Step 5, read path — Option 2 of the two shapes discussed: the derived
blob is consulted LAST, after the sidecar, not first.
Read order is now
moka -> ext-{file_id}.jpg -> {blob_hash}.webp on disk -> derived blob
For every thumbnail already on disk the new branch is never reached, so
the database stays off the hot path and a fault in it cannot break a
working gallery. It answers only what disk cannot: a thumbnail rendered
by another instance, or a box whose sidecar was never populated. Legacy
content keeps serving from disk until `derived_import` migrates it.
That inverts the plan's stated order deliberately. Derived-blob-first is
right for the END state, because it is what lets the sidecar be deleted;
sidecar-first is right transitionally, because the risky reordering
should happen after the table has been seen serving real reads. The flip
belongs in the release that removes the sidecar, and the comment at the
branch says so.
The existing precedence is preserved and now documented: the file-keyed
client upload (ext-) is checked BEFORE the content-keyed server render.
That ordering is a security property, not a preference — content-keyed
artifacts are shared across every file with that content, so checking
the file-keyed one first is what keeps one user's uploaded preview from
ever being served for another user's identical file.
Shape notes:
* `find_derived_blob` lands on DedupPort/DedupService as the read
counterpart of `store_derived_blob`, so ThumbnailService needs no pool
field — and therefore ThumbnailService::new, DI and three tests are
untouched.
* It carries `content_type`, which is what will retire the byte-sniffing
in the handlers once reads are table-primary.
* The parameter is `Option<&DedupService>`, concrete rather than
`&dyn DedupPort`: DedupPort uses native `async fn` and so is not
dyn-compatible, and ThumbnailPort is never used as a trait object
(checked) — both handlers hold the concrete Arc. `None` means
sidecar-only, which is exactly today's behaviour and what the abstract
port impl passes.
fmt, clippy --all-features --all-targets, 35 unit tests clean.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Benchmark-gated, same rule as ROUND2-21: every change ships with a
BEFORE/AFTER counting-allocator benchmark and a byte/-value equivalence
gate; an AFTER that fails to reduce allocations exits non-zero (rollback).
See benches/ROUND22.md and examples/bench_round22_micro.rs. All arms
no-Postgres.
- H1: the hot GET handlers (get_thumbnail, download_file, list_files_query,
list_photos, NextCloud preview, public-share download/access) take
`req: Request` last and read `req.headers()` by borrow instead of axum's
HeaderMap extractor, whose FromRequestParts impl clones the whole request
header table just to read 1-3 headers (the ROUND14 §A4 middleware pattern,
finally propagated to the handlers). 2 -> 0 allocs/req · 9.95x wall.
- W1: native WebDAV write_etag_quoted — the etag emitter for every /webdav/
PROPFIND row (per file AND per folder, up to 500/page) — emits the quotes
as borrowed pre-escaped " text events instead of escaping a "{etag}"
String (the ROUND20 §C1 / ROUND21 §R4 pattern). 3 -> 0 allocs/row.
- C1: CalDAV getetag routed through a shared write_quoted_etag helper across
all 5 sites (3 per-event + 2 per-calendar); the now-dead etag: &mut String
buffer threaded through write_event_response/standard/requested props + the
two per-page buffers removed. 2 -> 0 allocs/row.
- D1: FileDto::from reuses the moved parts.blob_hash instead of cloning it
via the content_hash() getter (the ROUND19/20 move-not-clone sweep missed
it — hash/etag are read before into_parts()). Per file row of every
listing. 1 -> 0 allocs/row.
- E1: CalendarEvent::update_time_range/update_all_day stamp timed
DTSTART/DTEND via fmt::compact_ical_utc stack render (chrono fallback out
of range) instead of the %Y%m%dT%H%M%SZ strftime interpreter. 4 -> 0.
- S1: ShareItemType::try_from uses eq_ignore_ascii_case instead of a
throwaway to_lowercase() String. 1 -> 0 allocs/parse.
