package com.dy.rtuMw.server.rtuData;
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import com.dy.rtuMw.server.ServerProperties;
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import com.dy.common.queue.Node;
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import com.dy.common.queue.Queue;
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public class RtuComResultCache {
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//TCP下行命令缓存队列
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private static Queue cacheQueue = new Queue("RtuComResultCache") ;
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private static RtuComResultCache instance = new RtuComResultCache() ;
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private RtuComResultCache(){
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cacheQueue.setLimit(ServerProperties.cacheUpDownDataWarnCount, ServerProperties.cacheUpDownDataMaxCount);
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}
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public static RtuComResultCache getInstance(){
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return instance ;
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}
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/**
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* 缓存节点
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* @param node node
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* @throws Exception 异常
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*/
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public static void cacheRtuComResult(RtuComResultNode node) throws Exception{
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if(node != null && node.obj != null){
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cacheQueue.pushHead(node);
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}
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}
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/**
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* 得到第一个节点
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* @return Node
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*/
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public static Node getFirstQueueNode(){
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return cacheQueue.getFirstNode() ;
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}
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/**
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* 得到最后一个节点
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* @return Node
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*/
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public static Node getLastQueueNode(){
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return cacheQueue.getLastNode() ;
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}
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/**
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* 移除节点
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* @param node
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*/
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public static void removeNode(Node node){
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cacheQueue.remove(node);
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}
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/**
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* 缓存的节点数
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* @Return 缓存节点数
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*/
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public static Integer size(){
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return cacheQueue.size() ;
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}
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}
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