This process seems to generate conflicting code with go-micro

[EwanValentine]

I'm using go-micro to generate gRPC code, using their custom protoc tool. However, when I generate my gRPC stub using go-micro, then attempt to generate a restful proxy using this library, I get a few conflicting errors.

./models.pb.gw.go:53: cannot use grpc.Header(&metadata.HeaderMD) (type grpc.CallOption) as type client.CallOption in argument to client.Get
./models.pb.gw.go:53: cannot use grpc.Trailer(&metadata.TrailerMD) (type grpc.CallOption) as type client.CallOption in argument to client.Get
./models.pb.gw.go:70: cannot use grpc.Header(&metadata.HeaderMD) (type grpc.CallOption) as type client.CallOption in argument to client.GetAll
./models.pb.gw.go:70: cannot use grpc.Trailer(&metadata.TrailerMD) (type grpc.CallOption) as type client.CallOption in argument to client.GetAll
./models.pb.gw.go:83: cannot use grpc.Header(&metadata.HeaderMD) (type grpc.CallOption) as type client.CallOption in argument to client.Post
./models.pb.gw.go:83: cannot use grpc.Trailer(&metadata.TrailerMD) (type grpc.CallOption) as type client.CallOption in argument to client.Post
./models.pb.gw.go:114: cannot use grpc.Header(&metadata.HeaderMD) (type grpc.CallOption) as type client.CallOption in argument to client.Patch
./models.pb.gw.go:114: cannot use grpc.Trailer(&metadata.TrailerMD) (type grpc.CallOption) as type client.CallOption in argument to client.Patch
./models.pb.gw.go:141: cannot use grpc.Header(&metadata.HeaderMD) (type grpc.CallOption) as type client.CallOption in argument to client.Delete
./models.pb.gw.go:173: RegisterMenusHandler redeclared in this block
	previous declaration at ./models.pb.go:598
./models.pb.gw.go:141: too many errors

I've checked through the generated code and go-micro does generate a RegisterMenusHandler within the same package unfortunately.

Have you come across this issue before? Or used go-micro at all? Just wondered if anyone has found a way around this?

Thanks in advance!

[achew22]

Our project is only set up to support golang/protobuf and gogo/gogoproto directly. It sounds like go-micro isn't exposing all the functionality grpc-gateway needs to work. Maybe you could extend go-micro to expose that information? I'm going to close this since it doesn't seem like an issue with grpc-gateway directly.

[cappuccino5]

I also encounter this kind of problem, how to solve? thank!

.pb.gw.go:43:91: cannot use &metadata.TrailerMD (type *"google. golang.org/grpc/metadata".MD) as type *"win-his/vendor/google.golang.org/grpc/me tadata".MD in argument to grpc.Trailer

[johanbrandhorst]

This is a vendor problem. You've got one version of the metadata package in vendor and another version in the GOPATH. Easiest thing is to remove the package in the GOPATH.