Question

我是Azure Webjobs的新手。我试图实现GraceFul Shutdown。使用WebJobsShutdownWatcher类时。

Public static void Main()
{
    try
    {
        var config = new JobHostConfiguration();

        if (config.IsDevelopment)
        {
            config.UseDevelopmentSettings();
        }

        var watcher = new WebJobsShutdownWatcher();
        Task.Run(() =>
        {
            bool isCancelled = false;
            while (!isCancelled)
           {
               if (watcher.Token.IsCancellationRequested)
               {
                   Console.WriteLine("WebJob cancellation Token Requested!");
                   isCancelled = true;
                }
            }
        }, watcher.Token).Wait();

        var host = new JobHost();
         The following code ensures that the WebJob will be running continuously
        host.RunAndBlock();
    }
    catch (Exception)
    {
        Console.WriteLine("Error");
    }
}

要实现GraceFul ShutDown，我已经停止了Webjob并再次托管在azure上。在Azure上托管后，队列没有获得触发器。当我调试代码时，控件在WebJobsShutdownWatcher类停止。我做错了什么？

Answer 1

正如托马斯所说，你的代码有问题。

由于WebJobsShutdownWatcher类将继续监视webjobs状态，并且您使用wait方法等待WebJobsShutdownWatcher类获取取消令牌，因此永远不会命中host.RunAndBlock方法。

您可以删除等待方法，代码也能正常运行。

在这里，我编写了一个测试演示，它运行良好。

    static void Main()
    {
        var config = new JobHostConfiguration();

        if (config.IsDevelopment)
        {
            config.UseDevelopmentSettings();
        }

        var watcher = new WebJobsShutdownWatcher();



        Task.Run(() =>
        {
            bool isCancelled = false;
            while (!isCancelled)
            {
                if (watcher.Token.IsCancellationRequested)
                {
                    Console.WriteLine("WebJob cancellation Token Requested!");
                    isCancelled = true;
                }
            }
        }, watcher.Token);


        var host = new JobHost(config);
        // The following code ensures that the WebJob will be running continuously
        host.RunAndBlock();
    }

C＃中Azure Webjob中的GraceFul ShutDown

1 个答案: