com_newrelic_trace_v1

To generate the v1.pb.go code, run the following from the top level github.com/edwardofclt/newrelic-go-agent package:

protoc --go_out=paths=source_relative,plugins=grpc:. v3/internal/com_newrelic_trace_v1/v1.proto

Be mindful which version of protoc-gen-go you are using. Upgrade protoc-gen-go to the latest with:

go get -u github.com/golang/protobuf/protoc-gen-go

When you regenerate the file

Once you have generated the code, you will need to add a build tag to the file:

// +build go1.9

This is because the gRPC/Protocol Buffer libraries only support Go 1.9 and above.