MultipartFile support

[hantsy]

Support Upload scalar in schema defintion and handling multipart body.

[rstoyanchev]

One concern with this is that GraphQL doesn't support binary data, so there is an argument for handling uploads outside of GraphQL. Here is one resource with a discussion around this, including pros and cons.

That said, I'm setting this for M2 in order to have look and make a decision as to whether to support this and if so how. At least we can consider what we can do to enable other frameworks to build it on top of Spring GraphQL.

[hantsy]

If it is implemented by the existing Spring Mvc MultipartFile or Spring WebFlux MultiPart, why binary is not supported.

The bad side is in the client building the multiform data satisfies the GraphQL file upload spec is too complex, if there is no GraphQL Client Helper to simplify work, I would like to use the simplest RESTful API for this case.

[hantsy]

When looking into the file upload spec, it supports a batch operations payload item like this.

{
  "operations": [
    {
      "query": "", 
      "variables": "", 
      "operationName":"",
      "extensions":"" 
    },
    {...}
  ],
  "map": {}
  "..."
}

The operations is a requirement from GraphQL spec or just for file uploads? GraphQL over HTTP does not include such an item.

[Teresafrr]

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[MiguelAngelLV]

This is the only feature I need to migrate form Graphql kickstart to Spring Graphql

[Jojoooo1]

Any news on this feature ?

[bclozel]

@MiguelAngelLV @Jojoooo1 please use the voting feature on the issue description itself, as it helps the team to prioritize issues (and creates less notifications).