private void mainForm_Load(object sender, EventArgs e)
{
//获取本机IP
_localHost = Init.GetLocalIP();
//启动计算主备机进程
Thread mainOrStandByThread = new Thread(new ThreadStart(mainOrStandBySwitchMethod));
mainOrStandByThread.IsBackground = true;
mainOrStandByThread.Start();
//启动接收网络UDP消息线程
Thread UdpThread = new Thread(new ThreadStart(UDP.UdpReceive));
UdpThread.IsBackground = true;
UdpThread.Start();
//探查网络是否正常
if (Init.PingAll(_tcpInitStandByServerHost))
{
//等待8S钟,接收当前系统的主备机状态
Thread.Sleep(IntervalTime * IntervalDis * 1000);
//当前系统是否存在主机的情况
_priority = Init.Priority(_priorityInit);
//网络正常
//启动发送心跳
heartOfTimer.Interval = IntervalTime * 1000;
heartOfTimer.Enabled = true;
heartOfTimer.Start();
}
else
{
//发出告警
}
}
/// <summary>
/// 计算主备机切换
/// </summary>
private void mainOrStandBySwitchMethod()
{
while (true)
{
try
{
if (Init.PingAll(_tcpInitStandByServerHost))
{
//显示正常状态
}
else
{
//显示异常状态
//告警，标红灯
listBox1.Items.Add(DateTime.Now.ToString() + "--告警--备机无法连通，请检查网络和备机");
}
//计算上次接收到主备机到现在的时间长度
double lastTimeStandby = (DateTime.Now - _timeStandByLast).TotalSeconds;
if (lastTimeStandby > IntervalTime * IntervalDis)
{
lock (_lockSwitch)
{
//加锁
//说明丢失了周期超过阈值
if (_priority == StructNode.Priority.main)
{
//说明本机是主机，对面是备机
//告警，备机掉机
_tcpNowStandByServerHost = "";
listBox1.Items.Add(DateTime.Now.ToString() + "--告警--网络异常--无法检测到备机心跳，备机掉机");
}
else
{
//告警，主机掉机，并发布切换消息
listBox1.Items.Add(DateTime.Now.ToString() + "--告警--主机掉机--备机切换到主机模式");
_priority = StructNode.Priority.main;
_switchPriorityTime = DateTime.Now;
//设置主备机状态
//将自己设置成主机
//1是设置主机消息
string sendInfo = "0x02#Info_Switch_MainOrStandBy#1#" + _localHost + "#" + StructNode.Priority.main.ToString() +
"#" + DateTime.Now.ToString();
//发送
byte[] bytes = Encoding.Default.GetBytes(sendInfo);
mainForm.thisForm.udpcSend.Send(bytes, bytes.Length, mainForm.thisForm.endpoint_Send);
listBox1.Items.Add(DateTime.Now.ToString() + "--发送--切换主备--" + sendInfo);
}
}
}
}
catch (Exception ex)
{
}
Thread.Sleep(1000);
}
}
