Azure Web作业在超时后无法执行

问题描述

我的一些连续运行的Web作业功能(随机)显示消息超时值00:30:00被功能'< myfunction>'超出(Id:< id>").开始取消.

此消息后，除非手动停止并启动Azure Web作业，否则此功能将不会自行执行.

谢谢.

解决方案

根据您的错误，我在

我建议您可以在函数中使用 CancellationToken 参数，并在发生超时或主机关闭时将其取消，并且可以按以下方式正常退出函数:

some of my continuous running web job function(random) show message of Timeout value of 00:30:00 exceeded by function '<myfunction>' (Id: '<id>'). Initiating cancellation.

after this message this function will not execute itself until and unless manually stop and start the azure web job.

Thanks in advance.

解决方案

Based on your error, I found the related code from Microsoft.Azure.WebJobs.Host under FunctionExecutor.cs as follows:

internal static void OnFunctionTimeout(System.Timers.Timer timer, FunctionDescriptor method, Guid instanceId, TimeSpan timeout, bool timeoutWhileDebugging,
    TraceWriter trace, ILogger logger, CancellationTokenSource cancellationTokenSource, Func<bool> isDebuggerAttached)
{
    timer.Stop();

    bool shouldTimeout = timeoutWhileDebugging || !isDebuggerAttached();
    string message = string.Format(CultureInfo.InvariantCulture,
        "Timeout value of {0} exceeded by function '{1}' (Id: '{2}'). {3}",
        timeout.ToString(), method.ShortName, instanceId,
        shouldTimeout ? "Initiating cancellation." : "Function will not be cancelled while debugging.");

    trace.Error(message, null, TraceSource.Execution);
    logger?.LogError(message);

    trace.Flush();

    // Only cancel the token if not debugging
    if (shouldTimeout)
    {
        // only cancel the token AFTER we've logged our error, since
        // the Dashboard function output is also tied to this cancellation
        // token and we don't want to dispose the logger prematurely.
        cancellationTokenSource.Cancel();
    }
}

I assumed that you specified the TimeoutAttribute for your function as follows:

I would recommend you could use a CancellationToken parameter in your function and it would be canceled whenever a timeout occurs or host shutdown, and you could exit your function gracefully as follows:

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