resteasy-reactive multipart and swagger upload file

[MikhailMalyutin]

Hi.

Looks like mutiny api is deprecated and quarkus suggest to migrate to resteasy-reactive.

But, after migration i catch some problems.

Before migration to reactive form part was:

@PartType(MediaType.APPLICATION_OCTET_STREAM)
@field:Schema(type= SchemaType.STRING, description = "input", format = "binary")
var fileStream: InputStrean? = null

But in this case looks like APPLICATION_OCTET_STREAM is ignored and file is uploaded as text.

I read recommendations from https://quarkus.io/guides/resteasy-reactive#handling-multipart-form-data and see now it is recommended to use File or FileUpload. But if i use code like:

@RestForm("file")
@PartType(MediaType.APPLICATION_OCTET_STREAM)
@field:Schema(type= SchemaType.STRING, description = "input", format = "binary")
var fileStream: File? = null

then swagger don't see Schema and upload button is not displayed.

Are some standart way to have needed functionality?

I found some workaround like https://dev.to/felipewind/uploading-a-file-through-swagger-in-quarkus-3l8l but this solution with manual describing schema is not elegant.

[quarkus-bot[bot]]

/cc @FroMage (resteasy-reactive), @MikeEdgar (swagger-ui), @Sgitario (resteasy-reactive), @geoand (resteasy-reactive), @phillip-kruger (swagger-ui), @stuartwdouglas (resteasy-reactive)

[MikeEdgar]

@MikhailMalyutin do you have a small reproducer app that we can look at?

[MikhailMalyutin]

https://github.com/MikhailMalyutin/bug-reproducer

[MikeEdgar]

@MikhailMalyutin , please try adding implementation = String::class to your @field:Schema on the File property. Until this is handled automatically in smallrye-open-api, that hint will set the correct type on the schema.

[MikhailMalyutin]

Thanks, all works fine!

[kps2024]

Thanks. It is working. I tried like

@RestForm("profile_picture")
@PartType(MediaType.APPLICATION_OCTET_STREAM)
@Schema(type = SchemaType.STRING, format = "binary", description = "Uploaded image file", implementation = String.class)
public FileUpload profilePicture;