Imports github.com/felixge/httpsnoop github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/ext github.com/sirupsen/logrus google.golang.org/grpc google.golang.org/grpc/codes google.golang.org/grpc/metadata google.golang.org/grpc/status Standard library imports context fmt net/http runtime/debug time