/// <summary>
/// Sets the new config safely, waiting until syncs have completed.
/// </summary>
private void SetNewConfig(Config newConfig)
{
_logger.LogDebug(
"new config received");
if (_syncing)
{
//Wait until sync completes before setting new Config
lock (_configChangedLock)
{
Monitor.Wait(_configChangedLock);
}
}
//Migrate in memory sync times to the new config so we don't lose them
foreach (var path in newConfig.Paths)
{
var match = _config.Paths.Find(f => f.Path == path.Path);
if (match is not null)
{
path.LastSynced = match.LastSynced;
}
}
//Swap and save new config
_config = newConfig;
FileSyncUtility.SaveConfig(_config, _confLocation);
//Begin a new sync regardless of wait time
lock (_waitIntervalLock)
{
Monitor.Pulse(_waitIntervalLock);
}
}
public MainWindow()
{
InitializeComponent();
_client = new PipeClient("syncsharp");
Closed += (sender, args) => Disconnect(sender, null);
_vm = new SyncViewModel();
//Load conf from correct directory
#if DEBUG
_vm.Config = FileSyncUtility.LoadConfig(@"..\..\..\..\SyncSharpWorker\bin\Debug\net5.0\conf.bin");
#else
_vm.Config = FileSyncUtility.LoadConfig(@$ "..{Path.DirectorySeparatorChar}SyncSharpWorker\conf.bin");
#endif
PathListView.ItemsSource = _vm.Config.Paths;
BackupIntervalInput.Text = _vm.Config.CheckInterval.ToString();
}
protected override async Task ExecuteAsync(CancellationToken stoppingToken)
{
//Wake main thread if cancelled
stoppingToken.Register(() =>
{
lock (_waitIntervalLock)
{
Monitor.Pulse(_waitIntervalLock);
}
});
//Start server thread
_ = Task.Run((async() =>
{
//Continuously listen for new configs from the GUI
outer: while (!stoppingToken.IsCancellationRequested)
{
_logger.LogDebug("Waiting on connection...");
await _pipeServer.WaitForConnectionAsync(stoppingToken);
const int bufferSize = 4000;
Memory <byte> buffer = new byte[bufferSize];
//Use list as a dynamic 'buffer'
var accList = new List <byte>();
_logger.LogDebug("Pipe Connected");
while (!stoppingToken.IsCancellationRequested)
{
//Reset Transfer size
var lastByteTransferSize = 0;
//Keep reading from stream until empty
do
{
var task = _pipeServer.ReadAsync(buffer, stoppingToken);
await task;
_logger.LogDebug($"Finished reading {task.Result} bytes from pipe");
lastByteTransferSize = task.Result;
//Move buffer to list and clear buffer
accList.AddRange(buffer.ToArray());
buffer.Span.Clear();
} while (lastByteTransferSize == bufferSize);
var bytesRead = accList.ToArray().AsSpan().TrimEnd((byte)0).Length;
_logger.LogDebug($"finished reading a total of {bytesRead} bytes from pipe.");
//A one byte message means we should disconnect
if (bytesRead == 1)
{
_logger.LogDebug("Disconnect bit received, disconnecting");
_pipeServer.Disconnect();
goto outer;
}
//Trim excess 0s from the end of buffer> WILL NOT serialize without this
var newConfig = Serializer.Deserialize <Config>(accList.ToArray().AsSpan().TrimEnd((byte)0));
//Safely apply the new config
SetNewConfig(newConfig);
//Reset buffers
buffer.Span.Clear();
accList.Clear();
}
}
}), stoppingToken);
while (!stoppingToken.IsCancellationRequested)
{
//Wait time between syncs
lock (_waitIntervalLock)
{
_logger.LogDebug($"entering sleep for {_config.CheckInterval}");
Monitor.Wait(_waitIntervalLock, _config.CheckInterval);
}
_syncing = true;
_logger.LogDebug($"woke, starting sync");
await FileSyncUtility.Sync(_config, stoppingToken, _logger);
_syncing = false;
//Signal that syncs are done
lock (_configChangedLock)
{
Monitor.Pulse(_configChangedLock);
}
}
}
private Config GetConfig()
{
return(FileSyncUtility.LoadConfig(_confLocation));
}
