private static DateRange GetAvailableDateRangeHelper(IMessage first, IMessage last)
{
if (first == null || last == null)
{
return(DateRange.MakeEmpty());
}
try
{
return(DateRange.MakeFromBoundaryValues(first.Time.ToLocalDateTime(), last.Time.ToLocalDateTime()));
}
catch (DateRangeArgumentException e)
{
throw new BadBoundaryDatesException("Bad boundary dates", e);
}
}
void UpdateLoadedTimeStats(IPositionedMessagesReader reader)
{
MessagesContainers.RangesManagingCollection tmp = buffer;
tracer.Info("Current messages: {0}", tmp);
long bytesCount = 0;
foreach (MessagesContainers.MessagesRange lr in tmp.Ranges)
{
bytesCount += reader.PositionRangeToBytes(lr.LoadedRange);
}
DateRange loadedTime;
int c = tmp.Count;
if (c != 0)
{
DateTime begin = new DateTime();
DateTime end = new DateTime();
foreach (IndexedMessage l in tmp.Forward(0, 1))
{
tracer.Info("First message: {0}, {1}", l.Message.Time, l.Message.Text);
begin = l.Message.Time.ToLocalDateTime();
}
foreach (IndexedMessage l in tmp.Reverse(c - 1, c - 2))
{
tracer.Info("Last message: {0}, {1}", l.Message.Time, l.Message.Text);
end = l.Message.Time.ToLocalDateTime();
}
loadedTime = DateRange.MakeFromBoundaryValues(begin, end);
}
else
{
loadedTime = DateRange.MakeEmpty();
}
tracer.Info("Calculated statistics: LoadedTime={0}, BytesLoaded={1}", loadedTime, bytesCount);
owner.StatsTransaction(stats =>
{
stats.LoadedTime = loadedTime;
stats.LoadedBytes = bytesCount;
return(LogProviderStatsFlag.CachedTime | LogProviderStatsFlag.BytesCount);
});
}
void InvalidateMessages()
{
if (IsDisposed)
{
return;
}
messagesCacheBackbuffer.InvalidateMessages();
Interlocked.Exchange(ref cache, null);
dateBoundsCache.Invalidate();
StatsTransaction(stats =>
{
stats.LoadedBytes = 0;
stats.LoadedTime = DateRange.MakeEmpty();
stats.MessagesCount = 0;
stats.FirstMessageWithTimeConstraintViolation = null;
return(LogProviderStatsFlag.CachedTime | LogProviderStatsFlag.BytesCount |
LogProviderStatsFlag.CachedMessagesCount | LogProviderStatsFlag.FirstMessageWithTimeConstraintViolation);
});
}
