Question

所以我有一个基本的运行Windows服务，需要将所有数据从一个MySQL连接复制到另一个，分解为：

MySQL连接A有5个模式，每个模式都有几个表。

我需要将所有5个Schema以及这些模式中的所有表从MySQL Connection A复制到MySQL Connection B.

第一次运行时需要自动重新创建模式和布局以将数据放入MYSQL Connection B.一旦完成，它必须每天凌晨3点运行到凌晨5点不断覆盖连接B哪里有变化在连接A中。

我已经掌握了服务运行的基础知识，但它实际上根本没有访问数据库！

代码如下所示：

public partial class BackupService : ServiceBase
{
    private Timer timer1 = null;
    bool backUpRunning = false;

    public BackupService()
    {
        InitializeComponent();
    }

    protected override void OnStart(string[] args)
    {

        timer1 = new Timer();
        this.timer1.Interval = 3600000;
        this.timer1.Elapsed += new System.Timers.ElapsedEventHandler(this.timer1_Tick);
        timer1.Enabled = true;
        timer1.Start();
        LogLibrary.WriteErrorLog("Backup window service started");

    }
    private void timer1_Tick(object sender, ElapsedEventArgs e)
    {
        System.Diagnostics.Debugger.Launch();

        TimeSpan now = DateTime.Now.TimeOfDay;
        TimeSpan start = new TimeSpan(12, 0, 0);
        TimeSpan end = new TimeSpan(14, 0, 0);


        LogLibrary.WriteErrorLog("Checking if it's time to run the backup service and checking if the service is already running");

        if (backUpRunning)
            LogLibrary.WriteErrorLog("Service is already running");

        if ((now > start) && (now < end) && !backUpRunning)
        {
            LogLibrary.WriteErrorLog("Service is not already running and the time of day is valid to run the service.");
            try
            {
                backUpRunning = true;
                LogLibrary.WriteErrorLog("Initialising backup service");

            }
            catch (Exception ex)
            {
                LogLibrary.WriteErrorLog("The backup service failed. It will return to step 1 and try again: " + ex.Message);
            }
            finally
            {
                backUpRunning = false;
            }
        }
        LogLibrary.WriteErrorLog("Timer ticked and job has been done successfully");
    }

    protected override void OnStop()
    {
        timer1.Enabled = false;
        timer1.Stop();
        LogLibrary.WriteErrorLog("Service stopped");
    }
 private void Backup()
    {
        System.Diagnostics.Debugger.Launch();

        string constring = "server=; user=root; pwd=; database=testing;";
        string file = "C:\\backup.sql";

        using (MySqlConnection conn = new MySqlConnection(constring))
        {
            using (MySqlCommand cmd = new MySqlCommand("SELECT * FROM testing"))
            {
                using (MySqlBackup mb = new MySqlBackup(cmd))
                {
                    cmd.Connection = conn;
                    conn.Open();

                    //mb.ExportInfo.AddCreateDatabase = true;
                    //mb.ExportInfo.ExportTableStructure = true;
                    //mb.ExportInfo.ExportRows = true;
                    mb.ExportToFile(file);

                    conn.Close();

                }
            }
        }
    }

    //IMPORT DATABASES to Gunther
    private void Restore()
    {
        string constring = "server=; user=root; pwd=; database=testingbackup;";
        string file = "C:\\backup.sql";


        using (MySqlConnection conn = new MySqlConnection(constring))
        {
            using (MySqlCommand cmd = new MySqlCommand("INSERT  ALL INTO testingbackup"))
            {
                using (MySqlBackup mb = new MySqlBackup(cmd))
                {
                    cmd.Connection = conn;
                    conn.Open();

                    //mb.ImportInfo.TargetDatabase = "testingbackup";
                    //mb.ImportInfo.DatabaseDefaultCharSet = "utf8";
                    mb.ImportFromFile(file);

                    conn.Close();
                }
            }
        }


    }

服务器详细信息和密码已因商业原因而被删除，但服务器通常会输入连接地址，例如。 00.250.250.250:3306和11.250.250.250:3306

连接mySql数据库的Windows服务

0 个答案: