如何在IIS中优雅地结束带有ASP.NET Core 2.2作业的Quartz 3.0.x?

我正试图优雅地结束在IIS中运行的石英作业。我的代码如下:

工作

    [DisallowConcurrentExecution]
    public class TestJob : IJob
    {
        private ILoggingService Logger { get; }
        private IApplicationLifetime ApplicationLifetime { get; }

        private static object lockHandle = new object();
        private static bool shouldExit = false;

        public TestJob(ILoggingService loggingService, IApplicationLifetime applicationLifetime)
        {
            Logger = loggingService;
            ApplicationLifetime = applicationLifetime;
        }

        public Task Execute(IJobExecutionContext context)
        {
            //TODO: does not seem work
            //context.CancellationToken.Register(() =>
            //{
            //    lock (lockHandle)
            //    {
            //        shouldExit = true;
            //    }
            //});

            return Task.Run(() =>
            {
                //TODO: check
                ApplicationLifetime.ApplicationStopping.Register(() =>
                {
                    lock (lockHandle)
                    {
                        shouldExit = true;
                    }
                });

                try
                {
                    for (int i = 0; i < 10; i ++)
                    {
                        lock (lockHandle)
                        {
                            if (shouldExit)
                            {
                                Logger.LogDebug($"TestJob detected that application is shutting down - exiting");
                                break;
                            }
                        }

                        Logger.LogDebug($"TestJob ran step {i+1}");
                        Thread.Sleep(3000);
                    }
                }
                catch (Exception exc)
                {
                    Logger.LogError(exc, "An error occurred during execution of scheduled job");
                }
            });
        }
    }

创业公司

protected void StartJobs(IApplicationBuilder app, IApplicationLifetime lifetime)
{
    var scheduler = app.ApplicationServices.GetService<IScheduler>();
    //TODO: use some config
    QuartzServicesUtilities.StartJob<TestJob>(scheduler, TimeSpan.FromSeconds(60));

    lifetime.ApplicationStarted.Register(() => scheduler.Start());
    lifetime.ApplicationStopping.Register(() => scheduler.Shutdown());
}

private static void ConfigureApplicationLifetime(ILoggingService logger, IApplicationLifetime lifetime)
{
    lifetime.ApplicationStopping.Register(() =>
    {
        logger.LogInfo(null, "Application is stopping...");
    });

    lifetime.ApplicationStopped.Register(() =>
    {
        logger.LogInfo(null, "Application stopped");
    });
}

所以,我已经迷上了 ApplicationStopping 能够优雅地关闭石英作业。但是,当即将结束IIS应用程序池时,作业将突然结束:

• 在web.config中更改某些内容以触发应用程序池停止
• 应用程序池配置为在结束前最多允许90秒。也允许重叠
• 测井记录 Application is stopping 立即 Application stopped 从而使工作突然完成

我记得在ASP.NET中使用Quartz 2.x:Quartz的一个类似的实现也可以完成它们的工作,前提是它们在应用程序池关闭期间成功完成了这项工作。

问题: 如何在IIS中优雅地结束带有ASP.NET Core 2.2作业的Quartz 3.0.x?