public static LogFileProvider Open(string filePath, BackgroundWorker worker, DoWorkEventArgs e)
{
try
{
logger.DebugFormat("Parsing log events from file {0}", filePath);
LogFileProvider logs = new LogFileProvider();
logs.location = filePath;
LogFileProvider.read(logs, worker, e);
return(logs);
}
catch (Exception ex)
{
throw new OpenLogFileException(filePath, ex);
}
}
private static bool read(LogFileProvider logs, BackgroundWorker worker, DoWorkEventArgs e)
{
DataTable t = logs.dataSet.Tables["LogData"];
using (StreamReader rd = new StreamReader(new FileStream(logs.Location, FileMode.Open, FileAccess.Read, FileShare.Delete)))
{
long fileSize = rd.BaseStream.Length;
using (new Tools.PerfMonitor(string.Format("Time taken to load {0} ({1} kb)", logs.Location, fileSize / 1024)))
{
if (logs.lastPosition > fileSize)
{
return(false);
}
rd.BaseStream.Position = logs.lastPosition;
int i = logs.LastLine;
double charRead = 0;
logEvent l = new logEvent();
while (!rd.EndOfStream)
{
string lStr = rd.ReadLine();
logEvent nl = parsingRules.ParseLine(lStr, i++);
if (nl.IsValid)
{
addRow(t, l);
l = nl;
}
else
{
l.Message += ("\r\n" + lStr);
}
charRead += lStr.Length;
int progress = (int)Math.Truncate((charRead / fileSize) * 100);
if (worker != null)
{
worker.ReportProgress(progress);
if (worker.CancellationPending)
{
t.RejectChanges();
e.Cancel = true;
return(false);
}
}
}
addRow(t, l);
t.AcceptChanges();
if (e != null)
{
e.Result = logs;
}
logs.lastPosition = rd.BaseStream.Position;
logs.lastLine = i;
}
logs.isValid = true;
logs.status = LogProviderStatus.Online;
}
return(true);
}
public static LogFileProvider Open(string filePath)
{
return(LogFileProvider.Open(filePath, null, null));
}
public void Watch(BackgroundWorker worker, DoWorkEventArgs e)
{
logger.DebugFormat("Tailing file {0}", this.Location);
LogFileProvider.read(this, worker, e);
}
