*/
    public SimplexTransferListener(TransferListener delegate) {
        this(delegate, QUEUE_SIZE, BATCH_MAX_SIZE, true);
    }

    /**
     * Constructor that may alter behaviour of this listener.
     *
     * @param delegate The delegate that should run on single thread.
     * @param queueSize The event queue size (default {@code 1024}).

		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
}

        return String.format("BufferCache: queued=%d, max=%d, utilization=%.1f%%", queueSize.get(), MAX_BUFFERS,
                (queueSize.get() * 100.0 / MAX_BUFFERS));
    }

    /**
     * Clear all cached buffers (for testing or cleanup)
     */
    public static void clearCache() {
        bufferQueue.clear();
        queueSize.set(0);
    }

	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 ...any) `json:"-"`
}

// Target - Kafka target.
type Target struct {

	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"`

    }

    this.key = ByteArray(16).apply { random.nextBytes(this) }.toByteString().base64()
  }

  override fun request(): Request = originalRequest

  @Synchronized override fun queueSize(): Long = queueSize

  override fun cancel() {
    call!!.cancel()
  }

  fun connect(client: OkHttpClient) {
    if (originalRequest.header("Sec-WebSocket-Extensions") != null) {

    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
  }

    var messageCount: Long = 0
    while (true) {
      val success = webSocket.send(message)
      if (!success) break
      messageCount++
      val queueSize = webSocket.queueSize()
      assertThat(queueSize).isBetween(0L, messageCount * message.size)
      // Expect to fail before enqueueing 32 MiB.
      assertThat(messageCount).isLessThan(32L)
    }

			if len(toSend) == 0 {
				continue
			}
		}
		if len(queue) < maxMergeMessages && queueSize+len(toSend) < writeBufferSize-1024 {
			if len(c.outQueue) == 0 {
				// Yield to allow more messages to fill.
				runtime.Gosched()
			}
			if len(c.outQueue) > 0 {
				queue = append(queue, toSend)
				queueSize += len(toSend)
				continue
			}
		}
		c.outMessages.Add(int64(len(queue) + 1))

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        if (clickLogQueue.size() > fessConfig.getLoggingClickMaxQueueSizeAsInteger()) {
            logger.warn("Click log queue size exceeded: queueSize={}, limit={}. Skipped.", clickLogQueue.size(),
                    fessConfig.getLoggingClickMaxQueueSizeAsInteger());
            return;
        }
        clickLogQueue.add(clickLog);
    }

    /**