我正在尝试在这篇帖子上实现一些重试逻辑基础(但是有任务) Cleanest way to write retry logic?
重试逻辑的想法是实施第二个任务,在给定时间后触发取消
void Main()
{
RetryAction(() => Sleep(), 500);
}
public static void RetryAction(Action action, int timeout)
{
var cancelSource = new CancellationTokenSource();
cancelSource.CancelAfter(timeout);
Task.Run(() => action(), cancelSource.Token);
}
public static void Sleep()
{
System.Threading.Thread.Sleep(5000);
"done".Dump();
}
以上是linqPad片段(因此是“完成”.Dump())
任何想法为什么CancelAfter永远不会起作用?
答案 0 :(得分:3)
您的Sleep方法忽略了CancellationToken。
尝试类似
的内容public static CancellationTokenSource cancelSource ;
void Main()
{
RetryAction(() => Sleep(), 500);
}
public static void RetryAction(Action action, int timeout)
{
cancelSource = new CancellationTokenSource();
cancelSource.CancelAfter(timeout);
Task.Run(() => action(), cancelSource.Token);
}
public static void Sleep()
{
for(int i = 0 ; i< 50; i++)
{
"Waiting".Dump();
System.Threading.Thread.Sleep(100);
if (cancelSource.IsCancellationRequested)
{
"Cancelled".Dump();
return;
}
}
"done".Dump();
}