package com.dy.rtuMw.resource.rtuLog;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStreamWriter;
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import com.dy.rtuMw.resource.ResourceUnit;
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import org.apache.logging.log4j.LogManager;
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import org.apache.logging.log4j.Logger;
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import com.dy.common.util.DateTime;
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import com.dy.common.queue.Queue;
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import com.dy.common.threadPool.ThreadPool;
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import com.dy.common.threadPool.TreadPoolFactory;
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public class RtuLogManager {
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private static final Logger log = LogManager.getLogger(RtuLogManager.class) ;
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private static final RtuLogManager instance = new RtuLogManager() ;
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private static final Queue logQueue = new Queue("rtuLogQueue") ;
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private static final Integer maxNodeAddWorkThread = 500 ;//缓存达到这个数量，将增加线程
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private static final Integer maxWorkThread = 5 ;//最大工作线程数
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private static final Object maxWorkThreadSynObj = new Object() ;//最大工作线程数
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private static int workThread = 0 ;//工作线程数
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private RtuLogManager(){
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}
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@SuppressWarnings("unused")
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public static RtuLogManager getInstance(){
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return instance ;
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}
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/**
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* 设置队列限制
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* @param warnSize 队列节点数量 报警值
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* @param maxSize 队列节点数量 最大值
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*/
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@SuppressWarnings("unused")
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public void setQueueLimit(int warnSize, int maxSize){
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logQueue.setLimit(warnSize, maxSize);
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}
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/**
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* 加入Rtu日志数据
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* 在单线程中执行
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* @param logNodeObj 日志队列节点对象
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* @throws Exception 异常
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*/
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public void pushRtuLog(RtuLogNode logNodeObj) throws Exception{
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logQueue.pushTail(logNodeObj);
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//在单线程中执行
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if(workThread <= 0){
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startWorkThread() ;
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}
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}
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/**
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* 启动工作线程工作
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*/
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private void startWorkThread(){
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workThread ++ ;
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try {
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TreadPoolFactory.getThreadPoolShort().putJob(new ThreadPool.Job() {
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public void execute() {
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while(logQueue.size() > 0){
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RtuLogNode node ;
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if(workThread > 1){
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synchronized(logQueue){
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node = (RtuLogNode)logQueue.pop() ;
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}
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}else{
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node = (RtuLogNode)logQueue.pop() ;
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}
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if(node != null){
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//日志文件存储
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log(node.rtuAddr, node.content) ;
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}
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if(RtuLogManager.logQueue.size() > maxNodeAddWorkThread){
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if(workThread < maxWorkThread){
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synchronized(maxWorkThreadSynObj){
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if(workThread < maxWorkThread){
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startWorkThread() ;
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}
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}
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}
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}
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}
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workThread -- ;
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if(workThread < 0){
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workThread = 0 ;
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}
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}
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/*
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* 强制停止execute方法中执行的死循环工作
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*/
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@Override
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public void destroy() {
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//再将启动，防止无线程处理了
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startWorkThread() ;
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}
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/**
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* execute方法中调用此方法判断是否结束死循环工作
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*/
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@Override
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public boolean isDestroy() {
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return false;
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}
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}) ;
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}catch(Exception e){
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log.error(e);
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workThread -- ;
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if(workThread < 0){
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workThread = 0 ;
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}
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}
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}
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/**
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* 记录Rtu日志
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* @param rtuAddr 控制器地址
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* @param conent 日志内容
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*/
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private void log(String rtuAddr , String conent){
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File f = getFileForWrite(ResourceUnit.confVo.rtuLogDir , rtuAddr.trim()) ;
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if(f != null){
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writeLog(f , DateTime.yyyy_MM_dd_HH_mm_ss() + " " + conent) ;
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}else{
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log.error("不能得到地址为:" + rtuAddr + "的Rtu日志文件！") ;
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}
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}
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/**
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* 得到日志文件
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* @param path 文件路径
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* @param rtuAddr 控制器地址
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* @return 日志文件
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*/
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private File getFileForWrite(String path , String rtuAddr) {
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File dir = new File(path) ;
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if(!dir.exists()){
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if(!dir.mkdirs()){
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return null ;
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}
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}
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File f = new File(path + rtuAddr + ".log");
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FileInputStream in = null;
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try {
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if (f.exists()) {
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in = new FileInputStream(f);
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if(in.available() >= ResourceUnit.confVo.rtuLogFileMaxSize){
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in.close() ;//必须加上此语句
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File oldestLog = new File(path + rtuAddr + ".log." + (ResourceUnit.confVo.rtuLogFileMaxCount - 1)) ;
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if(oldestLog.exists()){
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if(!oldestLog.delete()){
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return null ;
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}
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}
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for(int i = (ResourceUnit.confVo.rtuLogFileMaxCount - 2) ; i > 0 ; i--){
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File oldLog = new File(path + rtuAddr + ".log." + i) ;
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if(oldLog.exists()){
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if(!oldLog.renameTo(new File(path + rtuAddr + ".log." + (i + 1)))){
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return null ;
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}
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if(!oldLog.delete()){
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return null ;
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}
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}
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}
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if(!f.renameTo(new File(path + rtuAddr + ".log." + 1))){
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return null ;
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}
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if(!f.delete()){
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return null ;
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}
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f = new File(path + rtuAddr + ".log");
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if(!f.exists()){
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if(f.createNewFile()){
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return f ;
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}else{
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return null ;
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}
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}
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}else{
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return f ;
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}
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}else{
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if(f.createNewFile()){
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return f ;
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}else{
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return null ;
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}
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}
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} catch (Exception e) {
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log.error("得到Rtu(" + rtuAddr + ")日志文件时出错" , e) ;
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}finally{
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try {
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if (in != null) {
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in.close();
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}
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} catch (IOException e) {
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log.error("关闭Rtu日志文件(" + f.getName() + ")读入流时出错" , e) ;
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}
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}
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return null;
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}
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/**
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* 向文件中写入日志
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* @param f 文件
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* @param conent 日志内容
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*/
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private void writeLog(File f, String conent) {
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if (f.exists()) {
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BufferedWriter out = null;
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try {
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out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(f, true))); // 参数为true，表示追加内容
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out.write(conent + "\n");
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} catch (Exception e) {
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log.error("写入Rtu日志文件(" + f.getName() + ")时出错" , e) ;
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} finally {
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try {
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if (out != null) {
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out.close();
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}
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} catch (IOException e) {
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log.error("关闭Rtu日志文件(" + f.getName() + ")写出流时出错" , e) ;
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}
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}
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}
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}
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}
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