private void OnChanged(string pathname)
{
// File
string folderName = null;
if (File.Exists(pathname))
{
// Get the file details
FileInfo fileInfo = new(pathname);
// Ignore our own sidecar and *.tmp files being created
if (!fileInfo.Extension.Equals(".tmp", StringComparison.OrdinalIgnoreCase) &&
!SidecarFile.IsSidecarFile(fileInfo))
{
folderName = fileInfo.DirectoryName;
}
}
// Or directory
else if (Directory.Exists(pathname))
{
folderName = pathname;
}
// Did we get a folder
if (string.IsNullOrEmpty(folderName))
{
return;
}
// Lock
lock (WatchLock)
{
// Add new folder or update existing timestamp
if (WatchFolders.ContainsKey(folderName))
{
// Update the modified time
Log.Logger.Information("Updating folder for processing by {MonitorWaitTime} : {Folder}", DateTime.Now.AddSeconds(Program.Config.MonitorOptions.MonitorWaitTime), folderName);
WatchFolders[folderName] = DateTime.UtcNow;
}
else
{
// Add the folder
Log.Logger.Information("Adding folder for processing by {MonitorWaitTime} : {Folder}", DateTime.Now.AddSeconds(Program.Config.MonitorOptions.MonitorWaitTime), folderName);
WatchFolders.Add(folderName, DateTime.UtcNow);
}
}
}
public bool MonitorFolders(List <string> folders)
{
Log.Logger.Information("Monitoring folders ...");
void ChangeHandler(object s, FileSystemEventArgs e)
{
OnChanged(e, this);
}
void RenameHandler(object s, RenamedEventArgs e)
{
OnRenamed(e, this);
}
void ErrorHandler(object s, ErrorEventArgs e)
{
OnError(e);
}
// Create file system watcher for each folder
foreach (string folder in folders)
{
// Create a file system watcher for the folder
Log.Logger.Information("Monitoring : {Folder}", folder);
FileSystemWatcher watch = new();
Watcher.Add(watch);
watch.Path = folder;
watch.NotifyFilter = NotifyFilters.Size | NotifyFilters.CreationTime | NotifyFilters.LastWrite | NotifyFilters.FileName | NotifyFilters.DirectoryName;
watch.Filter = "*.*";
watch.IncludeSubdirectories = true;
watch.Changed += ChangeHandler;
watch.Created += ChangeHandler;
watch.Deleted += ChangeHandler;
watch.Renamed += RenameHandler;
watch.Error += ErrorHandler;
}
// Enable event watching
Watcher.ForEach(item => item.EnableRaisingEvents = true);
// Wait for exit to be signalled
while (!Program.IsCancelled(1000))
{
// Lock and process the list of folders
List <string> watchlist = new();
lock (WatchLock)
{
if (WatchFolders.Any())
{
// Remove root folders from the watchlist
//TODO : Maybe we need a way to not process sub-directories?
//foreach (string folder in folders)
// WatchFolders.Remove(folder);
// Find folders that have settled down, i.e. not modified in last wait time
DateTime settleTime = DateTime.UtcNow.AddSeconds(-Program.Config.MonitorOptions.MonitorWaitTime);
foreach ((string key, DateTime value) in WatchFolders)
{
// If not recently modified and all files in the folder are readable
if (value < settleTime)
{
if (!FileEx.AreFilesInDirectoryReadable(key))
{
Log.Logger.Information("Folder not readable : {Folder}", key);
}
else
{
watchlist.Add(key);
}
}
}
// Remove watched folders from the watchlist
watchlist.ForEach(item => WatchFolders.Remove(item));
}
}
// Any work to do
if (!watchlist.Any())
{
continue;
}
// Process changes in the watched folders
foreach (string folder in watchlist)
{
Log.Logger.Information("Monitored changes in : {Folder}", folder);
}
Process process = new();
process.ProcessFolders(watchlist);
Process.DeleteEmptyFolders(watchlist);
}
// Disable event watching
Watcher.ForEach(item => item.EnableRaisingEvents = false);
Watcher.Clear();
return(true);
}