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Chris LuandGitHub
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* feat(s3/lifecycle): sole-survivor delete-marker routing (Phase 5b/2)
Production stores delete markers under <object>.versions/<version-file>;
buildObjectInfo skips every version-folder event because it can't tell
current from noncurrent without sibling state. EXP_DM is the one rule
that can be routed from the file path alone: if the marker is the only
entry under .versions/<key>/ then it's necessarily the latest.
Add SiblingLister; gate the listing on (versioned, version-folder path,
delete-marker entry, EXP_DM rule active for the bucket, lister supplied)
so non-marker version writes pay nothing. The Match carries the LOGICAL
key in ObjectKey and the marker's version_id in VersionID so the
dispatcher can reach deleteSpecificObjectVersion(bucket, logical, vid);
without a version_id the dispatcher would BLOCK and freeze the cursor.
Server-side dispatch re-checks sole-survivor before deleting: another
PUT can land between schedule and dispatch, and identity-CAS only covers
the marker entry, not the directory shape. Lists .versions/<key>/ with
limit 2 and returns NOOP_RESOLVED if count != 1 or the surviving entry
is not the same version.
Fix isDeleteMarkerEntry to compare string(v) == "true" — production
writes []byte("true"), not {1}; every other reader of ExtDeleteMarkerKey
in this repo uses the string predicate.
filerSiblingLister.Count caps at limit 2 — callers only distinguish
"sole survivor" (1) from "more than one" (>=2).
Follows #9373.
* fix(s3/lifecycle): gate sibling listing on active event-driven EXP_DM
hasActionKind tested key presence only; an EXP_DM rule whose action was
inactive (BootstrapComplete=false) or scan-only would still trigger the
sibling-listing RPC even though no match could fire. Replace with a
helper that mirrors the per-key filter Route already applies before
emitting matches: kind matches, snap.Action returns non-nil, IsActive,
and Mode == ModeEventDriven.
Add a regression test that builds a versioned snapshot with the rule
but no PriorStates (action stays inactive) and asserts the lister is
never consulted.
* chore(s3/lifecycle): trim verbose comments
* fix(s3/lifecycle): null version, hard-delete trigger, latest pointer
Three correctness gaps in EXP_DM routing.
1. Null version. SiblingLister.Count saw only .versions/<key>/, but a
pre-versioning bare-key object survives outside that folder when
versioning is enabled later. Marker + null would look like count==1
and EXP_DM would re-expose the old object. Replace Count with
Survivors which also reports HasNullVersion; route- and dispatch-time
suppress when set.
2. Hard-delete trigger. The router skipped events with NewEntry==nil so
a noncurrent hard-delete that left the marker as sole survivor never
fired EXP_DM. Allow version-folder hard-deletes through; the lister's
LoneEntry carries the surviving marker's version_id and identity.
3. Latest pointer. checkSoleSurvivorMarker only checked count and
filename. The worker can race createDeleteMarker between the file
write and the .versions/ directory metadata update. Require
ExtLatestVersionIdKey == versionId; missing pointer returns
retry-later instead of deleting.
Adds a null-version exists check on the dispatch path too.
* fix(s3/lifecycle): normalize null-version lookup errors and detect dir markers
Two correctness bugs in the null-version check.
Route-side: filerSiblingLister called client.LookupDirectoryEntry
directly. SeaweedList wraps not-found via filer_pb.LookupEntry, which
normalizes the gRPC string-mapped not-found into ErrNotFound. The raw
client returns it as a generic error instead, so every absent
null-version (the common case) bubbled up as an error and the router
suppressed every otherwise-valid match. Use filer_pb.LookupEntry.
Both sides: explicit S3 directory-key markers (object names ending in /)
are stored as directory entries with Attributes.Mime set;
processExplicitDirectory in the listing path treats them as null
versions. The previous check was !IsDirectory only, which let the
marker delete proceed and re-expose the directory key. Add
IsDirectoryKeyObject() to both predicates. Also use
util.NewFullPath(...).DirAndName() for the parent/name split so a
trailing-slash key resolves to the same underlying entry path as the
listing code.
* fix(s3/lifecycle): EXP_DM ctx propagation, nil-entry guard, fast-path skip
Three small follow-ups on the EXP_DM dispatch path.
checkSoleSurvivorMarker now takes ctx instead of context.Background()
so worker shutdown / deadlines cancel the SeaweedList RPC instead of
stalling.
If SeaweedList fires the lone callback with entry==nil, firstName
stays empty and the marker-replaced check would short-circuit; that's
the one shape that bypasses the dispatch guard, so retry-later instead.
routeSoleSurvivorMarker now skips the Survivors RPC on regular
non-marker version creates — those always have Count >= 2, so the
listing was wasted load on every versioned write under an EXP_DM rule.
Hard-delete events (NewEntry==nil) and marker creates still flow
through. Added a regression test asserting the regular-create case
doesn't consult the lister.
Documented that logicalKeyFromVersionPath rejects bucket-root markers
intentionally.
see https://blog.aqwari.net/xml-schema-go/ 1. go get aqwari.net/xml/cmd/xsdgen 2. Add EncodingType element for ListBucketResult in AmazonS3.xsd 3. xsdgen -o s3api_xsd_generated.go -pkg s3api AmazonS3.xsd 4. Remove empty Grantee struct in s3api_xsd_generated.go 5. Remove xmlns: sed s'/http:\/\/s3.amazonaws.com\/doc\/2006-03-01\/\ //' s3api_xsd_generated.go