Jeff Klukas created KAFKA-4932:
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Summary: Add UUID Serdes
Key: KAFKA-4932
URL: https://issues.apache.org/jira/browse/KAFKA-4932
Project: Kafka
Issue Type: Improvement
Components: clients, streams
Reporter: Jeff Klukas
Priority: Minor
I propose adding serializers and deserializers for the java.util.UUID class.
I have many use cases where I want to set the key of a Kafka message to be a
UUID. Currently, I need turn UUIDs into strings or byte arrays and use the
associated Serdes, but it would be more convenient to serialize and deserialize
UUIDs directly.
I'd propose that the serializer and deserializer use the 36-byte string
representation, calling UUID.toString and UUID.fromString
Optionally, we could also has the deserializer support a 16-byte representation
and it would check size of the input byte array to determine whether it's a
binary or string representation of the UUID. It's not well defined whether the
most significant bits or least significant go first, so this deserializer would
have to support only one or the other.
Optionally, there could be two variants of the serializer, a
UUIDStringSerializer and a UUIDBytesSerializer.
We would also wrap these in a Serde and modify the Serdes class to include this
in the list of supported types.
I would be willing to write this PR, but am looking for feedback about whether
there are significant concerns here around ambiguity of what the byte
representation of a UUID should be, or if there's desire to keep to list of
built-in Serdes minimal such that a PR would be unlikely to be accepted.
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