queueSizeCfgVal := getCfgVal(EnvKafkaQueueSize, k, kv.Get(KafkaQueueSize))
		queueSize, err := strconv.Atoi(queueSizeCfgVal)
		if err != nil {
			return cfg, err
		}
		if queueSize <= 0 {
			return cfg, errInvalidQueueSize
		}
		kafkaArgs.QueueSize = queueSize

		cfg.AuditKafka[k] = kafkaArgs
	}

	return cfg, nil
}

		},
		config.HelpKV{
			Key:         BatchSize,
			Description: "Number of events per HTTP send to webhook target",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         QueueSize,
			Description: "configure channel queue size for webhook targets",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         QueueDir,

     */
    public SimplexTransferListener(
            TransferListener delegate, int queueSize, int batchMaxSize, boolean blockOnLastEvent) {
        this.delegate = requireNonNull(delegate);
        if (queueSize < 1 || batchMaxSize < 1) {
            throw new IllegalArgumentException("Queue and batch sizes must be greater than 1");
        }

	AuthToken   string            `json:"authToken"`
	ClientCert  string            `json:"clientCert"`
	ClientKey   string            `json:"clientKey"`
	BatchSize   int               `json:"batchSize"`
	QueueSize   int               `json:"queueSize"`
	QueueDir    string            `json:"queueDir"`
	MaxRetry    int               `json:"maxRetry"`
	RetryIntvl  time.Duration     `json:"retryInterval"`
	Proxy       string            `json:"string"`

	SASL struct {
		Enable    bool   `json:"enable"`
		User      string `json:"username"`
		Password  string `json:"password"`
		Mechanism string `json:"mechanism"`
	} `json:"sasl"`
	// Queue store
	QueueSize int    `json:"queueSize"`
	QueueDir  string `json:"queueDir"`

	// Custom logger
	LogOnce func(ctx context.Context, err error, id string, errKind ...interface{}) `json:"-"`
}

// Target - Kafka target.
type Target struct {

    return capAtMaximumSize(newCapacity, maximumSize);
  }

  /** There's no reason for the queueSize to ever be more than maxSize + 1 */
  private static int capAtMaximumSize(int queueSize, int maximumSize) {
    return min(queueSize - 1, maximumSize) + 1; // don't overflow
  }

    return capAtMaximumSize(newCapacity, maximumSize);
  }

  /** There's no reason for the queueSize to ever be more than maxSize + 1 */
  private static int capAtMaximumSize(int queueSize, int maximumSize) {
    return min(queueSize - 1, maximumSize) + 1; // don't overflow
  }