Code rearrange for services and charting

2016-04-27 09:52:41 -04:00
parent 8c218cda48
commit 9730600164
11 changed files with 20 additions and 19 deletions
@@ -0,0 +1,136 @@
+using System;
+using System.Linq;
+using System.Threading;
+using LeafWeb.Core.Entities;
+using LeafWeb.Core.Remote;
+
+namespace LeafWeb.Web.Services.PiscalQueue
+{
+	public class PiscalQueueManager : PiscalQueueBase
+	{
+		private static readonly object ProcessQueueLock = new object();
+
+		public void ProcessQueue()
+		{
+			// prevent multiple entry into processing the queue
+			if (Monitor.TryEnter(ProcessQueueLock))
+			{
+				Logger.Trace("ProcessQueue entered");
+
+				try
+				{
+					UpdateRunning();
+
+					StartNextPending();
+
+					// TODO: handle starting and finishing
+				}
+				finally
+				{
+					Logger.Trace("ProcessQueue exit");
+
+					Monitor.Exit(ProcessQueueLock);
+				}
+			}
+			else
+			{
+				Logger.Trace("ProcessQueue locked, queue already processing");
+			}
+		}
+
+		private void ClearStalled()
+		{
+			var leafInputs = 
+				DataService.GetLeafInputs(
+					LeafInputStatusType.Starting, 
+					LeafInputStatusType.Finishing
+					)
+					.Where(li => 
+						li.StatusHistory.OrderBy(sh => sh.DateTime).First().DateTime
+							> DateTime.Now.Subtract(TimeSpan.FromHours(1)))
+					.ToList();
+		}
+
+		private void StartNextPending()
+		{
+			var runningLeafInputs = 
+				DataService.GetLeafInputs(
+					LeafInputStatusType.Starting,
+					LeafInputStatusType.Running,
+					LeafInputStatusType.Finishing 
+					).ToList();
+
+			if (runningLeafInputs.Any())
+			{
+				Logger.Trace("Leaf input(s) currently running");
+				return;
+			}
+
+			var pendingInput = 
+				DataService
+					.GetLeafInputs(LeafInputStatusType.Pending)
+					.OrderBy(l => l.StatusHistory.Min(sh => sh.DateTime))
+					.FirstOrDefault();
+
+			if (pendingInput == null)
+			{
+				Logger.Trace("No pending leaf input");
+				return;
+			}
+
+			var pendingInputId = pendingInput.Id;
+			Logger.Info("LeafInput: {0}, Starting", pendingInputId);
+			try
+			{
+				DataService.SetLeafInputStatus(pendingInput, LeafInputStatusType.Starting);
+				BackgroundJobEnqueueRetry<StartPending>(c => c.DoWork(pendingInputId));
+			}
+			catch (Exception ex)
+			{
+				var errorMessage = FormatException(ex, pendingInputId);
+				Logger.Error(errorMessage);
+				DataService.SetLeafInputStatus(pendingInput, LeafInputStatusType.Exception, ex.Message, errorMessage);
+			}
+		}
+
+		private void UpdateRunning()
+		{
+			var running = DataService.GetLeafInputs(LeafInputStatusType.Running).ToList();
+			foreach (var leafInput in running)
+			{
+				try
+				{
+					var status = PiscalService.GetStatus(leafInput);
+					var leafInputId = leafInput.Id;
+					switch (status)
+					{
+						case PiscalStatus.NotStarted:
+							// if it's not started - this is unusual state
+							Logger.Warn("LeafInput: {0}, Piscal Not Started", leafInput.Id);
+							break;
+
+						case PiscalStatus.Running:
+							Logger.Trace("LeafInput: {0}, Piscal Running", leafInput.Id);
+							// continue running
+							break;
+
+						case PiscalStatus.Complete:
+							DataService.SetLeafInputStatus(leafInput, LeafInputStatusType.Finishing);
+							BackgroundJobEnqueueRetry<FinishComplete>(s => s.DoWork(leafInputId));
+							
+							break;
+					}
+				}
+				catch (PiscalClientException ex)
+				{
+					PiscalExceptionHandle(ex, leafInput);
+				}
+				catch (Exception ex)
+				{
+					var errorMessage = FormatException(ex, leafInput.Id);
+					Logger.Error(errorMessage);
+				}
+			}
+		}
+	}
+}