private StreamWriter OpenFileForWriting(
string folderPath,
SizeLimitedLogFileDescription logFileDescription,
Encoding encoding)
{
EnsureDirectoryCreated(folderPath);
try
{
var fullPath = Path.Combine(folderPath, logFileDescription.FileName);
var stream = File.Open(fullPath, FileMode.Append, FileAccess.Write, FileShare.Read);
return(new StreamWriter(stream, encoding ?? Encoding.UTF8));
}
catch (IOException ex)
{
// Unfortuantely the exception doesn't have a code to check so need to check the message instead
if (!ex.Message.StartsWith("The process cannot access the file"))
{
throw;
}
}
catch (UnauthorizedAccessException)
{
if (exceptionAlreadyThrown)
{
throw;
}
exceptionAlreadyThrown = true;
}
return(OpenFileForWriting(folderPath, logFileDescription.Next(), encoding));
}
private SizeLimitedFileSink NextSizeLimitedFileSink()
{
SizeLimitedLogFileDescription next = this.currentSink.LogFileDescription.Next();
this.currentSink.Dispose();
return(new SizeLimitedFileSink(this.formatter, this.logDirectory, next, this.encoding));
}
internal SizeLimitedFileSink(
ITextFormatter formatter,
SizeLimitedLogFileDescription sizeLimitedLogFileDescription,
StreamWriter writer)
{
this.formatter = formatter;
this.sizeLimitedLogFileDescription = sizeLimitedLogFileDescription;
this.output = writer;
}
public SizeLimitedFileSink(
ITextFormatter formatter,
string logDirectory,
SizeLimitedLogFileDescription sizeLimitedLogFileDescription,
Encoding encoding = null)
{
this.formatter = formatter;
this.sizeLimitedLogFileDescription = sizeLimitedLogFileDescription;
this.output = OpenFileForWriting(logDirectory, sizeLimitedLogFileDescription, encoding ?? Encoding.UTF8);
}
