private void RaiseBeforeReadFileEvent(out bool cancel)
{
BeforeReadFileEventArgs beforeReadFileArgs = new BeforeReadFileEventArgs(CurrentFile);
if (_currentFileEventNumber == 0)
{
RaiseBeforeReadFile(beforeReadFileArgs);
}
cancel = beforeReadFileArgs.Cancel;
}
private void RaiseBeforeReadFileEvent(out bool cancel)
{
BeforeReadFileEventArgs beforeReadFileArgs = new BeforeReadFileEventArgs(_logFilePath);
if (_eventCount < 0)
{
RaiseBeforeReadFile(beforeReadFileArgs);
}
cancel = beforeReadFileArgs.Cancel;
}
protected void RaiseBeforeReadFile(BeforeReadFileEventArgs args)
{
BeforeReadFile?.Invoke(this, args);
}
public override bool Read()
{
try
{
BeforeReadFileEventArgs beforeReadFileArgs = new BeforeReadFileEventArgs(_logFilePath);
if (_eventCount < 0)
{
RaiseBeforeReadFile(beforeReadFileArgs);
}
if (beforeReadFileArgs.Cancel)
{
_currentRow = null;
return(false);
}
#region bufferedRead
if (_lastRowNumberFromBuffer == 0 ||
_lastRowNumberFromBuffer >= _readBufferSize)
{
_readBuffer.Clear();
_lastRowNumberFromBuffer = 0;
using (_connection = new SQLiteConnection(ConnectionString))
{
_connection.Open();
string queryText = String.Format(
"Select\n" +
" el.RowId,\n" +
" el.Date AS Date,\n" +
" el.ConnectId,\n" +
" el.Session,\n" +
" el.TransactionStatus,\n" +
" el.TransactionDate,\n" +
" el.TransactionId,\n" +
" el.UserCode AS UserCode,\n" +
" el.ComputerCode AS ComputerCode,\n" +
" el.appCode AS ApplicationCode,\n" +
" el.eventCode AS EventCode,\n" +
" el.primaryPortCode AS PrimaryPortCode,\n" +
" el.secondaryPortCode AS SecondaryPortCode,\n" +
" el.workServerCode AS WorkServerCode,\n" +
" el.Severity AS SeverityCode,\n" +
" el.Comment AS Comment,\n" +
" el.Data AS Data,\n" +
" el.DataPresentation AS DataPresentation,\n" +
" elm.metadataCode AS MetadataCode\n" +
"From\n" +
" EventLog el\n" +
" left join EventLogMetadata elm on el.RowId = elm.eventLogID\n" +
" left join MetadataCodes mc on elm.metadataCode = mc.code\n" +
"Where RowID > {0}\n" +
"Order By rowID\n" +
"Limit {1}\n", _lastRowId, _readBufferSize);
using (SQLiteCommand cmd = new SQLiteCommand(queryText, _connection))
{
using (SQLiteDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
try
{
_readBuffer.Add(new RowData
{
RowID = reader.GetInt64OrDefault(0),
Period = reader.GetInt64OrDefault(1).ToDateTimeFormat(),
ConnectId = reader.GetInt64OrDefault(2),
Session = reader.GetInt64OrDefault(3),
TransactionStatus = GetTransactionStatus(reader.GetInt64OrDefault(4)),
TransactionDate = reader.GetInt64OrDefault(5).ToNullableDateTimeELFormat(),
TransactionId = reader.GetInt64OrDefault(6),
User = GetUserByCode(reader.GetInt64OrDefault(7)),
Computer = GetComputerByCode(reader.GetInt64OrDefault(8)),
Application = GetApplicationByCode(reader.GetInt64OrDefault(9)),
Event = GetEventByCode(reader.GetInt64OrDefault(10)),
PrimaryPort = GetPrimaryPortByCode(reader.GetInt64OrDefault(11)),
SecondaryPort = GetSecondaryPortByCode(reader.GetInt64OrDefault(12)),
WorkServer = GetWorkServerByCode(reader.GetInt64OrDefault(13)),
Severity = GetSeverityByCode(reader.GetInt64OrDefault(14)),
Comment = reader.GetStringOrDefault(15),
Data = reader.GetStringOrDefault(16).FromWin1251ToUTF8(),
DataPresentation = reader.GetStringOrDefault(17),
Metadata = GetMetadataByCode(reader.GetInt64OrDefault(18))
});
}
catch (Exception ex)
{
RaiseOnError(new OnErrorEventArgs(ex, reader.GetRowAsString(), false));
_currentRow = null;
}
}
}
}
}
}
#endregion
if (_lastRowNumberFromBuffer >= _readBuffer.Count)
{
RaiseAfterReadFile(new AfterReadFileEventArgs(_logFilePath));
_currentRow = null;
return(false);
}
RaiseBeforeRead(new BeforeReadEventArgs(null, _eventCount));
_currentRow = _readBuffer
.Where(bufRow => bufRow.RowID > _lastRowId)
.First();
_lastRowNumberFromBuffer += 1;
_lastRowId = _currentRow.RowID;
RaiseAfterRead(new AfterReadEventArgs(_currentRow, _eventCount));
return(true);
}
catch (Exception ex)
{
RaiseOnError(new OnErrorEventArgs(ex, null, true));
_currentRow = null;
return(false);
}
}
public override bool Read()
{
try
{
if (_stream == null)
{
if (_logFilesWithData.Length <= _indexCurrentFile)
{
_currentRow = null;
return(false);
}
InitializeStream(_defaultBeginLineForLGF, _indexCurrentFile);
_currentFileEventNumber = 0;
}
_eventSource.Clear();
BeforeReadFileEventArgs beforeReadFileArgs = new BeforeReadFileEventArgs(CurrentFile);
if (_currentFileEventNumber == 0)
{
RaiseBeforeReadFile(beforeReadFileArgs);
}
if (beforeReadFileArgs.Cancel)
{
NextFile();
return(Read());
}
string sourceData;
bool newLine = true;
int countBracket = 0;
bool textBlockOpen = false;
while (true)
{
sourceData = _stream.ReadLine();
if (sourceData == null)
{
NextFile();
return(Read());
}
if (newLine)
{
_eventSource.Append(sourceData);
}
else
{
_eventSource.AppendLine();
_eventSource.Append(sourceData);
}
if (LogParserLGF.ItsEndOfEvent(sourceData, ref countBracket, ref textBlockOpen))
{
newLine = true;
_currentFileEventNumber += 1;
string prepearedSourceData = _eventSource.ToString();
RaiseBeforeRead(new BeforeReadEventArgs(prepearedSourceData, _currentFileEventNumber));
try
{
RowData eventData = LogParser.Parse(prepearedSourceData);
if (eventData.Period >= ReferencesReadDate)
{
ReadEventLogReferences();
eventData = LogParser.Parse(prepearedSourceData);
}
_currentRow = eventData;
}
catch (Exception ex)
{
RaiseOnError(new OnErrorEventArgs(ex, prepearedSourceData, false));
_currentRow = null;
}
RaiseAfterRead(new AfterReadEventArgs(_currentRow, _currentFileEventNumber));
return(true);
}
else
{
newLine = false;
}
}
}
catch (Exception ex)
{
RaiseOnError(new OnErrorEventArgs(ex, null, true));
_currentRow = null;
return(false);
}
}