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Expose the platform base key via SDK#getBaseKey().

Includes a unit test and a README snippet, plus a Byte Buddy version pin so Mockito inline mocking works on Java 21.

@strantalis strantalis requested review from a team as code owners January 12, 2026 19:43
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Summary of Changes

Hello @strantalis, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new feature to the SDK, allowing developers to programmatically access the platform's base key, which is crucial for certain security configurations. This enhancement is accompanied by a necessary dependency update to ensure testing compatibility with the latest Java versions, thereby improving the SDK's robustness and developer experience.

Highlights

  • New SDK Method: A new public method, SDK#getBaseKey(), has been added to expose the platform's base key, if configured in the well-known configuration.
  • Unit Test Coverage: A dedicated unit test (SDKTest.java) has been included to verify the correct functionality and retrieval of the base key via the new method.
  • Documentation Update: The README.md file has been updated with a code snippet demonstrating how to fetch and utilize the exposed base key, improving developer guidance.
  • Java 21 Compatibility: The Byte Buddy dependency version has been explicitly pinned in pom.xml to ensure Mockito's inline mocking capabilities work correctly when running tests on Java 21.

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Code Review

This pull request effectively exposes the platform base key via SDK#getBaseKey(), which is a valuable addition. The implementation is straightforward, and the supporting changes, such as the README update, the new unit test for the happy path, and the Byte Buddy version pin for Java 21 compatibility, are all well-executed. My primary feedback is to enhance the test coverage for the new getBaseKey method to ensure its robustness by including tests for edge cases like missing or malformed data.

Comment on lines +40 to +64
void testGettingBaseKey() {
var platformServicesClient = mock(ProtocolClient.class);
var wellknownService = Mockito.mock(WellKnownServiceClientInterface.class);
var baseKeyJson = "{\"kas_url\":\"https://example.com/base_key\",\"public_key\":{\"algorithm\":\"ALGORITHM_RSA_2048\",\"kid\":\"thekid\",\"pem\": \"thepem\"}}";
var val = Value.newBuilder().setStringValue(baseKeyJson).build();
var config = Struct.newBuilder().putFields("base_key", val).build();
var response = GetWellKnownConfigurationResponse
.newBuilder()
.setConfiguration(config)
.build();

Mockito.when(wellknownService.getWellKnownConfigurationBlocking(Mockito.any(), Mockito.anyMap()))
.thenReturn(TestUtil.successfulUnaryCall(response));

var services = new FakeServicesBuilder().setWellknownService(wellknownService).build();
var sdk = new SDK(services, null, null, platformServicesClient, null);

var baseKey = sdk.getBaseKey();
assertThat(baseKey).isPresent();
var simpleKasKey = baseKey.get();
assertThat(simpleKasKey.getKasUri()).isEqualTo("https://example.com/base_key");
assertThat(simpleKasKey.getPublicKey().getAlgorithm()).isEqualTo(Algorithm.ALGORITHM_RSA_2048);
assertThat(simpleKasKey.getPublicKey().getKid()).isEqualTo("thekid");
assertThat(simpleKasKey.getPublicKey().getPem()).isEqualTo("thepem");
}
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medium

The test testGettingBaseKey covers the happy path well. To ensure the robustness of the newly exposed getBaseKey() method, I recommend adding tests for the following edge cases, which are handled within Planner.fetchBaseKey:

  • No base_key: When the well-known configuration does not contain a base_key. The method should return Optional.empty().
  • Malformed base_key JSON: When the base_key value is not valid JSON. The method should throw an SDKException.
  • Incomplete base_key data: When the base_key JSON is valid but missing required fields (e.g., kas_url, public_key). The method should return Optional.empty().

Adding these tests would provide more confidence in the new API's behavior under various conditions.

@sonarqubecloud
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Pin Byte Buddy for test-time Mockito instrumentation on newer JVMs (e.g. Java 21).
This does NOT add a runtime dependency; it only manages the version used by modules.
-->
<dependency>
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@cshamrick do you have thoughts on this. Needed it to get running locally for some reason.

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2 participants