gen and protobuf

[kanekv]

gen and protobuf

[clipperhouse]

Hmm, sounds like not a great idea. gen is for your types -- I assume that the generated proto files represent an external package's types?

[kanekv]

Why? Protobuf could be used to exchange data between my own services. They are my own types, just defined differently.

[clipperhouse]

Fair, though I don't have a good suggestion off the top of my head. Show me some sample code?

[pavelsmejkal]

Well there are not many things to show. Protobuf it self generates some interfaces for example.

type ChannelStoreClient interface {
Ping(ctx context.Context, in _Client, opts ...grpc.CallOption) (_Response, error)
....
}

One option would be to have a possibility to add those custom types to "gen" explicitly by command line argument for example.

gen -type 'ChannelStoreClient slice:"Where,Count,GroupBy[string]"'

or support comments like this
// +gen slice:"Where,Count,GroupBy[string]"
// +type ChannelStoreClient

[joeblew99]

@Kane-Sendgrid
@clipperhouse

This might help: https://github.com/Softwee/Anakin
Anakin takes a GRPC and via AST allows me to get in the middle of it to control exactly what gets code generated. I plan to use it for a bigger code gen project.

clipperhouse/gen can then be used to produce types with extra functionality i need.

SO you are code generating code, and that produced code is used for another coe gen pass.
I knwo the team at goa have written about this and have a multi.stage code generator too, which might be worth studying. i plan to look at it also.