private void DirectoryChangeWatcherOnError(Exception exception)
{
_taskExecutor.ExecuteAsync(token => {
Logger.LogInfo("FileSystemSnapshotManager: Directory watcher error received, entering pause mode");
// Note: No need to stop the directory watcher, it paused itself
_isPaused = true;
// Ingore all changes
_pathsChangedQueue.DequeueAll();
_longRunningFileSystemTaskQueue.CancelAll();
OnFileSystemWatchPaused(new FileSystemWatchPausedEventArgs {
IsError = true
});
});
}
private void PollingThreadOnPolling(object sender, EventArgs eventArgs)
{
lock (_stateLock) {
_state = _state.OnPolling();
_state.OnStateActive();
}
var actions = _watcherEventQueue.DequeueAll();
if (actions.Count > 0)
{
Logger.LogDebug("DirectectoryChangeWatcher: Processing {0} file change event(s)", actions.Count);
foreach (var action in actions)
{
Logger.WrapActionInvocation(() => {
action();
});
}
}
}
public IList <FileRegistrationEntry> DequeueAll()
{
var allEntries = _queue.DequeueAll();
if (allEntries.Count == 0)
{
return(allEntries);
}
// Merge entries into a shorter list
var singleEntries = new Dictionary <FullPath, FileRegistrationKind>();
foreach (var entry in allEntries)
{
FileRegistrationKind previousKind;
if (singleEntries.TryGetValue(entry.Path, out previousKind))
{
// Path has been (un)registered, merge both kinds together
switch (previousKind)
{
case FileRegistrationKind.Register:
switch (entry.Kind)
{
case FileRegistrationKind.Register:
// Register + Register = leave as is
break;
case FileRegistrationKind.Unregister:
// Register + Unregister = remove entry
singleEntries.Remove(entry.Path);
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
case FileRegistrationKind.Unregister:
switch (entry.Kind)
{
case FileRegistrationKind.Register:
// Unregister + Register = remove entry
singleEntries.Remove(entry.Path);
break;
case FileRegistrationKind.Unregister:
// Unregister + Unregister = leave as is
break;
default:
throw new ArgumentOutOfRangeException();
}
break;
default:
throw new ArgumentOutOfRangeException();
}
}
else
{
// Path is not registered, simply add the entry.
singleEntries.Add(entry.Path, entry.Kind);
}
}
return(singleEntries.Select(x => new FileRegistrationEntry(x.Key, x.Value)).ToList());
}
