c# - Quartz.net 取消 token

Question

在我的调度程序中，使用quartz.net v3 实现，我正在尝试测试取消 token 的行为:

....
IScheduler scheduler = await factory.GetScheduler();
....
var tokenSource = new CancellationTokenSource();
CancellationToken ct = tokenSource.Token;
// Start scheduler
await scheduler.Start(ct);
// some sleep 
await Task.Delay(TimeSpan.FromSeconds(60));
// communicate cancellation
tokenSource.Cancel();

我有一个无限运行的测试作业，并在 Execute 方法中检查取消 token :

public async Task Execute(IJobExecutionContext context)
{
    while (true)
    {
        if (context.CancellationToken.IsCancellationRequested)
        {
            context.CancellationToken.ThrowIfCancellationRequested();
        }
    }
}

我希望当 tokenSource.Cancel() 被触发时，作业将进入 if 并抛出异常。但它不起作用。

Answer 1

根据documentation ，您应该使用Interrupt方法来取消Quartz作业。

NameValueCollection props = new NameValueCollection
{
    { "quartz.serializer.type", "binary" }
};
StdSchedulerFactory factory = new StdSchedulerFactory(props);
var scheduler = await factory.GetScheduler();
await scheduler.Start();
IJobDetail job = JobBuilder.Create<HelloJob>()
    .WithIdentity("myJob", "group1")
    .Build();
ITrigger trigger = TriggerBuilder.Create()
    .WithIdentity("myTrigger", "group1")
    .StartNow()
    .WithSimpleSchedule(x => x
        .WithRepeatCount(1)
        .WithIntervalInSeconds(40))
    .Build();
await scheduler.ScheduleJob(job, trigger);
//Configure the cancellation of the schedule job with jobkey
await Task.Delay(TimeSpan.FromSeconds(1));
await scheduler.Interrupt(job.Key);

预定的工作类别；

public class HelloJob : IJob
{
    public async Task Execute(IJobExecutionContext context)
    {
        while (true)
        {
            if (context.CancellationToken.IsCancellationRequested)
            {
                context.CancellationToken.ThrowIfCancellationRequested(); 
                // After interrupt the job, the cancellation request activated
            }
        }
    }
}

在作业执行后应用scheduler.Interrupt，quartz将终止作业。

编辑

根据source code (第 2151 行)，Interrupt 方法应用作业执行上下文的取消标记。所以，最好利用图书馆的设施。