Support for Kryo serialization library

[atorr0]

Kryo serialization option for https://code.quarkus.io/
Hi,

I've read the serialization extension listed in https://code.quarkus.io/, but I haven't found any reference to Kryo.
I think it could be very nice to have Kryo serialization extension listed.

Thank you,

More info:

• https://github.com/EsotericSoftware/kryo
• https://flink.apache.org/news/2020/04/15/flink-serialization-tuning-vol-1.html

[ia3andy]

@gsmet @gastaldi where should I forward extension request now?

[gastaldi]

It should be created in the quarkusio/quarkus repository as an Extension Proposal

[ia3andy]

Ok so it hasn't changed thanks.. moved..

[geoand]

Where do you envision Kryo would be used?

[atorr0]

Hi @geoand,

Kryo is fast and small, and also produces very efficient serialized output, so I not only envision this component as a general purpose serializer alternative, but I think it may fit in the IoT space.
Kryo IMHO seems mature enough, has a good documentation, with easy to underatand examples, and a good community behind the project.

[geoand]

Yes, there no denying that.
What I am wondering is what use cases do you have in mind for Quarkus?

[gastaldi]

I created FasterXML/jackson-dataformats-binary#328 asking to be implemented as another Jackson Data Binary format

[geoand]

I don't really see how this would be used and we have not got any feedback on it either, so I'll close this as won't fix

[FrodoOf9Fingers]

I am aiming to write an adapter between a legacy system and a new system. I'm looking at using Kryo for dealing with serialization of (very) complex legacy object models that my adapter is constructing from data in the new system.

I came across this today, and seeing that it was just closed, figured I'd throw my use case in. I'm still poking around to see if there is a way to bring it in without direct support in Quarkus.

[geoand]

In that case you would just handle the use of Kryo manually, right?

[FrodoOf9Fingers]

Yep! What I ended up doing is targeting a byte array with the output stream and returning that (though, I've ended up on FST for my needs instead of Kryo). For streaming, I think you could pass a ResteasyReactiveOutputStream into Kryo's Output, though I have not confirmed that.