Imports gitee.com/jiangnan117/go-micro/v2/client gitee.com/jiangnan117/go-micro/v2/metadata gitee.com/jiangnan117/go-micro/v2/registry gitee.com/jiangnan117/go-micro/v2/server github.com/opentracing/opentracing-go github.com/opentracing/opentracing-go/log Standard library imports context fmt strings