Imports github.com/golang/protobuf/proto goa.design/goa/middleware/xray goa.design/goa/middleware google.golang.org/grpc/metadata goa.design/goa/grpc/middleware google.golang.org/grpc/codes google.golang.org/grpc/status google.golang.org/grpc google.golang.org/grpc/peer Standard library imports context fmt io net sync time