session, err := client.NewSession()
defer session.Close()
if err != nil {
	logger.GetLogInstance().ErrorLogger.Error(fmt.Sprintf("new session error: %s", err.Error()))
	return "", err
}

result, err := session.Output(command)   // code stuck here
if err != nil {
	logger.GetLogInstance().ErrorLogger.Error(fmt.Sprintf("Failed to run command:%s, Err:%s", command, err.Error()))
	return "", err
}
logger.GetLogInstance().DebugLogger.Debug("run command:", command, " result:", string(result))
return string(result), nil