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6
Commits
| Author | SHA1 | Message | Date | |
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 Chris Lu
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8d2b417c69 |
iceberg, lance: vend read-only credentials to callers that may only read (#11859)
* s3tables: share the UpdateTable authorization gate Extract the validation, load, and permission check from handleUpdateTable into authorizeUpdateTable so the table an update was authorized against is the same snapshot the mutation writes to. Manager gains AuthorizeUpdateTable, mirroring AuthorizeCreateTable, so callers can ask the question without updating anything. * s3tables: share the UpdateView authorization gate Extract the lookup, policy load, and permission check from handleUpdateView into authorizeUpdateView, mirroring authorizeUpdateTable, and expose it as Manager.AuthorizeUpdateView for callers that need the answer without the update. * s3api: scope vended table credentials to read-only on request VendTableCredentials takes a readOnly flag and tablePrefixSessionPolicy emits only s3:GetObject for the table prefix when it is set, keeping the conditioned ListBucket and unconditioned GetBucketLocation statements that reads still need. * iceberg: vend read-only credentials when the caller may not write LoadTable and friends vend storage credentials only for the authority the caller holds: the vend now checks UpdateTable/UpdateView permission and a caller that may only read the catalog entry gets a read-only session. Paths that just passed a write gate (stage-create, view commit) keep the full session. * lance: vend read-only credentials when the caller may not write storage_options vends the same read-only session as the Iceberg catalog when the caller lacks UpdateTable on the table. * lance: keep write credentials for callers authorized to declare A Lance commit is a direct S3 write that never revisits the catalog, so a caller that just passed CreateTable still gets a writable session; the UpdateTable gate applies to describe, the read path. * iceberg, lance: log a failed write check instead of only reading it as denied |
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Chris Lu
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7522e17b6d |
iceberg: vend table-scoped credentials to clients that ask for delegation (#10777)
* iceberg: vend table-scoped credentials to clients that ask for delegation The catalog recognised X-Iceberg-Access-Delegation: vended-credentials and then deliberately said nothing, because it had nothing to vend: it withheld even the S3 endpoint so the client would keep the credentials it was configured with. That left every engine expecting the catalog to hand out access - Snowflake, Databricks, Trino with vending, any multi-tenant setup - needing static S3 keys distributed out of band. Mint an STS session per request instead, scoped by a session policy to the table's own prefix plus the bucket listing needed to resolve it, and return it in the load response config and storage-credentials. The role to assume is named by -s3.iceberg.credentialRole; its trust policy is what decides whether a caller may assume it, and vending stays off until it is set. A failed mint falls back to the old silence rather than handing back an endpoint the client cannot sign for. * iceberg: keep vended credentials inside the table prefix Review follow-ups on credential vending: Listing was granted on the bucket ARN with no condition, so a credential vended for one table could enumerate every other table's object names. Constrain s3:prefix to the table's own prefix, which the S3 gateway already populates for list requests. A table location carrying * or ? would have gone into the policy's resource pattern unescaped and widened the session to sibling prefixes. Refuse to vend for such a location rather than escaping it; nothing the catalog generates contains those characters. DurationSeconds skipped the 900..43200 bounds the other assume-role paths enforce, so -s3.iceberg.credentialDurationSeconds could ask for a session outside them. The check is now shared by all three entry points. * iceberg: return the vended credentials from buildFileIOConfig itself buildStorageConfig was a second name for what buildFileIOConfig already did; it now returns the storage credentials alongside the properties, and callers that only want the properties drop them. * iceberg: split the vended bucket grants, and refuse a whole-bucket scope The prefix condition sat on a statement that also granted GetBucketLocation and ListBucketMultipartUploads, neither of which carries an s3:prefix to satisfy it, so both were denied for every vended credential. GetBucketLocation moves to its own unconditioned statement. ListBucketMultipartUploads is dropped: Iceberg writers complete and abort by upload id, and granting it either leaks in-flight keys bucket-wide or breaks on the same missing prefix. A table whose location has no prefix - one registered at the bucket root - would have been vended read and write over every other table in the bucket. Refuse, the way a location with wildcards is refused. |
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Chris Lu
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ec37ef5aaa |
iceberg: add view rename, scan-report and snapshots=refs to the catalog (#10776)
* iceberg: add view rename, scan-report and snapshots=refs to the catalog Three gaps against the REST spec that clients hit in normal use: Views had no rename, though tables did and views are stored the same way, so the move is the same catalog-only pointer move. Tables and views share a namespace directory, so both renames now refuse the other kind instead of moving it. Engines POST a scan or commit report after planning; a 404 there turns into an error line per query. Accept the report and discard it - the catalog keeps no metrics store. LoadTable ignored ?snapshots=refs and always returned the whole snapshot history, which is what clients use the parameter to avoid on long-lived tables. * iceberg: authorize view rename against the view ARN, tighten the metrics endpoint Review follow-ups: The shared rename checked the source against a table ARN whatever the kind, so a policy scoped to a view's own ARN never matched and one written for a table ARN was evaluated for a view. The entry kind now carries the ARN builder. The metrics endpoint truncated a report at 1 MiB and then failed to parse it, answering 400 for a query that had actually succeeded. Read one byte past the limit to tell "fits" from "cut short", and discard an oversized report instead of rejecting it. Empty bodies and reports without a report-type are now rejected, which the REST schema requires. ?snapshots= is defined for LoadTable, so it no longer filters what CreateTable echoes back. |
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Chris Lu
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d044839ab2 |
iceberg: make a table commit a compare-and-swap (#10775)
* iceberg: make a table commit a compare-and-swap
The catalog validated the caller's version token, ran its authorization
checks, and only then wrote the new metadata xattr. Two engines
committing against the same base both passed that check and both wrote,
so the second silently dropped the first one's snapshot. Both also derive
the same v{N}.metadata.json name and the file write overwrote, leaving
the surviving pointer aimed at the loser's metadata - and the loser's
conflict cleanup then deleted the winner's file.