Verified: cargo clippy --features bench --all-targets -D warnings clean,
cargo fmt --all --check clean, cargo test --lib --features bench = 529
passed / 0 failed (incl. the OpenAPI-spec-validity test guarding the H1
utoipa-handler signature change).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DKyQ4AnYtgp1JtjzweyMeo
Backend (each change benchmark-gated with BEFORE replicas + equivalence
gates; see examples/bench_round11_micro.rs, bench_round11_queries.rs,
bench_log_writer.rs and benches/ROUND11.md — final numbers land in the
follow-up doc commit):
- StoragePath re-representation: single canonical joined String, segments
derived on demand; File/Folder drop the duplicated path_string field
(4000→1000 allocs per 500-row listing page)
- Display classifier fusion: classify_display shares one stack-lowered
extension across the three decision trees; call sites in FileDto,
folder/favorites/recent handlers, trash, path-resolver (+ interning
where Arc::from was still used)
- /status.php and /openapi.json memoized into OnceLock<Bytes> (openapi
rebuilt a 171 KiB spec per request: 2.8 ms → 18 ns)
- NC upload-session PROPFIND: write! + pre-sized body + stack RFC2822
dates (2.3-2.6x, 2582→772 allocs at 256 chunks)
- REST download: dead FileDto clone removed (capture mime/size + move)
- CalendarEventDto/TrashedItem into_parts moves (11 KiB ical_data memcpy
gone per CalDAV row); CardDAV getlastmodified stack render
- 4xx path: borrowed ErrorResponse serialize, ErrorKind::as_str,
not_found/already_exists clone kill
- vCard emit via write!; search page moved out with into_iter skip/take;
content-hit UUIDs parsed once; group last-user check via HashSet
- RateLimiter: lock-free get + insert (and_upsert_with variant REJECTED
by benchmark); CSRF token borrow-compare + borrowed cookie extraction
- Thumbnail/preview ETags built from as_str (Debug-identical bytes)
- Encrypted backend: encrypt_in_place_detached single-buffer write path,
chunk-sized reserve in collect_stream; retry labels made lazy
- PG: deferred upload registration 3→1 round-trips (persist_file CTE
template); direct_grant_cache for Calendar/AddressBook/Playlist authz
(single-flight + set_role/clear_role invalidation); expand_user
tokio::join!; geo clusters min(uuid)::text; recluster face assignment
batched into one UNNEST update
- People recluster cosine: norms precomputed once (bit-identical gate)
- NC capabilities poll logs demoted to debug; tracing-appender dep added
for the log-writer benchmark
Frontend:
- ResourceList.selectedEntries O(N)-per-toggle → id-index projection
O(k log k); favorites/recent consume the batchToolbar snippet param and
drop their duplicate filter + dead selectedIds mirror
- Recent: star state via new favoriteIds prop — a star click no longer
rebuilds all N entries
- admin timeAgo >30d fallback uses the cached Intl.DateTimeFormat
- vitest gates in src/lib/components/round11.bench.test.ts
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ABhTEHuGujvwoodh67Kga7
repl user_id by caller has read access in readonly functions
using CALLER_CAN_READ_DRIVE constant
ensure webdav preview is using the permission handler
Thumbnails are now generated eagerly as lossy WebP (the primary codec) and
served to clients that advertise `Accept: image/webp`; JPEG is kept as a lazy
fallback for older clients and NextCloud, generated on first request and then
cached like WebP.
- ThumbnailFormat{Webp,Jpeg} enum threaded through encode/render/generate, the
on-disk path ({hash}.webp / {hash}.jpg), the moka cache key
(file_id, size, format), and cleanup (both formats removed).
- file_handler: parse Accept -> format, format-keyed ETag, `Vary: Accept` on
every response (incl. 304) so shared caches never serve the wrong codec;
Content-Type is byte-sniffed (infer) so it always matches the bytes.
- preview_handler (NextCloud) pins JPEG.
- webp = "0.3" (vendored libwebp via cc, no system dependency).
WEBP_QUALITY=82, chosen via a quality sweep (bench Table E1): SSIM within
~0.005 of JPEG q80 (imperceptible at thumbnail scale) for ~62% fewer bytes. On
the photo-realistic bench corpus the full set (3 sizes x 3 photos) drops 65.6%
(213->73 KB); real photos with edges/text land nearer ~25-40%. Encode is +5ms,
paid once in the eager background generator (off the request path).
