Add StreamFileParam decorator

[tchambard]

In order to be able to pipe the request in express handlers implementations (stream) instead of using multer like typescript-rest is doing with FileParam decorator, the new StreamFileParam decorator will generate the correct swagger button for uploading binary file.

[coveralls]

Coverage increased (+0.8%) to 77.5% when pulling 990aa14 on tchambard:master into fcd2ae9 on thiagobustamante:master.

[ngraef]

Could you help me understand how this is different from the @FileParam decorator? There doesn't seem to be anything different about the generated spec.

Also, please add some tests.

[tchambard]

Hi Nick, sorry for the delay...

I just added some unit tests for @FileParam and @StreamFileParam parameters.

So, the difference between @FileParam and @StreamFileParam is simple.
@FileParam is interpreted by typescript-rest module as a Multer file element, and the content of the multipart request is consumed by the Http server.

With @StreamFileParam, nothing is done, and you still have the chance to pipe your request to another Http server in order to process streaming...

[jackghicks]

@tchambard Hi, did you get your StreamFileParam feature merged into the base typescript-rest project? I was about to implement a similar thing when I stumbled on this pr.

[sberthier]

@ngraef I am really interested by this feature. Streams are different from files as they should be consumed (or piped elsewhere) inside rest handler as said by @tchambard .

Any news ?

[tchambard]

@ngraef I close this PR to reopen a new one in order to rebase correctly my branch with master.

It could be really good to merge it as some other people are interrested...