Resteasy-Reactive: Read an manipulate body with ContainerRequestContext in a non-blocking wise

[wernert75]

Description

I try to read the body of a REST-Request within a ContainerRequestFilter.

            InputStream is = context.getEntityStream();
            byte[] data = is.readAllBytes();
            String body = new String(data, StandardCharsets.UTF_8);

Unfortunately this blocks the io-thread.

I think it's really useful in an complete reactive approach to access and modify the body in a filter, that is not blocking the io-thread.

[quarkus-bot]

/cc @FroMage, @geoand, @stuartwdouglas

[stuartwdouglas]

You need to mark the filter as @Blocking. @FroMage @geoand it looks like ResteasyReactiveContainerRequestFilter does not help here, as it does not appear to have support for async reads in the API that we expose?

[geoand]

Yeah exactly. That's something we should provide as this is not the first time this has come up

[FroMage]

Yeah, we don't have a way to do an async read unless you use the vert.x APIs directly, and also, we don't have a way for filters to set the body to a stream either for further consumption.

[geoand]

I'll close this in favor of #17280 which has more of a discussion