public override async Task ScanEventLogsAsync()
{
ScanCompleted.Value = false;
BlackoutDates.Clear();
var oldest = DateTime.Today - TimeSpan.FromDays(PreferenceService.Preference.MaxDays);
DateTime?lastDate = oldest - TimeSpan.FromDays(30); // To easy recognission of oldest date
ScannedDate.Value = oldest;
AllPowerLogs.Clear();
long maxTimeDiff = PreferenceService.Preference.MaxDays * 86400000L;
var queryStr = "<QueryList><Query Id=\"0\" Path=\"System\">"
+ "<Select Path =\"System\">"
+ "*[System[Provider[@Name = 'Microsoft-Windows-Kernel-Boot'"
+ " or @Name = 'Microsoft-Windows-Kernel-General'"
+ " or @Name = 'Microsoft-Windows-Kernel-Power'"
+ " or @Name = 'EventLog'] "
+ " and TimeCreated[timediff(@SystemTime) <= " + $"{maxTimeDiff}"
+ "]]] </Select></Query></QueryList>";
var query = new EventLogQuery("System", PathType.LogName, queryStr);
EventLogReader reader = new EventLogReader(query);
EventRecord record = reader.ReadEvent();
while (record != null && !ScanCompleted.Value)
{
PowerLogEntry pwle = ToPowerLogEntry(record);
if (pwle != null)
{
AllPowerLogs.Add(pwle);
if (lastDate != pwle.Timestamp.Date)
{
UpdateBlackoutDateRange(lastDate, pwle.Timestamp.Date);
ScannedDate.Value = lastDate = pwle.Timestamp.Date;
await Task.Yield();
}
}
record = reader.ReadEvent();
}
Logger.Debug("AllPowerLogs.Count = {0}", AllPowerLogs.Count);
if (AllPowerLogs.Count > 0)
{
UpdateBlackoutDateRange(lastDate, DateTime.Today + TimeSpan.FromDays(1));
if (!ScanCompleted.Value) // not aborted
{
ScannedDate.Value = AllPowerLogs[AllPowerLogs.Count - 1].Timestamp.Date;
}
}
else
{
UpdateBlackoutDateRange(lastDate, DateTime.Today + TimeSpan.FromDays(1));
}
BlackoutDateArray = BlackoutDates.ToArray();
ScanCompleted.Value = true;
Logger.Debug("Scan completed");
}
public PowerLogEntry[] GetPowerLogEntries(DateTime date)
{
return(AllPowerLogs.Where(x => x.Timestamp.Date == date.Date).OrderBy(x => x.Timestamp).ToArray());
}
