fix(ecstore): make body-cache hook re-registrable + add e2e regressions
ODC-21 (backlog#1126): the GET body-cache hook lived in a first-wins
OnceLock. When AppContext is rebuilt (config reload, test re-init) a fresh
ObjectDataCacheAdapter is constructed and re-registered, but the OnceLock
kept ecstore's GET probe pointed at adapter #1 while every usecase-layer
fill and invalidation targeted adapter #2 — silently degrading the feature
to a 0% hit rate with no error, log, or metric, and stranding entries in the
unreachable cache until their TTL.
Replace the slot with RwLock<Option<Arc<dyn GetObjectBodyCacheHook>>> so
re-registration atomically swaps to the newest adapter, and log at WARN when
a swap replaces a *different* instance (Arc::ptr_eq). RwLock over
ArcSwapOption because arc-swap's RefCnt is impl<T> (Sized, thin *mut T) and
cannot hold an Arc<dyn Trait> without a sized newtype wrapper; the probe
reads the slot once per full-object GET but only clones an Arc, negligible
next to the metadata quorum fan-out already done before the probe. Add a
test-only clear_get_object_body_cache_hook so tests register/unregister
deterministically.
With the hook now re-registrable, add true end-to-end regressions that drive
get_object_reader (not the full_object_plaintext_len predicate) against a
real erasure-coded, genuinely-compressed object via the blackbox
make_local_set_disks harness, with a stand-in hook playing the app-layer
cache (the injection point production uses; the adapter itself lives above
ecstore). These close the gap the predicate-only tests left — a caller that
opens a new shortcut serving the cached body directly, the original form of
both P0s:
- backlog#1108: a raw_data_movement_read must yield the STORED (compressed)
bytes, never the cached plaintext.
- backlog#1109: a compressed cache hit must publish the DECOMPRESSED length
as object_info.size (the UploadPartCopy invariant), with the streamed
length matching.
- backlog#1146: a restore read (restore_request.days) must serve STORED
bytes, not the cache.
Mutation-verified each e2e test bites: dropping the raw_data_movement_read
gate serves plaintext (fails #1108); removing the hit-site size republication
publishes 2972 vs 660000 (fails #1109); dropping the restore gate serves
plaintext (fails #1146).
Co-authored-by: heihutu <heihutu@gmail.com>
perf(get,heal): land verified fixes for backlog #800-#804
Five fixes from the GET-path performance audit and scanner/heal
completeness audit (rustfs/backlog#800..#804), each verified locally:
- backlog#800 (heal checkpoint O(N^2)): ResumeCheckpoint object sets are
now HashSet (Vec::contains was O(n) per healed object; 1.5ms at n=1M
vs 11ns measured), and per-object checkpoint/resume-state persistence
is batched (1000 mutations / 5s) instead of rewriting the whole file
per object. complete_page() prunes the sets at page boundaries so
memory stays bounded; positions still persist unconditionally and
legacy Vec-format checkpoints still deserialize.
- backlog#801 (DiskInfo.healing never set): erasure-set heal now writes
a healing marker (.rustfs.sys/healing.bin) on the disks it rebuilds
(endpoints plumbed via HealRequest/HealTask.heal_endpoints from the
auto disk scanner) and clears it on success. LocalDisk::disk_info
surfaces the marker, so scanner heal coordination, lock selection and
admin/metrics healing counts see the rebuild.
- backlog#802 (cache probe after data read): new GetObjectBodyCacheHook
in ecstore lets the app-layer object data cache serve the body inside
get_object_reader, after metadata quorum resolution (etag known) but
before the erasure shard read/decode. Previously a hit still paid the
full disk read. Hook is None/no-op when the cache is disabled.
- backlog#803 (GET hot-path redundant work): ObjectInfo is cloned for
event notification only when an event will actually be built (GET and
HEAD paths; events are currently suppressed so the clone was pure
waste); get_opts/put_opts/del_opts resolve bucket versioning with one
metadata-sys lookup instead of two; skip_verify_bitrot and
get_lock_acquire_timeout env reads are cached via OnceLock; the
io-priority metric is no longer double-counted; GetObject input fields
are cloned selectively instead of cloning the whole input.
- backlog#804 (disk permit starvation): the disk-read permit wait is now
bounded (RUSTFS_OBJECT_DISK_PERMIT_WAIT_TIMEOUT, default 5s, 0 =
previous unbounded behavior); on timeout the GET proceeds without a
permit and the bypass is counted. DiskReadPermitReader also releases
the permit at body EOF instead of holding it until the client drops
the stream.
Verification: make pre-commit; cargo clippy -D warnings on the four
changed crates; full rustfs lib suite (2096 tests) green; rustfs-heal
lib suite green with new unit tests for checkpoint pruning/legacy
format/throttle, permit EOF release, and the cache hook (hit + SSE
skip). The heal_integration_test and one set_disk listing test fail
identically on unmodified main (pre-existing global-state ordering
flakes, verified via git stash A/B).
Co-authored-by: houseme <housemecn@gmail.com>
houseme