package org.kne.cloud.network.klalb;

import java.util.Arrays;
import java.util.Objects;
import java.util.UUID;
import java.util.concurrent.atomic.AtomicLong;

import org.kne.cloud.network.mport.IPPort;

public class KLALBBlock implements Comparable<KLALBBlock>{
	private static AtomicLong sng=new AtomicLong(1);
	
	public volatile long sn;//每个数据包的唯一编号
	public volatile int cuid;//用于识别数据包的stream ID号
	public volatile long number;//数据包的编号，用于排序
	public volatile byte[]data;//数据内容
	public volatile int command;//功能标记 0=PING 1=PONG 2=SYN 3=RST 4=KEEP
	public volatile long pingtime;//PING计时器
	public volatile int cacheused;
	
	public volatile String lservice;
	public volatile IPPort lipport;

	public transient volatile long sendtime;
	public transient volatile int resend;

	public volatile long sendtimeForRTT;
	
	
	public KLALBBlock() {
		sn=sng.getAndIncrement();
	}



	@Override
	public String toString() {
		StringBuilder sb=new StringBuilder();
		sb.append(cuid);
		sb.append(' ');
		if(number>0) {
			if(data==null) {
				sb.append("DATA").append(number).append(':').append("EOF");
			}else {
			sb.append("DATA").append(number).append(':').append(data.length);
			}
		}else if(number<0) {
			sb.append("ACK").append(-number).append(':').append(cacheused);
		}else {
			switch(command) {
			case 0:
				sb.append("PING");
				break;
			case 1:
				sb.append("PONG");
				break;
			case 2:
				sb.append("SYN:").append(lservice).append(" ").append(lipport);
				break;
			case 3:
				sb.append("RST");
				break;
			}
		}
		return sb.toString();
	}



	@Override
	public int compareTo(KLALBBlock o) {
		if(o.number>number) {
			return -1;
		}else if(o.number<number){
			return 1;
		}else {
		return 0;
		}
	}
	
}