latest.
Advisory-only (same reasoning as embedded_setup's
_async_check_component_compat): a GitHub fetch failure, rate limit, or
unexpected payload shape must degrade to None - the UI then falls back
to :attr:`release_url` - rather than break the update dialog.
"""
data = self.coordinator.data
if data is None or data.installed is None or data.latest is None:
return None
try:
installed = AwesomeVersion(data.installed)
latest = AwesomeVersion(data.latest)
session = async_get_clientsession(self.hass)
async with asyncio.timeout(_RELEASE_NOTES_TIMEOUT_SECONDS):
async with session.get(_RELEASES_URL) as resp:
resp.raise_for_status()
releases = await resp.json()
notes: list[tuple[AwesomeVersion, str]] = []
for release in releases:
tag = str(release.get("tag_name") or "").removeprefix("v")
try:
version = AwesomeVersion(tag)
except AwesomeVersionException:
continue
if installed < version <= latest:
notes.append((version, str(release.get("body") or "")))
except (ClientError, TimeoutError) as err:
# Expected transients (GitHub unreachable, rate-limited, slow) —
# quiet; the dialog falls back to release_url.
_LOGGER.debug("HA-MCP release-notes fetch failed: %s", err)
return None
except Exception:
# An unexpected payload shape (TypeError/AttributeError in the
# parse loop) is a bug or a GitHub API change — logged visibly per
# the repo's convention (review finding), still degrading to the
# release_url fallback rather than breaking the update dialog.
_LOGGER.warning("HA-MCP release-notes fetch failed", exc_info=True)
return None
if not notes:
return None
notes.sort(key=lambda item: item[0], reverse=True)
return "\n\n---\n\n".join(body for _, body in notes)
async def async_install(
self, version: str | None, backup: bool, **kwargs: Any
) -> None:
"""Reinstall pinned to ``version`` (or the latest known build).
With auto-update off, ``_resolve_pip_spec`` pins the install to the
currently-installed version, so a bare reload would just reinstall the
same build. The one-shot pending-install marker overrides that pin for
this single reload; embedded_server clears it when it consumes it (one
marker buys one attempt). The reload only completes entry SETUP — the
pip install runs in the reloaded entry's background bring-up — so this
waits for that bring-up and verifies the requested version actually
landed; returning at reload time would report success for an install
that can still fail (review finding).
"""
data = self.coordinator.data
target = version or self.latest_version
if target is None:
raise HomeAssistantError("No target version available to install.")
# Broad except is intentional here (unlike this repo's usual narrow
# convention): async_install feeds Home Assistant's update UI, which
# expects a HomeAssistantError for ANY failure rather than an opaque
# traceback in the install dialog. Logged with traceback first so a
# genuine bug still reaches the log (review finding).
try:
new_data = {**self._entry.data, DATA_PENDING_INSTALL_VERSION: target}
self.hass.config_entries.async_update_entry(self._entry, data=new_data)
await self.hass.config_entries.async_reload(self._entry.entry_id)
# The reloaded entry's bring-up task does the actual install; it
# contains its own failures (files repair issues instead of
# raising), so awaiting it tells us the attempt is over, not that
# it worked — the version read below is the success check.
bringup = self.hass.data.get(DOMAIN, {}).get(DATA_BRINGUP_TASK)
if bringup is not None:
await bringup
installed: str | None = None
if data is not None:
installed = await self.hass.async_add_executor_job(
_installed_dist_version, data.dist
)
except Exception as err:
_LOGGER.exception("HA-MCP server update install failed")
raise HomeAssistantError(
f"Could not install the HA-MCP server update: {err}"
) from err
# Outside the broad except: these raises must reach the UI as-is, not
# get re-wrapped into the generic message.
if data is not None and installed != target:
raise HomeAssistantError(
f"The HA-MCP server update to {target} did not complete "
f"(installed: {installed or 'none'}). See Settings > Repairs "
"for the failure details."
)