using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using HuizhongLibrary.Data;
using HuizhongLibrary.Log;

namespace HuizhongLibrary
{
    public class DatabaseConnect
    {
        private AutoResetEvent AutoReset = new AutoResetEvent(false);
        bool IsRun = false;

        public event Action ConnectComplete;

        #region 启动检测
        public void Start()
        {
            Thread t = new Thread(this.ThreadWhile);
            t.Start();
        }
        #endregion
        #region 停止检测
        public void Stop()
        {
            IsRun = false;
            AutoReset.Set();
        }
        #endregion

        #region 测试连接
        void ThreadWhile()
        {
            IsRun = true;
            while (IsRun)
            {
                Database db = DatabaseFactory.CreateDatabase();
                bool bk=db.TestConnection();
                if (bk == true)
                {
                    IsRun = false;
                    if (this.ConnectComplete != null) this.ConnectComplete();
                    return;
                }
                ErrorFollow.TraceWrite("数据库连接失败","暂停30秒后再试", db.ConnectionString);
                AutoReset.WaitOne(30000);
            }
        }
        #endregion


    }
}