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Status

Current state:  "Under Discussion"

Discussion thread: here 

JIRA: here 

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

Motivation

From JIRA description

"Currently the `kafka-acls` command has a `--list` option that can list per resource. In order to look at the ACLs  for a particular principal the user needs to iterate through the entire list to figure out what privileges a particular principal has been granted. An option to list the ACL per principal would simplify this process."

We propose new optional argument "–principal" to list the ACLs for the specified principal.

Public Interfaces

kafka-acls.sh script with "--list" option supports optional argument "--principal" with the following specification

    val listPrincipalsOpt = parser.accepts("principal", "List ACLs for the specified principal. principal is in principalType:name format." +
      " Note that principalType must be supported by the Authorizer being used.")
      .withOptionalArg()
      .describedAs("principal")
      .ofType(classOf[String])

Example:

>> sh kafka-acls.sh --authorizer-properties zookeeper.connect=localhost:2181 --list --principal User:User1
ACLs for principal `User:User1`
Current ACLs for resource `Group:PREFIXED:TEST_GROUP`:
 	User:User1 has Allow permission for operations: Read from hosts: *

Current ACLs for resource `Topic:PREFIXED:TEST_TOPIC`:
 	User:User1 has Allow permission for operations: Read from hosts: *
	User:User1 has Allow permission for operations: Create from hosts: *
	User:User1 has Allow permission for operations: Write from hosts: *
	User:User1 has Allow permission for operations: Describe from hosts: *

Compatibility, Deprecation, and Migration Plan

• There won't be any change of current behavior.