public void ExecuteOne(ILogDataAccessor <TIndex, TData> accessor)
{
if (accessor == null)
{
throw new ArgumentNullException(nameof(accessor));
}
TaskData data;
if (TryDequeue(out data))
{
// DO NOT PLACE ANY CODE BETWEEN TryDequeue and Execute, EVER
Execute(data, accessor);
}
}
private void Execute(TaskData data, ILogDataAccessor <TIndex, TData> accessor)
{
try
{
TData value;
if (accessor.TryAccess(data.Index, out value))
{
data.Finished(value);
}
else
{
// If this region of data can no longer be accessed,
// then we cancel the request.
data.Cancel();
}
}
catch (Exception e)
{
Log.ErrorFormat("Caught unexpected exception");
data.Failed(e);
}
}
