how to deal with byte array mapping ?

[beeondev]

suppose i have a openapi.yaml whith :

    ...
    responses:
        "200":
          description: OK
          content:
            application/octet-stream:
              schema:
                 type: string
                 format: binary 
      ...

What i want is to build mapping.yaml in order to return a Mono<ResponseEntity<byte[]>>.

How can i achieve that ?
(this is because i have as legacy code signature i do not want to break)

[hauner]

looks like Mono<ResponseEntity<byte[]>> isn't something the processor can generate at the moment. The mapping parser doesn't handle primitive types.

a workaround is to exclude the endpoint

map:
  paths:
    /my-endpoint:
      exclude: true

and write the controller method yourself.

or

you could try to replace the byte[] with something like java.nio.ByteBuffer (as an endpoint specific mapping). But I don't know if Spring can serialize this out of the box.

map:
  paths:
    /my-endpoint:
      types:
       - type: string:binary => java.nio.ByteBuffer

to generate the Mono and ResponseEntity you need:

map:
  result: org.springframework.http.ResponseEntity

  single: reactor.core.publisher.Mono
  multi: reactor.core.publisher.Flux

note that the processor generates ResponseEntity<Mono<..>>. It should still work.

If for some reason it must be Mono<ResponseEntity<..>> you could switch the result and single mapping (on the endpoint level), but that is a bit hacky..

paths:
  /my-endoint:
    result: reactor.core.publisher.Mono
    single: org.springframework.http.ResponseEntity

[hauner]

openapi-processor/openapi-processor-base#59