.net - Quartz.Net 中长时间运行的作业

Question

我在 Quartz.Net 中有一份工作经常触发，有时会运行很长时间，如果工作已经在运行，我该如何取消触发器？

Answer 1

更标准的方法是使用 IInterruptableJob，参见http://quartznet.sourceforge.net/faq.html#howtostopjob。当然，这只是另一种说法 if (!jobRunning)...

Answer 2

您能否在作业开始时设置某种全局变量 (jobRunning=true) 并在作业完成后将其恢复为 false？

然后当触发器触发时，只需运行您的代码 if(jobRunning==false)

Answer 3

您的应用程序可以在启动时将自己从作业列表中删除，并在关机时插入自己。

Answer 4

现在，您可以在触发器中使用“WithMisfireHandlingInstructionIgnoreMisfires”，并在工作中使用 [DisallowConcurrentExecution] 属性。

Answer 5

这是我的实现（使用 MarkoL 之前给出的链接中的建议）。

我只是想节省一些打字。

我是 Quartz.NET 的新手，所以请带上一列盐。

public class AnInterruptableJob : IJob, IInterruptableJob
{

    private bool _isInterrupted = false;

    private int MAXIMUM_JOB_RUN_SECONDS = 10;

    /// <summary> 
    /// Called by the <see cref="IScheduler" /> when a
    /// <see cref="ITrigger" /> fires that is associated with
    /// the <see cref="IJob" />.
    /// </summary>
    public virtual void Execute(IJobExecutionContext context)
    {


        /* See http://aziegler71.wordpress.com/2012/04/25/quartz-net-example/ */

        JobKey key = context.JobDetail.Key;

        JobDataMap dataMap = context.JobDetail.JobDataMap;

        int timeOutSeconds = dataMap.GetInt("TimeOutSeconds");
        if (timeOutSeconds <= 0)
        {
            timeOutSeconds = MAXIMUM_JOB_RUN_SECONDS;
        }

        Timer t = new Timer(TimerCallback, context, timeOutSeconds * 1000, 0);


        Console.WriteLine(string.Format("AnInterruptableJob Start : JobKey='{0}', timeOutSeconds='{1}' at '{2}'", key, timeOutSeconds, DateTime.Now.ToLongTimeString()));


        try
        {
            Thread.Sleep(TimeSpan.FromSeconds(7));
        }
        catch (ThreadInterruptedException)
        {
        }


        if (_isInterrupted)
        {
            Console.WriteLine("Interrupted.  Leaving Excecute Method.");
            return;
        }

        Console.WriteLine(string.Format("End AnInterruptableJob (should not see this) : JobKey='{0}', timeOutSeconds='{1}' at '{2}'", key, timeOutSeconds, DateTime.Now.ToLongTimeString()));

    }


    private void TimerCallback(Object o)
    {
        IJobExecutionContext context = o as IJobExecutionContext;

        if (null != context)
        {
            context.Scheduler.Interrupt(context.FireInstanceId);
        }
    }

    public void Interrupt()
    {
        _isInterrupted = true;
        Console.WriteLine(string.Format("AnInterruptableJob.Interrupt called at '{0}'", DateTime.Now.ToLongTimeString()));
    }
}