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fix(file-sync): rollback _pushed_hashes on sync failure

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Snapshot _pushed_hashes alongside _synced_files before the try block
so both are restored atomically on failure. Previously a mid-sync
exception (e.g. host file deleted between upload and hash) would leave
_pushed_hashes partially updated while _synced_files rolled back,
causing sync_back() to make wrong change-detection decisions.
This commit is contained in:
alt-glitch 2026-04-11 18:22:31 -07:00
parent a562550af3
commit 6aba50f5ba
1 changed files with 2 additions and 0 deletions
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2
tools/environments/file_sync.py
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@ -161,6 +161,7 @@ class FileSyncManager:
# Snapshot for rollback (only when there's work to do)
prev_files = dict(self._synced_files)
prev_hashes = dict(self._pushed_hashes)
if to_upload:
logger.debug("file_sync: uploading %d file(s)", len(to_upload))
@ -193,6 +194,7 @@ class FileSyncManager:
except Exception as exc:
self._synced_files = prev_files
self._pushed_hashes = prev_hashes
self._last_sync_time = time.monotonic()
logger.warning("file_sync: sync failed, rolled back state: %s", exc)