public UpdateCacheCommandHandler(
IAsyncLogProvider owner,
LJTraceSource tracer,
MessagesContainers.RangesManagingCollection buffer,
Settings.IGlobalSettingsAccessor settingsAccessor
)
{
this.owner = owner;
this.buffer = buffer;
this.tracer = tracer;
this.settingsAccessor = settingsAccessor;
}
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);
});
}