Imports
- github.com/julienschmidt/httprouter
- github.com/opentracing/opentracing-go
- github.com/opentracing/opentracing-go/ext
- github.com/opentracing/opentracing-go/log
- github.com/pkg/errors
- github.com/urfave/negroni
- go.uber.org/zap
- go.uber.org/zap/zapcore
- google.golang.org/grpc/codes
- google.golang.org/grpc/status