Files
orca/src/shared/filesystem-watch-batch-window.ts
T
JinjingandOrca 5c0195af64 Bound remote watcher fan-out and defer File Explorer refreshes (#11908)
* batch remote watcher events and defer File Explorer refreshes

Remote filesystem watcher events now batch with the shared 150ms trailing and 500ms
max-wait window, coalescing per-path like local events. File Explorer tree and
directory refreshes are scheduled with debounce and transport-aware concurrency caps
(16 local, 8 runtime, 4 SSH). Stale directory cache tracking prevents trusting
collapsed listings skipped by full refresh; they are re-read on re-expansion. Relay
implements a 15-minute idle-only grace cap for zero-PTY relays via PTY pool
lifecycle tracking, independent of explicitly configured grace time.

* fix(watch/relay): bound remote watcher fan-out and read the live relay grace

Three P1 fixes from the SSH/remote freeze audit:

- Remote watchers now debounce on the same 150/500 window as local ones
  (finding D), and every teardown path drops the trailing flush timer
  instead of letting it fire into a dead watch. The deferred send is
  wrapped so a frame disposed mid-window can't escape as a fatal
  main-process exception.
- File Explorer refreshes are scheduled and concurrency-capped rather
  than fanned out unbounded over expanded dirs (finding C). Local
  transports use a zero window, since main already coalesced the burst.
- relay.startGrace reads ptyHandler.configuredGraceTimeMs instead of the
  launch-time argv closure, so a grace raised after launch is honored.
  The branch selection moves to relay-grace-branch.ts because relay.ts
  has no exports and calls main() at import, making it untestable.
  Consequence: a host-sleep relay holding zero PTYs now exits after the
  idle cap. Pinned by test and documented in
  docs/reference/relay-grace-time-reconfiguration.md.

Also drops the duplicated 150/500/5000 constants in the runtime-RPC
batcher in favor of the shared window module.

* docs(relay): correct grace-reconfiguration line numbers after the relay.ts edit

Co-authored-by: Orca <help@stably.ai>

* refactor(file-explorer): use useMemo for paths; remove relay reference

Replace manual ref-based caching with proper React hooks for content-stable path memoization. Remove outdated relay grace-time reference documentation from code review cycle.

* rm design doc

* fix(remote-watcher): prevent stranded timer after close

An in-flight provider receive can land after the batch is torn down.
Without a guard, pushing events to a closed batch would re-arm a timer
that would never be cleared, stranding the task indefinitely. Track the
closed state and skip pushes after close().

Relay.ts comment clarifies why pool watches remain registered during
grace-period shutdown deferral — the socket server stays listening so
a reconnecting client can cancel the grace and resume.

---------

Co-authored-by: Orca <help@stably.ai>
2026-08-01 11:55:58 -07:00

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TypeScript

// Why: the main-process watcher batcher and the renderer's Explorer refresh
// scheduler share one flush window so local and remote latency can't drift.
export const WATCH_BATCH_TRAILING_MS = 150
export const WATCH_BATCH_MAX_WAIT_MS = 500