Function WithTag

rpc/rpc.go:39–47

(key string, val string)

}

func WithTag(key string, val string) Option {
	return func(r *http.Request) {
		full := fmt.Sprintf("%s=%q", key, val)
		if prev := r.Header.Get("x-subtrace-tags"); prev != "" {
			full = prev + " " + full
		}
		r.Header.Set("x-subtrace-tags", full)
	}
}

var defaultOptions = []Option{
	WithToken(),