Feature Request: Kerberos support for Schema Registry

[dusts66]

Description

Looking for kerberos authentication support for Schema Registry. For example, using the AvroProducer method the schema registry class doesn't support a schema registry instance with kerberos auth. Kafka has this feature through librdkafka.

How to reproduce

Using AvroProducer method with a Schema Registry URL. If schema registry has kerberos auth enabled the client can't connect and revceives a 401.

Checklist

Please provide the following information:

• [ ] confluent-kafka-python and librdkafka version (confluent_kafka.version() and confluent_kafka.libversion()):
• [x] Apache Kafka broker version: 2.4.1
• [ ] Client configuration: {...}
• [x] Operating system: RHEL 7.7
• [ ] Provide client logs (with 'debug': '..' as necessary)
• [ ] Provide broker log excerpts
• [ ] Critical issue

[jliunyu]

Hi @dusts66, thanks for asking. But we don't have immediate plans to support this.

[RajShah-1]

Providing this support should be easy to add by providing a way to give custom auth object in the constructor, which would be set to schema_registry._rest_client.session.auth.