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Stefan Agner
a973d22e35
* Derive App state from container state
The App.state setter mixed two responsibilities: it both mutated a
private `_state` field and dispatched side effects (WebSocket events,
issue dismissal, startup_event signaling). On top of that, an installed
but never-started app stayed in AppState.UNKNOWN forever, because the
attach() image-only fallback never fires a container state-change event
and the AppState therefore kept its constructor default. Conceptually,
ContainerState.UNKNOWN ("container does not exist") and AppState.UNKNOWN
("nothing observed yet") happened to share a name but meant different
things, which made the distinction easy to lose.
Make App.state a pure derived property. The source of truth is the last
observed ContainerState (cached on the App), plus a sticky operation-
error flag for start/stop failures that the docker event stream cannot
reflect. When no container has been observed yet, the derivation falls
back to install signals: an attached instance (image present) is
STOPPED, otherwise UNKNOWN. As a side effect, an installed-but-never-
started app now correctly reports STOPPED instead of UNKNOWN.
container_state_changed updates the cached container state and routes
all side effects through a single _emit_state_change helper that diffs
old vs new derived state. The two start/stop failure paths route
through _set_operation_error. Uninstall resets the cached signals so
the derivation naturally returns UNKNOWN.
Tests use a new tests/common.force_app_state helper that pokes the
underlying signals directly; the production class no longer carries
test-only setters.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* Fix App state drive to AppState.UNKNOWN
* Unify state mutation through _update_state
Previously, state-driving signal changes were spread across two helpers
(_set_operation_error, _emit_state_change(old_state)) and required each
caller to capture self.state before mutating a private field — leaking
implementation details to call sites and raising the "why am I emitting
the old state?" question pointed out in code review.
Replace both helpers with a single _update_state(*, container_state=,
operation_error=) entry point. Callers describe what changed via
keyword arguments (None leaves a signal untouched); the helper captures
the previous state, applies the updates, recomputes the derived state
and emits side effects if anything changed.
Diff against a tracked _last_state instead of a freshly derived
"current" state, so that an out-of-band mutation between updates does
not silently shift the comparison baseline. The concrete case is
App.uninstall: instance.remove() clears the docker meta mid-flow, which
would otherwise reshape the derivation (RUNNING with no healthcheck
becomes STARTED instead of STARTUP) and suppress the STARTUP transition
that resolves the start-wait task. As a side effect, the initial
UNKNOWN -> STOPPED transition on attach is also now reliably emitted.
Switch the uninstall path to ContainerState.UNKNOWN ("we know there is
no container") rather than the constructor sentinel None.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
* Cache app state instead of deriving on every read
Building on the previous commit, make App.state a plain read of a
cached _state field rather than re-deriving on every property access.
The derivation moves to _derive_state(), and _update_state() is the
sole place that recomputes and assigns _state, so the value consumers
read always matches what was last emitted to listeners.
This removes the _last_state bookkeeping introduced previously: with a
single cached value there is no longer a separate "derived now" vs
"last emitted" distinction to reconcile, and out-of-band mutations
(e.g. instance.remove() clearing _meta during uninstall) can no longer
silently shift what state returns between updates.
Call _update_state() at the end of load() so the cached state settles
once attach() has run. Image-only attaches do not fire a docker event,
so without this an installed app would stay in the constructor-default
UNKNOWN until first start; this also makes the initial transition on
attach observable to listeners.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* Pass operation error to _derive_state instead of storing it
The two state-driving signals were not symmetric. _container_state is
genuinely persisted state ("the last thing docker told us") that
re-derivation legitimately reads across calls. _operation_error, on the
other hand, is a momentary "force ERROR for this transition" signal; the
persistence of an error condition already lives in the cached _state.
Storing it as an instance attribute implied a sticky cross-call behavior
that no call path actually exercised: every caller either set it
explicitly right before deriving (start/stop failures, container events)
or ran argless only at load time, where no failure has occurred.
Drop the _operation_error field and pass operation_error as a parameter
to _derive_state(), defaulting to False in _update_state(). A container
observation now supersedes a prior error implicitly via the default,
which lets the container-event and uninstall call sites drop their
explicit operation_error=False.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* Settle load state synchronously from current_state
The argless _update_state() settle at the end of load() raced attach()'s
container-state event. attach() fires DOCKER_CONTAINER_STATE_CHANGE via
the bus, which schedules the container_state_changed listener as a task
rather than running it inline. In the deprecated-arch early-return path
there is no await between attach() and the settle, so the listener had
not run yet: _container_state was still None and the settle derived
STOPPED (instance attached) — emitting a transient UNKNOWN->STOPPED even
for a running container before the listener corrected it. The main path
only avoided this incidentally, by having awaits (check_image,
save_persist) in between for the listener to run.
Derive the load-time state synchronously from instance.current_state()
instead of relying on the asynchronously delivered event. current_state()
returns the real container state, or UNKNOWN when only an image is
present (which derives to STOPPED), so both paths settle correctly
without racing the event.
Add a regression test that loading a running container settles to
STARTED, and mock current_state() in the state-listener test which
relies on a clean UNKNOWN baseline.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Home Assistant Supervisor
First private cloud solution for home automation
Home Assistant (former Hass.io) is a container-based system for managing your Home Assistant Core installation and related applications. The system is controlled via Home Assistant which communicates with the Supervisor. The Supervisor provides an API to manage the installation. This includes changing network settings or installing and updating software.
Installation
Installation instructions can be found at https://home-assistant.io/getting-started.
Development
For small changes and bugfixes you can just follow this, but for significant changes open a RFC first. Development instructions can be found here.
Release
Releases are done in 3 stages (channels) with this structure:
- Pull requests are merged to the
mainbranch. - A new build is pushed to the
devstage. - Releases are published.
- A new build is pushed to the
betastage. - The
stable.jsonfile is updated. - The build that was pushed to
betawill now be pushed tostable.
