Support generating nodev1.EngineConfiguration from a supergraph

[darren-west]

Hi 👋

I was looking at Cosmo router and was investigating if / how to generate an EngineConfiguration proto message from a Supergraph, so that the gateway could be configured with a supergraph.

I couldnt see any obvious way to achieve this right now, unless I am missing something?

The goal is to be able to pass the router a supergraph and start a cosmo router communicating with subgraphs.

Im guessing this could be possibly be achieved with some of the JavaScript packages although ideally I was looking at using GoLang to achieve it.

Thanks in advance.

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[thisisnithin]

Hi @darren-west , could you please elaborate on your current setup. Are you trying to use Apollo studio with Cosmo Router?

[darren-west]

Hi @thisisnithin not with Apollo Studio but this is a good use case, I think accepting a supergraph gives the router a lot more flexibility.

I have a supergraph generated by composition and wanted to use this to evaluate the router, without using wundergraph schema registry.

[darren-west]

Any update on this? I'm quite keen to look into this although it looks quite involved.

[Aenimus]

Hi @darren-west,

This would be a significant development effort. Please can you help me understand the use-case? Is this simply to avoid needing to supply your subgraphs to the composition library to generate an execution config? But why?

[darren-west]

Hi @Aenimus

Thanks for getting back to me, my main use case would be to support other schema registries such as Apollo and hive (guild). I quite like the approach of a supergraph for describing a distributed graph, feels like a good fit for a platform agnostic configuration.

What composition library were you mentioning, is there an example?

[Aenimus]

Hi @darren-west,

I think this documentation would be helpful.

The wgc command you're looking for is wgc router compose. The docs should feel familiar if you've used Rover before.