Files
puter/src/backend/clients/event
Daniel Salazar ecef154630 refactor(services): page fs subtree walks, gate share fan-out, one fs ACL helper (#4190)
* refactor(acl): read ancestor chains from FSEntryStore and share one fs ACL helper

getAncestorChain (split a path, batch-read the entries) moves to
FSEntryStore, with getAncestors for callers that want the rows. Services
read it from the store instead of calling FSService sideways;
FSService.getAncestorChain stays for drivers and extensions.

ACLService gains fsDescriptor (memoized chain), assertFsAccess,
assertFsCreate and refusal, plus the pure aclRefusal mapping. The eight
hand-rolled descriptor and safe-error copies in FSService, ShareService,
events/authorization, FSController, legacyFsHelpers, LegacyFSController,
AuthController and WebDAVController use them. Each route keeps its
status, legacyCode and message: fs routes answer access_denied on a 403,
the legacy routes still hide refusals from apps as 404, share and events
keep forbidden and their own 404 text.

* perf(fs): page recursive deletes and batch their event dispatch

A recursive delete read every descendant into memory, and an empty-check
for a non-recursive one did the same. It now walks the subtree a page at a
time in descending path order (children before the directory holding
them, so the parent_id cascade never takes a row before it is handled),
deleting objects and rows and publishing each page as it goes. A
non-recursive delete probes with one LIMIT 1 query.

Removals publish once per entry, after the row is gone (the same change
as the open fix for the double emit), with one surviving-ancestor chain
read at most once for the whole subtree. Events-API dispatch for a batch
runs as one background task at bounded concurrency instead of a
fire-and-forget promise per entry.

FSEntryStore gains hasDescendants and listDescendantsInOrder (keyset
paged by path, then id).

* perf(fs): copy directories a level at a time

A directory copy walked every descendant in memory and copied them one
by one: an insert per directory and, per file, an S3 CopyObject, a
batchCreateEntries of one and its read-back. It now pages the source in
ascending path order (parents before children) and takes each page a
depth at a time: rows for directories, links and empty files at bounded
concurrency, then the depth's S3 copies at bounded concurrency and one
batchCreateEntries for all of them. A single-file copy goes through the
same path.

A failed S3 copy still fails the call (a ghost file still answers 404),
but only after the objects that did copy have their rows, so nothing is
left in the bucket unreferenced. Copied entries publish per depth in one
dispatch.

* refactor(share): build masked share paths in one place

sharePathMask exports maskedRoot(owner, uuid, name) and
maskUnder(root, realPath). ShareService's maskedPathVia goes, its
maskedSelfPath and shareDeepLink's maskedSharePath build on them, and the
masker, maskUnderAnchor and learnShareRoots use maskedRoot. Output is
byte-for-byte the same; tests pin it.

* fix(share): send old_path on a recipient's item.moved

The desktop's item.moved handler reads old_path; ShareService sent the
former masked path only as from_path. Both are sent now.

* perf(share): skip the audience lookup for owners with nothing shared

Every fs write, create, rename, move and delete looked for share
recipients: an ancestor walk plus two share queries, for an owner who in
nearly every case has shared nothing. #sharesReaching now reads the
chain through FSEntryStore.getAncestors (no third copy of the walk) and
asks a per-owner "has anything shared" flag before the share queries.

The flag is the per-user cache events already keeps for subscriptions
(SubscriptionCache): one ShareStore.ownerHasShares read per owner per
TTL, coalesced across a burst. Creating a share (user, team, claimed
invite) or moving a subtree to a new owner bumps it locally and over
outer.pubsub.share.ownerShared; the TTL covers a process that misses
the bump. A failed lookup reads as shared, so the full lookup decides.

* perf(share): batch the per-row reads behind share listings

Share listings looked things up one row at a time:

- teams by id: TeamStore.getByIdsIncludingDeleted (the single-id read
  calls it) for listSharedByMe, listSharesOf and #revokeGroupSharesBy
- team shares per node and ancestor: ShareStore.listGroupOnFsentries,
  one query for the chain, in the same node-then-ancestor order
- #liveGroupGrants: PermissionStore.queryIssuerGroupPermsByPrefixes
  reads every issuer/group pair under every prefix in one query
- #revokeGroupSharesBy: the five canManagePermission checks per row run
  together instead of one after another
- ShareNotificationService #unblocked: users via getByIds and blocks via
  UserBlockStore.blockersAmong, two queries instead of two per member
- digest flush: entries are taken at bounded concurrency rather than one
  at a time

* perf(events): ask background consent once per holder and app on a revoke settle

Withdrawing events:background re-checked consent row by row, resolving the holder's actor and asking the permission service for every one of their background rows. Rows of one holder and app stand on one consent, so it is asked once and shared.

* refactor(events): drop the registry's unused push fields

notify, defaultDelivery, PushMessage, NotifyProjection and pushProjection were read only by registry.test. Every subject was unpushable and broadcast by default; the subscription's delivery class stays in DeliveryClass, which the stores use.

* refactor(share): retire trashed shares through onEntryOwnerChanged

onEntryTrashed was a copy of onEntryOwnerChanged: the same subtree share sweep, grant retire and row delete.

* fix(fs): page subtree walks by depth, not path

MySQL sorts a PAD SPACE string on its first max_sort_length (1024) bytes,
so under utf8mb4_unicode_ci paths past about 512 characters tie and fall
back to id. A file moved under a newer directory then sorted after it: the
delete walk reached the directory first and the parent_id cascade took the
file without its object delete or event, and the keyset skipped or
repeated rows. Pages now order by segment count, then id, which no
collation can reorder.

* fix(share): cache an owner as shared when the bump arrives

A bump only dropped the cached answer, so the next lookup could read a
replica that hadn't applied the new share yet and cache "nothing shared"
for another TTL. The bump now records "shared" outright.

* fix(fs): probe a directory for children by parent_id, from the primary

* fix(fs): keep the copied-size check in the batched directory copy

A copied file records the size CopyObject actually duplicated; growth past
the source row is charged against the allowance, and a copy that no longer
fits is deleted and refused, as a single-file copy already does.
2026-10-11 21:54:13 -07:00
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