Thanks Gwen. @Parth, @Harsha pinging you guys for your feedback. Based on discussion on JIRA, we have following open questions.
1. How to allow an authorizer implementation to specify supported principal types? An alternative of providing supported Principal types via interface is via a config option. Having a config option will be helpful for certain third party implementations that uses SimpleAclAuthorizer but support more PrincipalTypes. However, it requires adds one more config. 2. ACLs validation should be done by client or by authorizer? Once this method is added we expect the Client of the authorizer to do the validation on principal types and the authorizer will still not do any validation by it self. As an alternative we can add the validation at Authorizer level. Having validation done at client side enables clients to fail fast for invalid principal types, whereas implementing it at authorization level removes the requirement of having the validation done on each client implementation. On Mon, Mar 7, 2016 at 3:47 PM, Gwen Shapira <g...@confluent.io> wrote: Ashish, > > I'm neutral on this (+0), but would be good to have feedback from > Harsha and Parth. If you can get their "sounds good", we can probably > get it through fairly soon and in time for 0.10.0. > > Gwen > > On Wed, Mar 2, 2016 at 9:47 AM, Ashish Singh <asi...@cloudera.com> wrote: > > Here is link to the KIP, > > > https://cwiki.apache.org/confluence/display/KAFKA/KIP-50+-+Enhance+Authorizer+interface+to+be+aware+of+supported+Principal+Types > > > > On Wed, Mar 2, 2016 at 9:46 AM, Ashish Singh <asi...@cloudera.com> > wrote: > > > >> Hi Guys, > >> > >> I would like to initiate a discuss thread on KIP-50. Kafka authorizer is > >> agnostic of principal types it supports, so are the acls CRUD methods > >> in kafka.security.auth.Authorizer. The intent behind is to keep Kafka > >> authorization pluggable, which is really great. However, this leads to > Acls > >> CRUD methods not performing any check on validity of acls, as they are > not > >> aware of what principal types Authorizer implementation supports. This > >> opens up space for lots of user errors, KAFKA-3097 > >> <https://issues.apache.org/jira/browse/KAFKA-3097> for an instance. > >> > >> This KIP proposes adding a getSupportedPrincipalTypes method to > authorizer > >> and use that for acls verification during acls CRUD. > >> > >> Feedbacks and comments are welcome. > >> > >> -- > >> > >> Regards, > >> Ashish > >> > > > > > > > > -- > > > > Regards, > > Ashish > -- Regards, Ashish
