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ComfyUI_frontend/browser_tests/fixtures
jaeone94 fc7e6a0935 fix(terminal): resync logs console on backend reconnect (#12270)
## Summary

When the built-in logs terminal stayed open during a backend restart,
the buffer froze on pre-restart entries and live log streaming silently
stopped — only closing and reopening the panel resynced. Listen for the
api `reconnected` event and rebuild the terminal contents the same way a
fresh open would.

## Changes

- **What**:
- Extract `useLogsTerminal` composable. The SFC is now a thin shell
holding `terminal: shallowRef<Terminal>` and forwarding to the
composable, so `onMounted`/`onScopeDispose` no longer rely on the
child's emit callback timing.
- Subscribe to `api`'s `reconnected` event via `useEventListener`,
registered synchronously before any awaits. On reconnect:
`terminal.reset()` → refetch raw logs → `scrollToBottom()` →
`subscribeLogs(true)` (the backend loses the per-client subscription on
restart, so re-subscribe is required for live streaming to resume).
- Wrap in-flight resync/mount fetches in AbortControllers. Overlapping
reconnects abort the prior resync, and unmount mid-fetch suppresses
writes to the disposed xterm.
- Hide BaseTerminal whenever `errorMessage` is set so the error layout
doesn't expose an empty xterm container behind the message;
`loading=false` after both load failure and resync success so a later
successful reconnect can clear a stuck spinner.
- Migrate the load/resync error strings to vue-i18n
(`logsTerminal.loadError`, `logsTerminal.resyncError`).

## Review Focus

- **Re-subscribe is the non-obvious half of the fix** — without it, even
after the WebSocket reconnects the backend never resumes streaming logs
to this client because its subscription state was wiped on restart. The
visible "stale buffer" is only one symptom; the silent "no new logs"
symptom needed the explicit `subscribeLogs(true)` re-call in resync.
- `terminal.reset()` lives after a successful raw-logs fetch (not
before) so a failed resync leaves the prior buffer visible instead of
blanking it; resync errors surface via the same inline error message the
mount path uses.
- 8 unit tests around the composable: mount + subscribe, resync ordering
(reset → write → scroll → subscribe via `invocationCallOrder`),
in-flight resync abort on double reconnect, resync error surfacing,
mount-failure-then-recovery, unmount-mid-fetch terminal-write
suppression, listener cleanup on unmount.
- 2 E2E tests using `ws.close()` on the proxied WebSocket as the
reconnect trigger and `subscribeLogs` HTTP fetch count as the sync point
(same pattern as `wsReconnectStaleJob.spec.ts`). Red-checked: disabling
the `reconnected` listener fails exactly the two new tests, all 8
pre-existing tests stay green.

Fixes FE-712

## Screenshots

Before - (After rebooting, the console window does not update from its
state before the reboot must remount the console window for it to
resync.)


https://github.com/user-attachments/assets/b1e49c2c-89a4-4a4a-82b4-064412acee12

After - (The console window syncs automatically after a reboot.)


https://github.com/user-attachments/assets/54b582c5-ad42-41c0-9886-18f4495859da




┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-12270-fix-terminal-resync-logs-console-on-backend-reconnect-3606d73d3650812fb13fd1934c632344)
by [Unito](https://www.unito.io)
2026-05-19 01:55:11 +00:00
..
2024-10-25 08:29:02 -04:00