Fresh install no longer generates necessary `google/api/annotations.pb.go` & `google/api/http.pb.go` files.

[marcusljx]

Fresh install no longer generates necessary google/api/annotations.pb.go & google/api/http.pb.go files.

Action

go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway
go get -u github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger
go get -u github.com/golang/protobuf/protoc-gen-go

generate a proto project someproject.pb.go file, which contains

import _ "github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis/google/api"

Expected
annotations.pb.go and http.pb.go generated successfully in github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis/google/api, and compilation completes properly.

Actual
Files not generated, and compilation fails with the error:

...../grpc-gateway/third_party/googleapis/google/api' has no buildable Go source files.

[tmc]

@marcusljx thank you for your issue report. can you share your full protoc invocation (privately if . needed) as you should get lines more like import _ "google.golang.org/genproto/googleapis/api/annotations"

[tmc]

Just to be clear we intentionally moved to the published go code published at https://godoc.org/google.golang.org/genproto to prevent re-registration of descriptors.

[dong77]

I'm having this very issue right now. How to fix it ?

[tmc]

@dong77 thanks for chiming in -- if your generated go files have github.com/grpc-ecosystem/grpc-gateway/third_party/googleapis/google/api references then you're using an outdated protoc-gen-grpc-gateway

[unship]

@tmc

go get -u github.com/philips/grpc-gateway-example
grpc-gateway-example serve

no buildable Go source files

[unship]

its philips/grpc-gateway-example's makefile not update, my problem solved

[tmc]

I opened philips/grpc-gateway-example#15 to reflect this change.

[marcusljx]

As stated in the above makefile example, this was due to an outdated go_out= parameter in makefiles or //go:generate commands.