SAP CAPIRE 7.0 and external REST Services + Binary Data

[matteoprinetti]

Im implementing a CAP Server with fetches Images from a external Service.

The cds is

entity ImageResource {
    key id              : String;
    content         : LargeBinary @Core.MediaType: 'image/jpeg';   
}

I connect to the service using cds.connect.to

 const extApi = await cds.connect.to({
      kind: "rest", 
      impl: "srv/external/myApi.js",
      credentials: {
        url: process.env.SERVER_URL
      }
    });

And in my Rest implementation I fetch the image:

req.query = `GET /api/planogram/resource/image/` + req.query.SELECT.from.ref[0].where[2].val;

The problem: the remote service implementation from Capire use Axios to get the data: The only way I found to set the ResponsType to arrayBuffer is:

req._binary = true;

I think this is a bug somewhere in cds runtime lib / or the documentation how to set this flag beside using the _binary is missing.
I For the records reading the image and giving it back to odata is straightforward:

  const response = await next(req);
        const readable = new Readable();
        readable.push(response);
        readable.push(null);
        return [{
          value: readable,
          $mediaContentType: 'image/jpeg'
        }]

[snehal_kendre]

Hi,

did you get solution on how to set _binary flag in request?

i have same requirement. Through CAPM  connect to SAP document service and pull files for further processing.

 const externaldocsrv = await cds.connect.to('SAPDMS');

const response = await externaldocsrv .transaction(req).get(url);

and i need that response in arraybuffer for further processing