94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
using GeekDesk.Constant;
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using GeekDesk.ViewModel;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace GeekDesk.Task
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{
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internal class BakTask
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{
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public static void Start()
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{
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System.Timers.Timer timer = new System.Timers.Timer
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{
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Enabled = true,
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Interval = 60 * 1000 * 60 * 2, //60秒 * 60 * 2 2小时触发一次
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//Interval = 6000,
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};
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timer.Start();
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timer.Elapsed += Timer_Elapsed;
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}
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private static void Timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
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{
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DirectoryInfo dirInfo = new DirectoryInfo(Constants.DATA_FILE_BAK_DIR_PATH);
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string todayBakName = DateTime.Now.ToString("yyyy-MM-dd") + ".bak";
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string bakDaysStr = ConfigurationManager.AppSettings["BakDays"];
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int bakDays = 7;
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if (bakDaysStr != null && !"".Equals(bakDaysStr.Trim()))
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{
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bakDays = Int32.Parse(bakDaysStr.Trim());
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}
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string bakFilePath = Constants.DATA_FILE_BAK_DIR_PATH + "\\" + todayBakName;
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if (dirInfo.Exists)
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{
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// 获取文件信息并按创建时间倒序排序
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FileInfo[] files = dirInfo.GetFiles()
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.Where(f => f.Extension.Equals(".bak", StringComparison.OrdinalIgnoreCase)).ToArray();
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if (files.Length > 0)
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{
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FileInfo[] sortedFiles = files.OrderByDescending(file => file.CreationTime).ToArray();
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if (!sortedFiles[0].Name.Equals(todayBakName))
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{
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//今天未创建备份 开始创建今天的备份
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createBakFile(bakFilePath);
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}
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//判断文件是否超过了7个 超过7个就删除
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if (sortedFiles.Length > bakDays)
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{
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for (int i = bakDays; i < sortedFiles.Length; i++)
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{
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sortedFiles[i].Delete();
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}
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}
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} else
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{
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//没有文件 直接创建今天的备份
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createBakFile(bakFilePath);
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}
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}
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else
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{
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dirInfo.Create();
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}
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}
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//创建备份文件
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private static void createBakFile(string filePath)
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{
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using (FileStream fs = new FileStream(filePath, FileMode.Create))
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{
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BinaryFormatter bf = new BinaryFormatter();
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bf.Serialize(fs, MainWindow.appData);
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}
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}
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}
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}
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