/// <summary>
/// Opens a <see cref="LogReader"/> that reads unicast entries only from this monitor and positions it on the first entry
/// with the given time (i.e. <see cref="LogReader.MoveNext"/> has been called).
/// </summary>
/// <param name="logTime">Log time. Must exist in the stream otherwise an exception is thrown.</param>
/// <returns>A log reader that will read only entries from this monitor.</returns>
public LogReader CreateFilteredReaderAndMoveTo(DateTimeStamp logTime)
{
var r = LogReader.Open(LogFile.FileName, FirstOffset, new LogReader.MulticastFilter(MonitorId, LastOffset));
while (r.MoveNext() && r.Current.LogTime < logTime)
{
;
}
return(r);
}
/// <summary>
/// Opens a <see cref="LogReader"/> that reads unicast entries only from this monitor and positions it on the first entry
/// with the given time (i.e. <see cref="LogReader.MoveNext"/> has been called).
/// </summary>
/// <param name="logTime">Log time. Must exist in the stream otherwise an exception is thrown.</param>
/// <returns>A log reader that will read only entries from this monitor.</returns>
public LogReader CreateFilteredReaderAndMoveTo(DateTimeStamp logTime)
{
var r = LogReader.Open(LogFile.FileName, FirstOffset, new LogReader.MulticastFilter(MonitorId, LastOffset));
while (r.MoveNext() && r.Current.LogTime < logTime)
{
;
}
if (r.ReadException != null || r.BadEndOfFileMarker)
{
r.Dispose();
Throw.InvalidDataException($"Unable to read '{LogFile.FileName}' for monitor '{MonitorId}' from offset {LastOffset}.", r.ReadException);
}
return(r);
}
/// <summary>
/// Creates and opens a <see cref="LogReader"/> that reads unicast entries only from this monitor.
/// The reader is positioned on the entry (i.e. <see cref="LogReader.MoveNext"/> has been called).
/// </summary>
/// <param name="streamOffset">Initial stream position.</param>
/// <returns>A log reader that will read only entries from this monitor.</returns>
public LogReader CreateFilteredReaderAndMoveTo(long streamOffset)
{
if (streamOffset == -1)
{
streamOffset = FirstOffset;
}
var r = LogReader.Open(LogFile.FileName, streamOffset, new LogReader.MulticastFilter(MonitorId, LastOffset));
if (!r.MoveNext())
{
r.Dispose();
Throw.InvalidDataException($"Unable to read '{LogFile.FileName}' for monitor '{MonitorId}' from offset {streamOffset}.", r.ReadException);
}
return(r);
}
internal void Initialize(MultiLogReader reader)
{
try
{
var monitorOccurrences = new Dictionary <Guid, RawLogFileMonitorOccurence>();
var monitorOccurrenceList = new List <RawLogFileMonitorOccurence>();
using (var r = LogReader.Open(_fileName))
{
if (r.MoveNext())
{
_fileVersion = r.StreamVersion;
do
{
var log = r.Current as IMulticastLogEntry;
if (log != null)
{
++_totalEntryCount;
if (_firstEntryTime > log.LogTime)
{
_firstEntryTime = log.LogTime;
}
if (_lastEntryTime < log.LogTime)
{
_lastEntryTime = log.LogTime;
}
UpdateMonitor(reader, r.StreamOffset, monitorOccurrences, monitorOccurrenceList, log);
}
}while(r.MoveNext());
}
_badEndOfFile = r.BadEndOfFileMarker;
_error = r.ReadException;
}
_monitors = monitorOccurrenceList.ToArray();
}
catch (Exception ex)
{
_error = ex;
}
}
/// <summary>
/// Creates and opens a <see cref="LogReader"/> that reads unicast entries only from this monitor.
/// The reader is initially positioned before the entry (i.e. <see cref="LogReader.MoveNext"/> must be called).
/// </summary>
/// <param name="streamOffset">Initial stream position.</param>
/// <returns>A log reader that will read only entries from this monitor.</returns>
public LogReader CreateFilteredReader(long streamOffset)
{
return(LogReader.Open(LogFile.FileName, streamOffset != -1 ? streamOffset : FirstOffset, new LogReader.MulticastFilter(MonitorId, LastOffset)));
}
