package com.dy.rtuMw.server.forMs;

import com.dy.common.queue.Node;
import com.dy.common.queue.Queue;
import com.dy.rtuMw.server.ServerProperties;

/**
 * @Author: liurunyu
 * @Date: 2024/7/31 18:47
 * @Description
 */
public class SendMsCache {

    //TCP下行命令缓存队列
    private static Queue cacheQueue = new Queue("SendMsCache") ;

    private static SendMsCache instance = new SendMsCache() ;

    private SendMsCache(){
        cacheQueue.setLimit(ServerProperties.cacheUpDownDataWarnCount, ServerProperties.cacheUpDownDataMaxCount);
    }

    public static SendMsCache getInstance(){
        return instance ;
    }

    /**
     * 缓存命令
     * @param ms
     * @throws Exception
     */
    public static void cacheMs(String ms) throws Exception{
        cacheQueue.pushTail(new MsObj4Ding(ms));
    }

    /**
     * 得到第一个节点
     * @return
     */
    public static Node getFirstQueueNode(){
        return cacheQueue.getFirstNode() ;
    }

    /**
     * 得到最后一个节点
     * @return
     */
    public static Node getLastQueueNode(){
        return cacheQueue.getLastNode() ;
    }

    /**
     * 移除节点
     * @param node
     */
    public static void removeNode(Node node){
        cacheQueue.remove(node);
    }

    /**
     * 缓存的节点数
     * @Return 缓存节点数
     */
    public static Integer size(){
        return cacheQueue.size() ;
    }

}