server/AyaNova/generator/CoreJobPMGenerate.cs

@@ -0,0 +1,80 @@
+using System;
+using System.Linq;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using AyaNova.Models;
+using AyaNova.Util;
+
+namespace AyaNova.Biz
+{
+
+    /// <summary>
+    /// Preventive maintenance generator
+    /// turn PMs into Work orders
+    /// 
+    /// </summary>
+    internal static class CoreJobPMGenerate
+    {
+        private static bool IsRunning = false;
+        private static ILogger log = AyaNova.Util.ApplicationLogging.CreateLogger("CoreJobPMGenerate");
+        private static DateTime lastRun = DateTime.MinValue;
+
+
+#if (DEBUG)
+        private static TimeSpan RUN_EVERY_INTERVAL = new TimeSpan(0, 0, 20);//no more frequently than once every 20 seconds
+#else
+        private static TimeSpan RUN_EVERY_INTERVAL = new TimeSpan(0, 5, 0);//no more frequently than once every 5 minutes
+#endif
+
+
+        public static async Task DoWorkAsync()
+        {
+            log.LogTrace("Checking if PMGenerate should run");
+            if (IsRunning)
+            {
+                log.LogTrace("PMGenerate is running already exiting this cycle");
+                return;
+            }
+            //This will get triggered roughly every minute, but we don't want to deliver that frequently
+            if (DateTime.UtcNow - lastRun < RUN_EVERY_INTERVAL)
+            {
+                log.LogTrace($"PMGenerate ran less than {RUN_EVERY_INTERVAL} ago, exiting this cycle");
+                return;
+            }
+            try
+            {
+                IsRunning = true;
+                log.LogTrace("PMGenerate set to RUNNING state and starting now");
+
+                using (AyContext ct = AyaNova.Util.ServiceProviderProvider.DBContext)
+                {
+                    await PMBiz.Generate(ct, log);
+                }
+            }
+            catch (Exception ex)
+            {
+                log.LogError(ex, $"Error processing PMGenerate ");
+            }
+            finally
+            {
+                log.LogTrace("PMGenerate has completed; setting to not running state and tagging lastRun timestamp");
+                lastRun = DateTime.UtcNow;
+                IsRunning = false;
+
+            }
+
+        }
+
+
+
+
+
+        /////////////////////////////////////////////////////////////////////
+
+    }//eoc
+
+
+}//eons
+