Imports
- github.com/grpc-ecosystem/go-grpc-middleware
- github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc
- github.com/opentracing/opentracing-go
- github.com/sirupsen/logrus
- github.com/spf13/viper
- google.golang.org/grpc
- google.golang.org/grpc/connectivity
- google.golang.org/grpc/credentials