Support multipart/form-data requests about fastify-openapi-glue

[seriousme]

Hi,

fastify-openapi-glue only supports the bodypart types that Fastify supports and Fastify does not support multipart/form-data out of the box.

There is however a multipart/form-data plugin for fastify that you could try. You would need to register both openapi-glue and multiPart on the same fastify instance. Fastify-openapi-glue will still report the:

body type: multipart/form-data found

On startup as it does not have a way to detect that you have a plugin loaded for that specific body type.

I haven't tried it myself so I'd be happy to hear if that works !

Kind regards,
Hans

[batodev]

I tried, now it returns Bad Request

{
  "statusCode": 400,
  "error": "Bad Request",
  "message": "body should be object"
}

and it lets me send Json body even if multipart/form-data is the only allowed content-type in Swagger spec.

Thank you for your help!
Tommaso

[seriousme]

From: https://github.com/fastify/fastify-multipart

You can also use all the parsed HTTP request parameters to the body:

const options = {
  addToBody: true,
  sharedSchemaId: 'MultipartFileType', // Optional shared schema id
  onFile: (fieldName, stream, filename, encoding, mimetype, body) => {
    // Manage the file stream like you need
    // By default the data will be added in a Buffer
    // Be careful to accumulate the file in memory!
    // It is MANDATORY consume the stream, otherwise the response will not be processed!
    // The body parameter is the object that will be added to the request
    stream.resume()
  },
  limit: { /*...*/ } // You can the limit options in any case
}

fastify.register(require('fastify-multipart'), options)

That should solve your empty body problem.

As for blocking normal JSON payloads you could either look at req.headers in your service.js or you could try to modify the application/json parser so that it always returns an error.

Kind regards,
Hans

[batodev]

Thank you again, I will try! :)

Tommaso

[github-actions]

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[jonasgroendahl]

im struggling on this

did you solve it @batodev ?