Ismael Juma created KAFKA-2858:
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Summary: Clarify usage of `Principal` at the authentication layer
Key: KAFKA-2858
URL: https://issues.apache.org/jira/browse/KAFKA-2858
Project: Kafka
Issue Type: Improvement
Components: security
Reporter: Ismael Juma
Assignee: Ismael Juma
Priority: Minor
We currently use `KafkaPrincipal` at the authentication and authorization
layer. But there is an implicit assumption that we always use a
`KafkaPrincipal` with principalType == USER_TYPE as we ignore the the
principalType of the `KafkaPrincipal` when we create `RequestChannel.Session`.
I think it would be clearer if we used a separate `Principal` implementation in
the authentication layer.
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