wilmerdooley opened a new pull request, #22599:
URL: https://github.com/apache/kafka/pull/22599
The native Kafka image fails to start when
`KAFKA_SASL_ENABLED_MECHANISMS=OAUTHBEARER` is configured because GraalVM
native-image reachability metadata does not retain the no-argument constructors
used by the reflective instantiation in `LoginManager` and the SASL provider
factories. This avoids the failure by instantiating the known login, callback
handler, and SASL factory classes directly rather than via `Utils.newInstance`
/ `Provider.put`, ensuring they are reachable in the native image.
Changes:
- `LoginManager`: introduce `createLogin` and `createLoginCallbackHandler`
helpers that directly instantiate `DefaultLogin`, `KerberosLogin`,
`OAuthBearerRefreshingLogin`, `AbstractLogin.DefaultLoginCallbackHandler`, and
`OAuthBearerUnsecuredLoginCallbackHandler`, falling back to `Utils.newInstance`
for any other class.
- `OAuthBearerSaslClientProvider` and `OAuthBearerSaslServerProvider`:
register their services via `putService` with an overridden `newInstance` that
constructs the factory directly, instead of registering the class name and
relying on `Provider` to instantiate it reflectively.
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JIRA: https://issues.apache.org/jira/browse/KAFKA-19583
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