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Java之Rsync并发迁移数据并校验详解

java调用Rsync并发迁移数据并执行校验 java代码如下
RsyncFile.java

import lombok.NoArgsConstructor; import lombok.SneakyThrows; import java.io.*; import java.util.ArrayList; import java.util.Date; import java.util.concurrent.*; /** * @ClassName RsyncFile * @Descriptiom TODO rsync多线程同步迁移数据 * @Author KING * @Date 2019/11/25 09:17 * @Version 1.2.2 * rsync -vzrtopg --progress --delete//镜像同步 **/@NoArgsConstructorpublic class RsyncFile implementsRunnable{private static final int availProcessors = Runtime.getRuntime().availableProcessors(); //构造以cpu核心数为核心池，cpu线程数为最大池，超时时间为1s，线程队列为大小为无界的安全阻塞线程队列，拒绝策略为DiscardOldestPolicy（）的线程池。（同步数据当然不能丢下拒绝任务）private ExecutorService ThreadPool = new ThreadPoolExecutor(availProcessors >> 1,availProcessors,1L,TimeUnit.SECONDS,new LinkedBlockingQueue<>(),Executors.defaultThreadFactory(),new ThreadPoolExecutor.DiscardOldestPolicy()); //保存扫描得到的文件列表private static ArrayList fileNameList = new ArrayList(); private String shellname; private String filename; private String userip; private CountDownLatch countDownLatch; private static int deep = 0; public RsyncFile(String ShellName, String filename, String UserIP, CountDownLatch countDownLatch) {this.shellname = ShellName; this.filename = filename; this.userip = UserIP; this.countDownLatch = countDownLatch; }public static void main(String[] args) {try {new RsyncFile().Do(args[0],args[1],Integer.parseInt(args[2])); }catch (ArrayIndexOutOfBoundsException e){System.out.println(e); System.out.println("Error , args send fault"); System.out.println("please send localAddress remote username @ remote IP or hostname and catalogue"); System.out.println("like this [/home/test/root@node1:/test/1 ]"); }catch(NumberFormatException e1){System.out.println(e1); System.out.println("please input Right Directory depth, this number must be int"); System.out.println("like this [/home/test/root@node1:/test/1 ]"); }}@SneakyThrowsprivate void Do(String content,String UserIP,int setdeep){System.out.println("开始执行"); System.out.println("开始时间：" + new Date()); Long a = System.nanoTime(); File file = new File(content); System.out.println("开始扫描本地指定目录"); GetAllFile(file,setdeep); //按深度扫描非空文件夹和文件System.out.println("扫描本地目录完成"); //给脚本赋予权限String [] cmd={"/bin/sh","-c","chmod 755 ./do*"}; Runtime.getRuntime().exec(cmd); //创建远端目录操作System.out.println("开始创建远端目录结构"); //一次计数锁用于保证目录创建完成CountDownLatch doDirLock = new CountDownLatch(1); ThreadPool.execute(new RsyncFile("./doDirc.sh",content,UserIP,doDirLock)); doDirLock.await(); System.out.println("创建远端目录结构完成"); //开始同步工作System.out.println("开始执行同步工作"); System.out.println("同步的文件夹或文件总数: " + fileNameList.size()); System.out.println("正在同步。。。。。"); //fileNameList.size()次计数锁用于保证数据同步完成（保证计时准确）CountDownLatch rsyncLock = new CountDownLatch(fileNameList.size()); System.out.println(fileNameList.size()); for (String fileName:fileNameList) {//除去文件名中与UserIP重复的文件路径String RemoteDir = UserIP.concat(fileName.replace(content, "")); System.out.println("要同步的本地目录或文件: " + fileName); System.out.println("要同步的远端目录或文件: " + RemoteDir); ThreadPool.execute(new RsyncFile("./doRync.sh",fileName, RemoteDir,rsyncLock)); }rsyncLock.await(); System.out.println("执行同步工作完成"); //开始文件校验工作System.out.println("执行文件校验及重传"); //一次计数锁用于保证校验完成CountDownLatch chechSumLock = new CountDownLatch(1); ThreadPool.execute(new RsyncFile("./doChecksum.sh",content,UserIP,chechSumLock)); chechSumLock.await(); System.out.println("文件校验及重传完成"); ThreadPool.shutdown(); Long b = System.nanoTime(); Long aLong = (b - a)/1000000L; System.out.println("处理时间" + aLong + "ms"); System.out.println("结束时间：" + new Date()); }/*** 执行rsync脚本的线程方法，使用PrintWriter来与linux Terminal交互*/@Overridepublic void run() {try {String command=shellname.concat(" ").concat(filename).concat(" ").concat(userip); File wd = new File("/bin"); Process process = null; process = Runtime.getRuntime().exec("/bin/bash", null, wd); if (process != null) {InputStream is = process.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(is)); PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(process.getOutputStream())),true); //切换到当前class文件所在目录out.println("cd " + System.getProperty("user.dir")); out.println(command); out.println("exit"); StringBuilder sb = new StringBuilder(); String line; while ((line = reader.readLine()) != null) {sb.append(line + System.lineSeparator()); }process.waitFor(); reader.close(); out.close(); process.destroy(); System.out.println("result:" + sb.toString()); }else {System.out.println("找不到系统bash工具，请检查系统是否异常，并为系统创建/bin/sh的bash工具软连接"); }} catch (Exception e) {System.err.println(e.getMessage()); }finally {//倒记数锁释放一次countDownLatch.countDown(); }}/**遍历指定的目录并能指定深度* @param file 指定要遍历的目录* @param setDeep 设定遍历深度*/@SneakyThrowsprivate static voidGetAllFile(File file, int setDeep) {if(file != null){if(file.isDirectory() && deep
doDir.sh
rsync -av --include='*/' --exclude='*' $1 $2 |tee -a /tmp/rsync.log 2>&1echo "创建目录结构操作"

doRsync.sh
rsync -avzi --stats --progress $1 $2 |tee -a /tmp/rsync.log 2>&1

doChecksum.sh
rsync -acvzi --stats --progress $1 $2 |tee -a /tmp/checksum.log 2>&1

附录 rsync输出日志说明如下
YXcstpoguaxpath/to/file|||||||||||||||||||||╰- x: The extended attribute information changed|||||||||╰-- a: The ACL information changed||||||||╰--- u: The u slot is reserved for future use|||||||╰---- g: Group is different||||||╰----- o: Owner is different|||||╰------ p: Permission are different||||╰------- t: Modification time is different|||╰-------- s: Size is different||╰--------- c: Different checksum (for regular files), or||changed value (for symlinks, devices, and special files)|╰---------- the file type:|f: for a file,|d: for a directory,|L: for a symlink,|D: for a device,|S: for a special file (e.g. named sockets and fifos)╰----------- the type of update being done::<: file is being transferred to the remote host (sent)>: file is being transferred to the local host (received)c: local change/creation for the item, such as:- the creation of a directory- the changing of a symlink,- etc.h: the item is a hard link to another item (requires --hard-links)..: the item is not being updated (though it might haveattributes that are being modified)*: means that the rest of the itemized-output area containsa message (e.g. "deleting")


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