Add run time to queue

WebCms/Services/PiscalQueue/PiscalQueueManager.cs

@@ -3,17 +3,18 @@ using System.Linq;
 using System.Threading;
 using LeafWeb.Core.Entities;
 using LeafWeb.Core.Remote;
+using LeafWeb.WebCms.App_Start;
 
 namespace LeafWeb.WebCms.Services.PiscalQueue
 {
 	public class PiscalQueueManager : PiscalQueueBase
 	{
-		private static readonly object ProcessQueueLock = new object();
+		private static readonly object Lock = new object();
 
 		public void ProcessQueue()
 		{
 			// prevent multiple entry into processing the queue
-			if (Monitor.TryEnter(ProcessQueueLock))
+			if (Monitor.TryEnter(Lock))
 			{
 				Logger.DebugFormat("ProcessQueue entered");
 
@@ -31,7 +32,7 @@ namespace LeafWeb.WebCms.Services.PiscalQueue
 				{
 					Logger.DebugFormat("ProcessQueue exit");
 
-					Monitor.Exit(ProcessQueueLock);
+					Monitor.Exit(Lock);
 				}
 			}
 			else
@@ -40,6 +41,46 @@ namespace LeafWeb.WebCms.Services.PiscalQueue
 			}
 		}
 
+		public bool CancelPending(int leafInputId)
+		{
+			if (Monitor.TryEnter(Lock, TimeSpan.FromSeconds(1)))
+			{
+				Logger.DebugFormat("CancelLeafInput entered");
+
+				try
+				{
+					var leafInput = DataService.GetLeafInput(leafInputId);
+					if (!leafInput.IsCancellable)
+						return false;
+					if (leafInput.IsPending)
+					{
+						Logger.DebugFormat("LeafInput: {0}, Set Cancelled from Pending", leafInput.Id);
+						DataService.SetLeafInputStatus(leafInput, LeafInputStatusType.Cancelled,
+							"Emailing cancellation notification to user",
+							$"Email: \'{leafInput.Email}\'");
+
+						// send notification immediately
+						BackgroundJobEnqueueRetry<EmailNotificationService>(email => email.SendLeafWebCancelled(leafInput.Id));
+					}
+					else if (leafInput.IsRunning)
+					{
+						DataService.SetLeafInputStatus(leafInput, LeafInputStatusType.CancelPending);
+						HangfireStartup.TriggerPiscalProcessQueue();
+					}
+					return true;
+				}
+				finally
+				{
+					Logger.DebugFormat("CancelLeafInput exit");
+
+					Monitor.Exit(Lock);
+				}
+			}
+
+			Logger.DebugFormat("CancelLeafInput locked");
+			return false;
+		}
+
 		private void StartCancelPending()
 		{
 			var cancelPendingLeafInputs =