如果作业异常失败，请在15分钟后重新启动quartz.net触发器 [英] Refire quartz.net trigger after 15 minutes if job fails with exception

问题描述

如果作业抛出异常，我已经搜索了有关在一定的时间后如何重新触发作业的答案。我看不到任何简单的方法。

I have searched for an answer on how to retrigger a job after a ceratin amount of time, if the job throws an exception. I cannot see any simple way of doing this.

如果我这样设置触发器：

if I set my trigger up like this:

JobDetail job = new JobDetail("Download catalog", null, typeof(MyJob));
job .Durable = true;
Trigger trigger= TriggerUtils.MakeDailyTrigger(12, 0);
trigger.StartTimeUtc = DateTime.UtcNow;
trigger.Name = "trigger name";
scheduler.ScheduleJob(job , trigger);

MyJob看起来像这样：

And MyJob look like this:

public class MyJob : IJob
{
    public void Execute(JobExecutionContext context)
    {
        var service = new service();


        try
        {
            service.Download();
        }
        catch (Exception)
        {
            throw;
        }

    }
}

怎么办如果service.Download（）调用引发某种异常，我会在15分钟后触发触发器，然后重新触发。

how do I make the trigger to refire/retrigger after there is gone 15 minutes if the service.Download() call throws some sort of Exception?

推荐答案

我认为您唯一的选择是捕获错误并告诉Quartz.net立即重新发射：

I think the only option you have is to trap the error and tell Quartz.net to refire immediately:

public class MyJob : IJob
{
    public void Execute(JobExecutionContext context)
    {
        var service = new service();

        try
        {
            service.Download();
        }
        catch (Exception ex)
        {
              JobExecutionException qe = new JobExecutionException(ex);
              qe.RefireImmediately = true;  // this job will refire immediately
              throw qe;  
        }
    }
}

您可以找到一些信息< a href = http://quartznet.sourceforge.net/apidoc/1.0/html/topic415.html rel = noreferrer>此处和此处。

You can find some info here and here.

更新：

我做了一些测试，看来您可以在正在执行的作业中安排新的触发器。

您可以尝试执行以下操作：

I did some tests and it seems that you can schedule a new trigger inside an executing job.
You can try something like this:

public class MyJob : IJob
{
    public void Execute(JobExecutionContext context)
    {
        var service = new service();

        try
        {
            service.Download();
        }
        catch (Exception ex)
        {
            JobExecutionException qe = new JobExecutionException(ex);
            // qe.RefireImmediately = true;  // this job will refire immediately
            // throw qe;  
            OnErrorScheduleJob(context);

        }
    }

    private void OnErrorScheduleJob(JobExecutionContext context)
    {
        var jobOnError = context.Scheduler.GetJobDetail("ONERRORJOB", "ERROR");
        if (jobOnError == null)
        {
        JobDetail job = new JobDetail("ONERRORJOB", "ERROR", typeof(MyJob));
        job.Durable = false;
        job.Volatile = false;
        job.RequestsRecovery = false;

        SimpleTrigger trigger = new SimpleTrigger("ONERRORTRIGGER",
                        "ERROR",
                        DateTime.UtcNow.AddMinutes(15),
                        null,
                        1,
                        TimeSpan.FromMinutes(100));

        context.Scheduler.ScheduleJob(job, trigger);     
        }
    }
}

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