Add default endpoint for REST server

[okwme]

Summary

The default endpoint for the Tendermint RPC shows all the available queries. This is also useful just to make sure the node is running (https://rpc.cosmos.network).

However, the default REST client shows a 404 (http://api.cosmos.network) and you need to go to /node_info or another GET request without parameters to check if it's online. It would be nice if we could offer a default endpoint that was more reassuring than a 404. Either some sort of "Hello World!" message or set the default route to be the same as /node_info?

Problem Definition

Proposal

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[alexanderbez]

ACK -- I would personally love to lay out all the endpoints like Tendermint does. Would this be something you'd be willing to look into and implement @okwme?

[okwme]

ja would be happy to look into it!

[tac0turtle]

on the Tendermint side, we want to move away from what we have now and if possible go to using the generated swagger. Here it may make sense to use the swagger for now, and then once we have auto-generate swagger files it would show only that

[okwme]

ooooo i love this idea!

…

On Tue, Feb 4, 2020 at 10:04 AM Marko ***@***.***> wrote: on the Tendermint side, we want to move away from what we have now and if possible go to using the generated swagger. Here it may make sense to use the swagger for now, and then once we have auto-generate swagger files it would show only that — You are receiving this because you were assigned. Reply to this email directly, view it on GitHub <#5607?email_source=notifications&email_token=AAHLLVFKN3ZVKS5YOI3WFI3RBEVSLA5CNFSM4KPIMAYKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEKW3FAQ#issuecomment-581808770>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAHLLVEPEBAASZPF2D4E7QLRBEVSLANCNFSM4KPIMAYA> .

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[alexanderbez]

Sure, that also works. In that case, just simply update this method:

func (rs *RestServer) registerSwaggerUI() {
	statikFS, err := fs.New()
	if err != nil {
		panic(err)
	}
	staticServer := http.FileServer(statikFS)
	rs.Mux.PathPrefix("/swagger-ui/").Handler(http.StripPrefix("/swagger-ui/", staticServer))
}

I suppose we should use / instead of /swagger-ui/