feat(sdk): resolve attribute key splits via GetKeyMappingsByFqns during encrypt - #392
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…ng encrypt Switch Autoconfigure.newGranterFromService from the deprecated GetAttributeValuesByFqns to GetKeyMappingsByFqns, the client-side key-split read API. Per requested FQN with mapped keys, a minimal attribute (FQN prefix + rule) feeds the existing granter pipeline; FQNs with no mapped keys (legacy KAS grants) are resolved via a single GetAttributeValuesByFqns fallback, and platforms returning Unimplemented fall back for all FQNs. The attribute-values population is factored into addGrantsFromAttributeValues for reuse. Tests: existing AutoconfigureTest cases exercise the Unimplemented fallback via a failed-call stub; new cases cover the mapped-key path (no fallback call) and the empty-mapping legacy fallback. Adds TestUtil.failedUnaryCall. Signed-off-by: Krish Suchak <suchak.krish@gmail.com>
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe SDK now resolves service-based grants through effective KAS key mappings. It creates minimal attributes for mapped values, uses full attribute lookup for unmapped values, and falls back when servers return ChangesKey mapping granter resolution
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to The encrypt path now resolves mapped keys with a scoped legacy fallback, with no actionable merge-blocking risk remaining after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant Autoconfigure
participant KeyMappingsRPC
participant AttributeValuesRPC
participant Granter
Autoconfigure->>KeyMappingsRPC: Request effective KAS key mappings
KeyMappingsRPC-->>Autoconfigure: Return mapped keys
Autoconfigure->>AttributeValuesRPC: Resolve unmapped values
AttributeValuesRPC-->>Autoconfigure: Return attribute values
Autoconfigure->>Granter: Add resolved grants
Suggested reviewers: Poem
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✅ Passed checks (4 passed)
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alkalescent
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August 24, 2026 19:44
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Inline comments:
In `@sdk/src/main/java/io/opentdf/platform/sdk/Autoconfigure.java`:
- Around line 920-923: Update the grant-resolution flow around
Granter.hasMappedKeys, getSplits, and assignKeysTo so policies containing both
mapped-key attributes and legacy-grant-only FQNs preserve and enforce all
grants; avoid planning solely from mapped attributes when any requested FQN
lacks mappedKeys, or otherwise include its legacy URL-only grants in the same
plan. Add a regression test covering a mixed mapped and legacy ALL_OF policy.
In `@sdk/src/test/java/io/opentdf/platform/sdk/AutoconfigureTest.java`:
- Line 4: Remove the unused ConnectException import from AutoconfigureTest;
leave the rest of the test class unchanged.
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sdk/src/main/java/io/opentdf/platform/sdk/Autoconfigure.javasdk/src/test/java/io/opentdf/platform/sdk/AutoconfigureTest.javasdk/src/test/java/io/opentdf/platform/sdk/TestUtil.java
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assignKeysTo now falls back to a value's URL-only legacy grants when it has no mapped-key entry, so a policy mixing mapped-key and legacy-grant-only values keeps every KAS in the split plan instead of dropping the legacy one. Also removes an unused ConnectException import from the test. Addresses CodeRabbit review on PR #392. Signed-off-by: Krish Suchak <suchak.krish@gmail.com>
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elizabethhealy
previously approved these changes
Aug 26, 2026
- assignKeysTo falls back to a value's URL-only legacy grants when it has no mapped-key entry, so a policy mixing mapped-key and legacy-grant-only values keeps every KAS in the split plan instead of dropping the legacy one. - newGranterFromService wraps a non-Unimplemented ConnectException in AutoConfigureException (an SDKException subclass and this method's declared exception), matching the rest of the file. - Remove an unused ConnectException import from the test. Adds regression tests for the mixed mapped/legacy plan and the wrapped error. Addresses CodeRabbit and reviewer feedback on PR #392. Signed-off-by: Krish Suchak <suchak.krish@gmail.com>
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What / Why
The policy RPC
GetAttributeValuesByFqnsis deprecated in favor of narrower read APIs. For the client-side encrypt (autoconfigure / key-split) path the replacement isGetKeyMappingsByFqns, which returns the server-resolved effective KAS keys and attribute rule per value FQN (value > definition > namespace). This migrates the Java SDK encrypt path onto it, matching the platform Go SDK which already resolves splits this way.Changes
Autoconfigure.newGranterFromServicenow callsgetKeyMappingsByFqnsBlockingfirst. For each requested FQN with mapped keys, a minimalAttribute(FQN prefix + rule, the only fields read byconstructAttributeBoolean) feeds the existingaddAllGrants/getSplitspipeline, sohasMappedKeys -> planFromAttributesis unchanged.getAttributeValuesByFqnsfallback; platforms returningUnimplementedfall back for all FQNs.getGranterintoaddGrantsFromAttributeValuesso both the offline path and the fallback reuse it.No proto-version bump is required:
platform.branch(protocol/go/v0.39.0) already definesGetKeyMappingsByFqns, so the generated stub appears on regeneration.Fallback Order
Mapped keys from
GetKeyMappingsByFqns, then legacy grants viaGetAttributeValuesByFqnsfor empty-key FQNs, then the existing base-key / default-KAS behavior. An empty key set never bypasses the grant fallback.How to Test
mvn -pl sdk test -Dtest=AutoconfigureTest, and the fullsdkmodule suite. Verified locally (JDK 17):AutoconfigureTest21/21, fullsdkmodule 212/212.Unimplementedfallback via a failed-call stub (TestUtil.failedUnaryCall).getAttributeValuesByFqnsis never called) and empty-mapping legacy fallback.Risk
Touches the encrypt key-split path. No change to produced TDFs for existing policy configurations: mapped-key values resolve to the same KAS keys server-side, and legacy-grant values take the unchanged
GetAttributeValuesByFqnspath.Summary by CodeRabbit
New Features
Bug Fixes