Code generation turns Protobuf message and service definitions into Go source files for a gRPC application. The protoc compiler coordinates language-specific plugins and output paths. section 10.1.2
A practical generation workflow:
- Install protoc, then install protoc-gen-go and protoc-gen-go-grpc with Go. section 10.1.2
- Compile .proto files with --go_out, --go-grpc_out, and source_relative path options. section 10.1.2
- Add -I when files import definitions from another directory, then automate the command with go:generate. section 10.1.2
> protoc -I=api/proto/ --go_out=api/ --go_opt=paths=source_relative
--go-grpc_out=api/ --go-grpc_opt=paths=source_relative
api/proto/*.proto
Use the complete protoc command to generate both ordinary Go types and gRPC service code from the API definitions. section 10.1.2
Generated project layout
After generation, the api directory contains the original proto files alongside habit.pb.go, service.pb.go, service_grpc.pb.go, and generate.go. section 10.1.2