The bench corpus is now photo-realistic (per-channel sums of low-frequency
sinusoids) instead of white noise, which had distorted codec byte ratios.
Methodology + numbers in benches/WEBP.md.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Request-path thumbnail generation (REST get_thumbnail and NC preview)
read the full source blob into RAM and decoded it with no concurrency
bound — a first-view gallery of K images stacked K full-size buffers
and K parallel decodes on the blocking pool. The background hook had
the inverse ordering problem: it read the blob eagerly and only then
queued on the decode semaphore, so N concurrent uploads held N
originals in memory while waiting.
All three paths now acquire the decode semaphore first and read the
blob under the permit, capping peak RAM at permits x image size:
- new ThumbnailService::get_thumbnail_from_blob defers the blob read
into the moka init closure (cache and disk hits never touch the
blob); both handlers use it and no longer pre-read.
- get_thumbnail_from_bytes (direct-bytes variant) now also takes a
permit before decoding; shared generate_and_persist core keeps the
two entrypoints duplicate-free.
- generate_all_sizes_background_from_blob (renamed from _from_bytes)
checks blob existence and disk-dedup state, then acquires the
permit, then reads; the redundant pre-read spawn wrapper in
ThumbnailRefreshHook is gone.
https://claude.ai/code/session_01QxwJDHqQhbMkHK333QtMme
Thumbnails are now keyed by blob_hash on disk so identical files share
a single set of thumbnails (icon/preview/large). For 4000 duplicate
files with the same content, this reduces thumbnail storage from 12,000
files to just 3.
Changes:
- get_thumbnail_path() keys by blob_hash instead of file_id
- get_thumbnail(), get_cached_thumbnail(), generate_all_sizes_background()
accept blob_hash parameter for disk dedup
- generate_all_sizes_background() fast path: if blob-hash thumbnails
already exist on disk, skip image processing entirely and just
populate moka cache for the new file_id
- delete_thumbnails() only invalidates moka cache (shared disk
thumbnails must not be deleted when one file is removed)
- delete_blob_thumbnails() added for GC; garbage_collect() now cleans
up orphaned thumbnail files alongside blob files
- External thumbnails (video frames) stored as ext-{file_id}.jpg
since they are client-generated and not dedup-able
- ThumbnailPort trait updated with blob_hash parameters
- All handler call sites updated (file_handler, preview_handler)
- Tests updated for new signatures
Add column-gap to list header/items, prevent rubber-band selection from
swallowing clicks on list headers and file items, preserve rubber-band
selection after mouseup, and extract type aliases to resolve clippy
type_complexity warnings.
- Add /remote.php/dav discovery endpoint for Android app server detection
- Add /index.php/204 connectivity check endpoint (returns 204 No Content)
- Redirect login flow to nc:// deep link for mobile credential delivery
- Support GET/HEAD on folders (NC clients use as existence checks)
- Recursive MKCOL to create missing parent directories
- Fix single-file PROPFIND returning empty multistatus response
- Strip instance suffix from preview fileId (e.g. "00000326ocnca")
- Add recommendations stub endpoint
Implement a complete Nextcloud client compatibility layer so that
Nextcloud desktop/mobile sync clients can connect to OxiCloud.
Key additions:
- Login Flow v2 (device auth) with OIDC bridge support
- WebDAV handler compatible with Nextcloud clients (PROPFIND, GET,
PUT, DELETE, MKCOL, MOVE, COPY, HEAD, PROPPATCH)
- OCS API endpoints (user info, capabilities, notifications stubs,
sharees, unified search)
- Basic Auth middleware with app password verification, account
lockout integration, and blake3-keyed auth cache
- App password management: create, list, revoke via both native
API (JWT-authenticated profile page) and Nextcloud OCS endpoints
- Nextcloud file ID mapping (oc:fileid) with persistent DB storage
- Chunked upload support (Nextcloud v2 chunking protocol)
- Trashbin WebDAV interface
- Avatar (SVG placeholder) and preview (redirect) handlers
- User profile page with app password management UI
- URL user validation on all DAV routes (403 on mismatch)
- Database schema for app_passwords and nextcloud_object_ids tables
All services are behind a `nextcloud.enabled` config flag and
cleanly separated under src/interfaces/nextcloud/.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Edouard Vanbelle