host/observer: phase 3r pure core — node/device props come from a bind

Browse Source

v3.5 §6.7. The registry `global` event announces only a fixed 13-key subset
of a Node's properties, and eight the engine depends on are never among them
(phase-5 gate failure F1/F2). The core now treats the global as an index and
takes every property from the object's bound `info`.

- `RegEvent::NodeAdded { serial, id }` is identity only; `RegEvent::NodeInfo`
  carries the properties and is both the first resolution and every later
  PROPS change for the node's lifetime (decision 2). Same split for Device
  (`DeviceAdded` / `DeviceInfo`).
- A node with no `info` is withheld from the snapshot and is a readiness
  obligation; an unresolvable bind ends in sticky `TimedOut`, fail closed
  (decision 3). Devices are keyed by serial too, so a recycled device id with
  two live claimants is ambiguous ⇒ withheld rather than guessed.
- One live-node map replaces the admitted/withheld pair; classification is
  recomputed at projection time from current inputs, since both sides of it
  now change over an object's lifetime.
- `classify` takes the bound Device's props: presence is a union with the
  Device winning (this recovers a real card whose node was never given
  `alsa.driver_name` — the phase-3 review's owed fix), while the
  non-terminal-driver denylist is a union in the safe direction.
- `apply` returns `Outcome`, the only sound place to enforce the suppression
  rule: a property update is dropped only when model state provably did not
  change, i.e. the resulting projection is identical.

Adapter: stops reading properties off Node/Device globals and emits the new
index events. Binding every Node and Device — the I/O half — is the next
commit (Codex's), so until then every node is withheld and readiness times
out by design.

Tests: 55 observer (was 38) — the prop-update matrix, readiness with node
binds, and recycled-Node-id churn (phase 3r gate rows 2–4). 195 green,
clippy -D warnings and fmt clean.

...

This commit is contained in:

mollusk

2026-07-25 18:17:48 -04:00

parent a1ac7ea8d5

commit b3d71724ae

4 changed files with 1171 additions and 315 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download Patch File Download Diff File Expand all files Collapse all files

src/host/observer/tests.rs

+733 -109

File diff suppressed because it is too large Load Diff