private async ValueTask Consume(ICollection <ProcItem <T> > items)
{
try
{
if (items.IsNullOrEmpty())
{
return;
}
var list = items.Select(m => m.Item).ToArray();
await OnConsume.InvokeAsync(this, list).DonotCapture();
return;
}
catch (Exception ex)
{
var list = items.CastTo <IReadOnlyList <ProcItem <T> > >();
OnException.Invoke(this, ProcItem.CreateEx(list, ex, -1));
}
var(retry, discard) = items.Partition(m => m.ErrorTimes < _maxRetryTimes);
retry.ForEach(m =>
{
m.ErrorTimes++;
_items.TryAdd(m);
});
var toDiscard = discard.Select(m => m.Item).ToArray();
if (toDiscard.Any())
{
OnDiscard.Invoke(this, toDiscard);
}
}
public AutoRetryConsumer(int maxRetryTimes, Func <int, int> retryDelay)
{
if (maxRetryTimes < 0)
{
throw new ArgumentOutOfRangeException(nameof(maxRetryTimes));
}
_maxRetryTimes = maxRetryTimes;
_retryDelay = retryDelay ?? (x => x);
OnConsumeInternal += async(sender, item) =>
{
var delay = _retryDelay(item.ErrorTimes);
await TaskHelper.Delay(delay);
await OnConsume(sender, item.Item).DonotCapture();
};
OnExceptionInternal += (sender, args) =>
{
var item = args.Item;
OnException.Invoke(sender, ProcItem.CreateEx(item.Item, args.Exception, args.ErrorTimes));
// 以下是失败后的补救措施
if (item.ErrorTimes++ < _maxRetryTimes)
{
_items.TryAdd(item);
}
else
{
OnDiscard.Invoke(sender, item.Item);
}
return(Task.CompletedTask);
};
}
protected void InvokeOnDiscard(Player player, Tile tile)
{
OnDiscard?.Invoke(player, tile);
}