[KAFKA-3336] Unify ser/de pair classes into one serde class

• Type: Sub-task
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.10.0.0
• Assignee: Guozhang Wang
• Reporter: Guozhang Wang
• Reviewer: Gwen Shapira
• Created: 05/Mar/16 02:08
• Updated: 17/Mar/16 22:42
• Resolved: 17/Mar/16 22:42

Description

Right now users must provide two separate classes for serializers and deserializers, respectively. This means the current API functions have at least 2 * numberOfTypes parameters.

Example (current, bad): "foo(..., longSerializer, longDeserializer)".

Because the serde aspect of the API is already one of the biggest UX issues, we should unify the serde functionality into a single serde class, i.e. one class that provides both serialization and deserialization functionality. This will reduce the number of required serde parameters in the API by 50%.

Example (suggested, better): "foo(..., longSerializerDeserializer)".

• Note: This parameter name is horrible and only used to highlight the difference to the "current" example above.

We also want to 1) add a pairing function for each operator that does not require serialization and 2) add a default serde in the configs to make these not required configs.