public void OnFileChanged(TrackedFileEventArgs file)
{
if (CancellationToken.IsCancellationRequested)
{
return;
}
var filePath = file.Path;
ICancellableTask task = null;
// Check if we have an outstanding line count task. If we don't, kick one off
lock (OutstandingLineCounts)
{
if (!OutstandingLineCounts.ContainsKey(filePath))
{
// kick off and add line count task
task = CancellableTaskRunner.Run(async token =>
{
await CalculateLineCount(filePath, token);
}, onThreadPoolThread: true);
OutstandingLineCounts.Add(filePath, task);
}
}
task?.Task.ContinueWith(t =>
{
if (t.IsFaulted)
{
OnLineCountFailed?.Invoke(new LineCountFailedEventArgs(filePath, t.Exception));
}
});
}
private static void StateTracker_OnTrackedFileModified(TrackedFileEventArgs eventArgs)
{
Task.Run(() =>
{
Console.WriteLine($"Tracked file Modified: {eventArgs.Path} at {eventArgs.TimeStamp.TimeOfDay}");
});
}
protected void CheckForDeletedFiles(DirectoryScannedEventArgs eventArgs)
{
foreach (var missingFilePath in TrackedPaths.Keys.Except(eventArgs.FilePathModificationTimes.Keys).ToList())
{
var missingFileEventArgs = new TrackedFileEventArgs(missingFilePath);
TrackedPaths.Remove(missingFilePath);
OnTrackedFileMissing?.Invoke(missingFileEventArgs);
}
}
public void OnFileRemoved(TrackedFileEventArgs file)
{
var filePath = file.Path;
// Cancel an outstanding line count task for this file, if one exists
lock (OutstandingLineCounts)
{
if (OutstandingLineCounts.TryGetValue(filePath, out var task))
{
task.Cancel();
}
}
lock (PathLineCounts)
{
// NOTE: if the key doesn't exist, the method will return null,
// not throw an exception, per method documentation
PathLineCounts.Remove(filePath);
}
}
protected void CheckForNewOrModifiedFiles(DirectoryScannedEventArgs eventArgs)
{
foreach (var filePathModificationTime in eventArgs.FilePathModificationTimes)
{
var trackedFileEventArgs = new TrackedFileEventArgs(filePathModificationTime.Key);
if (TrackedPaths.TryGetValue(filePathModificationTime.Key, out var value))
{
if (value < filePathModificationTime.Value)
{
OnTrackedFileModified?.Invoke(trackedFileEventArgs);
}
TrackedPaths[filePathModificationTime.Key] = filePathModificationTime.Value;
}
else
{
TrackedPaths.Add(filePathModificationTime);
OnNewFileScanned?.Invoke(trackedFileEventArgs);
}
}
}