Write the metadata file with an exclusive create and update the xattr
conditionally on the bytes the handler read, the way the maintenance
worker already commits. A writer that lost the race re-reads and retries,
and reports 409 CommitFailedException once out of attempts.
* iceberg: stage a commit under a unique name when the versioned one is taken
Two follow-ups from review of the commit compare-and-swap:
Refusing to overwrite v{N}.metadata.json also refused to get past a file
left behind by a commit that died between staging and updating the
pointer. Every later commit derived the same name, saw the collision, and
reported a conflict, so the table stayed uncommittable until an orphan
sweep removed the file. Stage under v{N}-{uuid} instead: neither writer's
file is overwritten and the catalog pointer still decides who won, which
is how the maintenance worker has always staged its own metadata.
metadataVersionFromLocation learned to read the version back out of that
name.
The conditional update guarded only the metadata attribute while the
write replaced the whole entry, so a policy or tag written in the same
window was silently reverted. Guard every catalog attribute, which turns
that into a conflict the caller retries on fresh state.
* iceberg: give saveMetadataFile the exclusive flag instead of a second name
saveNewMetadataFile, saveMetadataBlobExclusive and uniqueMetadataFileName
were three new names around one existing helper. The flag now rides on
saveMetadataFile and saveMetadataBlob, and the unique-name construction
sits where it is used.
* iceberg: reuse the filer CAS helpers #10773 added, and stage transactions exclusively
#10773 landed mutateEntryExtended, which already writes an entry back under a
whole-entry precondition and retries. Drop the helper this branch added and
route the table commit through it: the check that the metadata is still the
one this request read now lives in the mutation, where it sees current state.
The policy the request was authorized against is asserted too, so an
administrator restricting it mid-commit sends the caller back through
authorization instead of having a stale decision applied. Bucket and
namespace policies live on other entries and a single-entry precondition
cannot cover them.
Multi-table transactions stage their metadata exclusively for the same
reason single-table commits do, and carry the name they landed on into the
pointer flip.
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Chris Lu
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d448e9db7b |
iceberg: withhold the S3 endpoint from credential-vending clients (#10570)
* iceberg: withhold the S3 endpoint from credential-vending clients A client that sends X-Iceberg-Access-Delegation: vended-credentials builds its storage credential out of the LoadTable config and drops the one it was configured with. We vend no credentials, so the endpoint we advertised left DuckDB signing nothing: every metadata and data file came back 403, and its attempt to refresh the empty credential 404ed on stage-created tables. Answer those clients with no config at all so they keep their own credentials. Clients that do not ask for delegation still get the endpoint. * iceberg: mark load responses as varying on the delegation header The FileIO config in a table or view load response now depends on whether the client asked for vended credentials, so a cache between us and the client must key on that header rather than on the URL alone. * test: cover the DuckDB vended-credentials access pattern Runs weed mini with -s3.externalUrl, which is what makes the catalog advertise an endpoint at all, and checks both halves: a plain LoadTable still gets the endpoint, while one asking for vended credentials never gets an endpoint without the credentials to sign with. The DuckDB round trip creates a table from a query and reads it back, which is the flow that failed with 403 on every data file. |
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Chris Lu
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0403e47ef6 |
iceberg: support views (#10069)
* s3tables: tag table entries and exclude views from table listings * s3tables: add view CRUD operations * iceberg: support view create, load, exists, drop, and list * iceberg: support view update * iceberg: test view error classification and metadata round-trip * iceberg: pre-check existence and write view metadata only after create * iceberg: map view namespace-not-found to 404 * iceberg: test view create namespace-404 and duplicate no-clobber * s3tables: tag view metadata and entry type atomically CreateView wrote ExtendedKeyMetadata and ExtendedKeyEntryType in two UpdateEntry calls, so a partial failure could leave a view directory untagged. Add setExtendedAttributes to set both in one UpdateEntry. * iceberg: roll back view registration when metadata write fails The metadata file is written after the catalog registers the view. If that write fails, drop the just-created view so it doesn't linger pointing at a missing metadata.json. Reuse the DeleteView path via a shared dropView helper. |