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Java Model
There is a newer version: 1.1.5
package com.litongjava.aio;

import java.nio.ByteBuffer;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicLong;

/**
 *
 * @author tanyaowu 2017年4月1日 上午9:34:59
 */
public class Packet implements java.io.Serializable, Cloneable {
  private static final long serialVersionUID = 5275372187150637318L;
  private static final AtomicLong ID_ATOMICLONG = new AtomicLong();
  private Long id = ID_ATOMICLONG.incrementAndGet();
  /**
   * 本packet在解码时，消耗的字节数
   */
  private int byteCount = 0;
  private Long respId = null;
  //private PacketListener packetListener;
  private boolean isBlockSend = false;
  private Meta meta = null;

  /**
   * 消息是否是另外一台机器通过topic转过来的，如果是就不要死循环地再一次转发啦 这个属性是tio内部使用，业务层的用户请勿使用
   */
  private boolean isFromCluster = false;
  /**
   * 同步发送时，需要的同步序列号
   */
  private Integer synSeq = 0;
  /**
   * 预编码过的bytebuffer，如果此值不为null，框架则会忽略原来的encode()而直接用此值
   */
  private ByteBuffer preEncodedByteBuffer = null;
  /**
   * 是否已经进行ssl加密过
   */
  private boolean isSslEncrypted = false;

  protected boolean keepedConnection = true;

  public void setKeepedConnectin(boolean keepedConnection) {
    this.keepedConnection = keepedConnection;
  }

  public boolean isKeepedConnection() {
    return keepedConnection;
  }

  @Override
  public Packet clone() {
    try {
      Packet ret = (Packet) super.clone();
      ret.setPreEncodedByteBuffer(null);
      ret.setSslEncrypted(false);
      return ret;
    } catch (CloneNotSupportedException e) {
      e.printStackTrace();
      return null;
    }
  }

  /**
   * @return the byteCount
   */
  public int getByteCount() {
    return byteCount;
  }

  /**
   * @return the id
   */
  public Long getId() {
    return id;
  }

  /**
   * @return the preEncodedByteBuffer
   */
  public ByteBuffer getPreEncodedByteBuffer() {
    return preEncodedByteBuffer;
  }

  /**
   * @return the respId
   */
  public Long getRespId() {
    return respId;
  }

  /**
   * @return the synSeq
   */
  public Integer getSynSeq() {
    return synSeq;
  }

  /**
   * @return the isBlockSend
   */
  public boolean isBlockSend() {
    return isBlockSend;
  }

  public String logstr() {
    return "";
  }

  /**
   * @param isBlockSend the isBlockSend to set
   */
  public void setBlockSend(boolean isBlockSend) {
    this.isBlockSend = isBlockSend;
  }

  /**
   * @param byteCount the byteCount to set
   */
  public void setByteCount(int byteCount) {
    this.byteCount = byteCount;
  }

  /**
   * @param id the id to set
   */
  public void setId(Long id) {
    this.id = id;
  }

  /**
   * @param preEncodedByteBuffer the preEncodedByteBuffer to set
   */
  public void setPreEncodedByteBuffer(ByteBuffer preEncodedByteBuffer) {
    this.preEncodedByteBuffer = preEncodedByteBuffer;
  }

  /**
   * @param respId the respId to set
   */
  public void setRespId(Long respId) {
    this.respId = respId;
  }

  /**
   * @param synSeq the synSeq to set
   */
  public void setSynSeq(Integer synSeq) {
    this.synSeq = synSeq;
  }

  public boolean isFromCluster() {
    return isFromCluster;
  }

  public void setFromCluster(boolean isFromCluster) {
    this.isFromCluster = isFromCluster;
  }

  public boolean isSslEncrypted() {
    return isSslEncrypted;
  }

  public void setSslEncrypted(boolean isSslEncrypted) {
    this.isSslEncrypted = isSslEncrypted;
  }

  public Meta getMeta() {
    return meta;
  }

  public void setMeta(Meta meta) {
    this.meta = meta;
  }

  public static class Meta implements java.io.Serializable {
    private static final long serialVersionUID = 6209036094326369490L;
    private Boolean isSentSuccess = false;
    private CountDownLatch countDownLatch = null;

    public Boolean getIsSentSuccess() {
      return isSentSuccess;
    }

    public void setIsSentSuccess(Boolean isSentSuccess) {
      this.isSentSuccess = isSentSuccess;
    }

    public CountDownLatch getCountDownLatch() {
      return countDownLatch;
    }

    public void setCountDownLatch(CountDownLatch countDownLatch) {
      this.countDownLatch = countDownLatch;
    }

  }

}