在Azure功能上检测超时以将消息重新路由到应用服务计划

问题描述

我有一个Azure功能，可以将消费计划中的档案解压缩.其中一些碰巧需要超过10分钟的时间才能解压缩，并且可能会超时.我正在考虑制定一个单独的应用程序服务计划，在执行消费计划时，我将在其中重新路由提取.

I've got an Azure function unziping archives on a consumption plan. Some of them happens to take more than 10min to unzip and can timeout. I'm thinking of having a separate app service plan where I would reroute the extraction when timing out on consumption plan.

您将如何做?该功能中的计时器?捕获超时异常?您有更好的建议吗?

How would you do that? a timer in the function? a catch timeout exception? Do you have a better suggestion?

谢谢

推荐答案

对于那些感兴趣的人，我结束了将自己的超时(比Azure提前几秒)添加到提取函数中，然后重新路由到服务应用程序计划处理的另一个队列比不超时.

For those interested I ended adding my own timeout (few seconds earlier than Azure one) to the extract function, then rerouting to another queue handled by a service app plan than don't timeout.

代码:

using (var timeoutCts = new CancellationTokenSource())
{
    try
    {
        // task completed within timeout
        timeoutCts.CancelAfter(590000);
        var counter = await ExtractArchiveAsync(archiveFullName, myBlob, timeoutCts.Token);
        log.Info($"Extracted : { counter.GetCurrentCount() }");
    }
    catch (OperationCanceledException)
    {
        // timeout logic
        log.Info($"Function timedout, redirected to long queue");
        var queue = StorageService.GetCloudQueueReference("ArchiveToExtractQueueTimedOut");
        await queue.AddMessageAsync(new CloudQueueMessage(archiveFullName));
    }
}

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