Update: User Cache Prune Seperation

Avoids other assemblies from requiring Quartz just to get CurrentUser

Disco.BI/BI/UserBI/UserCachePruneTask.cs

@@ -0,0 +1,42 @@
+using Disco.Data.Repository;
+using Disco.Services.Tasks;
+using Quartz;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Disco.BI.UserBI
+{
+    public class UserCachePruneTask : ScheduledTask
+    {
+        public override string TaskName { get { return "User Cache - Clean Stale Cache"; } }
+
+        public override bool SingleInstanceTask { get { return true; } }
+        public override bool CancelInitiallySupported { get { return false; } }
+        public override bool LogExceptionsOnly { get { return true; } }
+
+        public override void InitalizeScheduledTask(DiscoDataContext dbContext)
+        {
+            // Run @ every 15mins
+
+            // Next 15min interval
+            DateTime now = DateTime.Now;
+            int mins = (15 - (now.Minute % 15));
+            if (mins < 10)
+                mins += 15;
+            DateTimeOffset startAt = new DateTimeOffset(now).AddMinutes(mins).AddSeconds(now.Second * -1).AddMilliseconds(now.Millisecond * -1);
+
+            TriggerBuilder triggerBuilder = TriggerBuilder.Create().StartAt(startAt).
+                WithSchedule(SimpleScheduleBuilder.RepeatMinutelyForever(15));
+
+            this.ScheduleTask(triggerBuilder);
+        }
+
+        protected override void ExecuteTask()
+        {
+            UserCache.CleanStaleCache();
+        }
+    }
+}