private void CleanupFileSystemWatcher()
{
if (_fileSystemWatcher is null)
{
return;
}
UnsubscribeFromEvents();
_fileSystemWatcher.Dispose();
_fileSystemWatcher = null;
}
public override void OnDelete(object sender, FileSystemEventArgs e)
{
base.OnDelete(sender, e);
lock (lk)
{
IFileSystemWatcherWrapper childWatch;
if (!watches.TryGetValue(e.FullPath, out childWatch))
{
return;
}
watches.Remove(e.FullPath);
watch.RemoveListener(this);
watch.Dispose();
}
Logger.Debug("Child Directory Deleted: {0}", e.FullPath);
}
/// <summary>
/// @see: https://www.codeguru.com/dotnet/filesystemwatcher%EF%BF%BDwhy-does-it-stop-working/
/// </summary>
internal bool Retry(IFileSystemWatcherWrapper fileSystemWatcherWrapper, int numberOfTries = 20, int milliSecondsTimeout = 5000)
{
_webLogger.LogInformation("[DiskWatcher] next retry " +
$"{DateTimeDebug()}");
var path = _fileSystemWatcherWrapper.Path;
_fileSystemWatcherWrapper.Dispose();
_fileSystemWatcherWrapper = fileSystemWatcherWrapper;
var i = 0;
while (!_fileSystemWatcherWrapper.EnableRaisingEvents && i < numberOfTries)
{
try
{
// This will throw an error at the
// watcher.NotifyFilter line if it can't get the path.
Watcher(path);
if (_fileSystemWatcherWrapper.EnableRaisingEvents)
{
_webLogger.LogInformation("[DiskWatcher] I'm Back!");
}
return(true);
}
catch
{
_webLogger.LogInformation($"[DiskWatcher] next retry {i} - wait for {milliSecondsTimeout}ms");
// Sleep for a bit; otherwise, it takes a bit of
// processor time
System.Threading.Thread.Sleep(milliSecondsTimeout);
i++;
}
}
_webLogger.LogError($"[DiskWatcher] Failed after {i} times - so stop trying");
return(false);
}
public override void Dispose()
{
base.Dispose();
watch?.Dispose();
watch = null;
}
