Five issues kettui flagged on PR #377:
- Worker race (reorganize_queue.py): _next_queued() picked an item and
released the lock, then re-acquired to flip status='running'. A
cancel() landing in that window marked the item cancelled but the
worker still ran it. Replaced with _claim_next_or_wait() that picks
AND flips under one lock acquisition.
- Wakeup race (reorganize_queue.py): _wakeup.clear() after the empty
check could lose an enqueue's _wakeup.set(), parking a freshly-queued
album for up to 60 seconds. Replaced Lock + Event with a single
threading.Condition; cond.wait() releases and re-acquires atomically
on notify.
- Bulk dedupe (reorganize_queue.py:enqueue_many): looped single-item
enqueue, so a duplicate album_id later in the same batch could slip
through if the worker finished the first copy before the loop
reached the second. Now holds the lock for the whole batch and tracks
a per-batch seen set, so intra-batch duplicates dedupe against each
other and not just pre-existing items.
- Preview button stuck disabled (library.js:loadReorganizePreview):
early returns and thrown errors skipped the re-enable line. Moved
state into a canApply flag committed in finally, so any exit path
lands the button correctly.
- DB helpers swallowing failures (music_database.py): get_album_display_meta
and get_artist_albums_for_reorganize used to catch every Exception
and return None / [], so a real DB outage masqueraded as "album not
found" / "no albums". Now lets exceptions bubble; the route layer
already wraps them as 500.
Tests:
- test_cancel_and_run_are_mutually_exclusive — hammers enqueue+cancel
pairs and asserts the invariant that no successfully-cancelled item
ever ran (catches regressions to the atomic pick).
- test_enqueue_many_dedupes_batch_internal_duplicates — pins the
intra-batch dedupe.
- test_get_album_display_meta_propagates_db_errors and
test_get_artist_albums_for_reorganize_propagates_db_errors — pin
the bubble-up behavior.
Changelog updated in helper.js and version modal.
Replaces the single-slot "one reorganize at a time, return 409 on collision"
model with a per-user FIFO queue. Buttons stay clickable, "Reorganize All"
is one backend call instead of an N-call JS loop, and a status panel mounted
at the top of the artist actions bar shows live progress (active item,
queued count, recent completions) with per-item cancel buttons.
Backend
- core/reorganize_queue.py: singleton queue + worker thread, dedupe-on-
enqueue, cancel rules (queued cancellable, running not), enqueue_many
for bulk operations, progress fan-out via update_active_progress
- core/reorganize_runner.py: factory builds the worker's runner closure
with injected dependencies. Reads config per-call so changing the
download path in Settings takes effect on the next reorganize without
a server restart
- database/music_database.py: get_album_display_meta and
get_artist_albums_for_reorganize — moves the SQL out of route handlers
- web_server.py: thin enqueue/snapshot/cancel/clear endpoints, runner
registration at module load. Old _reorganize_state globals + status
endpoint deleted. Static-asset cache buster (?v=<server-start>)
added so JS/CSS updates ship live without users clearing cache
Frontend
- webui/static/library.js: status panel mount, polling (1.5s when
active, 8s when idle), expand/collapse, per-item cancel, debounced
enhanced-view reload (one reload per artist batch instead of N).
Per-album reorganize button paints with queued/running indicator
and short-circuits to a toast when the album is already in queue
- webui/static/style.css: panel + button styling matching the existing
glass-UI accents
- webui/static/helper.js + version modal: WHATS_NEW entry
Tests (22 new)
- tests/test_reorganize_queue.py (19 tests): FIFO order, dedupe,
per-item source, cancel rules, continue-on-failure, snapshot
shape, progress propagation, bulk enqueue
- tests/test_reorganize_runner.py (4 tests): per-call config reads,
setup-failure summary, dependency injection, progress fan-out
- tests/test_reorganize_db_methods.py (7 tests): SQL JOIN behavior,
ordering, fallback for blank strings, artist isolation
Full suite 549 passed in 27s.
