public override void LineIsProcessed(Guid resultId)
{
Log.Trace(string.Format("{0}: ({1}) is processed.", LogContext.LogType, resultId));
if (_lineInProcess.ResultId != resultId)
{
throw new InvalidOperationException("Result ids does not match.");
}
string filePath;
_changedFiles.TryPeek(out filePath);
if (_lineInProcess.FilePath != filePath)
{
throw new InvalidOperationException("File paths does not match.");
}
var positionKey = GetPositionKey(filePath);
using (var fs = new TextFileLineReader(filePath, _encoding))
{
fs.Position = LogContext.Storage.Get <long>(positionKey);
if (_lineInProcess.Position >= fs.Length)
{
_changedFiles.TryDequeue(out filePath);
}
}
LogContext.Storage.Insert(positionKey, _lineInProcess.Position);
_lineInProcess = null;
}
private void ReadLinesFromFile(string filePath, int limit)
{
try
{
using (var fs = new TextFileLineReader(filePath, _encoding))
{
var originalPosition = GetPosition(filePath);
fs.Position = originalPosition;
while (fs.Position < fs.Length)
{
var lineResult = fs.ReadLine();
if (string.IsNullOrWhiteSpace(lineResult))
{
continue;
}
var result = new Result(LogContext)
{
Line = lineResult
};
result.MetaData[MetaDataKeys.FilePath] = filePath;
result.Position = fs.Position;
Log.Trace(string.Format("{0}: ({1}) from '{2}' at byte position {3}.", LogContext.LogType, result.Id, filePath, originalPosition));
Log.Trace(string.Format("{0}: ({1}) line '{2}' read.", LogContext.LogType, result.Id, lineResult));
_unprocessed.Enqueue(result);
if (_unprocessed.Count >= limit)
{
break;
}
}
}
}
catch (FileNotFoundException)
{
bool tmp;
_files.TryRemove(filePath, out tmp);
}
}
public override Result GetLine()
{
while (true)
{
string filePath;
while (!_changedFiles.TryPeek(out filePath))
{
Thread.Sleep(TimeSpan.FromSeconds(1));
}
using (var fs = new TextFileLineReader(filePath, _encoding))
{
var originalPosition = LogContext.Storage.Get <long>(GetPositionKey(filePath));
fs.Position = originalPosition;
while (fs.Position < fs.Length)
{
var lineResult = fs.ReadLine();
if (string.IsNullOrWhiteSpace(lineResult))
{
continue;
}
var result = new Result {
Line = lineResult
};
result.MetaData[MetaDataKeys.FilePath] = filePath;
Log.Trace(string.Format("{0}: ({1}) from '{2}' at byte position {3}.", LogContext.LogType, result.Id, filePath, originalPosition));
Log.Trace(string.Format("{0}: ({1}) line '{2}' read.", LogContext.LogType, result.Id, lineResult));
SetLineInProcess(result.Id, filePath, fs.Position);
return(result);
}
_changedFiles.TryDequeue(out filePath);
}
}
}
private void ReadLinesFromFile(string filePath, int limit)
{
try
{
using (var fs = new TextFileLineReader(filePath, _encoding))
{
var originalPosition = GetPosition(filePath);
fs.Position = originalPosition;
while (fs.Position < fs.Length)
{
var lineResult = fs.ReadLine();
if (string.IsNullOrWhiteSpace(lineResult))
continue;
var result = new Result(LogContext) {Line = lineResult};
result.MetaData[MetaDataKeys.FilePath] = filePath;
result.Position = fs.Position;
Log.Trace(string.Format("{0}: ({1}) from '{2}' at byte position {3}.", LogContext.LogType, result.Id, filePath, originalPosition));
Log.Trace(string.Format("{0}: ({1}) line '{2}' read.", LogContext.LogType, result.Id, lineResult));
_unprocessed.Enqueue(result);
if (_unprocessed.Count >= limit)
{
break;
}
}
}
}
catch (FileNotFoundException)
{
bool tmp;
_files.TryRemove(filePath, out tmp);
}
}