摘要
很多情况下，都会使用windows服务做一些任务，但总会有一些异常，导致服务停止。这个时候，开发人员又不能立马解决问题，所以做一个守护者服务还是很有必要的。当检测到服务停止了，重启一下服务，等开发人员到位了，再排查错误日志。
代码
app.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<appSettings>
<!--要守护的服务的服务名称-->
<add key="toWatchServiceName" value=""/>
<!--守护服务的名称-->
<add key="serviceName" value="邮件提醒服务守护服务"/>
<!--每1分钟检查一次 以秒为单位-->
<add key="timerInterval" value=""/>
</appSettings>
</configuration>
服务
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks; namespace WindowsService.Watch
{
partial class ServiceWather : ServiceBase
{
private static string currentExePath = string.Empty;
public ServiceWather()
{
InitializeComponent();
currentExePath = AppDomain.CurrentDomain.BaseDirectory;
}
/// <summary>
/// 检查间隔
/// </summary>
private static readonly int _timerInterval = Convert.ToInt32(ConfigurationManager.AppSettings["timerInterval"]) * ;
/// <summary>
/// 要守护的服务名
/// </summary>
private static readonly string toWatchServiceName = ConfigurationManager.AppSettings["toWatchServiceName"];
private System.Timers.Timer _timer;
protected override void OnStart(string[] args)
{
//服务启动时开启定时器
_timer = new System.Timers.Timer();
_timer.Interval = _timerInterval;
_timer.Enabled = true;
_timer.AutoReset = true;
_timer.Elapsed += _timer_Elapsed;
LogHelper.WriteLog(currentExePath, "守护服务开启");
} void _timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
//如果服务状态为停止，则重新启动服务
if (!CheckSericeStart(toWatchServiceName))
{
StartService(toWatchServiceName);
}
} protected override void OnStop()
{
if (_timer != null)
{
_timer.Stop();
_timer.Dispose();
LogHelper.WriteLog(currentExePath, "守护服务停止");
}
}
/// <summary>
/// 启动服务
/// </summary>
/// <param name="serviceName">要启动的服务名称</param>
private void StartService(string serviceName)
{
try
{
ServiceController[] services = ServiceController.GetServices();
foreach (ServiceController service in services)
{
if (service.ServiceName.Trim() == serviceName.Trim())
{
service.Start();
//直到服务启动
service.WaitForStatus(ServiceControllerStatus.Running, new TimeSpan(, , ));
LogHelper.WriteLog(currentExePath, string.Format("启动服务:{0}", serviceName));
}
}
}
catch (Exception ex)
{
LogHelper.WriteLog(currentExePath, ex);
}
}
private bool CheckSericeStart(string serviceName)
{
bool result = true;
try
{
ServiceController[] services = ServiceController.GetServices();
foreach (ServiceController service in services)
{
if (service.ServiceName.Trim() == serviceName.Trim())
{
if ((service.Status == ServiceControllerStatus.Stopped)
|| (service.Status == ServiceControllerStatus.StopPending))
{
result = false;
}
}
}
}
catch (Exception ex)
{
LogHelper.WriteLog(currentExePath, ex);
}
return result;
}
/// <summary>
/// 停止
/// </summary>
/// <param name="serviceName"></param>
private void StopService(string serviceName)
{
try
{
ServiceController[] services = ServiceController.GetServices();
foreach (ServiceController service in services)
{
if (service.ServiceName.Trim() == serviceName.Trim())
{
service.Stop();
//直到服务停止
service.WaitForStatus(ServiceControllerStatus.Stopped, new TimeSpan(, , ));
LogHelper.WriteLog(currentExePath, string.Format("启动服务:{0}", serviceName));
}
}
}
catch (Exception ex)
{
LogHelper.WriteLog(currentExePath, ex);
}
}
}
}