Can MultipartFormDataOutput be used with quarkus-rest-client?

[kronst]

I have a question regarding org.jboss.resteasy.plugins.providers.multipart.MultipartFormDataOutput.

In my current project, I'm using quarkus-resteasy-client, and this class allows me to upload files via multipart/form-data using InputStream, fully streamed, without buffering everything into memory — which is perfect for my use case.

I'm now migrating to quarkus-rest-client (formerly resteasy-reactive), and it seems that MultipartFormDataOutput is no longer supported. The reactive client only allows multipart via ClientMultipartForm, which does not support InputStream and buffers everything (even Multi<Byte>) in memory.

Is there any way to use MultipartFormDataOutput with quarkus-rest-client to preserve streaming behavior?
Or is it only supported in the classic client?

Thanks in advance for the clarification!

[jamezp]

I'd suggest asking this on https://github.com/quarkusio/quarkus/discussions. They would likely know more there. I'm about to go on PTO for 1.5 weeks so I might be a bit slow to reply :)

[kronst]

Hi, James.
I've already had a discussion with Quarkus team: quarkusio/quarkus#47811
But it's not really related to the multipart provider. It's about the possibility of streaming data using new client in any available way.
So now I also want to ask here, because currently I'm using org.jboss.resteasy:resteasy-multipart-provider in my project and your implementation of MultipartFormDataOutput 😅

[jamezp]

Ah, my apologies. It might be related to https://github.com/orgs/resteasy/discussions/4583 then.

[kronst]

Well, we use different infrastructure, but the main problem really might be similar.
Then, I think, we can close this discussion and I'll subscribe to the provided one.
Thanks, and have a great time during your PTO 😉

[jamezp]

Thank you!