static public void CleanupOldLogFiles(string logBaseFilename, int maxAgeOfLogsInDays)
{
// Launch a worker thread that will delete old log files in the background
LogCleanupParams logCleanupParams = new LogCleanupParams(logBaseFilename, maxAgeOfLogsInDays);
BackgroundWorker backgroundWorker = new BackgroundWorker();
backgroundWorker.DoWork += new DoWorkEventHandler(CleanupOldLogFiles_DoWork);
backgroundWorker.RunWorkerAsync(logCleanupParams);
}
static private void CleanupOldLogFiles_DoWork(object sender, DoWorkEventArgs e)
{
try
{
// Get the background worker that called this event.
BackgroundWorker backgroundWorker = (sender as BackgroundWorker);
// Get the parameters object from the argument
LogCleanupParams logCleanupParams = (e.Argument as LogCleanupParams);
// Extract folder and filename from the complete file path
string logFileFolder = Path.GetDirectoryName(logCleanupParams.LogFilename);
string justLogFilename = Path.GetFileName(logCleanupParams.LogFilename);
// Create folder if it doesn't exist already
try
{
if (!Directory.Exists(logFileFolder))
{
Directory.CreateDirectory(logFileFolder);
}
}
catch { }
// We expect the log files to start with the naming convention of "yyyyMMdd_THHmmssZ"
// If we are able to decode this prefix to a valid date, then delete the log file if
// the date signifies that it is older than "maxAgeOfLogsInDays" days
try
{
string[] logFiles = Directory.GetFiles(logFileFolder, "*" + justLogFilename, SearchOption.TopDirectoryOnly);
foreach (string nextLogFile in logFiles)
{
try
{
string justFilename = Path.GetFileName(nextLogFile);
DateTime logFileTimeStamp = DateTime.SpecifyKind(System.Xml.XmlConvert.ToDateTime(justFilename.Substring(0, 17), "yyyyMMdd_THHmmssZ"), DateTimeKind.Utc);
if (logFileTimeStamp < DateTime.Today.AddDays(logCleanupParams.MaxAgeOfLogsInDays * (-1)))
{
File.Delete(nextLogFile);
}
}
catch
{
}
}
}
catch
{
}
}
catch { }
}