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Status

Current state: [One of "Under Discussion", "Accepted", "Rejected"]

Discussion thread: here [Change the link from the KIP proposal email archive to your own email thread]

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Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

Motivation

Describe the problems you are trying to solveThe KIP-48  added support for delegations token based authentication mechanism.  This already implemented protocol request and response  for Delegation token operations. This KIP is about adding these delegation token operations to the new Admin Client API.

Public Interfaces

Briefly list any new interfaces that will be introduced as part of this proposal or any existing interfaces that will be removed or changed. The purpose of this section is to concisely call out the public contract that will come along with this feature.

A public interface is any change to the following:

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Binary log format

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The network protocol and api behavior

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Any class in the public packages under clientsConfiguration, especially client configuration

• org/apache/kafka/common/serialization

• org/apache/kafka/common

• org/apache/kafka/common/errors

• org/apache/kafka/clients/producer

• org/apache/kafka/clients/consumer (eventually, once stable)

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Monitoring

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Command line tools and arguments

The AdminClient API will have the following new methods added 

AdminClient {
public CreateDelegationTokenResult createDelegationToken() 
public abstract CreateDelegationTokenResult createDelegationToken(CreateDelegationTokenOptions options)
public RenewDelegationTokenResult renewDelegationToken(ByteBuffer hmac)
public abstract RenewDelegationTokenResult renewDelegationToken(ByteBuffer hmac, RenewDelegationTokenOptions options);
public ExpireDelegationTokenResult expireDelegationToken(ByteBuffer hmac)
public abstract ExpireDelegationTokenResult expireDelegationToken(ByteBuffer hmac, ExpireDelegationTokenOptions options);
public DescribeDelegationTokenResult describeDelegationToken()
public abstract DescribeDelegationTokenResult describeDelegationToken(DescribeDelegationTokenOptions options);
}

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Proposed Changes
Describe the new thing you want to do in appropriate detail. This may be fairly extensive and have large subsections of its own. Or it may be a few sentences. Use judgement based on the scope of the change.
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