Enabled     bool   `json:"enabled"`
	PathPrefix  string `json:"pathPrefix"`
	CoreDNSPath string `json:"coreDNSPath"`
	clientv3.Config
}

// New - initialize new etcd client.
func New(cfg Config) (*clientv3.Client, error) {
	if !cfg.Enabled {
		return nil, nil
	}
	cli, err := clientv3.New(cfg.Config)
	if err != nil {
		return nil, err
	}
	cli.KV = namespace.NewKV(cli.KV, cfg.PathPrefix)

}

func saveKeyEtcd(ctx context.Context, client *etcd.Client, key string, data []byte, opts ...options) error {
	timeoutCtx, cancel := context.WithTimeout(ctx, defaultContextTimeout)
	defer cancel()
	if len(opts) > 0 {
		return saveKeyEtcdWithTTL(ctx, client, key, data, opts[0].ttl)
	}
	_, err := client.Put(timeoutCtx, key, string(data))
	etcdLogIf(ctx, err)
	return etcdErrToErr(err, client.Endpoints())
}