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Matthias J. Sax updated KAFKA-4932: ----------------------------------- Labels: needs-kip newbie (was: newbie) > Add UUID Serde > -------------- > > 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 > Labels: needs-kip, newbie > > 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 to turn UUIDs into strings or byte arrays and use > their 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. We would also wrap > these in a Serde and modify the streams Serdes class to include this in the > list of supported types. > Optionally, we could have the deserializer support a 16-byte representation > and it would check the 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. > Similary, if the deserializer supported a 16-byte representation, there could > be two variants of the serializer, a UUIDStringSerializer and a > UUIDBytesSerializer. > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)