private static LogHeader ReadLogHeader(Stream stream, string filePath)
{
// ReSharper disable once UseObjectOrCollectionInitializer
var header = new LogHeader();
header.LogFilePath = filePath;
// There are only 4 bytes for this in an aaLGX file.
var headerLength = stream.GetInt(8);
header.MsgCount = (ulong)stream.GetInt(12);
header.StartFileTime = stream.GetFileTime(16);
header.EndFileTime = stream.GetFileTime(24);
header.OffsetFirstRecord = stream.GetInt(32);
header.OffsetLastRecord = stream.GetInt(40);
header.ComputerName = GetComputerName(stream, headerLength);
return(header);
}
private static LogRecord ReadLogRecord(Stream stream, int offset, int previousOffset, LogHeader header)
{
LOG.DebugFormat("offset: {0}", offset);
// ReSharper disable once UseObjectOrCollectionInitializer
var record = new LogRecord();
record.RecordLength = stream.GetInt(offset + 4);
record.OffsetToPrevRecord = previousOffset;
record.OffsetToNextRecord = checked (offset + record.RecordLength);
stream.Seek(offset, SeekOrigin.Begin);
var bytes = new byte[record.RecordLength];
stream.Read(bytes, 0, record.RecordLength);
record.MessageNumber = bytes.GetULong(16);
record.SessionID = bytes.GetSessionID(24);// string.Format("{0}.{1}.{2}.{3}", bytes[27], bytes[26], bytes[25], bytes[24]);
record.ProcessID = (uint)bytes.GetInt(28);
record.ThreadID = (uint)bytes.GetInt(32);
record.EventFileTime = bytes.GetFileTime(36);
var position = 44;
int length;
record.LogFlag = bytes.GetString(position, out length);
position += length + 2;
record.Component = bytes.GetString(position, out length);
position += length + 2;
record.Message = bytes.GetString(position, out length);
position += length + 2;
record.ProcessName = bytes.GetString(position, out length);
return(record);
}
private static LogRecord ReadLogRecord(Stream stream, int offset, int previousOffset, LogHeader header)
{
LOG.DebugFormat("offset: {0}", offset);
// ReSharper disable once UseObjectOrCollectionInitializer
var record = new LogRecord();
record.RecordLength = stream.GetInt(offset + 4);
record.OffsetToPrevRecord = previousOffset;
record.OffsetToNextRecord = checked(offset + record.RecordLength);
stream.Seek(offset, SeekOrigin.Begin);
var bytes = new byte[record.RecordLength];
stream.Read(bytes, 0, record.RecordLength);
record.MessageNumber = bytes.GetULong(16);
record.SessionID = string.Format("{0}.{1}.{2}.{3}", bytes[27], bytes[26], bytes[25], bytes[24]);
record.ProcessID = (uint)bytes.GetInt(28);
record.ThreadID = (uint)bytes.GetInt(32);
record.EventFileTime = bytes.GetFileTime(36);
var position = 44;
int length;
record.LogFlag = bytes.GetString(position, out length);
position += length + 2;
record.Component = bytes.GetString(position, out length);
position += length + 2;
record.Message = bytes.GetString(position, out length);
position += length + 2;
record.ProcessName = bytes.GetString(position, out length);
return record;
}
/// <summary>
/// Read the log file header from the currently opened filestream
/// </summary>
/// <param name="logFileStream">Specific filestream to inspect and extract log header</param>
/// <returns>The log header for the file stream</returns>
public LogHeader ReadLogHeader(FileStream logFileStream)
{
log.DebugFormat("logFileStream length - ", logFileStream.Length);
int readResult;
LogHeader localHeader = new LogHeader();
int workingOffset = 0;
byte[] byteArray = new byte[1];
int fieldLength;
try
{
// Set our file pointer to the beginning
logFileStream.Seek((long)0, SeekOrigin.Begin);
//Recreate the Byte Array with the appropriate size
byteArray = new byte[12];
//Get first 12 byteArray into the byte array. The header length is in the last 4 byteArray
readResult = logFileStream.Read(byteArray, 0, 12);
// Get the last4 byteArray, starting at byte 8 to get the length of the header
int headerLength = BitConverter.ToInt32(byteArray, 8);
logFileStream.Seek((long)0, SeekOrigin.Begin);
// Redim the byte array to the size of the header
byteArray = new byte[checked(headerLength + 1)];
//Now read in the entire header, considering the header length from above
readResult = logFileStream.Read(byteArray, 0, headerLength);
// Start to pick out the values
// Start Message Number
localHeader.StartMsgNumber = byteArray.GetULong(20);
// Message Count
localHeader.MsgCount = (ulong)byteArray.GetInt(28);
// Start and End FileTime
localHeader.StartFileTime = byteArray.GetFileTime(32);
localHeader.EndFileTime = byteArray.GetFileTime(40);
// Offset for the first lastRecordRead
localHeader.OffsetFirstRecord = byteArray.GetInt(48);
// Offset for the last lastRecordRead
localHeader.OffsetLastRecord = byteArray.GetInt(52);
// Computer Name
workingOffset = 56;
localHeader.ComputerName = byteArray.GetString(56, out fieldLength);
// Session
workingOffset += fieldLength + 2;
localHeader.Session = byteArray.GetString(workingOffset, out fieldLength);
// Previous File Name
workingOffset += fieldLength + 2;
localHeader.PrevFileName = byteArray.GetString(workingOffset, out fieldLength);
//HostFQDN
localHeader.HostFQDN = Fqdn.GetFqdn();
localHeader.ReturnCode = new ReturnCodeStruct { Status = true, Message = "" };
}
catch (Exception ex)
{
this.ReturnCloseValue = this.CloseCurrentLogFile();
localHeader.ReturnCode = new ReturnCodeStruct { Status = false, Message = ex.Message };
log.Error(ex);
}
finally
{
// Set the log header to this locaheader we have calculated
this.CurrentLogHeader = localHeader;
}
return this.CurrentLogHeader;
}
private static LogHeader ReadLogHeader(Stream stream, string filePath)
{
// ReSharper disable once UseObjectOrCollectionInitializer
var header = new LogHeader();
header.LogFilePath = filePath;
// There are only 4 bytes for this in an aaLGX file.
var headerLength = stream.GetInt(8);
header.MsgCount = (ulong)stream.GetInt(12);
header.StartFileTime = stream.GetFileTime(16);
header.EndFileTime = stream.GetFileTime(24);
header.OffsetFirstRecord = stream.GetInt(32);
header.OffsetLastRecord = stream.GetInt(40);
header.ComputerName = GetComputerName(stream, headerLength);
return header;
}
public static string HeaderTSV()
{
return(LogHeader.Header('\t'));
}
public static string HeaderCSV()
{
return(LogHeader.Header(','));
}
public static string Header(char Delimiter = ',')
{
LogHeader lh = new LogHeader();
return(lh.localHeader(Delimiter));
}
public static string Header(char Delimiter = ',')
{
LogHeader lh = new LogHeader();
return lh.localHeader(Delimiter);
}
