protected override void Append(LoggingEvent loggingEvent)
{
CloseFile();
File = fileNamePattern.Replace("__filename__", ThreadContext.Properties["PropertyName"].ToString());
LockingModel.OpenFile(File, true, Encoding.UTF8);
LockingModel.AcquireLock();
OpenFile(File, true);
base.Append(loggingEvent);
DoAppend(loggingEvent);
}
/// <summary>
/// Sets and <i>opens</i> the file where the log output will go. The specified file must be writable.
/// </summary>
/// <param name="fileName">The path to the log file. Must be a fully qualified path.</param>
/// <param name="append">If true will append to fileName. Otherwise will truncate fileName</param>
/// <remarks>
/// <para>
/// If there was already an opened file, then the previous file
/// is closed first.
/// </para>
/// <para>
/// This method will ensure that the directory structure
/// for the <paramref name="fileName"/> specified exists.
/// </para>
/// </remarks>
protected virtual void OpenFile(string fileName, bool append)
{
if (LogLog.IsErrorEnabled)
{
// Internal check that the fileName passed in is a rooted path
var isPathRooted = false;
using (SecurityContext.Impersonate(this))
{
isPathRooted = Path.IsPathRooted(fileName);
}
if (!isPathRooted)
{
LogLog.Error("FileAppender: INTERNAL ERROR. OpenFile(" + fileName + "): File name is not fully qualified.");
}
}
lock (this)
{
Reset();
LogLog.Debug("FileAppender: Opening file for writing [" + fileName + "] append [" + append + "]");
// Save these for later, allowing retries if file open fails
m_fileName = fileName;
m_appendToFile = append;
LockingModel.CurrentAppender = this;
LockingModel.OpenFile(fileName, append, m_encoding);
m_stream = new LockingStream(LockingModel);
if (m_stream != null)
{
m_stream.AcquireLock();
try
{
SetQWForFiles(new StreamWriter(m_stream, m_encoding));
}
finally
{
m_stream.ReleaseLock();
}
}
WriteHeader();
}
}