/// <summary>
/// Removes the handlers and stops the engine
/// </summary>
/// <returns>Returns task to wait for until shutdown has completed</returns>
public static async Task ShutdownAsync()
{
await lockShutdown.WaitAsync();
logger.Info("Shutdown...");
if (!IsRunning())
{
lockShutdown.Release();
return;
}
var db = Pool.Database.Get();
await db.ControllerLog(Id, "Shutdown Initiated", CancellationToken);
State = EngineState.Stopping;
// Stop jobs
AutomaticJobsManager.Stop();
// Disconnect connections
connectionManagmentTimer.Stop();
var connectionsToStop = new List <Task>();
var registeredConnections = nodeConnections.Select(nc => nc.Value).ToList();
foreach (var node in registeredConnections)
{
if (node.IsConnected)
{
connectionsToStop.Add(_Disconnect(node.Id));
}
}
await Task.WhenAll(connectionsToStop);
connectionsToStop = null;
// Signal completition of message processing and wait for buffer to complete, max. 5 seconds
messageBuffer.Complete();
int timeout = 0;
while (messageBuffer.InputCount > 0 && timeout < 20)
{
await Task.Delay(250);
timeout++;
}
// Cancel parallel operations in Main
logger.Debug("Cancelling processes, may take up to two minutes.");
cancellationToken.Cancel();
/// Wait 10 seconds
await Task.Delay(10000);
var databaseCancellationTokenSource = new CancellationTokenSource();
databaseCancellationTokenSource.CancelAfter(30000);
await db.ControllerLog(Id, "Remaining Connections terminated", databaseCancellationTokenSource.Token);
await db.ControllerLog(Id, "Shutdown Completed", databaseCancellationTokenSource.Token);
await db.ControllerShutdown(Id, databaseCancellationTokenSource.Token);
Pool.Database.Put(db);
databaseCancellationTokenSource.Dispose();
databaseCancellationTokenSource = null;
// Shutdown the Cache
Cache.Shutdown();
State = EngineState.Stopped;
logger.Info("Shutdown completed");
messageBuffer = null;
cancellationToken.Dispose();
cancellationToken = null;
connectionManagmentTimer.Dispose();
connectionManagmentTimer = null;
lockShutdown.Release();
lockShutdown.Dispose();
lockShutdown = null;
logger = null;
}
